GitHub/LineageOS/android_kernel_motorola_exynos9610.git
5 years agoperf test 6: Fix missing kvm module load for s390
Thomas Richter [Tue, 4 Jun 2019 05:35:04 +0000 (07:35 +0200)]
perf test 6: Fix missing kvm module load for s390

[ Upstream commit 53fe307dfd309e425b171f6272d64296a54f4dff ]

Command

   # perf test -Fv 6

fails with error

   running test 100 'kvm-s390:kvm_s390_create_vm' failed to parse
    event 'kvm-s390:kvm_s390_create_vm', err -1, str 'unknown tracepoint'
    event syntax error: 'kvm-s390:kvm_s390_create_vm'
                         \___ unknown tracepoint

when the kvm module is not loaded or not built in.

Fix this by adding a valid function which tests if the module
is loaded. Loaded modules (or builtin KVM support) have a
directory named
  /sys/kernel/debug/tracing/events/kvm-s390
for this tracepoint.

Check for existence of this directory.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20190604053504.43073-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoperf cs-etm: Properly set the value of 'old' and 'head' in snapshot mode
Mathieu Poirier [Wed, 5 Jun 2019 16:16:33 +0000 (10:16 -0600)]
perf cs-etm: Properly set the value of 'old' and 'head' in snapshot mode

[ Upstream commit e45c48a9a4d20ebc7b639a62c3ef8f4b08007027 ]

This patch adds the necessary intelligence to properly compute the value
of 'old' and 'head' when operating in snapshot mode.  That way we can
get the latest information in the AUX buffer and be compatible with the
generic AUX ring buffer mechanic.

Tester notes:

> Leo, have you had the chance to test/review this one? Suzuki?

Sure.  I applied this patch on the perf/core branch (with latest
commit 3e4fbf36c1e3 'perf augmented_raw_syscalls: Move reading
filename to the loop') and passed testing with below steps:

  # perf record -e cs_etm/@tmc_etr0/ -S -m,64 --per-thread ./sort &
  [1] 19097
  Bubble sorting array of 30000 elements

  # kill -USR2 19097
  # kill -USR2 19097
  # kill -USR2 19097
  [ perf record: Woken up 4 times to write data ]
  [ perf record: Captured and wrote 0.753 MB perf.data ]

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190605161633.12245-1-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoipset: Fix memory accounting for hash types on resize
Stefano Brivio [Sun, 26 May 2019 21:14:06 +0000 (23:14 +0200)]
ipset: Fix memory accounting for hash types on resize

[ Upstream commit 11921796f4799ca9c61c4b22cc54d84aa69f8a35 ]

If a fresh array block is allocated during resize, the current in-memory
set size should be increased by the size of the block, not replaced by it.

Before the fix, adding entries to a hash set type, leading to a table
resize, caused an inconsistent memory size to be reported. This becomes
more obvious when swapping sets with similar sizes:

  # cat hash_ip_size.sh
  #!/bin/sh
  FAIL_RETRIES=10

  tries=0
  while [ ${tries} -lt ${FAIL_RETRIES} ]; do
   ipset create t1 hash:ip
   for i in `seq 1 4345`; do
   ipset add t1 1.2.$((i / 255)).$((i % 255))
   done
   t1_init="$(ipset list t1|sed -n 's/Size in memory: \(.*\)/\1/p')"

   ipset create t2 hash:ip
   for i in `seq 1 4360`; do
   ipset add t2 1.2.$((i / 255)).$((i % 255))
   done
   t2_init="$(ipset list t2|sed -n 's/Size in memory: \(.*\)/\1/p')"

   ipset swap t1 t2
   t1_swap="$(ipset list t1|sed -n 's/Size in memory: \(.*\)/\1/p')"
   t2_swap="$(ipset list t2|sed -n 's/Size in memory: \(.*\)/\1/p')"

   ipset destroy t1
   ipset destroy t2
   tries=$((tries + 1))

   if [ ${t1_init} -lt 10000 ] || [ ${t2_init} -lt 10000 ]; then
   echo "FAIL after ${tries} tries:"
   echo "T1 size ${t1_init}, after swap ${t1_swap}"
   echo "T2 size ${t2_init}, after swap ${t2_swap}"
   exit 1
   fi
  done
  echo "PASS"
  # echo -n 'func hash_ip4_resize +p' > /sys/kernel/debug/dynamic_debug/control
  # ./hash_ip_size.sh
  [ 2035.018673] attempt to resize set t1 from 10 to 11, t 00000000fe6551fa
  [ 2035.078583] set t1 resized from 10 (00000000fe6551fa) to 11 (00000000172a0163)
  [ 2035.080353] Table destroy by resize 00000000fe6551fa
  FAIL after 4 tries:
  T1 size 9064, after swap 71128
  T2 size 71128, after swap 9064

Reported-by: NOYB <JunkYardMail1@Frontier.com>
Fixes: 9e41f26a505c ("netfilter: ipset: Count non-static extension memory for userspace")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: sfp: add mutex to prevent concurrent state checks
Robert Hancock [Fri, 7 Jun 2019 16:42:36 +0000 (10:42 -0600)]
net: sfp: add mutex to prevent concurrent state checks

[ Upstream commit 2158e856f56bb762ef90f3ec244d41a519826f75 ]

sfp_check_state can potentially be called by both a threaded IRQ handler
and delayed work. If it is concurrently called, it could result in
incorrect state management. Add a st_mutex to protect the state - this
lock gets taken outside of code that checks and handle state changes, and
the existing sm_mutex nests inside of it.

Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoRAS/CEC: Fix pfn insertion
Borislav Petkov [Sat, 20 Apr 2019 10:53:05 +0000 (12:53 +0200)]
RAS/CEC: Fix pfn insertion

[ Upstream commit 6d8e294bf5f0e85c34e8b14b064e2965f53f38b0 ]

When inserting random PFNs for debugging the CEC through
(debugfs)/ras/cec/pfn, depending on the return value of pfn_set(),
multiple values get inserted per a single write.

That is because simple_attr_write() interprets a retval of 0 as
success and claims the whole input. However, pfn_set() returns the
cec_add_elem() value, which, if > 0 and smaller than the whole input
length, makes glibc continue issuing the write syscall until there's
input left:

  pfn_set
  simple_attr_write
  debugfs_attr_write
  full_proxy_write
  vfs_write
  ksys_write
  do_syscall_64
  entry_SYSCALL_64_after_hwframe

leading to those repeated calls.

Return 0 to fix that.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agos390/qdio: handle PENDING state for QEBSM devices
Julian Wiedmann [Mon, 3 Jun 2019 05:47:04 +0000 (07:47 +0200)]
s390/qdio: handle PENDING state for QEBSM devices

[ Upstream commit 04310324c6f482921c071444833e70fe861b73d9 ]

When a CQ-enabled device uses QEBSM for SBAL state inspection,
get_buf_states() can return the PENDING state for an Output Queue.
get_outbound_buffer_frontier() isn't prepared for this, and any PENDING
buffer will permanently stall all further completion processing on this
Queue.

This isn't a concern for non-QEBSM devices, as get_buf_states() for such
devices will manually turn PENDING buffers into EMPTY ones.

Fixes: 104ea556ee7f ("qdio: support asynchronous delivery of storage blocks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: axienet: Fix race condition causing TX hang
Robert Hancock [Thu, 6 Jun 2019 22:28:17 +0000 (16:28 -0600)]
net: axienet: Fix race condition causing TX hang

[ Upstream commit 7de44285c1f69ccfbe8be1d6a16fcd956681fee6 ]

It is possible that the interrupt handler fires and frees up space in
the TX ring in between checking for sufficient TX ring space and
stopping the TX queue in axienet_start_xmit. If this happens, the
queue wake from the interrupt handler will occur before the queue is
stopped, causing a lost wakeup and the adapter's transmit hanging.

To avoid this, after stopping the queue, check again whether there is
sufficient space in the TX ring. If so, wake up the queue again.

Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: fec: Do not use netdev messages too early
Fabio Estevam [Thu, 6 Jun 2019 12:40:33 +0000 (09:40 -0300)]
net: fec: Do not use netdev messages too early

[ Upstream commit a19a0582363b9a5f8ba812f34f1b8df394898780 ]

When a valid MAC address is not found the current messages
are shown:

fec 2188000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
fec 2188000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: aa:9f:25:eb:7e:aa

Since the network device has not been registered at this point, it is better
to use dev_err()/dev_info() instead, which will provide cleaner log
messages like these:

fec 2188000.ethernet: Invalid MAC address: 00:00:00:00:00:00
fec 2188000.ethernet: Using random MAC address: aa:9f:25:eb:7e:aa

Tested on a imx6dl-pico-pi board.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: stmmac: dwmac4: fix flow control issue
Biao Huang [Mon, 3 Jun 2019 01:58:06 +0000 (09:58 +0800)]
net: stmmac: dwmac4: fix flow control issue

[ Upstream commit ee326fd01e79dfa42014d55931260b68b9fa3273 ]

Current dwmac4_flow_ctrl will not clear
GMAC_RX_FLOW_CTRL_RFE/GMAC_RX_FLOW_CTRL_RFE bits,
so MAC hw will keep flow control on although expecting
flow control off by ethtool. Add codes to fix it.

Fixes: 477286b53f55 ("stmmac: add GMAC4 core support")
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocpupower : frequency-set -r option misses the last cpu in related cpu list
Abhishek Goel [Wed, 29 May 2019 09:30:33 +0000 (04:30 -0500)]
cpupower : frequency-set -r option misses the last cpu in related cpu list

[ Upstream commit 04507c0a9385cc8280f794a36bfff567c8cc1042 ]

To set frequency on specific cpus using cpupower, following syntax can
be used :
cpupower -c #i frequency-set -f #f -r

While setting frequency using cpupower frequency-set command, if we use
'-r' option, it is expected to set frequency for all cpus related to
cpu #i. But it is observed to be missing the last cpu in related cpu
list. This patch fixes the problem.

Signed-off-by: Abhishek Goel <huntbag@linux.vnet.ibm.com>
Reviewed-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: wl128x: Fix some error handling in fm_v4l2_init_video_device()
Kefeng Wang [Thu, 30 May 2019 07:25:49 +0000 (03:25 -0400)]
media: wl128x: Fix some error handling in fm_v4l2_init_video_device()

[ Upstream commit 69fbb3f47327d959830c94bf31893972b8c8f700 ]

X-Originating-IP: [10.175.113.25]
X-CFilter-Loop: Reflected
The fm_v4l2_init_video_device() forget to unregister v4l2/video device
in the error path, it could lead to UAF issue, eg,

  BUG: KASAN: use-after-free in atomic64_read include/asm-generic/atomic-instrumented.h:836 [inline]
  BUG: KASAN: use-after-free in atomic_long_read include/asm-generic/atomic-long.h:28 [inline]
  BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0x92/0x690 kernel/locking/mutex.c:1206
  Read of size 8 at addr ffff8881e84a7c70 by task v4l_id/3659

  CPU: 1 PID: 3659 Comm: v4l_id Not tainted 5.1.0 #8
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
  Call Trace:
   __dump_stack lib/dump_stack.c:77 [inline]
   dump_stack+0xa9/0x10e lib/dump_stack.c:113
   print_address_description+0x65/0x270 mm/kasan/report.c:187
   kasan_report+0x149/0x18d mm/kasan/report.c:317
   atomic64_read include/asm-generic/atomic-instrumented.h:836 [inline]
   atomic_long_read include/asm-generic/atomic-long.h:28 [inline]
   __mutex_unlock_slowpath+0x92/0x690 kernel/locking/mutex.c:1206
   fm_v4l2_fops_open+0xac/0x120 [fm_drv]
   v4l2_open+0x191/0x390 [videodev]
   chrdev_open+0x20d/0x570 fs/char_dev.c:417
   do_dentry_open+0x700/0xf30 fs/open.c:777
   do_last fs/namei.c:3416 [inline]
   path_openat+0x7c4/0x2a90 fs/namei.c:3532
   do_filp_open+0x1a5/0x2b0 fs/namei.c:3563
   do_sys_open+0x302/0x490 fs/open.c:1069
   do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe
  RIP: 0033:0x7f8180c17c8e
  ...
  Allocated by task 3642:
   set_track mm/kasan/common.c:87 [inline]
   __kasan_kmalloc.constprop.3+0xa0/0xd0 mm/kasan/common.c:497
   fm_drv_init+0x13/0x1000 [fm_drv]
   do_one_initcall+0xbc/0x47d init/main.c:901
   do_init_module+0x1b5/0x547 kernel/module.c:3456
   load_module+0x6405/0x8c10 kernel/module.c:3804
   __do_sys_finit_module+0x162/0x190 kernel/module.c:3898
   do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

  Freed by task 3642:
   set_track mm/kasan/common.c:87 [inline]
   __kasan_slab_free+0x130/0x180 mm/kasan/common.c:459
   slab_free_hook mm/slub.c:1429 [inline]
   slab_free_freelist_hook mm/slub.c:1456 [inline]
   slab_free mm/slub.c:3003 [inline]
   kfree+0xe1/0x270 mm/slub.c:3958
   fm_drv_init+0x1e6/0x1000 [fm_drv]
   do_one_initcall+0xbc/0x47d init/main.c:901
   do_init_module+0x1b5/0x547 kernel/module.c:3456
   load_module+0x6405/0x8c10 kernel/module.c:3804
   __do_sys_finit_module+0x162/0x190 kernel/module.c:3898
   do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Add relevant unregister functions to fix it.

Cc: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agolocking/lockdep: Fix merging of hlocks with non-zero references
Imre Deak [Fri, 24 May 2019 20:15:09 +0000 (23:15 +0300)]
locking/lockdep: Fix merging of hlocks with non-zero references

[ Upstream commit d9349850e188b8b59e5322fda17ff389a1c0cd7d ]

The sequence

static DEFINE_WW_CLASS(test_ww_class);

struct ww_acquire_ctx ww_ctx;
struct ww_mutex ww_lock_a;
struct ww_mutex ww_lock_b;
struct ww_mutex ww_lock_c;
struct mutex lock_c;

ww_acquire_init(&ww_ctx, &test_ww_class);

ww_mutex_init(&ww_lock_a, &test_ww_class);
ww_mutex_init(&ww_lock_b, &test_ww_class);
ww_mutex_init(&ww_lock_c, &test_ww_class);

mutex_init(&lock_c);

ww_mutex_lock(&ww_lock_a, &ww_ctx);

mutex_lock(&lock_c);

ww_mutex_lock(&ww_lock_b, &ww_ctx);
ww_mutex_lock(&ww_lock_c, &ww_ctx);

mutex_unlock(&lock_c); (*)

ww_mutex_unlock(&ww_lock_c);
ww_mutex_unlock(&ww_lock_b);
ww_mutex_unlock(&ww_lock_a);

ww_acquire_fini(&ww_ctx); (**)

will trigger the following error in __lock_release() when calling
mutex_release() at **:

DEBUG_LOCKS_WARN_ON(depth <= 0)

The problem is that the hlock merging happening at * updates the
references for test_ww_class incorrectly to 3 whereas it should've
updated it to 4 (representing all the instances for ww_ctx and
ww_lock_[abc]).

Fix this by updating the references during merging correctly taking into
account that we can have non-zero references (both for the hlock that we
merge into another hlock or for the hlock we are merging into).

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/r/20190524201509.9199-2-imre.deak@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agotua6100: Avoid build warnings.
David S. Miller [Thu, 30 May 2019 18:36:15 +0000 (11:36 -0700)]
tua6100: Avoid build warnings.

[ Upstream commit 621ccc6cc5f8d6730b740d31d4818227866c93c9 ]

Rename _P to _P_VAL and _R to _R_VAL to avoid global
namespace conflicts:

drivers/media/dvb-frontends/tua6100.c: In function ‘tua6100_set_params’:
drivers/media/dvb-frontends/tua6100.c:79: warning: "_P" redefined
 #define _P 32

In file included from ./include/acpi/platform/aclinux.h:54,
                 from ./include/acpi/platform/acenv.h:152,
                 from ./include/acpi/acpi.h:22,
                 from ./include/linux/acpi.h:34,
                 from ./include/linux/i2c.h:17,
                 from drivers/media/dvb-frontends/tua6100.h:30,
                 from drivers/media/dvb-frontends/tua6100.c:32:
./include/linux/ctype.h:14: note: this is the location of the previous definition
 #define _P 0x10 /* punct */

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocrypto: talitos - Align SEC1 accesses to 32 bits boundaries.
Christophe Leroy [Tue, 21 May 2019 13:34:18 +0000 (13:34 +0000)]
crypto: talitos - Align SEC1 accesses to 32 bits boundaries.

[ Upstream commit c9cca7034b34a2d82e9a03b757de2485c294851c ]

The MPC885 reference manual states:

SEC Lite-initiated 8xx writes can occur only on 32-bit-word boundaries, but
reads can occur on any byte boundary. Writing back a header read from a
non-32-bit-word boundary will yield unpredictable results.

In order to ensure that, cra_alignmask is set to 3 for SEC1.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 9c4a79653b35 ("crypto: talitos - Freescale integrated security engine (SEC) driver")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocrypto: talitos - properly handle split ICV.
Christophe Leroy [Tue, 21 May 2019 13:34:17 +0000 (13:34 +0000)]
crypto: talitos - properly handle split ICV.

[ Upstream commit eae55a586c3c8b50982bad3c3426e9c9dd7a0075 ]

The driver assumes that the ICV is as a single piece in the last
element of the scatterlist. This assumption is wrong.

This patch ensures that the ICV is properly handled regardless of
the scatterlist layout.

Fixes: 9c4a79653b35 ("crypto: talitos - Freescale integrated security engine (SEC) driver")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: phy: Check against net_device being NULL
Ioana Ciornei [Tue, 28 May 2019 17:38:09 +0000 (20:38 +0300)]
net: phy: Check against net_device being NULL

[ Upstream commit 82c76aca81187b3d28a6fb3062f6916450ce955e ]

In general, we don't want MAC drivers calling phy_attach_direct with the
net_device being NULL. Add checks against this in all the functions
calling it: phy_attach() and phy_connect_direct().

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: staging: media: davinci_vpfe: - Fix for memory leak if decoder initialization...
Shailendra Verma [Fri, 25 Nov 2016 04:57:34 +0000 (23:57 -0500)]
media: staging: media: davinci_vpfe: - Fix for memory leak if decoder initialization fails.

[ Upstream commit 6995a659101bd4effa41cebb067f9dc18d77520d ]

Fix to avoid possible memory leak if the decoder initialization
got failed.Free the allocated memory for file handle object
before return in case decoder initialization fails.

Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: mc-device.c: don't memset __user pointer contents
Hans Verkuil [Mon, 27 May 2019 09:31:13 +0000 (05:31 -0400)]
media: mc-device.c: don't memset __user pointer contents

[ Upstream commit 518fa4e0e0da97ea2e17c95ab57647ce748a96e2 ]

You can't memset the contents of a __user pointer. Instead, call copy_to_user to
copy links.reserved (which is zeroed) to the user memory.

This fixes this sparse warning:

SPARSE:drivers/media/mc/mc-device.c drivers/media/mc/mc-device.c:521:16:  warning: incorrect type in argument 1 (different address spaces)

Fixes: f49308878d720 ("media: media_device_enum_links32: clean a reserved field")

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agofscrypt: clean up some BUG_ON()s in block encryption/decryption
Eric Biggers [Mon, 20 May 2019 16:29:42 +0000 (09:29 -0700)]
fscrypt: clean up some BUG_ON()s in block encryption/decryption

[ Upstream commit eeacfdc68a104967162dfcba60f53f6f5b62a334 ]

Replace some BUG_ON()s with WARN_ON_ONCE() and returning an error code,
and move the check for len divisible by FS_CRYPTO_BLOCK_SIZE into
fscrypt_crypt_block() so that it's done for both encryption and
decryption, not just encryption.

Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoxfrm: Fix xfrm sel prefix length validation
Anirudh Gupta [Tue, 21 May 2019 15:29:47 +0000 (20:59 +0530)]
xfrm: Fix xfrm sel prefix length validation

[ Upstream commit b38ff4075a80b4da5cb2202d7965332ca0efb213 ]

Family of src/dst can be different from family of selector src/dst.
Use xfrm selector family to validate address prefix length,
while verifying new sa from userspace.

Validated patch with this command:
ip xfrm state add src 1.1.6.1 dst 1.1.6.2 proto esp spi 4260196 \
reqid 20004 mode tunnel aead "rfc4106(gcm(aes))" \
0x1111016400000000000000000000000044440001 128 \
sel src 1011:1:4::2/128 sel dst 1021:1:4::2/128 dev Port5

Fixes: 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.")
Signed-off-by: Anirudh Gupta <anirudh.gupta@sophos.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoaf_key: fix leaks in key_pol_get_resp and dump_sp.
Jeremy Sowden [Sat, 25 May 2019 18:09:35 +0000 (19:09 +0100)]
af_key: fix leaks in key_pol_get_resp and dump_sp.

[ Upstream commit 7c80eb1c7e2b8420477fbc998971d62a648035d9 ]

In both functions, if pfkey_xfrm_policy2msg failed we leaked the newly
allocated sk_buff.  Free it on error.

Fixes: 55569ce256ce ("Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.")
Reported-by: syzbot+4f0529365f7f2208d9f0@syzkaller.appspotmail.com
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agosignal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
Eric W. Biederman [Wed, 15 May 2019 17:29:52 +0000 (12:29 -0500)]
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig

[ Upstream commit f9070dc94542093fd516ae4ccea17ef46a4362c5 ]

The locking in force_sig_info is not prepared to deal with a task that
exits or execs (as sighand may change).  The is not a locking problem
in force_sig as force_sig is only built to handle synchronous
exceptions.

Further the function force_sig_info changes the signal state if the
signal is ignored, or blocked or if SIGNAL_UNKILLABLE will prevent the
delivery of the signal.  The signal SIGKILL can not be ignored and can
not be blocked and SIGNAL_UNKILLABLE won't prevent it from being
delivered.

So using force_sig rather than send_sig for SIGKILL is confusing
and pointless.

Because it won't impact the sending of the signal and and because
using force_sig is wrong, replace force_sig with send_sig.

Cc: Daniel Lezcano <daniel.lezcano@free.fr>
Cc: Serge Hallyn <serge@hallyn.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Fixes: cf3f89214ef6 ("pidns: add reboot_pid_ns() to handle the reboot syscall")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoqed: Set the doorbell address correctly
Michal Kalderon [Sun, 26 May 2019 12:22:25 +0000 (15:22 +0300)]
qed: Set the doorbell address correctly

[ Upstream commit 8366d520019f366fabd6c7a13032bdcd837e18d4 ]

In 100g mode the doorbell bar is united for both engines. Set
the correct offset in the hwfn so that the doorbell returned
for RoCE is in the affined hwfn.

Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Denis Bolotin <denis.bolotin@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: stmmac: dwmac4/5: Clear unused address entries
Jose Abreu [Fri, 24 May 2019 08:20:25 +0000 (10:20 +0200)]
net: stmmac: dwmac4/5: Clear unused address entries

[ Upstream commit 0620ec6c62a5a07625b65f699adc5d1b90394ee6 ]

In case we don't use a given address entry we need to clear it because
it could contain previous values that are no longer valid.

Found out while running stmmac selftests.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: stmmac: dwmac1000: Clear unused address entries
Jose Abreu [Fri, 24 May 2019 08:20:21 +0000 (10:20 +0200)]
net: stmmac: dwmac1000: Clear unused address entries

[ Upstream commit 9463c445590091202659cdfdd44b236acadfbd84 ]

In case we don't use a given address entry we need to clear it because
it could contain previous values that are no longer valid.

Found out while running stmmac selftests.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: media_device_enum_links32: clean a reserved field
Jungo Lin [Wed, 3 Apr 2019 01:44:27 +0000 (21:44 -0400)]
media: media_device_enum_links32: clean a reserved field

[ Upstream commit f49308878d7202e07d8761238e01bd0e5fce2750 ]

In v4l2-compliance utility, test MEDIA_IOC_ENUM_ENTITIES
will check whether reserved field of media_links_enum filled
with zero.

However, for 32 bit program, the reserved field is missing
copy from kernel space to user space in media_device_enum_links32
function.

This patch adds the cleaning a reserved field logic in
media_device_enum_links32 function.

Signed-off-by: Jungo Lin <jungo.lin@mediatek.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: vpss: fix a potential NULL pointer dereference
Kangjie Lu [Sat, 23 Mar 2019 02:51:06 +0000 (22:51 -0400)]
media: vpss: fix a potential NULL pointer dereference

[ Upstream commit e08f0761234def47961d3252eac09ccedfe4c6a0 ]

In case ioremap fails, the fix returns -ENOMEM to avoid NULL
pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: marvell-ccic: fix DMA s/g desc number calculation
Lubomir Rintel [Sun, 5 May 2019 14:00:23 +0000 (10:00 -0400)]
media: marvell-ccic: fix DMA s/g desc number calculation

[ Upstream commit 0c7aa32966dab0b8a7424e1b34c7f206817953ec ]

The commit d790b7eda953 ("[media] vb2-dma-sg: move dma_(un)map_sg here")
left dma_desc_nent unset. It previously contained the number of DMA
descriptors as returned from dma_map_sg().

We can now (since the commit referred to above) obtain the same value from
the sg_table and drop dma_desc_nent altogether.

Tested on OLPC XO-1.75 machine. Doesn't affect the OLPC XO-1's Cafe
driver, since that one doesn't do DMA.

[mchehab+samsung@kernel.org: fix a checkpatch warning]

Fixes: d790b7eda953 ("[media] vb2-dma-sg: move dma_(un)map_sg here")
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocrypto: talitos - fix skcipher failure due to wrong output IV
Christophe Leroy [Wed, 15 May 2019 12:29:03 +0000 (12:29 +0000)]
crypto: talitos - fix skcipher failure due to wrong output IV

[ Upstream commit 3e03e792865ae48b8cfc69a0b4d65f02f467389f ]

Selftests report the following:

[    2.984845] alg: skcipher: cbc-aes-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    2.995377] 00000000: 3d af ba 42 9d 9e b4 30 b4 22 da 80 2c 9f ac 41
[    3.032673] alg: skcipher: cbc-des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    3.043185] 00000000: fe dc ba 98 76 54 32 10
[    3.063238] alg: skcipher: cbc-3des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    3.073818] 00000000: 7d 33 88 93 0f 93 b2 42

This above dumps show that the actual output IV is indeed the input IV.
This is due to the IV not being copied back into the request.

This patch fixes that.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: spi: IR LED: add missing of table registration
Daniel Gomez [Mon, 22 Apr 2019 19:10:20 +0000 (15:10 -0400)]
media: spi: IR LED: add missing of table registration

[ Upstream commit 24e4cf770371df6ad49ed873f21618d9878f64c8 ]

MODULE_DEVICE_TABLE(of, <of_match_table> should be called to complete DT
OF mathing mechanism and register it.

Before this patch:
modinfo drivers/media/rc/ir-spi.ko  | grep alias

After this patch:
modinfo drivers/media/rc/ir-spi.ko  | grep alias
alias:          of:N*T*Cir-spi-ledC*
alias:          of:N*T*Cir-spi-led

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomedia: dvb: usb: fix use after free in dvb_usb_device_exit
Oliver Neukum [Tue, 30 Apr 2019 13:07:36 +0000 (09:07 -0400)]
media: dvb: usb: fix use after free in dvb_usb_device_exit

[ Upstream commit 6cf97230cd5f36b7665099083272595c55d72be7 ]

dvb_usb_device_exit() frees and uses the device name in that order.
Fix by storing the name in a buffer before freeing it.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+26ec41e9f788b3eba396@syzkaller.appspotmail.com
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agobatman-adv: fix for leaked TVLV handler.
Jeremy Sowden [Tue, 21 May 2019 19:58:57 +0000 (20:58 +0100)]
batman-adv: fix for leaked TVLV handler.

[ Upstream commit 17f78dd1bd624a4dd78ed5db3284a63ee807fcc3 ]

A handler for BATADV_TVLV_ROAM was being registered when the
translation-table was initialized, but not unregistered when the
translation-table was freed.  Unregister it.

Fixes: 122edaa05940 ("batman-adv: tvlv - convert roaming adv packet to use tvlv unicast packets")
Reported-by: syzbot+d454a826e670502484b8@syzkaller.appspotmail.com
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoath: DFS JP domain W56 fixed pulse type 3 RADAR detection
Anilkumar Kolli [Wed, 6 Mar 2019 17:36:11 +0000 (23:06 +0530)]
ath: DFS JP domain W56 fixed pulse type 3 RADAR detection

[ Upstream commit d8792393a783158cbb2c39939cb897dc5e5299b6 ]

Increase pulse width range from 1-2usec to 0-4usec.
During data traffic HW occasionally fails detecting radar pulses,
so that SW cannot get enough radar reports to achieve the success rate.

Tested ath10k hw and fw:
* QCA9888(10.4-3.5.1-00052)
* QCA4019(10.4-3.2.1.1-00017)
* QCA9984(10.4-3.6-00104)
* QCA988X(10.2.4-1.0-00041)

Tested ath9k hw: AR9300

Tested-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoath6kl: add some bounds checking
Dan Carpenter [Thu, 4 Apr 2019 08:56:51 +0000 (11:56 +0300)]
ath6kl: add some bounds checking

[ Upstream commit 5d6751eaff672ea77642e74e92e6c0ac7f9709ab ]

The "ev->traffic_class" and "reply->ac" variables come from the network
and they're used as an offset into the wmi->stream_exist_for_ac[] array.
Those variables are u8 so they can be 0-255 but the stream_exist_for_ac[]
array only has WMM_NUM_AC (4) elements.  We need to add a couple bounds
checks to prevent array overflows.

I also modified one existing check from "if (traffic_class > 3) {" to
"if (traffic_class >= WMM_NUM_AC) {" just to make them all consistent.

Fixes: bdcd81707973 (" Add ath6kl cleaned up driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoath9k: Check for errors when reading SREV register
Tim Schumacher [Mon, 18 Mar 2019 19:05:57 +0000 (20:05 +0100)]
ath9k: Check for errors when reading SREV register

[ Upstream commit 2f90c7e5d09437a4d8d5546feaae9f1cf48cfbe1 ]

Right now, if an error is encountered during the SREV register
read (i.e. an EIO in ath9k_regread()), that error code gets
passed all the way to __ath9k_hw_init(), where it is visible
during the "Chip rev not supported" message.

    ath9k_htc 1-1.4:1.0: ath9k_htc: HTC initialized with 33 credits
    ath: phy2: Mac Chip Rev 0x0f.3 is not supported by this driver
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath9k_htc: Failed to initialize the device

Check for -EIO explicitly in ath9k_hw_read_revisions() and return
a boolean based on the success of the operation. Check for that in
__ath9k_hw_init() and abort with a more debugging-friendly message
if reading the revisions wasn't successful.

    ath9k_htc 1-1.4:1.0: ath9k_htc: HTC initialized with 33 credits
    ath: phy2: Failed to read SREV register
    ath: phy2: Could not read hardware revision
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath9k_htc: Failed to initialize the device

This helps when debugging by directly showing the first point of
failure and it could prevent possible errors if a 0x0f.3 revision
is ever supported.

Signed-off-by: Tim Schumacher <timschumi@gmx.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoath10k: Do not send probe response template for mesh
Surabhi Vishnoi [Wed, 17 Apr 2019 08:31:46 +0000 (14:01 +0530)]
ath10k: Do not send probe response template for mesh

[ Upstream commit 97354f2c432788e3163134df6bb144f4b6289d87 ]

Currently mac80211 do not support probe response template for
mesh point. When WMI_SERVICE_BEACON_OFFLOAD is enabled, host
driver tries to configure probe response template for mesh, but
it fails because the interface type is not NL80211_IFTYPE_AP but
NL80211_IFTYPE_MESH_POINT.

To avoid this failure, skip sending probe response template to
firmware for mesh point.

Tested HW: WCN3990/QCA6174/QCA9984

Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agowil6210: fix potential out-of-bounds read
Gustavo A. R. Silva [Mon, 15 Apr 2019 14:56:46 +0000 (09:56 -0500)]
wil6210: fix potential out-of-bounds read

[ Upstream commit bfabdd6997323adbedccb13a3fed1967fb8cf8f5 ]

Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h:

enum gro_result {
        GRO_MERGED,
        GRO_MERGED_FREE,
        GRO_HELD,
        GRO_NORMAL,
        GRO_DROP,
        GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;

In case *rc* evaluates to 5, we end up having an out-of-bounds read
at drivers/net/wireless/ath/wil6210/txrx.c:821:

wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n",
     len, gro_res_str[rc]);

Fix this by adding element "GRO_CONSUMED" to array gro_res_str.

Addresses-Coverity-ID: 1444666 ("Out-of-bounds read")
Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agodmaengine: imx-sdma: fix use-after-free on probe error path
Sven Van Asbroeck [Mon, 24 Jun 2019 14:07:31 +0000 (10:07 -0400)]
dmaengine: imx-sdma: fix use-after-free on probe error path

[ Upstream commit 2b8066c3deb9140fdf258417a51479b2aeaa7622 ]

If probe() fails anywhere beyond the point where
sdma_get_firmware() is called, then a kernel oops may occur.

Problematic sequence of events:
1. probe() calls sdma_get_firmware(), which schedules the
   firmware callback to run when firmware becomes available,
   using the sdma instance structure as the context
2. probe() encounters an error, which deallocates the
   sdma instance structure
3. firmware becomes available, firmware callback is
   called with deallocated sdma instance structure
4. use after free - kernel oops !

Solution: only attempt to load firmware when we're certain
that probe() will succeed. This guarantees that the firmware
callback's context will remain valid.

Note that the remove() path is unaffected by this issue: the
firmware loader will increment the driver module's use count,
ensuring that the module cannot be unloaded while the
firmware callback is pending or running.

Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Reviewed-by: Robin Gong <yibin.gong@nxp.com>
[vkoul: fixed braces for if condition]
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoscsi: iscsi: set auth_protocol back to NULL if CHAP_A value is not supported
Maurizio Lombardi [Wed, 26 Jun 2019 17:27:34 +0000 (19:27 +0200)]
scsi: iscsi: set auth_protocol back to NULL if CHAP_A value is not supported

[ Upstream commit 5dd6c49339126c2c8df2179041373222362d6e49 ]

If the CHAP_A value is not supported, the chap_server_open() function
should free the auth_protocol pointer and set it to NULL, or we will leave
a dangling pointer around.

[   66.010905] Unsupported CHAP_A value
[   66.011660] Security negotiation failed.
[   66.012443] iSCSI Login negotiation failed.
[   68.413924] general protection fault: 0000 [#1] SMP PTI
[   68.414962] CPU: 0 PID: 1562 Comm: targetcli Kdump: loaded Not tainted 4.18.0-80.el8.x86_64 #1
[   68.416589] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[   68.417677] RIP: 0010:__kmalloc_track_caller+0xc2/0x210

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoarm64/efi: Mark __efistub_stext_offset as an absolute symbol explicitly
Nathan Chancellor [Wed, 26 Jun 2019 04:20:17 +0000 (21:20 -0700)]
arm64/efi: Mark __efistub_stext_offset as an absolute symbol explicitly

[ Upstream commit aa69fb62bea15126e744af2e02acc0d6cf3ed4da ]

After r363059 and r363928 in LLVM, a build using ld.lld as the linker
with CONFIG_RANDOMIZE_BASE enabled fails like so:

ld.lld: error: relocation R_AARCH64_ABS32 cannot be used against symbol
__efistub_stext_offset; recompile with -fPIC

Fangrui and Peter figured out that ld.lld is incorrectly considering
__efistub_stext_offset as a relative symbol because of the order in
which symbols are evaluated. _text is treated as an absolute symbol
and stext is a relative symbol, making __efistub_stext_offset a
relative symbol.

Adding ABSOLUTE will force ld.lld to evalute this expression in the
right context and does not change ld.bfd's behavior. ld.lld will
need to be fixed but the developers do not see a quick or simple fix
without some research (see the linked issue for further explanation).
Add this simple workaround so that ld.lld can continue to link kernels.

Link: https://github.com/ClangBuiltLinux/linux/issues/561
Link: https://github.com/llvm/llvm-project/commit/025a815d75d2356f2944136269aa5874721ec236
Link: https://github.com/llvm/llvm-project/commit/249fde85832c33f8b06c6b4ac65d1c4b96d23b83
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Debugged-by: Fangrui Song <maskray@google.com>
Debugged-by: Peter Smith <peter.smith@linaro.org>
Suggested-by: Fangrui Song <maskray@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
[will: add comment]
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoMIPS: fix build on non-linux hosts
Kevin Darbyshire-Bryant [Wed, 19 Jun 2019 14:08:18 +0000 (15:08 +0100)]
MIPS: fix build on non-linux hosts

[ Upstream commit 1196364f21ffe5d1e6d83cafd6a2edb89404a3ae ]

calc_vmlinuz_load_addr.c requires SZ_64K to be defined for alignment
purposes.  It included "../../../../include/linux/sizes.h" to define
that size, however "sizes.h" tries to include <linux/const.h> which
assumes linux system headers.  These may not exist eg. the following
error was encountered when building Linux for OpenWrt under macOS:

In file included from arch/mips/boot/compressed/calc_vmlinuz_load_addr.c:16:
arch/mips/boot/compressed/../../../../include/linux/sizes.h:11:10: fatal error: 'linux/const.h' file not found
         ^~~~~~~~~~

Change makefile to force building on local linux headers instead of
system headers.  Also change eye-watering relative reference in include
file spec.

Thanks to Jo-Philip Wich & Petr Štetiar for assistance in tracking this
down & fixing.

Suggested-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoMIPS: ath79: fix ar933x uart parity mode
Stefan Hellermann [Mon, 17 Jun 2019 13:43:59 +0000 (15:43 +0200)]
MIPS: ath79: fix ar933x uart parity mode

[ Upstream commit db13a5ba2732755cf13320f3987b77cf2a71e790 ]

While trying to get the uart with parity working I found setting even
parity enabled odd parity insted. Fix the register settings to match
the datasheet of AR9331.

A similar patch was created by 8devices, but not sent upstream.
https://github.com/8devices/openwrt-8devices/commit/77c5586ade3bb72cda010afad3f209ed0c98ea7c

Signed-off-by: Stefan Hellermann <stefan@the2masters.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoLinux 4.14.134
Greg Kroah-Hartman [Sun, 21 Jul 2019 07:04:43 +0000 (09:04 +0200)]
Linux 4.14.134

5 years agodrm/udl: move to embedding drm device inside udl device.
Dave Airlie [Mon, 15 Jul 2019 19:36:18 +0000 (13:36 -0600)]
drm/udl: move to embedding drm device inside udl device.

commit 6ecac85eadb9d4065b9038fa3d3c66d49038e14b upstream.

This should help with some of the lifetime issues, and move us away
from load/unload.

[rez] Regarding the backport to v4.14.y, the only difference is due to
the fact that in v4.14.y the udl_usb_probe() function still uses
drm_dev_unref() instead of drm_dev_put().

Backport notes:

On Mon, Jul 15, 2019 at 09:13:08PM -0400, Sasha Levin wrote:
> Hm, we don't need ac3b35f11a06 here? Why not? I'd love to document that
> with the backport.

Nope, we don't need that patch in the v4.14 backport.

In v4.19.y we have two functions, drm_dev_put() and drm_dev_unref(), which are
aliases for one another (drm_dev_unref() just calls drm_dev_put()).
drm_dev_unref() is the older of the two, and was introduced back in v4.0.
drm_dev_put() was introduced in v4.15 with

9a96f55034e41 drm: introduce drm_dev_{get/put} functions

and slowly callers were moved from the old name (_unref) to the new name
(_put).  The patch you mentioned, ac3b35f11a06, is one such patch where we are
replacing a drm_dev_unref() call with a drm_dev_put() call.  This doesn't have
a functional change, but was necessary so that the third patch in the v4.19.y
series I sent would apply cleanly.

For the v4.14.y series, though, the drm_dev_put() function hasn't yet been
defined and everyone is still using drm_dev_unref().  So, we don't need a
backport of ac3b35f11a06, and I also had a small backport change in the last
patch of the v4.14.y series where I had to change a drm_dev_put() call with a
drm_dev_unref() call.

Just for posterity, the drm_dev_unref() calls were eventually all changed to
drm_dev_put() in v5.0, and drm_dev_unref() was removed entirely.  That
happened with the following two patches:

808bad32ea423 drm: replace "drm_dev_unref" function with "drm_dev_put"
ba1d345401476 drm: remove deprecated "drm_dev_unref" function

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405031715.5959-4-airlied@gmail.com
Signed-off-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agodrm/udl: introduce a macro to convert dev to udl.
Dave Airlie [Mon, 15 Jul 2019 19:36:17 +0000 (13:36 -0600)]
drm/udl: introduce a macro to convert dev to udl.

commit fd96e0dba19c53c2d66f2a398716bb74df8ca85e upstream.

This just makes it easier to later embed drm into udl.

[rez] Regarding the backport to v4.14.y, the only difference is due to
the fact that in v4.14.y the udl_gem_mmap() function doesn't have a
local 'struct udl_device' pointer so it didn't need to be converted.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405031715.5959-3-airlied@gmail.com
Signed-off-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocrypto/NX: Set receive window credits to max number of CRBs in RxFIFO
Haren Myneni [Tue, 18 Jun 2019 19:09:22 +0000 (12:09 -0700)]
crypto/NX: Set receive window credits to max number of CRBs in RxFIFO

commit e52d484d9869eb291140545746ccbe5ffc7c9306 upstream.

System gets checkstop if RxFIFO overruns with more requests than the
maximum possible number of CRBs in FIFO at the same time. The max number
of requests per window is controlled by window credits. So find max
CRBs from FIFO size and set it to receive window credits.

Fixes: b0d6c9bab5e4 ("crypto/nx: Add P9 NX support for 842 compression engine")
CC: stable@vger.kernel.org # v4.14+
Signed-off-by:Haren Myneni <haren@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
5 years agos390/qdio: don't touch the dsci in tiqdio_add_input_queues()
Julian Wiedmann [Tue, 18 Jun 2019 11:12:20 +0000 (13:12 +0200)]
s390/qdio: don't touch the dsci in tiqdio_add_input_queues()

commit ac6639cd3db607d386616487902b4cc1850a7be5 upstream.

Current code sets the dsci to 0x00000080. Which doesn't make any sense,
as the indicator area is located in the _left-most_ byte.

Worse: if the dsci is the _shared_ indicator, this potentially clears
the indication of activity for a _different_ device.
tiqdio_thinint_handler() will then have no reason to call that device's
IRQ handler, and the device ends up stalling.

Fixes: d0c9d4a89fff ("[S390] qdio: set correct bit in dsci")
Cc: <stable@vger.kernel.org>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agos390/qdio: (re-)initialize tiqdio list entries
Julian Wiedmann [Tue, 18 Jun 2019 09:25:59 +0000 (11:25 +0200)]
s390/qdio: (re-)initialize tiqdio list entries

commit e54e4785cb5cb4896cf4285964aeef2125612fb2 upstream.

When tiqdio_remove_input_queues() removes a queue from the tiq_list as
part of qdio_shutdown(), it doesn't re-initialize the queue's list entry
and the prev/next pointers go stale.

If a subsequent qdio_establish() fails while sending the ESTABLISH cmd,
it calls qdio_shutdown() again in QDIO_IRQ_STATE_ERR state and
tiqdio_remove_input_queues() will attempt to remove the queue entry a
second time. This dereferences the stale pointers, and bad things ensue.
Fix this by re-initializing the list entry after removing it from the
list.

For good practice also initialize the list entry when the queue is first
allocated, and remove the quirky checks that papered over this omission.
Note that prior to
commit e521813468f7 ("s390/qdio: fix access to uninitialized qdio_q fields"),
these checks were bogus anyway.

setup_queues_misc() clears the whole queue struct, and thus needs to
re-init the prev/next pointers as well.

Fixes: 779e6e1c724d ("[S390] qdio: new qdio driver.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agos390: fix stfle zero padding
Heiko Carstens [Mon, 17 Jun 2019 12:02:41 +0000 (14:02 +0200)]
s390: fix stfle zero padding

commit 4f18d869ffd056c7858f3d617c71345cf19be008 upstream.

The stfle inline assembly returns the number of double words written
(condition code 0) or the double words it would have written
(condition code 3), if the memory array it got as parameter would have
been large enough.

The current stfle implementation assumes that the array is always
large enough and clears those parts of the array that have not been
written to with a subsequent memset call.

If however the array is not large enough memset will get a negative
length parameter, which means that memset clears memory until it gets
an exception and the kernel crashes.

To fix this simply limit the maximum length. Move also the inline
assembly to an extra function to avoid clobbering of register 0, which
might happen because of the added min_t invocation together with code
instrumentation.

The bug was introduced with commit 14375bc4eb8d ("[S390] cleanup
facility list handling") but was rather harmless, since it would only
write to a rather large array. It became a potential problem with
commit 3ab121ab1866 ("[S390] kernel: Add z/VM LGR detection"). Since
then it writes to an array with only four double words, while some
machines already deliver three double words. As soon as machines have
a facility bit within the fifth double a crash on IPL would happen.

Fixes: 14375bc4eb8d ("[S390] cleanup facility list handling")
Cc: <stable@vger.kernel.org> # v2.6.37+
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoARC: hide unused function unw_hdr_alloc
Arnd Bergmann [Wed, 3 Jul 2019 13:39:25 +0000 (15:39 +0200)]
ARC: hide unused function unw_hdr_alloc

commit fd5de2721ea7d16e2b16c4049ac49f229551b290 upstream.

As kernelci.org reports, this function is not used in
vdk_hs38_defconfig:

arch/arc/kernel/unwind.c:188:14: warning: 'unw_hdr_alloc' defined but not used [-Wunused-function]

Fixes: bc79c9a72165 ("ARC: dw2 unwind: Reinstante unwinding out of modules")
Link: https://kernelci.org/build/id/5d1cae3f59b514300340c132/logs/
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agolinux/kernel.h: fix overflow for DIV_ROUND_UP_ULL
Vinod Koul [Fri, 28 Jun 2019 19:07:21 +0000 (12:07 -0700)]
linux/kernel.h: fix overflow for DIV_ROUND_UP_ULL

[ Upstream commit 8f9fab480c7a87b10bb5440b5555f370272a5d59 ]

DIV_ROUND_UP_ULL adds the two arguments and then invokes
DIV_ROUND_DOWN_ULL.  But on a 32bit system the addition of two 32 bit
values can overflow.  DIV_ROUND_DOWN_ULL does it correctly and stashes
the addition into a unsigned long long so cast the result to unsigned
long long here to avoid the overflow condition.

[akpm@linux-foundation.org: DIV_ROUND_UP_ULL must be an rval]
Link: http://lkml.kernel.org/r/20190625100518.30753-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agocpu/hotplug: Fix out-of-bounds read when setting fail state
Eiichi Tsukata [Thu, 27 Jun 2019 02:47:32 +0000 (11:47 +0900)]
cpu/hotplug: Fix out-of-bounds read when setting fail state

[ Upstream commit 33d4a5a7a5b4d02915d765064b2319e90a11cbde ]

Setting invalid value to /sys/devices/system/cpu/cpuX/hotplug/fail
can control `struct cpuhp_step *sp` address, results in the following
global-out-of-bounds read.

Reproducer:

  # echo -2 > /sys/devices/system/cpu/cpu0/hotplug/fail

KASAN report:

  BUG: KASAN: global-out-of-bounds in write_cpuhp_fail+0x2cd/0x2e0
  Read of size 8 at addr ffffffff89734438 by task bash/1941

  CPU: 0 PID: 1941 Comm: bash Not tainted 5.2.0-rc6+ #31
  Call Trace:
   write_cpuhp_fail+0x2cd/0x2e0
   dev_attr_store+0x58/0x80
   sysfs_kf_write+0x13d/0x1a0
   kernfs_fop_write+0x2bc/0x460
   vfs_write+0x1e1/0x560
   ksys_write+0x126/0x250
   do_syscall_64+0xc1/0x390
   entry_SYSCALL_64_after_hwframe+0x49/0xbe
  RIP: 0033:0x7f05e4f4c970

  The buggy address belongs to the variable:
   cpu_hotplug_lock+0x98/0xa0

  Memory state around the buggy address:
   ffffffff89734300: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
   ffffffff89734380: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
  >ffffffff89734400: 00 00 00 00 fa fa fa fa 00 00 00 00 fa fa fa fa
                                          ^
   ffffffff89734480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   ffffffff89734500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Add a sanity check for the value written from user space.

Fixes: 1db49484f21ed ("smp/hotplug: Hotplug state fail injection")
Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Link: https://lkml.kernel.org/r/20190627024732.31672-1-devel@etsukata.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agox86/boot/64: Fix crash if kernel image crosses page table boundary
Kirill A. Shutemov [Thu, 20 Jun 2019 11:23:45 +0000 (14:23 +0300)]
x86/boot/64: Fix crash if kernel image crosses page table boundary

[ Upstream commit 81c7ed296dcd02bc0b4488246d040e03e633737a ]

A kernel which boots in 5-level paging mode crashes in a small percentage
of cases if KASLR is enabled.

This issue was tracked down to the case when the kernel image unpacks in a
way that it crosses an 1G boundary. The crash is caused by an overrun of
the PMD page table in __startup_64() and corruption of P4D page table
allocated next to it. This particular issue is not visible with 4-level
paging as P4D page tables are not used.

But the P4D and the PUD calculation have similar problems.

The PMD index calculation is wrong due to operator precedence, which fails
to confine the PMDs in the PMD array on wrap around.

The P4D calculation for 5-level paging and the PUD calculation calculate
the first index correctly, but then blindly increment it which causes the
same issue when a kernel image is located across a 512G and for 5-level
paging across a 46T boundary.

This wrap around mishandling was introduced when these parts moved from
assembly to C.

Restore it to the correct behaviour.

Fixes: c88d71508e36 ("x86/boot/64: Rewrite startup_64() in C")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190620112345.28833-1-kirill.shutemov@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agodm verity: use message limit for data block corruption message
Milan Broz [Thu, 20 Jun 2019 11:00:19 +0000 (13:00 +0200)]
dm verity: use message limit for data block corruption message

[ Upstream commit 2eba4e640b2c4161e31ae20090a53ee02a518657 ]

DM verity should also use DMERR_LIMIT to limit repeat data block
corruption messages.

Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoARM: dts: imx6ul: fix PWM[1-4] interrupts
Sébastien Szymanski [Tue, 18 Jun 2019 15:58:34 +0000 (17:58 +0200)]
ARM: dts: imx6ul: fix PWM[1-4] interrupts

[ Upstream commit 3cf10132ac8d536565f2c02f60a3aeb315863a52 ]

According to the i.MX6UL/L RM, table 3.1 "ARM Cortex A7 domain interrupt
summary", the interrupts for the PWM[1-4] go from 83 to 86.

Fixes: b9901fe84f02 ("ARM: dts: imx6ul: add pwm[1-4] nodes")
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agosis900: fix TX completion
Sergej Benilov [Thu, 20 Jun 2019 09:02:18 +0000 (11:02 +0200)]
sis900: fix TX completion

[ Upstream commit 8ac8a01092b2added0749ef937037bf1912e13e3 ]

Since commit 605ad7f184b60cfaacbc038aa6c55ee68dee3c89 "tcp: refine TSO autosizing",
outbound throughput is dramatically reduced for some connections, as sis900
is doing TX completion within idle states only.

Make TX completion happen after every transmitted packet.

Test:
netperf

before patch:
> netperf -H remote -l -2000000 -- -s 1000000
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to 95.223.112.76 () port 0 AF_INET : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380 327680 327680    253.44      0.06

after patch:
> netperf -H remote -l -10000000 -- -s 1000000
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to 95.223.112.76 () port 0 AF_INET : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380 327680 327680    5.38       14.89

Thx to Dave Miller and Eric Dumazet for helpful hints

Signed-off-by: Sergej Benilov <sergej.benilov@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoppp: mppe: Add softdep to arc4
Takashi Iwai [Wed, 19 Jun 2019 13:34:07 +0000 (15:34 +0200)]
ppp: mppe: Add softdep to arc4

[ Upstream commit aad1dcc4f011ea409850e040363dff1e59aa4175 ]

The arc4 crypto is mandatory at ppp_mppe probe time, so let's put a
softdep line, so that the corresponding module gets prepared
gracefully.  Without this, a simple inclusion to initrd via dracut
failed due to the missing dependency, for example.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agobe2net: fix link failure after ethtool offline test
Petr Oros [Wed, 19 Jun 2019 12:29:42 +0000 (14:29 +0200)]
be2net: fix link failure after ethtool offline test

[ Upstream commit 2e5db6eb3c23e5dc8171eb8f6af7a97ef9fcf3a9 ]

Certain cards in conjunction with certain switches need a little more
time for link setup that results in ethtool link test failure after
offline test. Patch adds a loop that waits for a link setup finish.

Changes in v2:
- added fixes header

Fixes: 4276e47e2d1c ("be2net: Add link test to list of ethtool self tests.")
Signed-off-by: Petr Oros <poros@redhat.com>
Reviewed-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoARM: omap2: remove incorrect __init annotation
Arnd Bergmann [Wed, 19 Jun 2019 13:04:54 +0000 (15:04 +0200)]
ARM: omap2: remove incorrect __init annotation

[ Upstream commit 27e23d8975270df6999f8b5b3156fc0c04927451 ]

omap3xxx_prm_enable_io_wakeup() is marked __init, but its caller is not, so
we get a warning with clang-8:

WARNING: vmlinux.o(.text+0x343c8): Section mismatch in reference from the function omap3xxx_prm_late_init() to the function .init.text:omap3xxx_prm_enable_io_wakeup()
The function omap3xxx_prm_late_init() references
the function __init omap3xxx_prm_enable_io_wakeup().
This is often because omap3xxx_prm_late_init lacks a __init
annotation or the annotation of omap3xxx_prm_enable_io_wakeup is wrong.

When building with gcc, omap3xxx_prm_enable_io_wakeup() is always
inlined, so we never noticed in the past.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoperf/core: Fix perf_sample_regs_user() mm check
Peter Zijlstra [Wed, 29 May 2019 12:37:24 +0000 (14:37 +0200)]
perf/core: Fix perf_sample_regs_user() mm check

[ Upstream commit 085ebfe937d7a7a5df1729f35a12d6d655fea68c ]

perf_sample_regs_user() uses 'current->mm' to test for the presence of
userspace, but this is insufficient, consider use_mm().

A better test is: '!(current->flags & PF_KTHREAD)', exec() clears
PF_KTHREAD after it sets the new ->mm but before it drops to userspace
for the first time.

Possibly obsoletes: bf05fc25f268 ("powerpc/perf: Fix oops when kthread execs user process")

Reported-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Reported-by: Young Xiao <92siuyang@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 4018994f3d87 ("perf: Add ability to attach user level registers dump to sample")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoefi/bgrt: Drop BGRT status field reserved bits check
Hans de Goede [Wed, 29 May 2019 13:28:28 +0000 (15:28 +0200)]
efi/bgrt: Drop BGRT status field reserved bits check

[ Upstream commit a483fcab38b43fb34a7f12ab1daadd3907f150e2 ]

Starting with ACPI 6.2 bits 1 and 2 of the BGRT status field are no longer
reserved. These bits are now used to indicate if the image needs to be
rotated before being displayed.

The first device using these bits has now shown up (the GPD MicroPC) and
the reserved bits check causes us to reject the valid BGRT table on this
device.

Rather then changing the reserved bits check, allowing only the 2 new bits,
instead just completely remove it so that we do not end up with a similar
problem when more bits are added in the future.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoclk: ti: clkctrl: Fix returning uninitialized data
Tony Lindgren [Thu, 30 May 2019 06:55:57 +0000 (23:55 -0700)]
clk: ti: clkctrl: Fix returning uninitialized data

[ Upstream commit 41b3588dba6ef4b7995735a97e47ff0aeea6c276 ]

If we do a clk_get() for a clock that does not exists, we have
_ti_omap4_clkctrl_xlate() return uninitialized data if no match
is found. This can be seen in some cases with SLAB_DEBUG enabled:

Unable to handle kernel paging request at virtual address 5a5a5a5a
...
clk_hw_create_clk.part.33
sysc_notifier_call
notifier_call_chain
blocking_notifier_call_chain
device_add

Let's fix this by setting a found flag only when we find a match.

Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Fixes: 88a172526c32 ("clk: ti: add support for clkctrl clocks")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoMIPS: Remove superfluous check for __linux__
Sean Young [Fri, 16 Nov 2018 16:09:39 +0000 (16:09 +0000)]
MIPS: Remove superfluous check for __linux__

commit 1287533d3d95d5ad8b02773733044500b1be06bc upstream.

When building BPF code using "clang -target bpf -c", clang does not
define __linux__.

To build BPF IR decoders the include linux/lirc.h is needed which
includes linux/types.h. Currently this workaround is needed:

https://git.linuxtv.org/v4l-utils.git/commit/?id=dd3ff81f58c4e1e6f33765dc61ad33c48ae6bb07

This check might otherwise be useful to stop users from using a non-linux
compiler, but if you're doing that you are going to have a lot more
trouble anyway.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21149/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoVMCI: Fix integer overflow in VMCI handle arrays
Vishnu DASA [Fri, 24 May 2019 15:13:10 +0000 (15:13 +0000)]
VMCI: Fix integer overflow in VMCI handle arrays

commit 1c2eb5b2853c9f513690ba6b71072d8eb65da16a upstream.

The VMCI handle array has an integer overflow in
vmci_handle_arr_append_entry when it tries to expand the array. This can be
triggered from a guest, since the doorbell link hypercall doesn't impose a
limit on the number of doorbell handles that a VM can create in the
hypervisor, and these handles are stored in a handle array.

In this change, we introduce a mandatory max capacity for handle
arrays/lists to avoid excessive memory usage.

Signed-off-by: Vishnu Dasa <vdasa@vmware.com>
Reviewed-by: Adit Ranadive <aditr@vmware.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agocarl9170: fix misuse of device driver API
Christian Lamparter [Sat, 8 Jun 2019 14:49:47 +0000 (16:49 +0200)]
carl9170: fix misuse of device driver API

commit feb09b2933275a70917a869989ea2823e7356be8 upstream.

This patch follows Alan Stern's recent patch:
"p54: Fix race between disconnect and firmware loading"

that overhauled carl9170 buggy firmware loading and driver
unbinding procedures.

Since the carl9170 code was adapted from p54 it uses the
same functions and is likely to have the same problem, but
it's just that the syzbot hasn't reproduce them (yet).

a summary from the changes (copied from the p54 patch):
 * Call usb_driver_release_interface() rather than
   device_release_driver().

 * Lock udev (the interface's parent) before unbinding the
   driver instead of locking udev->parent.

 * During the firmware loading process, take a reference
   to the USB interface instead of the USB device.

 * Don't take an unnecessary reference to the device during
   probe (and then don't drop it during disconnect).

and

 * Make sure to prevent use-after-free bugs by explicitly
   setting the driver context to NULL after signaling the
   completion.

Cc: <stable@vger.kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agobinder: fix memory leak in error path
Todd Kjos [Fri, 21 Jun 2019 17:54:15 +0000 (10:54 -0700)]
binder: fix memory leak in error path

commit 1909a671dbc3606685b1daf8b22a16f65ea7edda upstream.

syzkallar found a 32-byte memory leak in a rarely executed error
case. The transaction complete work item was not freed if put_user()
failed when writing the BR_TRANSACTION_COMPLETE to the user command
buffer. Fixed by freeing it before put_user() is called.

Reported-by: syzbot+182ce46596c3f2e1eb24@syzkaller.appspotmail.com
Signed-off-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agostaging: comedi: amplc_pci230: fix null pointer deref on interrupt
Ian Abbott [Wed, 26 Jun 2019 13:17:39 +0000 (14:17 +0100)]
staging: comedi: amplc_pci230: fix null pointer deref on interrupt

commit 7379e6baeddf580d01feca650ec1ad508b6ea8ee upstream.

The interrupt handler `pci230_interrupt()` causes a null pointer
dereference for a PCI260 card.  There is no analog output subdevice for
a PCI260.  The `dev->write_subdev` subdevice pointer and therefore the
`s_ao` subdevice pointer variable will be `NULL` for a PCI260.  The
following call near the end of the interrupt handler results in the null
pointer dereference for a PCI260:

comedi_handle_events(dev, s_ao);

Fix it by only calling the above function if `s_ao` is valid.

Note that the other uses of `s_ao` in the calls
`pci230_handle_ao_nofifo(dev, s_ao);` and `pci230_handle_ao_fifo(dev,
s_ao);` will never be reached for a PCI260, so they are safe.

Fixes: 39064f23284c ("staging: comedi: amplc_pci230: use comedi_handle_events()")
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agostaging: comedi: dt282x: fix a null pointer deref on interrupt
Ian Abbott [Wed, 26 Jun 2019 13:18:04 +0000 (14:18 +0100)]
staging: comedi: dt282x: fix a null pointer deref on interrupt

commit b8336be66dec06bef518030a0df9847122053ec5 upstream.

The interrupt handler `dt282x_interrupt()` causes a null pointer
dereference for those supported boards that have no analog output
support.  For these boards, `dev->write_subdev` will be `NULL` and
therefore the `s_ao` subdevice pointer variable will be `NULL`.  In that
case, the following call near the end of the interrupt handler results
in a null pointer dereference:

comedi_handle_events(dev, s_ao);

Fix it by only calling the above function if `s_ao` is valid.

(There are other uses of `s_ao` by the interrupt handler that may or may
not be reached depending on values of hardware registers.  Trust that
they are reliable for now.)

Note:
commit 4f6f009b204f ("staging: comedi: dt282x: use comedi_handle_events()")
propagates an earlier error from
commit f21c74fa4cfe ("staging: comedi: dt282x: use cfc_handle_events()").

Fixes: 4f6f009b204f ("staging: comedi: dt282x: use comedi_handle_events()")
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agousb: renesas_usbhs: add a workaround for a race condition of workqueue
Yoshihiro Shimoda [Wed, 26 Jun 2019 13:06:33 +0000 (22:06 +0900)]
usb: renesas_usbhs: add a workaround for a race condition of workqueue

commit b2357839c56ab7d06bcd4e866ebc2d0e2b7997f3 upstream.

The old commit 6e4b74e4690d ("usb: renesas: fix scheduling in atomic
context bug") fixed an atomic issue by using workqueue for the shdmac
dmaengine driver. However, this has a potential race condition issue
between the work pending and usbhsg_ep_free_request() in gadget mode.
When usbhsg_ep_free_request() is called while pending the queue,
since the work_struct will be freed and then the work handler is
called, kernel panic happens on process_one_work().

To fix the issue, if we could call cancel_work_sync() at somewhere
before the free request, it could be easy. However,
the usbhsg_ep_free_request() is called on atomic (e.g. f_ncm driver
calls free request via gether_disconnect()).

For now, almost all users are having "USB-DMAC" and the DMAengine
driver can be used on atomic. So, this patch adds a workaround for
a race condition to call the DMAengine APIs without the workqueue.

This means we still have TODO on shdmac environment (SH7724), but
since it doesn't have SMP, the race condition might not happen.

Fixes: ab330cf3888d ("usb: renesas_usbhs: add support for USB-DMAC")
Cc: <stable@vger.kernel.org> # v4.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agousb: gadget: ether: Fix race between gether_disconnect and rx_submit
Kiruthika Varadarajan [Tue, 18 Jun 2019 08:39:06 +0000 (08:39 +0000)]
usb: gadget: ether: Fix race between gether_disconnect and rx_submit

commit d29fcf7078bc8be2b6366cbd4418265b53c94fac upstream.

On spin lock release in rx_submit, gether_disconnect get a chance to
run, it makes port_usb NULL, rx_submit access NULL port USB, hence null
pointer crash.

Fixed by releasing the lock in rx_submit after port_usb is used.

Fixes: 2b3d942c4878 ("usb ethernet gadget: split out network core")
Cc: <stable@vger.kernel.org>
Signed-off-by: Kiruthika Varadarajan <Kiruthika.Varadarajan@harman.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agop54usb: Fix race between disconnect and firmware loading
Alan Stern [Mon, 20 May 2019 14:44:21 +0000 (10:44 -0400)]
p54usb: Fix race between disconnect and firmware loading

commit 6e41e2257f1094acc37618bf6c856115374c6922 upstream.

The syzbot fuzzer found a bug in the p54 USB wireless driver.  The
issue involves a race between disconnect and the firmware-loader
callback routine, and it has several aspects.

One big problem is that when the firmware can't be loaded, the
callback routine tries to unbind the driver from the USB _device_ (by
calling device_release_driver) instead of from the USB _interface_ to
which it is actually bound (by calling usb_driver_release_interface).

The race involves access to the private data structure.  The driver's
disconnect handler waits for a completion that is signalled by the
firmware-loader callback routine.  As soon as the completion is
signalled, you have to assume that the private data structure may have
been deallocated by the disconnect handler -- even if the firmware was
loaded without errors.  However, the callback routine does access the
private data several times after that point.

Another problem is that, in order to ensure that the USB device
structure hasn't been freed when the callback routine runs, the driver
takes a reference to it.  This isn't good enough any more, because now
that the callback routine calls usb_driver_release_interface, it has
to ensure that the interface structure hasn't been freed.

Finally, the driver takes an unnecessary reference to the USB device
structure in the probe function and drops the reference in the
disconnect handler.  This extra reference doesn't accomplish anything,
because the USB core already guarantees that a device structure won't
be deallocated while a driver is still bound to any of its interfaces.

To fix these problems, this patch makes the following changes:

Call usb_driver_release_interface() rather than
device_release_driver().

Don't signal the completion until after the important
information has been copied out of the private data structure,
and don't refer to the private data at all thereafter.

Lock udev (the interface's parent) before unbinding the driver
instead of locking udev->parent.

During the firmware loading process, take a reference to the
USB interface instead of the USB device.

Don't take an unnecessary reference to the device during probe
(and then don't drop it during disconnect).

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: syzbot+200d4bb11b23d929335f@syzkaller.appspotmail.com
CC: <stable@vger.kernel.org>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoRevert "serial: 8250: Don't service RX FIFO if interrupts are disabled"
Oliver Barta [Wed, 19 Jun 2019 08:16:39 +0000 (10:16 +0200)]
Revert "serial: 8250: Don't service RX FIFO if interrupts are disabled"

commit 3f2640ed7be838c3f05c0d2b0f7c7508e7431e48 upstream.

This reverts commit 2e9fe539108320820016f78ca7704a7342788380.

Reading LSR unconditionally but processing the error flags only if
UART_IIR_RDI bit was set before in IIR may lead to a loss of transmission
error information on UARTs where the transmission error flags are cleared
by a read of LSR. Information are lost in case an error is detected right
before the read of LSR while processing e.g. an UART_IIR_THRI interrupt.

Signed-off-by: Oliver Barta <o.barta89@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Fixes: 2e9fe5391083 ("serial: 8250: Don't service RX FIFO if interrupts are disabled")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoUSB: serial: option: add support for GosunCn ME3630 RNDIS mode
Jörgen Storvist [Tue, 18 Jun 2019 22:30:19 +0000 (00:30 +0200)]
USB: serial: option: add support for GosunCn ME3630 RNDIS mode

commit aed2a26283528fb69c38e414f649411aa48fb391 upstream.

Added USB IDs for GosunCn ME3630 cellular module in RNDIS mode.

T:  Bus=03 Lev=01 Prnt=01 Port=01 Cnt=03 Dev#= 18 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=19d2 ProdID=0601 Rev=03.18
S:  Manufacturer=Android
S:  Product=Android
S:  SerialNumber=b950269c
C:  #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=e0(wlcon) Sub=01 Prot=03 Driver=rndis_host
I:  If#=0x1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
I:  If#=0x2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
I:  If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option

Signed-off-by: Jörgen Storvist <jorgen.storvist@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoUSB: serial: ftdi_sio: add ID for isodebug v1
Andreas Fritiofson [Fri, 28 Jun 2019 13:08:34 +0000 (15:08 +0200)]
USB: serial: ftdi_sio: add ID for isodebug v1

commit f8377eff548170e8ea8022c067a1fbdf9e1c46a8 upstream.

This adds the vid:pid of the isodebug v1 isolated JTAG/SWD+UART. Only the
second channel is available for use as a serial port.

Signed-off-by: Andreas Fritiofson <andreas.fritiofson@unjo.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agomwifiex: Don't abort on small, spec-compliant vendor IEs
Brian Norris [Sat, 15 Jun 2019 00:13:20 +0000 (17:13 -0700)]
mwifiex: Don't abort on small, spec-compliant vendor IEs

commit 63d7ef36103d26f20325a921ecc96a3288560146 upstream.

Per the 802.11 specification, vendor IEs are (at minimum) only required
to contain an OUI. A type field is also included in ieee80211.h (struct
ieee80211_vendor_ie) but doesn't appear in the specification. The
remaining fields (subtype, version) are a convention used in WMM
headers.

Thus, we should not reject vendor-specific IEs that have only the
minimum length (3 bytes) -- we should skip over them (since we only want
to match longer IEs, that match either WMM or WPA formats). We can
reject elements that don't have the minimum-required 3 byte OUI.

While we're at it, move the non-standard subtype and version fields into
the WMM structs, to avoid this confusion in the future about generic
"vendor header" attributes.

Fixes: 685c9b7750bf ("mwifiex: Abort at too short BSS descriptor element")
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agomwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies()
Takashi Iwai [Fri, 31 May 2019 13:18:41 +0000 (15:18 +0200)]
mwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies()

commit 69ae4f6aac1578575126319d3f55550e7e440449 upstream.

A few places in mwifiex_uap_parse_tail_ies() perform memcpy()
unconditionally, which may lead to either buffer overflow or read over
boundary.

This patch addresses the issues by checking the read size and the
destination size at each place more properly.  Along with the fixes,
the patch cleans up the code slightly by introducing a temporary
variable for the token size, and unifies the error path with the
standard goto statement.

Reported-by: huangwen <huangwen@venustech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agomwifiex: Abort at too short BSS descriptor element
Takashi Iwai [Wed, 29 May 2019 12:52:20 +0000 (14:52 +0200)]
mwifiex: Abort at too short BSS descriptor element

commit 685c9b7750bfacd6fc1db50d86579980593b7869 upstream.

Currently mwifiex_update_bss_desc_with_ie() implicitly assumes that
the source descriptor entries contain the enough size for each type
and performs copying without checking the source size.  This may lead
to read over boundary.

Fix this by putting the source size check in appropriate places.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoDocumentation: Add section about CPU vulnerabilities for Spectre
Tim Chen [Thu, 20 Jun 2019 23:10:50 +0000 (16:10 -0700)]
Documentation: Add section about CPU vulnerabilities for Spectre

commit 6e88559470f581741bcd0f2794f9054814ac9740 upstream.

Add documentation for Spectre vulnerability and the mitigation mechanisms:

- Explain the problem and risks
- Document the mitigation mechanisms
- Document the command line controls
- Document the sysfs files

Co-developed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Co-developed-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agox86/tls: Fix possible spectre-v1 in do_get_thread_area()
Dianzhang Chen [Wed, 26 Jun 2019 04:50:30 +0000 (12:50 +0800)]
x86/tls: Fix possible spectre-v1 in do_get_thread_area()

commit 993773d11d45c90cb1c6481c2638c3d9f092ea5b upstream.

The index to access the threads tls array is controlled by userspace
via syscall: sys_ptrace(), hence leading to a potential exploitation
of the Spectre variant 1 vulnerability.

The index can be controlled from:
        ptrace -> arch_ptrace -> do_get_thread_area.

Fix this by sanitizing the user supplied index before using it to access
the p->thread.tls_array.

Signed-off-by: Dianzhang Chen <dianzhangchen0@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1561524630-3642-1-git-send-email-dianzhangchen0@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agox86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()
Dianzhang Chen [Tue, 25 Jun 2019 15:30:17 +0000 (23:30 +0800)]
x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()

commit 31a2fbb390fee4231281b939e1979e810f945415 upstream.

The index to access the threads ptrace_bps is controlled by userspace via
syscall: sys_ptrace(), hence leading to a potential exploitation of the
Spectre variant 1 vulnerability.

The index can be controlled from:
    ptrace -> arch_ptrace -> ptrace_get_debugreg.

Fix this by sanitizing the user supplied index before using it access
thread->ptrace_bps.

Signed-off-by: Dianzhang Chen <dianzhangchen0@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1561476617-3759-1-git-send-email-dianzhangchen0@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoblock, bfq: NULL out the bic when it's no longer valid
Douglas Anderson [Fri, 28 Jun 2019 04:44:09 +0000 (21:44 -0700)]
block, bfq: NULL out the bic when it's no longer valid

commit dbc3117d4ca9e17819ac73501e914b8422686750 upstream.

In reboot tests on several devices we were seeing a "use after free"
when slub_debug or KASAN was enabled.  The kernel complained about:

  Unable to handle kernel paging request at virtual address 6b6b6c2b

...which is a classic sign of use after free under slub_debug.  The
stack crawl in kgdb looked like:

 0  test_bit (addr=<optimized out>, nr=<optimized out>)
 1  bfq_bfqq_busy (bfqq=<optimized out>)
 2  bfq_select_queue (bfqd=<optimized out>)
 3  __bfq_dispatch_request (hctx=<optimized out>)
 4  bfq_dispatch_request (hctx=<optimized out>)
 5  0xc056ef00 in blk_mq_do_dispatch_sched (hctx=0xed249440)
 6  0xc056f728 in blk_mq_sched_dispatch_requests (hctx=0xed249440)
 7  0xc0568d24 in __blk_mq_run_hw_queue (hctx=0xed249440)
 8  0xc0568d94 in blk_mq_run_work_fn (work=<optimized out>)
 9  0xc024c5c4 in process_one_work (worker=0xec6d4640, work=0xed249480)
 10 0xc024cff4 in worker_thread (__worker=0xec6d4640)

Digging in kgdb, it could be found that, though bfqq looked fine,
bfqq->bic had been freed.

Through further digging, I postulated that perhaps it is illegal to
access a "bic" (AKA an "icq") after bfq_exit_icq() had been called
because the "bic" can be freed at some point in time after this call
is made.  I confirmed that there certainly were cases where the exact
crashing code path would access the "bic" after bfq_exit_icq() had
been called.  Sspecifically I set the "bfqq->bic" to (void *)0x7 and
saw that the bic was 0x7 at the time of the crash.

To understand a bit more about why this crash was fairly uncommon (I
saw it only once in a few hundred reboots), you can see that much of
the time bfq_exit_icq_fbqq() fully frees the bfqq and thus it can't
access the ->bic anymore.  The only case it doesn't is if
bfq_put_queue() sees a reference still held.

However, even in the case when bfqq isn't freed, the crash is still
rare.  Why?  I tracked what happened to the "bic" after the exit
routine.  It doesn't get freed right away.  Rather,
put_io_context_active() eventually called put_io_context() which
queued up freeing on a workqueue.  The freeing then actually happened
later than that through call_rcu().  Despite all these delays, some
extra debugging showed that all the hoops could be jumped through in
time and the memory could be freed causing the original crash.  Phew!

To make a long story short, assuming it truly is illegal to access an
icq after the "exit_icq" callback is finished, this patch is needed.

Cc: stable@vger.kernel.org
Reviewed-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoALSA: hda/realtek - Headphone Mic can't record after S3
Kailang Yang [Thu, 4 Jul 2019 08:02:10 +0000 (16:02 +0800)]
ALSA: hda/realtek - Headphone Mic can't record after S3

commit d07a9a4f66e944fcc900812cbc2f6817bde6a43d upstream.

Dell headset mode platform with ALC236.
It doesn't recording after system resume from S3.
S3 mode was deep. s2idle was not has this issue.
S3 deep will cut of codec power. So, the register will back to default
after resume back.
This patch will solve this issue.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agoudf: Fix incorrect final NOT_ALLOCATED (hole) extent length
Steven J. Magnani [Mon, 1 Jul 2019 02:39:35 +0000 (21:39 -0500)]
udf: Fix incorrect final NOT_ALLOCATED (hole) extent length

commit fa33cdbf3eceb0206a4f844fe91aeebcf6ff2b7a upstream.

In some cases, using the 'truncate' command to extend a UDF file results
in a mismatch between the length of the file's extents (specifically, due
to incorrect length of the final NOT_ALLOCATED extent) and the information
(file) length. The discrepancy can prevent other operating systems
(i.e., Windows 10) from opening the file.

Two particular errors have been observed when extending a file:

1. The final extent is larger than it should be, having been rounded up
   to a multiple of the block size.

B. The final extent is not shorter than it should be, due to not having
   been updated when the file's information length was increased.

[JK: simplified udf_do_extend_final_block(), fixed up some types]

Fixes: 2c948b3f86e5 ("udf: Avoid IO in udf_clear_inode")
CC: stable@vger.kernel.org
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Link: https://lore.kernel.org/r/1561948775-5878-1-git-send-email-steve@digidescorp.com
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agofscrypt: don't set policy for a dead directory
Hongjie Fang [Wed, 22 May 2019 02:02:53 +0000 (10:02 +0800)]
fscrypt: don't set policy for a dead directory

commit 5858bdad4d0d0fc18bf29f34c3ac836e0b59441f upstream.

The directory may have been removed when entering
fscrypt_ioctl_set_policy().  If so, the empty_dir() check will return
error for ext4 file system.

ext4_rmdir() sets i_size = 0, then ext4_empty_dir() reports an error
because 'inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2)'.  If
the fs is mounted with errors=panic, it will trigger a panic issue.

Add the check IS_DEADDIR() to fix this problem.

Fixes: 9bd8212f981e ("ext4 crypto: add encryption policy and password salt support")
Cc: <stable@vger.kernel.org> # v4.1+
Signed-off-by: Hongjie Fang <hongjiefang@asrmicro.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 years agonet :sunrpc :clnt :Fix xps refcount imbalance on the error path
Lin Yi [Mon, 10 Jun 2019 02:16:56 +0000 (10:16 +0800)]
net :sunrpc :clnt :Fix xps refcount imbalance on the error path

[ Upstream commit b96226148491505318228ac52624956bd98f9e0c ]

rpc_clnt_add_xprt take a reference to struct rpc_xprt_switch, but forget
to release it before return, may lead to a memory leak.

Signed-off-by: Lin Yi <teroincn@163.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: dsa: mv88e6xxx: fix shift of FID bits in mv88e6185_g1_vtu_loadpurge()
Rasmus Villemoes [Wed, 19 Jun 2019 10:02:13 +0000 (10:02 +0000)]
net: dsa: mv88e6xxx: fix shift of FID bits in mv88e6185_g1_vtu_loadpurge()

[ Upstream commit 48620e341659f6e4b978ec229f6944dabe6df709 ]

The comment is correct, but the code ends up moving the bits four
places too far, into the VTUOp field.

Fixes: 11ea809f1a74 (net: dsa: mv88e6xxx: support 256 databases)
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoquota: fix a problem about transfer quota
yangerkun [Tue, 26 Mar 2019 14:00:02 +0000 (22:00 +0800)]
quota: fix a problem about transfer quota

[ Upstream commit c6d9c35d16f1bafd3fec64b865e569e48cbcb514 ]

Run below script as root, dquot_add_space will return -EDQUOT since
__dquot_transfer call dquot_add_space with flags=0, and dquot_add_space
think it's a preallocation. Fix it by set flags as DQUOT_SPACE_WARN.

mkfs.ext4 -O quota,project /dev/vdb
mount -o prjquota /dev/vdb /mnt
setquota -P 23 1 1 0 0 /dev/vdb
dd if=/dev/zero of=/mnt/test-file bs=4K count=1
chattr -p 23 test-file

Fixes: 7b9ca4c61bc2 ("quota: Reduce contention on dq_data_lock")
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agonet: lio_core: fix potential sign-extension overflow on large shift
Colin Ian King [Mon, 17 Jun 2019 16:12:49 +0000 (17:12 +0100)]
net: lio_core: fix potential sign-extension overflow on large shift

[ Upstream commit 9476274093a0e79b905f4cd6cf6d149f65e02c17 ]

Left shifting the signed int value 1 by 31 bits has undefined behaviour
and the shift amount oq_no can be as much as 63.  Fix this by using
BIT_ULL(oq_no) instead.

Addresses-Coverity: ("Bad shift operation")
Fixes: f21fb3ed364b ("Add support of Cavium Liquidio ethernet adapters")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoip6_tunnel: allow not to count pkts on tstats by passing dev as NULL
Xin Long [Mon, 17 Jun 2019 13:34:14 +0000 (21:34 +0800)]
ip6_tunnel: allow not to count pkts on tstats by passing dev as NULL

[ Upstream commit 6f6a8622057c92408930c31698394fae1557b188 ]

A similar fix to Patch "ip_tunnel: allow not to count pkts on tstats by
setting skb's dev to NULL" is also needed by ip6_tunnel.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agodrm: return -EFAULT if copy_to_user() fails
Dan Carpenter [Tue, 18 Jun 2019 13:18:43 +0000 (16:18 +0300)]
drm: return -EFAULT if copy_to_user() fails

[ Upstream commit 74b67efa8d7b4f90137f0ab9a80dd319da050350 ]

The copy_from_user() function returns the number of bytes remaining
to be copied but we want to return a negative error code.  Otherwise
the callers treat it as a successful copy.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618131843.GA29463@mwanda
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agobnx2x: Check if transceiver implements DDM before access
Mauro S. M. Rodrigues [Thu, 13 Jun 2019 19:25:40 +0000 (16:25 -0300)]
bnx2x: Check if transceiver implements DDM before access

[ Upstream commit cf18cecca911c0db96b868072665347efe6df46f ]

Some transceivers may comply with SFF-8472 even though they do not
implement the Digital Diagnostic Monitoring (DDM) interface described in
the spec. The existence of such area is specified by the 6th bit of byte
92, set to 1 if implemented.

Currently, without checking this bit, bnx2x fails trying to read sfp
module's EEPROM with the follow message:

ethtool -m enP5p1s0f1
Cannot get Module EEPROM data: Input/output error

Because it fails to read the additional 256 bytes in which it is assumed
to exist the DDM data.

This issue was noticed using a Mellanox Passive DAC PN 01FT738. The EEPROM
data was confirmed by Mellanox as correct and similar to other Passive
DACs from other manufacturers.

Signed-off-by: Mauro S. M. Rodrigues <maurosr@linux.vnet.ibm.com>
Acked-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomd: fix for divide error in status_resync
Mariusz Tkaczyk [Thu, 13 Jun 2019 14:11:41 +0000 (16:11 +0200)]
md: fix for divide error in status_resync

[ Upstream commit 9642fa73d073527b0cbc337cc17a47d545d82cd2 ]

Stopping external metadata arrays during resync/recovery causes
retries, loop of interrupting and starting reconstruction, until it
hit at good moment to stop completely. While these retries
curr_mark_cnt can be small- especially on HDD drives, so subtraction
result can be smaller than 0. However it is casted to uint without
checking. As a result of it the status bar in /proc/mdstat while stopping
is strange (it jumps between 0% and 99%).

The real problem occurs here after commit 72deb455b5ec ("block: remove
CONFIG_LBDAF"). Sector_div() macro has been changed, now the
divisor is casted to uint32. For db = -8 the divisior(db/32-1) becomes 0.

Check if db value can be really counted and replace these macro by
div64_u64() inline.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoqmi_wwan: extend permitted QMAP mux_id value range
Reinhard Speyerer [Wed, 12 Jun 2019 17:03:50 +0000 (19:03 +0200)]
qmi_wwan: extend permitted QMAP mux_id value range

[ Upstream commit 36815b416fa48766ac5a98e4b2dc3ebc5887222e ]

Permit mux_id values up to 254 to be used in qmimux_register_device()
for compatibility with ip(8) and the rmnet driver.

Fixes: c6adf77953bc ("net: usb: qmi_wwan: add qmap mux protocol support")
Cc: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: Reinhard Speyerer <rspmn@arcor.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoqmi_wwan: avoid RCU stalls on device disconnect when in QMAP mode
Reinhard Speyerer [Wed, 12 Jun 2019 17:03:15 +0000 (19:03 +0200)]
qmi_wwan: avoid RCU stalls on device disconnect when in QMAP mode

[ Upstream commit a8fdde1cb830e560208af42b6c10750137f53eb3 ]

Switch qmimux_unregister_device() and qmi_wwan_disconnect() to
use unregister_netdevice_queue() and unregister_netdevice_many()
instead of unregister_netdevice(). This avoids RCU stalls which
have been observed on device disconnect in certain setups otherwise.

Fixes: c6adf77953bc ("net: usb: qmi_wwan: add qmap mux protocol support")
Cc: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: Reinhard Speyerer <rspmn@arcor.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoqmi_wwan: add support for QMAP padding in the RX path
Reinhard Speyerer [Wed, 12 Jun 2019 17:02:13 +0000 (19:02 +0200)]
qmi_wwan: add support for QMAP padding in the RX path

[ Upstream commit 61356088ace1866a847a727d4d40da7bf00b67fc ]

The QMAP code in the qmi_wwan driver is based on the CodeAurora GobiNet
driver which does not process QMAP padding in the RX path correctly.
Add support for QMAP padding to qmimux_rx_fixup() according to the
description of the rmnet driver.

Fixes: c6adf77953bc ("net: usb: qmi_wwan: add qmap mux protocol support")
Cc: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: Reinhard Speyerer <rspmn@arcor.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomac80211: only warn once on chanctx_conf being NULL
Yibo Zhao [Fri, 14 Jun 2019 11:01:52 +0000 (19:01 +0800)]
mac80211: only warn once on chanctx_conf being NULL

[ Upstream commit 563572340173865a9a356e6bb02579e6998a876d ]

In multiple SSID cases, it takes time to prepare every AP interface
to be ready in initializing phase. If a sta already knows everything it
needs to join one of the APs and sends authentication to the AP which
is not fully prepared at this point of time, AP's channel context
could be NULL. As a result, warning message occurs.

Even worse, if the AP is under attack via tools such as MDK3 and massive
authentication requests are received in a very short time, console will
be hung due to kernel warning messages.

WARN_ON_ONCE() could be a better way for indicating warning messages
without duplicate messages to flood the console.

Johannes: We still need to address the underlying problem, but we
          don't really have a good handle on it yet. Suppress the
          worst side-effects for now.

Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Yibo Zhao <yiboz@codeaurora.org>
[johannes: add note, change subject]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoARM: davinci: da8xx: specify dma_coherent_mask for lcdc
Bartosz Golaszewski [Fri, 7 Jun 2019 14:33:50 +0000 (16:33 +0200)]
ARM: davinci: da8xx: specify dma_coherent_mask for lcdc

[ Upstream commit 68f2515bb31a664ba3e2bc1eb78dd9f529b10067 ]

The lcdc device is missing the dma_coherent_mask definition causing the
following warning on da850-evm:

da8xx_lcdc da8xx_lcdc.0: found Sharp_LK043T1DG01 panel
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at kernel/dma/mapping.c:247 dma_alloc_attrs+0xc8/0x110
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 5.2.0-rc3-00077-g16d72dd4891f #18
Hardware name: DaVinci DA850/OMAP-L138/AM18x EVM
[<c000fce8>] (unwind_backtrace) from [<c000d900>] (show_stack+0x10/0x14)
[<c000d900>] (show_stack) from [<c001a4f8>] (__warn+0xec/0x114)
[<c001a4f8>] (__warn) from [<c001a634>] (warn_slowpath_null+0x3c/0x48)
[<c001a634>] (warn_slowpath_null) from [<c0065860>] (dma_alloc_attrs+0xc8/0x110)
[<c0065860>] (dma_alloc_attrs) from [<c02820f8>] (fb_probe+0x228/0x5a8)
[<c02820f8>] (fb_probe) from [<c02d3e9c>] (platform_drv_probe+0x48/0x9c)
[<c02d3e9c>] (platform_drv_probe) from [<c02d221c>] (really_probe+0x1d8/0x2d4)
[<c02d221c>] (really_probe) from [<c02d2474>] (driver_probe_device+0x5c/0x168)
[<c02d2474>] (driver_probe_device) from [<c02d2728>] (device_driver_attach+0x58/0x60)
[<c02d2728>] (device_driver_attach) from [<c02d27b0>] (__driver_attach+0x80/0xbc)
[<c02d27b0>] (__driver_attach) from [<c02d047c>] (bus_for_each_dev+0x64/0xb4)
[<c02d047c>] (bus_for_each_dev) from [<c02d1590>] (bus_add_driver+0xe4/0x1d8)
[<c02d1590>] (bus_add_driver) from [<c02d301c>] (driver_register+0x78/0x10c)
[<c02d301c>] (driver_register) from [<c000a5c0>] (do_one_initcall+0x48/0x1bc)
[<c000a5c0>] (do_one_initcall) from [<c05cae6c>] (kernel_init_freeable+0x10c/0x1d8)
[<c05cae6c>] (kernel_init_freeable) from [<c048a000>] (kernel_init+0x8/0xf4)
[<c048a000>] (kernel_init) from [<c00090e0>] (ret_from_fork+0x14/0x34)
Exception stack(0xc6837fb0 to 0xc6837ff8)
7fa0:                                     00000000 00000000 00000000 00000000
7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
---[ end trace 8a8073511be81dd2 ]---

Add a 32-bit mask to the platform device's definition.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoARM: davinci: da850-evm: call regulator_has_full_constraints()
Bartosz Golaszewski [Fri, 7 Jun 2019 09:02:01 +0000 (11:02 +0200)]
ARM: davinci: da850-evm: call regulator_has_full_constraints()

[ Upstream commit 0c0c9b5753cd04601b17de09da1ed2885a3b42fe ]

The BB expander at 0x21 i2c bus 1 fails to probe on da850-evm because
the board doesn't set has_full_constraints to true in the regulator
API.

Call regulator_has_full_constraints() at the end of board registration
just like we do in da850-lcdk and da830-evm.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agomlxsw: spectrum: Disallow prio-tagged packets when PVID is removed
Ido Schimmel [Tue, 11 Jun 2019 07:19:46 +0000 (10:19 +0300)]
mlxsw: spectrum: Disallow prio-tagged packets when PVID is removed

[ Upstream commit 4b14cc313f076c37b646cee06a85f0db59cf216c ]

When PVID is removed from a bridge port, the Linux bridge drops both
untagged and prio-tagged packets. Align mlxsw with this behavior.

Fixes: 148f472da5db ("mlxsw: reg: Add the Switch Port Acceptable Frame Types register")
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5 years agoKVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy
Dave Martin [Thu, 6 Jun 2019 10:58:07 +0000 (11:58 +0100)]
KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy

[ Upstream commit 4729ec8c1e1145234aeeebad5d96d77f4ccbb00a ]

kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but vgic_its_destroy() is not currently doing this,
resulting in a memory leak, resulting in kmemleak reports such as
the following:

unreferenced object 0xffff800aeddfe280 (size 128):
  comm "qemu-system-aar", pid 13799, jiffies 4299827317 (age 1569.844s)
  [...]
  backtrace:
    [<00000000a08b80e2>] kmem_cache_alloc+0x178/0x208
    [<00000000dcad2bd3>] kvm_vm_ioctl+0x350/0xbc0

Fix it.

Cc: Andre Przywara <andre.przywara@arm.com>
Fixes: 1085fdc68c60 ("KVM: arm64: vgic-its: Introduce new KVM ITS device")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>