GitHub/moto-9609/android_kernel_motorola_exynos9610.git
8 years agonfp: fix error return code in nfp_net_netdev_open()
Wei Yongjun [Thu, 15 Sep 2016 03:45:07 +0000 (03:45 +0000)]
nfp: fix error return code in nfp_net_netdev_open()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 73725d9dfd99 ("nfp: allocate ring SW structs dynamically")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: VRF: Pass original iif to ip_route_input()
Mark Tomlinson [Wed, 14 Sep 2016 23:40:05 +0000 (11:40 +1200)]
net: VRF: Pass original iif to ip_route_input()

The function ip_rcv_finish() calls l3mdev_ip_rcv(). On any VRF except
the global VRF, this replaces skb->dev with the VRF master interface.
When calling ip_route_input_noref() from here, the checks for forwarding
look at this master device instead of the initial ingress interface.
This will allow packets to be routed which normally would be dropped.
For example, an interface that is not assigned an IP address should
drop packets, but because the checking is against the master device, the
packet will be forwarded.

The fix here is to still call l3mdev_ip_rcv(), but remember the initial
net_device. This is passed to the other functions within ip_rcv_finish,
so they still see the original interface.

Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/ibm/emac: add mutex to 'set multicast list'
Ivan Mikhaylov [Wed, 14 Sep 2016 16:06:45 +0000 (19:06 +0300)]
net/ibm/emac: add mutex to 'set multicast list'

for preventing race conditions within ioctl calls.

Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/ibm/emac: add set mac addr callback
Ivan Mikhaylov [Wed, 14 Sep 2016 16:06:44 +0000 (19:06 +0300)]
net/ibm/emac: add set mac addr callback

add realization for mac address set and remove dummy callback.

Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: mediatek: fix module loading automatically based on MODULE_DEVICE_TABLE
Sean Wang [Wed, 14 Sep 2016 13:29:34 +0000 (21:29 +0800)]
net: ethernet: mediatek: fix module loading automatically based on MODULE_DEVICE_TABLE

The device table is required to load modules based on
modaliases. After adding MODULE_DEVICE_TABLE, below entries
for example will be added to modules.alias:
alias of:N*T*Cmediatek,mt7623-ethC* mtk_eth_soc

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'batadv-net-for-davem-20160914' of git://git.open-mesh.org/linux-merge
David S. Miller [Fri, 16 Sep 2016 08:17:33 +0000 (04:17 -0400)]
Merge tag 'batadv-net-for-davem-20160914' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
Here are two batman-adv bugfix patches:

 - Fix reference counting for last_bonding_candidate, by Sven Eckelmann

 - Fix head room reservation for ELP packets, by Linus Luessing
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: fix off by one in error handling
Sebastian Ott [Wed, 14 Sep 2016 11:09:24 +0000 (13:09 +0200)]
net/mlx4_en: fix off by one in error handling

If an error occurs in mlx4_init_eq_table the index used in the
err_out_unmap label is one too big which results in a panic in
mlx4_free_eq. This patch fixes the index in the error path.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'mac80211-for-davem-2016-09-13' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Fri, 16 Sep 2016 05:34:08 +0000 (01:34 -0400)]
Merge tag 'mac80211-for-davem-2016-09-13' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
A few more fixes:
 * better mesh path fixing, from Thomas
 * fix TIM IE recalculation after sending frames
   to a sleeping station, from Felix
 * fix sequence number assignment while sending
   frames to a sleeping station, also from Felix
 * validate number of probe response CSA counter
   offsets, fixing a copy/paste bug (from myself)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonl80211: validate number of probe response CSA counters
Johannes Berg [Tue, 13 Sep 2016 13:53:55 +0000 (15:53 +0200)]
nl80211: validate number of probe response CSA counters

Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.

Cc: stable@vger.kernel.org
Fixes: 9a774c78e211 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agodrivers: net: phy: xgene: Fix 'remove' function
Christophe Jaillet [Sun, 11 Sep 2016 19:43:34 +0000 (21:43 +0200)]
drivers: net: phy: xgene: Fix 'remove' function

If 'IS_ERR(pdata->clk)' is true, then 'clk_disable_unprepare(pdata->clk)'
will do nothing.

It is likely that 'if (!IS_ERR(pdata->clk))' was expected here.
In fact, the test can even be removed because 'clk_disable_unprepare'
already handles such cases.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp: hold the transport before using it in sctp_hash_cmp
Xin Long [Sat, 10 Sep 2016 15:11:23 +0000 (23:11 +0800)]
sctp: hold the transport before using it in sctp_hash_cmp

Since commit 4f0087812648 ("sctp: apply rhashtable api to send/recv
path"), sctp uses transport rhashtable with .obj_cmpfn sctp_hash_cmp,
in which it compares the members of the transport with the rhashtable
args to check if it's the right transport.

But sctp uses the transport without holding it in sctp_hash_cmp, it can
cause a use-after-free panic. As after it gets transport from hashtable,
another CPU may close the sk and free the asoc. In sctp_association_free,
it frees all the transports, meanwhile, the assoc's refcnt may be reduced
to 0, assoc can be destroyed by sctp_association_destroy.

So after that, transport->assoc is actually an unavailable memory address
in sctp_hash_cmp. Although sctp_hash_cmp is under rcu_read_lock, it still
can not avoid this, as assoc is not freed by RCU.

This patch is to hold the transport before checking it's members with
sctp_transport_hold, in which it checks the refcnt first, holds it if
it's not 0.

Fixes: 4f0087812648 ("sctp: apply rhashtable api to send/recv path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobnx2: Reset device during driver initialization
Baoquan He [Fri, 9 Sep 2016 14:43:12 +0000 (22:43 +0800)]
bnx2: Reset device during driver initialization

When system enters into kdump kernel because of kernel panic, it won't
shutdown devices. On-flight DMA will continue transferring data until
device driver initializes. All devices are supposed to reset during
driver initialization. And this property is used to fix the kdump
failure in system with intel iommu. Other systems with hardware iommu
should be similar. Please check commit 091d42e ("iommu/vt-d: Copy
translation tables from old kernel") and those commits around.

But bnx2 driver doesn't reset device during driver initialization. The
device resetting is deferred to net device up stage. This will cause
hardware iommu handling failure on bnx2 device. And its resetting relies
on firmware. So in this patch move the firmware requesting code to earlier
bnx2_init_one(), then next call bnx2_reset_chip to reset device.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Tue, 13 Sep 2016 15:17:24 +0000 (11:17 -0400)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are:

1) Endianess fix for the new nf_tables netlink trace infrastructure,
   NFTA_TRACE_POLICY endianess was not correct, patch from Liping Zhang.

2) Fix broken re-route after userspace queueing in nf_tables route
   chain. This patch is large but it is simple since it is just getting
   this code in sync with iptable_mangle. Also from Liping.

3) NAT mangling via ctnetlink lies to userspace when nf_nat_setup_info()
   fails to setup the NAT conntrack extension. This problem has been
   there since the beginning, but it can now show up after rhashtable
   conversion.

4) Fix possible NULL pointer dereference due to failures in allocating
   the synproxy and seqadj conntrack extensions, from Gao feng.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonetfilter: synproxy: Check oom when adding synproxy and seqadj ct extensions
Gao Feng [Tue, 13 Sep 2016 00:49:18 +0000 (08:49 +0800)]
netfilter: synproxy: Check oom when adding synproxy and seqadj ct extensions

When memory is exhausted, nfct_seqadj_ext_add may fail to add the
synproxy and seqadj extensions. The function nf_ct_seqadj_init doesn't
check if get valid seqadj pointer by the nfct_seqadj.

Now drop the packet directly when fail to add seqadj extension to
avoid dereference NULL pointer in nf_ct_seqadj_init from
init_conntrack().

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: nf_nat: handle NF_DROP from nfnetlink_parse_nat_setup()
Pablo Neira Ayuso [Fri, 9 Sep 2016 13:38:12 +0000 (15:38 +0200)]
netfilter: nf_nat: handle NF_DROP from nfnetlink_parse_nat_setup()

nf_nat_setup_info() returns NF_* verdicts, so convert them to error
codes that is what ctnelink expects. This has passed overlook without
having any impact since this nf_nat_setup_info() has always returned
NF_ACCEPT so far. Since 870190a9ec90 ("netfilter: nat: convert nat bysrc
hash to rhashtable"), this is problem.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 12 Sep 2016 14:56:06 +0000 (07:56 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "Mostly small sets of driver fixes scattered all over the place.

   1) Mediatek driver fixes from Sean Wang.  Forward port not written
      correctly during TX map, missed handling of EPROBE_DEFER, and
      mistaken use of put_page() instead of skb_free_frag().

   2) Fix socket double-free in KCM code, from WANG Cong.

   3) QED driver fixes from Sudarsana Reddy Kalluru, including a fix for
      using the dcbx buffers before initializing them.

   4) Mellanox Switch driver fixes from Jiri Pirko, including a fix for
      double fib removals and an error handling fix in
      mlxsw_sp_module_init().

   5) Fix kernel panic when enabling LLDP in i40e driver, from Dave
      Ertman.

   6) Fix padding of TSO packets in thunderx driver, from Sunil Goutham.

   7) TCP's rcv_wup not initialized properly when using fastopen, from
      Neal Cardwell.

   8) Don't use uninitialized flow keys in flow dissector, from Gao
      Feng.

   9) Use after free in l2tp module unload, from Sabrina Dubroca.

  10) Fix interrupt registry ordering issues in smsc911x driver, from
      Jeremy Linton.

  11) Fix crashes in bonding having to do with enslaving and rx_handler,
      from Mahesh Bandewar.

  12) AF_UNIX deadlock fixes from Linus.

  13) In mlx5 driver, don't read skb->xmit_mode after it might have been
      freed from the TX reclaim path.  From Tariq Toukan.

  14) Fix a bug from 2015 in TCP Yeah where the congestion window does
      not increase, from Artem Germanov.

  15) Don't pad frames on receive in NFP driver, from Jakub Kicinski.

  16) Fix chunk fragmenting in SCTP wrt. GSO, from Marcelo Ricardo
      Leitner.

  17) Fix deletion of VRF routes, from Mark Tomlinson.

  18) Fix device refcount leak when DAD fails in ipv6, from Wei Yongjun"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (101 commits)
  net/mlx4_en: Fix panic on xmit while port is down
  net/mlx4_en: Fixes for DCBX
  net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_state()
  net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all()
  net: ethernet: renesas: sh_eth: add POST registers for rz
  drivers: net: phy: mdio-xgene: Add hardware dependency
  dwc_eth_qos: do not register semi-initialized device
  sctp: identify chunks that need to be fragmented at IP level
  mlxsw: spectrum: Set port type before setting its address
  mlxsw: spectrum_router: Fix error path in mlxsw_sp_router_init
  nfp: don't pad frames on receive
  nfp: drop support for old firmware ABIs
  nfp: remove linux/version.h includes
  tcp: cwnd does not increase in TCP YeAH
  net/mlx5e: Fix parsing of vlan packets when updating lro header
  net/mlx5e: Fix global PFC counters replication
  net/mlx5e: Prevent casting overflow
  net/mlx5e: Move an_disable_cap bit to a new position
  net/mlx5e: Fix xmit_more counter race issue
  tcp: fastopen: avoid negative sk_forward_alloc
  ...

8 years agomac80211: make mpath path fixing more robust
Pedersen, Thomas [Tue, 6 Sep 2016 18:59:00 +0000 (11:59 -0700)]
mac80211: make mpath path fixing more robust

A fixed mpath was not quite being treated as such:

1) if a PERR frame was received, a fixed mpath was
   deactivated.

2) queued path discovery for fixed mpath was potentially
   being considered, changing mpath state.

3) other mpath flags were potentially being inherited when
   fixing the mpath. Just assign PATH_FIXED and SN_VALID.

This solves several issues when fixing a mesh path in one
direction. The reverse direction mpath should probably
also be fixed, or root announcements at least be enabled.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix sequence number assignment for PS response frames
Felix Fietkau [Sun, 4 Sep 2016 16:00:59 +0000 (18:00 +0200)]
mac80211: fix sequence number assignment for PS response frames

When using intermediate queues, sequence number allocation is deferred
until dequeue. This doesn't work for PS response frames, which bypass
those queues.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix tim recalculation after PS response
Felix Fietkau [Sun, 28 Aug 2016 11:10:37 +0000 (13:10 +0200)]
mac80211: fix tim recalculation after PS response

Handle the case where the mac80211 intermediate queues are empty and the
driver has buffered frames

Fixes: ba8c3d6f16a1 ("mac80211: add an intermediate software queue implementation")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agoLinux 4.8-rc6
Linus Torvalds [Mon, 12 Sep 2016 03:02:25 +0000 (20:02 -0700)]
Linux 4.8-rc6

8 years agoMerge branch 'mlx4-fixes'
David S. Miller [Mon, 12 Sep 2016 02:40:26 +0000 (19:40 -0700)]
Merge branch 'mlx4-fixes'

Tariq Toukan says:

====================
mlx4 fixes

This patchset contains several bug fixes from the team to the
mlx4 Eth driver.

Series generated against net commit:
c2f57fb97da5 "drivers: net: phy: mdio-xgene: Add hardware dependency"

v2:
* excluded some cleanup patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Fix panic on xmit while port is down
Moshe Shemesh [Sun, 11 Sep 2016 07:56:20 +0000 (10:56 +0300)]
net/mlx4_en: Fix panic on xmit while port is down

When port is down, tx drop counter update is not needed.
Updating the counter in this case can cause a kernel
panic as when the port is down, ring can be NULL.

Fixes: 63a664b7e92b ("net/mlx4_en: fix tx_dropped bug")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Fixes for DCBX
Tariq Toukan [Sun, 11 Sep 2016 07:56:19 +0000 (10:56 +0300)]
net/mlx4_en: Fixes for DCBX

This patch adds a capability check before enabling DCBX.
In addition, it re-organizes the relevant data structures,
and fixes a typo in a define.

Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_state()
Kamal Heib [Sun, 11 Sep 2016 07:56:18 +0000 (10:56 +0300)]
net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_state()

mlx4_en_dcbnl_set_state() returns u8, the return value from
mlx4_en_setup_tc() could be negative in case of failure, so fix that.

Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all()
Kamal Heib [Sun, 11 Sep 2016 07:56:17 +0000 (10:56 +0300)]
net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all()

mlx4_en_dcbnl_set_all() returns u8, so return value can't be negative in
case of failure.

Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Rana Shahout <ranas@mellanox.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonvme: make NVME_RDMA depend on BLOCK
Linus Torvalds [Sun, 11 Sep 2016 21:41:49 +0000 (14:41 -0700)]
nvme: make NVME_RDMA depend on BLOCK

Commit aa71987472a9 ("nvme: fabrics drivers don't need the nvme-pci
driver") removed the dependency on BLK_DEV_NVME, but the cdoe does
depend on the block layer (which used to be an implicit dependency
through BLK_DEV_NVME).

Otherwise you get various errors from the kbuild test robot random
config testing when that happens to hit a configuration with BLOCK
device support disabled.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Jay Freyensee <james_p_freyensee@linux.intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge tag 'staging-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 11 Sep 2016 21:23:48 +0000 (14:23 -0700)]
Merge tag 'staging-4.8-rc6' of git://git./linux/kernel/git/gregkh/staging

Pull IIO fixes from Greg KH:
 "Here are a few small IIO fixes for 4.8-rc6.

  Nothing major, full details are in the shortlog, all of these have
  been in linux-next with no reported issues"

* tag 'staging-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio:core: fix IIO_VAL_FRACTIONAL sign handling
  iio: ensure ret is initialized to zero before entering do loop
  iio: accel: kxsd9: Fix scaling bug
  iio: accel: bmc150: reset chip at init time
  iio: fix pressure data output unit in hid-sensor-attributes
  tools:iio:iio_generic_buffer: fix trigger-less mode

8 years agoMerge tag 'usb-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 11 Sep 2016 21:10:29 +0000 (14:10 -0700)]
Merge tag 'usb-4.8-rc6' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB gadget, phy, and xhci fixes for 4.8-rc6.

  All of these resolve minor issues that have been reported, and all
  have been in linux-next with no reported issues"

* tag 'usb-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
  xhci: fix null pointer dereference in stop command timeout function
  usb: dwc3: pci: fix build warning on !PM_SLEEP
  usb: gadget: prevent potenial null pointer dereference on skb->len
  usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition
  usb: phy: phy-generic: Check clk_prepare_enable() error
  usb: gadget: udc: renesas-usb3: clear VBOUT bit in DRD_CON
  Revert "usb: dwc3: gadget: always decrement by 1"

8 years agonet: ethernet: renesas: sh_eth: add POST registers for rz
Chris Brandt [Wed, 7 Sep 2016 18:57:09 +0000 (14:57 -0400)]
net: ethernet: renesas: sh_eth: add POST registers for rz

Due to a mistake in the hardware manual, the FWSLC and POST1-4 registers
were not documented and left out of the driver for RZ/A making the CAM
feature non-operational.
Additionally, when the offset values for POST1-4 are left blank, the driver
attempts to set them using an offset of 0xFFFF which can cause a memory
corruption or panic.

This patch fixes the panic and properly enables CAM.

Reported-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sat, 10 Sep 2016 16:58:52 +0000 (09:58 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "nvdimm fixes for v4.8, two of them are tagged for -stable:

   - Fix devm_memremap_pages() to use track_pfn_insert().  Otherwise,
     DAX pmd mappings end up with an uncached pgprot, and unusable
     performance for the device-dax interface.  The device-dax interface
     appeared in 4.7 so this is tagged for -stable.

   - Fix a couple VM_BUG_ON() checks in the show_smaps() path to
     understand DAX pmd entries.  This fix is tagged for -stable.

   - Fix a mis-merge of the nfit machine-check handler to flip the
     polarity of an if() to match the final version of the patch that
     Vishal sent for 4.8-rc1.  Without this the nfit machine check
     handler never detects / inserts new 'badblocks' entries which
     applications use to identify lost portions of files.

   - For test purposes, fix the nvdimm_clear_poison() path to operate on
     legacy / simulated nvdimm memory ranges.  Without this fix a test
     can set badblocks, but never clear them on these ranges.

   - Fix the range checking done by dax_dev_pmd_fault().  This is not
     tagged for -stable since this problem is mitigated by specifying
     aligned resources at device-dax setup time.

  These patches have appeared in a next release over the past week.  The
  recent rebase you can see in the timestamps was to drop an invalid fix
  as identified by the updated device-dax unit tests [1].  The -mm
  touches have an ack from Andrew"

[1]: "[ndctl PATCH 0/3] device-dax test for recent kernel bugs"
   https://lists.01.org/pipermail/linux-nvdimm/2016-September/006855.html

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm: allow legacy (e820) pmem region to clear bad blocks
  nfit, mce: Fix SPA matching logic in MCE handler
  mm: fix cache mode of dax pmd mappings
  mm: fix show_smap() for zone_device-pmd ranges
  dax: fix mapping size check

8 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 10 Sep 2016 16:43:10 +0000 (09:43 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Mostly driver bugfixes, but also a few cleanups which are nice to have
  out of the way"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rk3x: Restore clock settings at resume time
  i2c: Spelling s/acknowedge/acknowledge/
  i2c: designware: save the preset value of DW_IC_SDA_HOLD
  Documentation: i2c: slave-interface: add note for driver development
  i2c: mux: demux-pinctrl: run properly with multiple instances
  i2c: bcm-kona: fix inconsistent indenting
  i2c: rcar: use proper device with dma_mapping_error
  i2c: sh_mobile: use proper device with dma_mapping_error
  i2c: mux: demux-pinctrl: invalidate properly when switching fails

8 years agoMerge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Sat, 10 Sep 2016 16:18:33 +0000 (09:18 -0700)]
Merge tag 'for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Pull fscrypto fixes fromTed Ts'o:
 "Fix some brown-paper-bag bugs for fscrypto, including one one which
  allows a malicious user to set an encryption policy on an empty
  directory which they do not own"

* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  fscrypto: require write access to mount to set encryption policy
  fscrypto: only allow setting encryption policy on directories
  fscrypto: add authorization check for setting encryption policy

8 years agofscrypto: require write access to mount to set encryption policy
Eric Biggers [Thu, 8 Sep 2016 21:20:38 +0000 (14:20 -0700)]
fscrypto: require write access to mount to set encryption policy

Since setting an encryption policy requires writing metadata to the
filesystem, it should be guarded by mnt_want_write/mnt_drop_write.
Otherwise, a user could cause a write to a frozen or readonly
filesystem.  This was handled correctly by f2fs but not by ext4.  Make
fscrypt_process_policy() handle it rather than relying on the filesystem
to get it right.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
8 years agofscrypto: only allow setting encryption policy on directories
Eric Biggers [Thu, 8 Sep 2016 18:36:39 +0000 (11:36 -0700)]
fscrypto: only allow setting encryption policy on directories

The FS_IOC_SET_ENCRYPTION_POLICY ioctl allowed setting an encryption
policy on nondirectory files.  This was unintentional, and in the case
of nonempty regular files did not behave as expected because existing
data was not actually encrypted by the ioctl.

In the case of ext4, the user could also trigger filesystem errors in
->empty_dir(), e.g. due to mismatched "directory" checksums when the
kernel incorrectly tried to interpret a regular file as a directory.

This bug affected ext4 with kernels v4.8-rc1 or later and f2fs with
kernels v4.6 and later.  It appears that older kernels only permitted
directories and that the check was accidentally lost during the
refactoring to share the file encryption code between ext4 and f2fs.

This patch restores the !S_ISDIR() check that was present in older
kernels.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
8 years agofscrypto: add authorization check for setting encryption policy
Eric Biggers [Thu, 8 Sep 2016 17:57:08 +0000 (10:57 -0700)]
fscrypto: add authorization check for setting encryption policy

On an ext4 or f2fs filesystem with file encryption supported, a user
could set an encryption policy on any empty directory(*) to which they
had readonly access.  This is obviously problematic, since such a
directory might be owned by another user and the new encryption policy
would prevent that other user from creating files in their own directory
(for example).

Fix this by requiring inode_owner_or_capable() permission to set an
encryption policy.  This means that either the caller must own the file,
or the caller must have the capability CAP_FOWNER.

(*) Or also on any regular file, for f2fs v4.6 and later and ext4
    v4.8-rc1 and later; a separate bug fix is coming for that.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
8 years agodrivers: net: phy: mdio-xgene: Add hardware dependency
Jean Delvare [Thu, 8 Sep 2016 14:25:15 +0000 (16:25 +0200)]
drivers: net: phy: mdio-xgene: Add hardware dependency

The mdio-xgene driver is only useful on X-Gene SoC.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Iyappan Subramanian <isubramanian@apm.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'wireless-drivers-for-davem-2016-09-08' of git://git.kernel.org/pub/scm...
David S. Miller [Sat, 10 Sep 2016 02:21:07 +0000 (19:21 -0700)]
Merge tag 'wireless-drivers-for-davem-2016-09-08' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.8

iwlwifi

* fix P2P dump trigger
* prevent a potential null dereference in iwlmvm
* prevent an uninitialized value from being returned in iwlmvm
* advertise support for channel width change in AP mode

ath10k

* fix racy rx status retrieval from htt context
* QCA9887 support is not experimental anymore, remove the warning message

ath9k

* fix regression with led GPIOs
* fix AR5416 GPIO access warning

brcmfmac

* avoid potential stack overflow in brcmf_cfg80211_start_ap()
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodwc_eth_qos: do not register semi-initialized device
Lars Persson [Thu, 8 Sep 2016 11:24:21 +0000 (13:24 +0200)]
dwc_eth_qos: do not register semi-initialized device

We move register_netdev() to the end of dwceqos_probe() to close any
races where the netdev callbacks are called before the initialization
has finished.

Reported-by: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosctp: identify chunks that need to be fragmented at IP level
Marcelo Ricardo Leitner [Thu, 8 Sep 2016 09:54:11 +0000 (17:54 +0800)]
sctp: identify chunks that need to be fragmented at IP level

Previously, without GSO, it was easy to identify it: if the chunk didn't
fit and there was no data chunk in the packet yet, we could fragment at
IP level. So if there was an auth chunk and we were bundling a big data
chunk, it would fragment regardless of the size of the auth chunk. This
also works for the context of PMTU reductions.

But with GSO, we cannot distinguish such PMTU events anymore, as the
packet is allowed to exceed PMTU.

So we need another check: to ensure that the chunk that we are adding,
actually fits the current PMTU. If it doesn't, trigger a flush and let
it be fragmented at IP level in the next round.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agolibnvdimm: allow legacy (e820) pmem region to clear bad blocks
Dave Jiang [Fri, 9 Sep 2016 16:10:08 +0000 (09:10 -0700)]
libnvdimm: allow legacy (e820) pmem region to clear bad blocks

Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation
where legacy pmem is being used or a pmem region created by using memmap
kernel parameter, the injected bad blocks are not cleared due to
nvdimm_clear_poison() failing from lack of ndctl function pointer. In
this case we need to just return as handled and allow the bad blocks to
be cleared rather than fail.

Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
8 years agonfit, mce: Fix SPA matching logic in MCE handler
Vishal Verma [Fri, 2 Sep 2016 23:27:30 +0000 (17:27 -0600)]
nfit, mce: Fix SPA matching logic in MCE handler

The check for a 'pmem' type SPA in the MCE handler was inverted due to a
merge/rebase error.

Fixes: 6839a6d nfit: do an ARS scrub on hitting a latent media error
Cc: linux-acpi@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
8 years agomm: fix cache mode of dax pmd mappings
Dan Williams [Wed, 7 Sep 2016 15:51:21 +0000 (08:51 -0700)]
mm: fix cache mode of dax pmd mappings

track_pfn_insert() in vmf_insert_pfn_pmd() is marking dax mappings as
uncacheable rendering them impractical for application usage.  DAX-pte
mappings are cached and the goal of establishing DAX-pmd mappings is to
attain more performance, not dramatically less (3 orders of magnitude).

track_pfn_insert() relies on a previous call to reserve_memtype() to
establish the expected page_cache_mode for the range.  While memremap()
arranges for reserve_memtype() to be called, devm_memremap_pages() does
not.  So, teach track_pfn_insert() and untrack_pfn() how to handle
tracking without a vma, and arrange for devm_memremap_pages() to
establish the write-back-cache reservation in the memtype tree.

Cc: <stable@vger.kernel.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Nilesh Choudhury <nilesh.choudhury@oracle.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Toshi Kani <toshi.kani@hpe.com>
Reported-by: Kai Zhang <kai.ka.zhang@oracle.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
8 years agomm: fix show_smap() for zone_device-pmd ranges
Dan Williams [Sat, 3 Sep 2016 17:38:03 +0000 (10:38 -0700)]
mm: fix show_smap() for zone_device-pmd ranges

Attempting to dump /proc/<pid>/smaps for a process with pmd dax mappings
currently results in the following VM_BUG_ONs:

 kernel BUG at mm/huge_memory.c:1105!
 task: ffff88045f16b140 task.stack: ffff88045be14000
 RIP: 0010:[<ffffffff81268f9b>]  [<ffffffff81268f9b>] follow_trans_huge_pmd+0x2cb/0x340
 [..]
 Call Trace:
  [<ffffffff81306030>] smaps_pte_range+0xa0/0x4b0
  [<ffffffff814c2755>] ? vsnprintf+0x255/0x4c0
  [<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
  [<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
  [<ffffffff81307656>] show_smap+0xa6/0x2b0

 kernel BUG at fs/proc/task_mmu.c:585!
 RIP: 0010:[<ffffffff81306469>]  [<ffffffff81306469>] smaps_pte_range+0x499/0x4b0
 Call Trace:
  [<ffffffff814c2795>] ? vsnprintf+0x255/0x4c0
  [<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
  [<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
  [<ffffffff81307696>] show_smap+0xa6/0x2b0

These locations are sanity checking page flags that must be set for an
anonymous transparent huge page, but are not set for the zone_device
pages associated with dax mappings.

Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
8 years agoMerge branch 'mlxsw-fixes'
David S. Miller [Fri, 9 Sep 2016 23:56:54 +0000 (16:56 -0700)]
Merge branch 'mlxsw-fixes'

Jiri Pirko says:

====================
mlxsw: couple of fixes

Couple of fixes from Ido and myself.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Set port type before setting its address
Ido Schimmel [Thu, 8 Sep 2016 06:16:02 +0000 (08:16 +0200)]
mlxsw: spectrum: Set port type before setting its address

During port init, we currently set the port's type to Ethernet after
setting its MAC address. However, the hardware documentation states this
should be the other way around.

Align the driver with the hardware documentation and set the port's MAC
address after setting its type.

Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum_router: Fix error path in mlxsw_sp_router_init
Jiri Pirko [Thu, 8 Sep 2016 06:16:01 +0000 (08:16 +0200)]
mlxsw: spectrum_router: Fix error path in mlxsw_sp_router_init

When neigh_init fails, we have to do proper cleanup including
router_fini call.

Fixes: 6cf3c971dc84cb ("mlxsw: spectrum_router: Add private neigh table")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 9 Sep 2016 21:52:05 +0000 (14:52 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "This includes a couple of bugfixs for virtio.

  The virtio console patch is actually also in x86/tip targeting 4.9
  because it helps vmap stacks, but it also fixes IOMMU_PLATFORM which
  was added in 4.8, and it seems important not to ship that in a broken
  configuration"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_console: Stop doing DMA on the stack
  virtio: mark vring_dma_dev() static

8 years agoMerge tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 9 Sep 2016 21:47:41 +0000 (14:47 -0700)]
Merge tag 'pm-4.8-rc6' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "This includes a PM QoS framework fix from Tejun to prevent interrupts
  from being enabled unexpectedly during early boot and a cpufreq
  documentation fix.

  Specifics:

   - If the PM QoS framework invokes cancel_delayed_work_sync() during
     early boot, it will enable interrupts which is not expected at that
     point, so prevent it from happening (Tejun Heo)

   - Fix cpufreq statistic documentation to follow a recent change in
     behavior that forgot to update it as appropriate (Jean Delvare)"

* tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq-stats: Minor documentation fix
  PM / QoS: avoid calling cancel_delayed_work_sync() during early boot

8 years agoMerge branches 'pm-core-fixes' and 'pm-cpufreq-fixes'
Rafael J. Wysocki [Fri, 9 Sep 2016 20:34:16 +0000 (22:34 +0200)]
Merge branches 'pm-core-fixes' and 'pm-cpufreq-fixes'

* pm-core-fixes:
  PM / QoS: avoid calling cancel_delayed_work_sync() during early boot

* pm-cpufreq-fixes:
  cpufreq-stats: Minor documentation fix

8 years agoMerge tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
Linus Torvalds [Fri, 9 Sep 2016 20:09:50 +0000 (13:09 -0700)]
Merge tag 'gpio-v4.8-3' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some GPIO fixes that have been boiling the last two weeks or so.
  Nothing special, I'm trying to sort out some Kconfig business and
  Russell needs a fix in for -his SA1100 rework.

  Summary:

   - Revert a pointless attempt to add an include to solve the UM allyes
     compilation problem.

   - Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
     compile properly without it.

   - Fix a probing problem for ucb1x00"

* tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: sa1100: fix irq probing for ucb1x00
  gpio: mcp23s08: make driver depend on OF_GPIO
  Revert "gpio: include <linux/io-mapping.h> in gpiolib-of"

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Fri, 9 Sep 2016 20:00:41 +0000 (13:00 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse fix from Miklos Szeredi:
 "This fixes a deadlock when fuse, direct I/O and loop device are
  combined"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: direct-io: don't dirty ITER_BVEC pages

8 years agoMerge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
Linus Torvalds [Fri, 9 Sep 2016 19:56:28 +0000 (12:56 -0700)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs fix from Miklos Szeredi:
 "This fixes a regression caused by the last pull request"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fix workdir creation

8 years agoMerge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
Linus Torvalds [Fri, 9 Sep 2016 19:52:31 +0000 (12:52 -0700)]
Merge branch 'for-linus-4.8' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "I'm not proud of how long it took me to track down that one liner in
  btrfs_sync_log(), but the good news is the patches I was trying to
  blame for these problems were actually fine (sorry Filipe)"

* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress
  btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns
  btrfs: do not decrease bytes_may_use when replaying extents

8 years agoMerge tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 9 Sep 2016 19:02:46 +0000 (12:02 -0700)]
Merge tag 'sound-4.8-rc6' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "We've got quite a few fixes at this time, and all are stable patches.

  syzkaller strikes back again (episode 19 or so), and we had to plug
  some holes in ALSA core part (mostly timer).

  In addition, a couple of FireWire audio fixes for the invalid copy
  user calls in locks, and a few quirks for HD-audio and USB-audio as
  usual are included"

* tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: rawmidi: Fix possible deadlock with virmidi registration
  ALSA: timer: Fix zero-division by continue of uninitialized instance
  ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
  ALSA: fireworks: accessing to user space outside spinlock
  ALSA: firewire-tascam: accessing to user space outside spinlock
  ALSA: hda - Enable subwoofer on Dell Inspiron 7559
  ALSA: hda - Add headset mic quirk for Dell Inspiron 5468
  ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114
  ALSA: timer: fix NULL pointer dereference on memory allocation failure
  ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE

8 years agovirtio_console: Stop doing DMA on the stack
Andy Lutomirski [Tue, 30 Aug 2016 15:04:15 +0000 (08:04 -0700)]
virtio_console: Stop doing DMA on the stack

virtio_console uses a small DMA buffer for control requests.  Move
that buffer into heap memory.

Doing virtio DMA on the stack is normally okay on non-DMA-API virtio
systems (which is currently most of them), but it breaks completely
if the stack is virtually mapped.

Tested by typing both directions using picocom aimed at /dev/hvc0.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
8 years agovirtio: mark vring_dma_dev() static
Baoyou Xie [Thu, 1 Sep 2016 11:02:57 +0000 (19:02 +0800)]
virtio: mark vring_dma_dev() static

We get 1 warning when building kernel with W=1:
drivers/virtio/virtio_ring.c:170:16: warning: no previous prototype for 'vring_dma_dev' [-Wmissing-prototypes]

In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
so this patch marks this function with 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
8 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 9 Sep 2016 17:54:29 +0000 (10:54 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - smp_mb__before_spinlock() changed to smp_mb() on arm64 since the
   generic definition to smp_wmb() is not sufficient

 - avoid a recursive loop with the graph tracer by using using
   preempt_(enable|disable)_notrace in _percpu_(read|write)

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: use preempt_disable_notrace in _percpu_read/write
  arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()

8 years agoMerge tag 'powerpc-4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 9 Sep 2016 15:43:42 +0000 (08:43 -0700)]
Merge tag 'powerpc-4.8-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes marked for stable:
   - Don't alias user region to other regions below PAGE_OFFSET from
     Paul Mackerras
   - Fix again csum_partial_copy_generic() on 32-bit from Christophe
     Leroy
   - Fix corrupted PE allocation bitmap on releasing PE from Gavin Shan

  Fixes for code merged this cycle:
   - Fix crash on releasing compound PE from Gavin Shan
   - Fix processor numbers in OPAL ICP from Benjamin Herrenschmidt
   - Fix little endian build with CONFIG_KEXEC=n from Thiago Jung
     Bauermann"

* tag 'powerpc-4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
  powerpc/32: Fix again csum_partial_copy_generic()
  powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE
  powerpc/powernv: Fix crash on releasing compound PE
  powerpc/xics/opal: Fix processor numbers in OPAL ICP
  powerpc/pseries: Fix little endian build with CONFIG_KEXEC=n

8 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Fri, 9 Sep 2016 15:32:10 +0000 (08:32 -0700)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "A few ARM fixes:

   - Robin Murphy noticed that the non-secure privileged entry was
     relying on undefined behaviour, which needed to be fixed.

   - Vladimir Murzin noticed that prov-v7 fails to build for MMUless
     configurations because a required header file wasn't included.

   - A bunch of fixes for StrongARM regressions found while testing
     4.8-rc on such platforms"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: sa1100: clear reset status prior to reboot
  ARM: 8600/1: Enforce some NS-SVC initialisation
  ARM: 8599/1: mm: pull asm/memory.h explicitly
  ARM: sa1100: register clocks early
  ARM: sa1100: fix 3.6864MHz clock

8 years agoMerge tag 'fixes-for-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi...
Greg Kroah-Hartman [Fri, 9 Sep 2016 13:11:35 +0000 (15:11 +0200)]
Merge tag 'fixes-for-v4.8-rc6' of git://git./linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.8-rc6

Unfortunately we have a bogus dwc3 patch leaked through the cracks and
got merged into Linus' HEAD. That patch ended up causing off-by-1 error
in our TRB accounting logic. Thankfully John Youn found out the problem
and we provided a revert to the bogus dwc3 patch in no time.

Apart from this off-by-1 error, we have two fixes to the Renesas drivers,
a small fix to our generic phy driver, a NULL pointer dereference fix for
f_eem and a build warning fix in dwc3.

8 years agoMerge tag 'usb-ci-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/peter...
Greg Kroah-Hartman [Fri, 9 Sep 2016 11:47:20 +0000 (13:47 +0200)]
Merge tag 'usb-ci-v4.8-rc6' of git://git./linux/kernel/git/peter.chen/usb into usb-linus

Peter writes:

Fix the possible kernel panic when the hardware signal is bad for chipidea udc.

8 years agoMerge tag 'iio-fixes-for-4.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...
Greg Kroah-Hartman [Fri, 9 Sep 2016 11:44:37 +0000 (13:44 +0200)]
Merge tag 'iio-fixes-for-4.8b' of git://git./linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Second set of IIO fixes for the 4.8 cycle.

We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
  - a fix for a fix in the last set.  The recent fix for blocking ops when
   ! task running left a path (unlikely one) in which the function return
   value was not set - so initialise it to 0.
  - The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
  fractions.  Turned out a fix for this was in Analog's tree but hadn't made
  it upstream.
* bmc150
  - reset chip at init time. At least one board out there ends up coming up
  in an unstable state due to noise during power up.  The reset does no
  harm on other boards.
* kxsd9
  - Fix a bug in the reported scaling due to failing to set the integer
  part to 0.
* hid-sensors-pressure
  - Output was in the wrong units to comply with the IIO ABI.
* tools
  - iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
    out for having no trigger when we explicitly said we didn't want to have
    one.

8 years agoarm64: use preempt_disable_notrace in _percpu_read/write
Chunyan Zhang [Thu, 8 Sep 2016 12:46:42 +0000 (20:46 +0800)]
arm64: use preempt_disable_notrace in _percpu_read/write

When debug preempt or preempt tracer is enabled, preempt_count_add/sub()
can be traced by function and function graph tracing, and
preempt_disable/enable() would call preempt_count_add/sub(), so in Ftrace
subsystem we should use preempt_disable/enable_notrace instead.

In the commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap
like events do") the function this_cpu_read() was added to
trace_graph_entry(), and if this_cpu_read() calls preempt_disable(), graph
tracer will go into a recursive loop, even if the tracing_on is
disabled.

So this patch change to use preempt_enable/disable_notrace instead in
this_cpu_read().

Since Yonghui Yang helped a lot to find the root cause of this problem,
so also add his SOB.

Signed-off-by: Yonghui Yang <mark.yang@spreadtrum.com>
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
8 years agoarm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
Will Deacon [Mon, 5 Sep 2016 10:56:05 +0000 (11:56 +0100)]
arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()

smp_mb__before_spinlock() is intended to upgrade a spin_lock() operation
to a full barrier, such that prior stores are ordered with respect to
loads and stores occuring inside the critical section.

Unfortunately, the core code defines the barrier as smp_wmb(), which
is insufficient to provide the required ordering guarantees when used in
conjunction with our load-acquire-based spinlock implementation.

This patch overrides the arm64 definition of smp_mb__before_spinlock()
to map to a full smp_mb().

Cc: <stable@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
8 years agousb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
Clemens Gruber [Mon, 5 Sep 2016 17:29:58 +0000 (19:29 +0200)]
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase

Problems with the signal integrity of the high speed USB data lines or
noise on reference ground lines can cause the i.MX6 USB controller to
violate USB specs and exhibit unexpected behavior.

It was observed that USBi_UI interrupts were triggered first and when
isr_setup_status_phase was called, ci->status was NULL, which lead to a
NULL pointer dereference kernel panic.

This patch fixes the kernel panic, emits a warning once and returns
-EPIPE to halt the device and let the host get stalled.
It also adds a comment to point people, who are experiencing this issue,
to their USB hardware design.

Cc: <stable@vger.kernel.org> #4.1+
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agoMerge branch 'nfp-fixes'
David S. Miller [Fri, 9 Sep 2016 00:18:42 +0000 (17:18 -0700)]
Merge branch 'nfp-fixes'

Jakub Kicinski says:

====================
nfp: fixes and trivial cleanup

First patch drops unnecessary version.h includes.  Second one
drops support for pre-release versions of FW ABI.  Removing
FW ABI 0.0 from supported set is particularly good since 0
could just be uninitialized memory.  Last but not least I drop
unnecessary padding of frames on RX which makes us count bytes
incorrectly for the VF2VF traffic.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: don't pad frames on receive
Jakub Kicinski [Wed, 7 Sep 2016 18:45:37 +0000 (19:45 +0100)]
nfp: don't pad frames on receive

There is no need to pad frames to ETH_ZLEN on RX.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: drop support for old firmware ABIs
Jakub Kicinski [Wed, 7 Sep 2016 18:45:36 +0000 (19:45 +0100)]
nfp: drop support for old firmware ABIs

Be more strict about FW versions.  Drop support for old
transitional revisions which were never used in production.
Dropping support for FW ABI version 0.0.0.0 is particularly
useful because 0 could just be uninitialized memory.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: remove linux/version.h includes
Jakub Kicinski [Wed, 7 Sep 2016 18:45:35 +0000 (19:45 +0100)]
nfp: remove linux/version.h includes

Remove unnecessary version.h includes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: cwnd does not increase in TCP YeAH
Artem Germanov [Wed, 7 Sep 2016 17:49:36 +0000 (10:49 -0700)]
tcp: cwnd does not increase in TCP YeAH

Commit 76174004a0f19785a328f40388e87e982bbf69b9
(tcp: do not slow start when cwnd equals ssthresh )
introduced regression in TCP YeAH. Using 100ms delay 1% loss virtual
ethernet link kernel 4.2 shows bandwidth ~500KB/s for single TCP
connection and kernel 4.3 and above (including 4.8-rc4) shows bandwidth
~100KB/s.
   That is caused by stalled cwnd when cwnd equals ssthresh. This patch
fixes it by proper increasing cwnd in this case.

Signed-off-by: Artem Germanov <agermanov@anchorfree.com>
Acked-by: Dmitry Adamushko <d.adamushko@anchorfree.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mlx5-fixes'
David S. Miller [Thu, 8 Sep 2016 23:15:29 +0000 (16:15 -0700)]
Merge branch 'mlx5-fixes'

Saeed Mahameed says:

====================
Mellanox 100G mlx5 fixes 2016-09-07

The following series contains bug fixes for the mlx5e driver.

from Gal,
- Static code checker cleanup (casting overflow)
- Fix global PFC counter statistics reading
- Fix HW LRO when vlan stripping is off

From Bodong,
- Deprecate old autoneg capability bit and use new one.

From Tariq,
- Fix xmit more counter race condition
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Fix parsing of vlan packets when updating lro header
Gal Pressman [Wed, 7 Sep 2016 16:08:01 +0000 (19:08 +0300)]
net/mlx5e: Fix parsing of vlan packets when updating lro header

Currently vlan tagged packets were not parsed correctly
and assumed to be regular IPv4/IPv6 packets.
We should check for 802.1Q/802.1ad tags and update the lro header
accordingly.
This fixes the use case where LRO is on and rxvlan is off
(vlan stripping is off).

Fixes: e586b3b0baee ('net/mlx5: Ethernet Datapath files')
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Fix global PFC counters replication
Gal Pressman [Wed, 7 Sep 2016 16:08:00 +0000 (19:08 +0300)]
net/mlx5e: Fix global PFC counters replication

Currently when reading global PFC statistics we left the counter
iterator out of the equation and we ended up reading the same counter
over and over again.

Instead of reading the counter at index 0 on every iteration we now read
the counter at index (i).

Fixes: e989d5a532ce ('net/mlx5e: Expose flow control counters to ethtool')
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Prevent casting overflow
Gal Pressman [Wed, 7 Sep 2016 16:07:59 +0000 (19:07 +0300)]
net/mlx5e: Prevent casting overflow

On 64 bits architectures unsigned long is longer than u32,
casting to unsigned long will result in overflow.
We need to first allocate an unsigned long variable, then assign the
wanted value.

Fixes: 665bc53969d7 ('net/mlx5e: Use new ethtool get/set link ksettings API')
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Move an_disable_cap bit to a new position
Bodong Wang [Wed, 7 Sep 2016 16:07:58 +0000 (19:07 +0300)]
net/mlx5e: Move an_disable_cap bit to a new position

Previous an_disable_cap position bit31 is deprecated to be use in driver
with newer firmware.  New firmware will advertise the same capability
in bit29.

Old capability didn't allow setting more than one protocol for a
specific speed when autoneg is off, while newer firmware will allow
this and it is indicated in the new capability location.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Fix xmit_more counter race issue
Tariq Toukan [Wed, 7 Sep 2016 16:07:57 +0000 (19:07 +0300)]
net/mlx5e: Fix xmit_more counter race issue

Update the xmit_more counter before notifying the HW,
to prevent a possible use-after-free of the skb.

Fixes: c8cf78fe100b ("net/mlx5e: Add ethtool counter for TX xmit_more")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: fastopen: avoid negative sk_forward_alloc
Eric Dumazet [Wed, 7 Sep 2016 15:34:11 +0000 (08:34 -0700)]
tcp: fastopen: avoid negative sk_forward_alloc

When DATA and/or FIN are carried in a SYN/ACK message or SYN message,
we append an skb in socket receive queue, but we forget to call
sk_forced_mem_schedule().

Effect is that the socket has a negative sk->sk_forward_alloc as long as
the message is not read by the application.

Josh Hunt fixed a similar issue in commit d22e15371811 ("tcp: fix tcp
fin memory accounting")

Fixes: 168a8f58059a ("tcp: TCP Fast Open Server - main code path")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agocpufreq-stats: Minor documentation fix
Jean Delvare [Thu, 8 Sep 2016 21:05:07 +0000 (23:05 +0200)]
cpufreq-stats: Minor documentation fix

The cpufreq-stats code can no longer be built as a module, so it now
appears with square brackets in menuconfig.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 1aefc75b2449 (cpufreq: stats: Make the stats code non-modular)
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoi2c: rk3x: Restore clock settings at resume time
Doug Anderson [Mon, 29 Aug 2016 21:22:36 +0000 (14:22 -0700)]
i2c: rk3x: Restore clock settings at resume time

Depending on a number of factors including:
- Which exact Rockchip SoC we're working with
- How deep we suspend
- Which i2c port we're on

We might lose the state of the i2c registers at suspend time.
Specifically we've found that on rk3399 the i2c ports that are not in
the PMU power domain lose their state with the current suspend depth
configured by ARM Tursted Firmware.

Note that there are very few actual i2c registers that aren't configured
per transfer anyway so all we actually need to re-configure are the
clock config registers.  We'll just add a call to rk3x_i2c_adapt_div()
at resume time and be done with it.

NOTE: On rk3399 on ports whose power was lost, I put printouts in at
resume time.  I saw things like:
  before: con=0x00010300, div=0x00060006
  after:  con=0x00010200, div=0x00180025

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: David Wu <david.wu@rock-chips.com>
Tested-by: David Wu <david.wu@rock-chips.com>
[wsa: removed duplicate const]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoi2c: Spelling s/acknowedge/acknowledge/
Geert Uytterhoeven [Wed, 31 Aug 2016 09:38:48 +0000 (11:38 +0200)]
i2c: Spelling s/acknowedge/acknowledge/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoi2c: designware: save the preset value of DW_IC_SDA_HOLD
Zhuo-hao Lee [Sat, 27 Aug 2016 07:39:30 +0000 (15:39 +0800)]
i2c: designware: save the preset value of DW_IC_SDA_HOLD

There are several ways to set the SDA hold time for i2c controller,
including: Device Tree, built-in device properties and ACPI. However,
if the SDA hold time is not specified by above method, we should
read the value, where it is preset by firmware, and save it to
sda_hold_time. This is needed because when i2c controller enters
runtime suspend, the DW_IC_SDA_HOLD value will be reset to chipset
default value. And during runtime resume, i2c_dw_init will be called
to reconfigure i2c controller. If sda_hold_time is zero, the chipset
default hold time will be used, that will be too short for some
platforms. Therefore, to have a better tolerance, the DW_IC_SDA_HOLD
value should be kept by sda_hold_time.

Signed-off-by: Zhuo-hao Lee <zhuo-hao.lee@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
David S. Miller [Thu, 8 Sep 2016 20:12:37 +0000 (13:12 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
ipsec 2016-09-08

1) Fix a crash when xfrm_dump_sa returns an error.
   From Vegard Nossum.

2) Remove some incorrect WARN() on normal error handling.
   From Vegard Nossum.

3) Ignore socket policies when rebuilding hash tables,
   socket policies are not inserted into the hash tables.
   From Tobias Brunner.

4) Initialize and check tunnel pointers properly before
   we use it. From Alexey Kodanev.

5) Fix l3mdev oif setting on xfrm dst lookups.
   From David Ahern.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client
Linus Torvalds [Thu, 8 Sep 2016 19:23:13 +0000 (12:23 -0700)]
Merge tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix for a 4.7 performance regression, caused by a typo in an if
  condition"

* tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client:
  ceph: do not modify fi->frag in need_reset_readdir()

8 years agoMerge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Thu, 8 Sep 2016 19:19:24 +0000 (12:19 -0700)]
Merge branch 'dmi-for-linus' of git://git./linux/kernel/git/jdelvare/staging

Pull dmi fix from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  dmi-id: don't free dev structure after calling device_register

8 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Thu, 8 Sep 2016 19:05:15 +0000 (12:05 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "This is a slightly larger batch of fixes that we've been sitting on a
  few -rcs.  Most of them are simple oneliners, but there are two sets
  that are slightly larger and worth pointing out:

   - A set of patches to OMAP to deal with hwmod for RTC on am33xx
     (beaglebone SoC, among others).  It's the only clock that ever has
     a valid offset of 0, so a new flag needed introduction once this
     problem was discovered.

   - A collection of CCI fixes for performance counters discovered once
     people started using it on X-Gene CPUs"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
  arm-cci: pmu: Fix typo in event name
  Revert "ARM: tegra: fix erroneous address in dts"
  ARM: dts: imx6qdl: Fix SPDIF regression
  ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx
  ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name
  ARM: dts: kirkwood: Fix PCIe label on OpenRD
  ARM: kirkwood: ib62x0: fix size of u-boot environment partition
  bus: arm-ccn: make event groups reliable
  bus: arm-ccn: fix hrtimer registration
  bus: arm-ccn: fix PMU interrupt flags
  ARM: tegra: Correct polarity for Tegra114 PMIC interrupt
  MAINTAINERS: add tree entry for ARM/UniPhier architecture
  ARM: sun5i: Fix typo in trip point temperature
  MAINTAINERS: Switch to kernel.org account for Krzysztof Kozlowski
  ARM: imx6ul: populates platform device at .init_machine
  bus: arm-ccn: Add missing event attribute exclusions for host/guest
  bus: arm-ccn: Correct required arguments for XP PMU events
  bus: arm-ccn: Fix XP watchpoint settings bitmask
  bus: arm-ccn: Do not attempt to configure XPs for cycle counter
  bus: arm-ccn: Fix PMU handling of MN
  ...

8 years agoDocumentation: i2c: slave-interface: add note for driver development
Wolfram Sang [Thu, 25 Aug 2016 17:27:40 +0000 (19:27 +0200)]
Documentation: i2c: slave-interface: add note for driver development

Make it clear that adding slave support shall not disable master
functionality. We can have both, so we should.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoi2c: mux: demux-pinctrl: run properly with multiple instances
Wolfram Sang [Tue, 23 Aug 2016 15:28:03 +0000 (17:28 +0200)]
i2c: mux: demux-pinctrl: run properly with multiple instances

We can't use a static property for all the changesets, so we now create
dynamic ones for each changeset.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Fixes: 50a5ba87690814 ("i2c: mux: demux-pinctrl: add driver")
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
8 years agoALSA: rawmidi: Fix possible deadlock with virmidi registration
Takashi Iwai [Tue, 30 Aug 2016 12:45:46 +0000 (14:45 +0200)]
ALSA: rawmidi: Fix possible deadlock with virmidi registration

When a seq-virmidi driver is initialized, it registers a rawmidi
instance with its callback to create an associated seq kernel client.
Currently it's done throughly in rawmidi's register_mutex context.
Recently it was found that this may lead to a deadlock another rawmidi
device that is being attached with the sequencer is accessed, as both
open with the same register_mutex.  This was actually triggered by
syzkaller, as Dmitry Vyukov reported:

======================================================
 [ INFO: possible circular locking dependency detected ]
 4.8.0-rc1+ #11 Not tainted
 -------------------------------------------------------
 syz-executor/7154 is trying to acquire lock:
  (register_mutex#5){+.+.+.}, at: [<ffffffff84fd6d4b>] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341

 but task is already holding lock:
  (&grp->list_mutex){++++.+}, at: [<ffffffff850138bb>] check_and_subscribe_port+0x5b/0x5c0 sound/core/seq/seq_ports.c:495

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #1 (&grp->list_mutex){++++.+}:
    [<ffffffff8147a3a8>] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746
    [<ffffffff863f6199>] down_read+0x49/0xc0 kernel/locking/rwsem.c:22
    [<     inline     >] deliver_to_subscribers sound/core/seq/seq_clientmgr.c:681
    [<ffffffff85005c5e>] snd_seq_deliver_event+0x35e/0x890 sound/core/seq/seq_clientmgr.c:822
    [<ffffffff85006e96>] > snd_seq_kernel_client_dispatch+0x126/0x170 sound/core/seq/seq_clientmgr.c:2418
    [<ffffffff85012c52>] snd_seq_system_broadcast+0xb2/0xf0 sound/core/seq/seq_system.c:101
    [<ffffffff84fff70a>] snd_seq_create_kernel_client+0x24a/0x330 sound/core/seq/seq_clientmgr.c:2297
    [<     inline     >] snd_virmidi_dev_attach_seq sound/core/seq/seq_virmidi.c:383
    [<ffffffff8502d29f>] snd_virmidi_dev_register+0x29f/0x750 sound/core/seq/seq_virmidi.c:450
    [<ffffffff84fd208c>] snd_rawmidi_dev_register+0x30c/0xd40 sound/core/rawmidi.c:1645
    [<ffffffff84f816d3>] __snd_device_register.part.0+0x63/0xc0 sound/core/device.c:164
    [<     inline     >] __snd_device_register sound/core/device.c:162
    [<ffffffff84f8235d>] snd_device_register_all+0xad/0x110 sound/core/device.c:212
    [<ffffffff84f7546f>] snd_card_register+0xef/0x6c0 sound/core/init.c:749
    [<ffffffff85040b7f>] snd_virmidi_probe+0x3ef/0x590 sound/drivers/virmidi.c:123
    [<ffffffff833ebf7b>] platform_drv_probe+0x8b/0x170 drivers/base/platform.c:564
    ......

 -> #0 (register_mutex#5){+.+.+.}:
    [<     inline     >] check_prev_add kernel/locking/lockdep.c:1829
    [<     inline     >] check_prevs_add kernel/locking/lockdep.c:1939
    [<     inline     >] validate_chain kernel/locking/lockdep.c:2266
    [<ffffffff814791f4>] __lock_acquire+0x4d44/0x4d80 kernel/locking/lockdep.c:3335
    [<ffffffff8147a3a8>] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746
    [<     inline     >] __mutex_lock_common kernel/locking/mutex.c:521
    [<ffffffff863f0ef1>] mutex_lock_nested+0xb1/0xa20 kernel/locking/mutex.c:621
    [<ffffffff84fd6d4b>] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341
    [<ffffffff8502e7c7>] midisynth_subscribe+0xf7/0x350 sound/core/seq/seq_midi.c:188
    [<     inline     >] subscribe_port sound/core/seq/seq_ports.c:427
    [<ffffffff85013cc7>] check_and_subscribe_port+0x467/0x5c0 sound/core/seq/seq_ports.c:510
    [<ffffffff85015da9>] snd_seq_port_connect+0x2c9/0x500 sound/core/seq/seq_ports.c:579
    [<ffffffff850079b8>] snd_seq_ioctl_subscribe_port+0x1d8/0x2b0 sound/core/seq/seq_clientmgr.c:1480
    [<ffffffff84ffe9e4>] snd_seq_do_ioctl+0x184/0x1e0 sound/core/seq/seq_clientmgr.c:2225
    [<ffffffff84ffeae8>] snd_seq_kernel_client_ctl+0xa8/0x110 sound/core/seq/seq_clientmgr.c:2440
    [<ffffffff85027664>] snd_seq_oss_midi_open+0x3b4/0x610 sound/core/seq/oss/seq_oss_midi.c:375
    [<ffffffff85023d67>] snd_seq_oss_synth_setup_midi+0x107/0x4c0 sound/core/seq/oss/seq_oss_synth.c:281
    [<ffffffff8501b0a8>] snd_seq_oss_open+0x748/0x8d0 sound/core/seq/oss/seq_oss_init.c:274
    [<ffffffff85019d8a>] odev_open+0x6a/0x90 sound/core/seq/oss/seq_oss.c:138
    [<ffffffff84f7040f>] soundcore_open+0x30f/0x640 sound/sound_core.c:639
    ......

 other info that might help us debug this:

 Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(&grp->list_mutex);
                                lock(register_mutex#5);
                                lock(&grp->list_mutex);
   lock(register_mutex#5);

 *** DEADLOCK ***
======================================================

The fix is to simply move the registration parts in
snd_rawmidi_dev_register() to the outside of the register_mutex lock.
The lock is needed only to manage the linked list, and it's not
necessarily to cover the whole initialization process.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: timer: Fix zero-division by continue of uninitialized instance
Takashi Iwai [Wed, 7 Sep 2016 13:45:31 +0000 (15:45 +0200)]
ALSA: timer: Fix zero-division by continue of uninitialized instance

When a user timer instance is continued without the explicit start
beforehand, the system gets eventually zero-division error like:

  divide error: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN
  CPU: 1 PID: 27320 Comm: syz-executor Not tainted 4.8.0-rc3-next-20160825+ #8
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
   task: ffff88003c9b2280 task.stack: ffff880027280000
   RIP: 0010:[<ffffffff858e1a6c>]  [<     inline     >] ktime_divns include/linux/ktime.h:195
   RIP: 0010:[<ffffffff858e1a6c>]  [<ffffffff858e1a6c>] snd_hrtimer_callback+0x1bc/0x3c0 sound/core/hrtimer.c:62
  Call Trace:
   <IRQ>
   [<     inline     >] __run_hrtimer kernel/time/hrtimer.c:1238
   [<ffffffff81504335>] __hrtimer_run_queues+0x325/0xe70 kernel/time/hrtimer.c:1302
   [<ffffffff81506ceb>] hrtimer_interrupt+0x18b/0x420 kernel/time/hrtimer.c:1336
   [<ffffffff8126d8df>] local_apic_timer_interrupt+0x6f/0xe0 arch/x86/kernel/apic/apic.c:933
   [<ffffffff86e13056>] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:957
   [<ffffffff86e1210c>] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:487
   <EOI>
   .....

Although a similar issue was spotted and a fix patch was merged in
commit [6b760bb2c63a: ALSA: timer: fix division by zero after
SNDRV_TIMER_IOCTL_CONTINUE], it seems covering only a part of
iceberg.

In this patch, we fix the issue a bit more drastically.  Basically the
continue of an uninitialized timer is supposed to be a fresh start, so
we do it for user timers.  For the direct snd_timer_continue() call,
there is no way to pass the initial tick value, so we kick out for the
uninitialized case.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agodmi-id: don't free dev structure after calling device_register
Allen Hung [Fri, 15 Jul 2016 09:42:22 +0000 (17:42 +0800)]
dmi-id: don't free dev structure after calling device_register

dmi_dev is freed in error exit code but, according to the document
of device_register, it should never directly free device structure
after calling this function, even if it returned an error! Use
put_device() instead.

Signed-off-by: Allen Hung <allen_hung@dell.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
8 years agoxhci: fix null pointer dereference in stop command timeout function
Mathias Nyman [Wed, 7 Sep 2016 14:26:33 +0000 (17:26 +0300)]
xhci: fix null pointer dereference in stop command timeout function

The stop endpoint command has its own 5 second timeout timer.
If the timeout function is triggered between USB3 and USB2 host
removal it will try to call usb_hc_died(xhci_to_hcd(xhci)->primary_hcd)

the ->primary_hcd will be set to NULL at USB3 hcd removal.

Fix this by first checking if the PCI host is being removed, and
also by using only xhci_to_hcd() as it will always return the primary
hcd.

CC: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoMerge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Linus Torvalds [Thu, 8 Sep 2016 04:28:26 +0000 (21:28 -0700)]
Merge branch 'for-rc' of git://git./linux/kernel/git/rzhang/linux

Pull thermal fix from Zhang Rui:
 "Only one patch this time, which fixes a crash in rcar_thermal driver.
  From Dirk Behme"

* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: rcar_thermal: Fix priv->zone error handling

8 years agoMerge tag 'sunxi-fixes-for-4.8' of https://git.kernel.org/pub/scm/linux/kernel/git...
Olof Johansson [Thu, 8 Sep 2016 04:25:08 +0000 (21:25 -0700)]
Merge tag 'sunxi-fixes-for-4.8' of https://git./linux/kernel/git/mripard/linux into fixes

Allwinner fixes for 4.8

A single patch fixing a typo in the temperature trip points in the A13
DTSI.

* tag 'sunxi-fixes-for-4.8' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: sun5i: Fix typo in trip point temperature

Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agoarm-cci: pmu: Fix typo in event name
Suzuki K Poulose [Mon, 5 Sep 2016 15:27:53 +0000 (16:27 +0100)]
arm-cci: pmu: Fix typo in event name

For one of the CCI events exposed under sysfs, "snoop" was typo'd as
"snopp". Correct this such that users see the expected event name when
enumerating events via sysfs.

Cc: arm@kernel.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agoMerge tag 'imx-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo...
Olof Johansson [Thu, 8 Sep 2016 04:24:22 +0000 (21:24 -0700)]
Merge tag 'imx-fixes-4.8-2' of git://git./linux/kernel/git/shawnguo/linux into fixes

i.MX fixes for 4.8, 2nd round:
 - Fix misspelled "ti,x-plate-ohms" property name of touchscreen
   controller for imx7d-sdb DTS.
 - Add missing BM_CLPCR_BYPASS_PMIC_READY setting for i.MX6SX to get
   suspend/resume work properly.
 - Fix SPDIF regression on imx6qdl which caused by a clock update on
   spdif device node.

* tag 'imx-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx6qdl: Fix SPDIF regression
  ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx
  ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name

Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agoRevert "ARM: tegra: fix erroneous address in dts"
Olof Johansson [Thu, 8 Sep 2016 04:16:40 +0000 (21:16 -0700)]
Revert "ARM: tegra: fix erroneous address in dts"

This reverts commit b5c86b7496d74f6e454bcab5166efa023e1f0459.

This is no longer needed due to other changes going into 4.8 to rename
the unit addresses on a large number of device nodes. So it was picked up
for v4.8-rc1 in error.

Reported-by: Ralf Ramsauer <ralf@ramses-pyramidenbau.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
8 years agopowerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
Paul Mackerras [Fri, 2 Sep 2016 11:47:59 +0000 (21:47 +1000)]
powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET

In commit c60ac5693c47 ("powerpc: Update kernel VSID range", 2013-03-13)
we lost a check on the region number (the top four bits of the effective
address) for addresses below PAGE_OFFSET.  That commit replaced a check
that the top 18 bits were all zero with a check that bits 46 - 59 were
zero (performed for all addresses, not just user addresses).

This means that userspace can access an address like 0x1000_0xxx_xxxx_xxxx
and we will insert a valid SLB entry for it.  The VSID used will be the
same as if the top 4 bits were 0, but the page size will be some random
value obtained by indexing beyond the end of the mm_ctx_high_slices_psize
array in the paca.  If that page size is the same as would be used for
region 0, then userspace just has an alias of the region 0 space.  If the
page size is different, then no HPTE will be found for the access, and
the process will get a SIGSEGV (since hash_page_mm() will refuse to create
a HPTE for the bogus address).

The access beyond the end of the mm_ctx_high_slices_psize can be at most
5.5MB past the array, and so will be in RAM somewhere.  Since the access
is a load performed in real mode, it won't fault or crash the kernel.
At most this bug could perhaps leak a little bit of information about
blocks of 32 bytes of memory located at offsets of i * 512kB past the
paca->mm_ctx_high_slices_psize array, for 1 <= i <= 11.

Fixes: c60ac5693c47 ("powerpc: Update kernel VSID range")
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agopowerpc/32: Fix again csum_partial_copy_generic()
Christophe Leroy [Fri, 26 Aug 2016 14:45:13 +0000 (16:45 +0200)]
powerpc/32: Fix again csum_partial_copy_generic()

Commit 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic()
based on copy_tofrom_user()") introduced a bug when destination address
is odd and len is lower than cacheline size.

In that case the resulting csum value doesn't have to be rotated one
byte because the cache-aligned copy part is skipped so no alignment
is performed.

Fixes: 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()")
Cc: stable@vger.kernel.org # v4.6+
Reported-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Tested-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agopowerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE
Gavin Shan [Tue, 6 Sep 2016 04:17:18 +0000 (14:17 +1000)]
powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE

In pnv_ioda_free_pe(), the PE object (including the associated PE
number) is cleared before resetting the corresponding bit in the
PE allocation bitmap. It means PE#0 is always released to the bitmap
wrongly.

This fixes above issue by caching the PE number before the PE object
is cleared.

Fixes: 1e9167726c41 ("powerpc/powernv: Use PE instead of number during setup and release"
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agoMAINTAINERS: Update CPMAC email address
Florian Fainelli [Wed, 7 Sep 2016 03:22:21 +0000 (20:22 -0700)]
MAINTAINERS: Update CPMAC email address

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>