GitHub/exynos8895/android_kernel_samsung_universal8895.git
10 years agonet: stmmac: Correct duplicate if/then/else case found by cppcheck
Vince Bridgers [Mon, 30 Jun 2014 01:34:52 +0000 (20:34 -0500)]
net: stmmac: Correct duplicate if/then/else case found by cppcheck

Cppcheck found a duplicate if/then/else case where a receive descriptor
was being processed. This patch corrects that issue.

cppcheck --force --enable=all --inline-suppr .
...
Checking enh_desc.c...
[enh_desc.c:148] -> [enh_desc.c:144]: (style) Found duplicate if expressions.
...

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: stmmac: add platform init/exit for Altera's ARM socfpga
Vince Bridgers [Mon, 30 Jun 2014 01:34:51 +0000 (20:34 -0500)]
net: stmmac: add platform init/exit for Altera's ARM socfpga

This patch adds platform init/exit functions and modifications to support
suspend/resume for the Altera Cyclone 5 SOC Ethernet controller. The platform
exit function puts the controller into reset using the socfpga reset
controller driver. The platform init function sets up the Synopsys mac by
first making sure the Ethernet controller is held in reset, programming the
phy mode through external support logic, then deasserts reset through
the socfpga reset manager driver.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: reassembly: fix possible buffer overflow
Alexander Aring [Sun, 29 Jun 2014 11:10:18 +0000 (13:10 +0200)]
ieee802154: reassembly: fix possible buffer overflow

The max_dsize attribute in ctl_table for lowpan_frags_ns_ctl_table is
configured with integer accessing methods. This patch change the
max_dsize attribute to int to avoid a possible buffer overflow.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'mlx4'
David S. Miller [Thu, 3 Jul 2014 01:29:28 +0000 (18:29 -0700)]
Merge branch 'mlx4'

Amir Vadai says:

====================
Mellanox EN driver fixes 2014-06-23

Below are some fixes to patches submitted to 3.16.

First patch is according to discussions with Ben [1] and Thomas [2] - to do not
use affinity notifier, since it breaks RFS. Instead detect changes in IRQ
affinity map, by checking if current CPU is set in affinity map on NAPI poll.
The two other patches fix some bugs introduced in commit [3].

Patches were applied and tested over commit dba6311: ('powerpc: bpf: Fix the
broken LD_VLAN_TAG_PRESENT test')
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_en: IRQ affinity hint is not cleared on port down
Amir Vadai [Sun, 29 Jun 2014 08:54:57 +0000 (11:54 +0300)]
net/mlx4_en: IRQ affinity hint is not cleared on port down

Need to remove affinity hint at mlx4_en_deactivate_cq() and not at
mlx4_en_destroy_cq() - since affinity_mask might be free'd while still
being used by procfs.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agolib/cpumask: cpumask_set_cpu_local_first to use all cores when numa node is not defined
Amir Vadai [Sun, 29 Jun 2014 08:54:56 +0000 (11:54 +0300)]
lib/cpumask: cpumask_set_cpu_local_first to use all cores when numa node is not defined

When device is non numa aware (numa_node == -1), use all online cpu's.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_en: Don't use irq_affinity_notifier to track changes in IRQ affinity map
Amir Vadai [Sun, 29 Jun 2014 08:54:55 +0000 (11:54 +0300)]
net/mlx4_en: Don't use irq_affinity_notifier to track changes in IRQ affinity map

IRQ affinity notifier can only have a single notifier - cpu_rmap
notifier. Can't use it to track changes in IRQ affinity map.
Detect IRQ affinity changes by comparing CPU to current IRQ affinity map
during NAPI poll thread.

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Ben Hutchings <ben@decadent.org.uk>
Fixes: 2eacc23 ("net/mlx4_core: Enforce irq affinity changes immediatly")
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodefxx: Fix !DYNAMIC_BUFFERS compilation warnings
Maciej W. Rozycki [Sun, 29 Jun 2014 01:09:19 +0000 (02:09 +0100)]
defxx: Fix !DYNAMIC_BUFFERS compilation warnings

This fixes compilation warnings:

drivers/net/fddi/defxx.c:294: warning: 'dfx_rcv_flush' declared inline after being called
drivers/net/fddi/defxx.c:294: warning: previous declaration of 'dfx_rcv_flush' was here
drivers/net/fddi/defxx.c:2854: warning: 'my_skb_align' defined but not used

triggered when the driver is built with DYNAMIC_BUFFERS undefined.  Code
tested to work just fine with these changes and a few DEFPA and DEFTA
boards.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodefxx: Remove an incorrectly inverted preprocessor conditional
Maciej W. Rozycki [Sun, 29 Jun 2014 00:45:53 +0000 (01:45 +0100)]
defxx: Remove an incorrectly inverted preprocessor conditional

The RX handler of the driver has two paths switched between, depending on
the size of the frame received, as determined by SKBUFF_RX_COPYBREAK.

When a small frame is received, a new skb allocated has data space large
enough to hold the incoming frame only, and data is copied there from the
original skb whose buffer is returned to the DMA RX ring; in that case
`rx_in_place' is 0.  When a large frame is received, a new skb allocated
has data space large enough to hold the largest frame possible, including
the overhead for alignment, the receive status and padding, over 4.5kiB
overall, and its buffer is placed on the DMA RX ring while the original
buffer is passed up to the network stack avoiding the need to copy data;
in that case `rx_in_place' is 1.

However the latter scenario is only possible when dynamic buffers are
used, as determined by DYNAMIC_BUFFERS, because otherwise the buffers used
for the DMA RX ring are fixed at the time the interface is brought up.

That leads to an observation that the preprocessor conditional around the
`rx_in_place' check is inverted, the check only really matters when
dynamic buffers are in use.  It has gone unnoticed for many years since
support for using dynamic buffers on the DMA RX ring was introduced in
2.1.40 -- because the only problem that results is in the case where
`rx_in_place' is 1 frame data received is unnecessarily copied to the
newly-allocated buffer, before the buffer placed on the the DMA receive RX
and its contents ignored.  Therefore the only symptom is some performance
loss.

Rather than flipping the condition though I decided to discard the
conditional altogether -- in the case of static buffers `rx_in_place' is
always 0 so GCC will optimise the C conditional away instead.

Tested on a few DEFPA and DEFTA boards successfully using both small and
large frames, both with DYNAMIC_BUFFERS defined and with the macro
undefined.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: Fix divide by zero when pushing during tcp-repair
Christoph Paasch [Sat, 28 Jun 2014 16:26:37 +0000 (18:26 +0200)]
tcp: Fix divide by zero when pushing during tcp-repair

When in repair-mode and TCP_RECV_QUEUE is set, we end up calling
tcp_push with mss_now being 0. If data is in the send-queue and
tcp_set_skb_tso_segs gets called, we crash because it will divide by
mss_now:

[  347.151939] divide error: 0000 [#1] SMP
[  347.152907] Modules linked in:
[  347.152907] CPU: 1 PID: 1123 Comm: packetdrill Not tainted 3.16.0-rc2 #4
[  347.152907] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[  347.152907] task: f5b88540 ti: f3c82000 task.ti: f3c82000
[  347.152907] EIP: 0060:[<c1601359>] EFLAGS: 00210246 CPU: 1
[  347.152907] EIP is at tcp_set_skb_tso_segs+0x49/0xa0
[  347.152907] EAX: 00000b67 EBX: f5acd080 ECX: 00000000 EDX: 00000000
[  347.152907] ESI: f5a28f40 EDI: f3c88f00 EBP: f3c83d10 ESP: f3c83d00
[  347.152907]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  347.152907] CR0: 80050033 CR2: 083158b0 CR3: 35146000 CR4: 000006b0
[  347.152907] Stack:
[  347.152907]  c167f9d9 f5acd080 000005b4 00000002 f3c83d20 c16013e6 f3c88f00 f5acd080
[  347.152907]  f3c83da0 c1603b5a f3c83d38 c10a0188 00000000 00000000 f3c83d84 c10acc85
[  347.152907]  c1ad5ec0 00000000 00000000 c1ad679c 010003e0 00000000 00000000 f3c88fc8
[  347.152907] Call Trace:
[  347.152907]  [<c167f9d9>] ? apic_timer_interrupt+0x2d/0x34
[  347.152907]  [<c16013e6>] tcp_init_tso_segs+0x36/0x50
[  347.152907]  [<c1603b5a>] tcp_write_xmit+0x7a/0xbf0
[  347.152907]  [<c10a0188>] ? up+0x28/0x40
[  347.152907]  [<c10acc85>] ? console_unlock+0x295/0x480
[  347.152907]  [<c10ad24f>] ? vprintk_emit+0x1ef/0x4b0
[  347.152907]  [<c1605716>] __tcp_push_pending_frames+0x36/0xd0
[  347.152907]  [<c15f4860>] tcp_push+0xf0/0x120
[  347.152907]  [<c15f7641>] tcp_sendmsg+0xf1/0xbf0
[  347.152907]  [<c116d920>] ? kmem_cache_free+0xf0/0x120
[  347.152907]  [<c106a682>] ? __sigqueue_free+0x32/0x40
[  347.152907]  [<c106a682>] ? __sigqueue_free+0x32/0x40
[  347.152907]  [<c114f0f0>] ? do_wp_page+0x3e0/0x850
[  347.152907]  [<c161c36a>] inet_sendmsg+0x4a/0xb0
[  347.152907]  [<c1150269>] ? handle_mm_fault+0x709/0xfb0
[  347.152907]  [<c15a006b>] sock_aio_write+0xbb/0xd0
[  347.152907]  [<c1180b79>] do_sync_write+0x69/0xa0
[  347.152907]  [<c1181023>] vfs_write+0x123/0x160
[  347.152907]  [<c1181d55>] SyS_write+0x55/0xb0
[  347.152907]  [<c167f0d8>] sysenter_do_call+0x12/0x28

This can easily be reproduced with the following packetdrill-script (the
"magic" with netem, sk_pacing and limit_output_bytes is done to prevent
the kernel from pushing all segments, because hitting the limit without
doing this is not so easy with packetdrill):

0   socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0  setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0

+0  bind(3, ..., ...) = 0
+0  listen(3, 1) = 0

+0  < S 0:0(0) win 32792 <mss 1460>
+0  > S. 0:0(0) ack 1 <mss 1460>
+0.1  < . 1:1(0) ack 1 win 65000

+0  accept(3, ..., ...) = 4

// This forces that not all segments of the snd-queue will be pushed
+0 `tc qdisc add dev tun0 root netem delay 10ms`
+0 `sysctl -w net.ipv4.tcp_limit_output_bytes=2`
+0 setsockopt(4, SOL_SOCKET, 47, [2], 4) = 0

+0 write(4,...,10000) = 10000
+0 write(4,...,10000) = 10000

// Set tcp-repair stuff, particularly TCP_RECV_QUEUE
+0 setsockopt(4, SOL_TCP, 19, [1], 4) = 0
+0 setsockopt(4, SOL_TCP, 20, [1], 4) = 0

// This now will make the write push the remaining segments
+0 setsockopt(4, SOL_SOCKET, 47, [20000], 4) = 0
+0 `sysctl -w net.ipv4.tcp_limit_output_bytes=130000`

// Now we will crash
+0 write(4,...,1000) = 1000

This happens since ec3423257508 (tcp: fix retransmission in repair
mode). Prior to that, the call to tcp_push was prevented by a check for
tp->repair.

The patch fixes it, by adding the new goto-label out_nopush. When exiting
tcp_sendmsg and a push is not required, which is the case for tp->repair,
we go to this label.

When repairing and calling send() with TCP_RECV_QUEUE, the data is
actually put in the receive-queue. So, no push is required because no
data has been added to the send-queue.

Cc: Andrew Vagin <avagin@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Fixes: ec3423257508 (tcp: fix retransmission in repair mode)
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Acked-by: Andrew Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: fix sparse warning in sk_dst_set()
Eric Dumazet [Wed, 2 Jul 2014 09:39:38 +0000 (02:39 -0700)]
net: fix sparse warning in sk_dst_set()

sk_dst_cache has __rcu annotation, so we need a cast to avoid
following sparse error :

include/net/sock.h:1774:19: warning: incorrect type in initializer (different address spaces)
include/net/sock.h:1774:19:    expected struct dst_entry [noderef] <asn:4>*__ret
include/net/sock.h:1774:19:    got struct dst_entry *dst

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 7f502361531e ("ipv4: irq safe sk_dst_[re]set() and ipv4_sk_update_pmtu() fix")
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovlan: free percpu stats in device destructor
Eric Dumazet [Wed, 2 Jul 2014 09:25:15 +0000 (02:25 -0700)]
vlan: free percpu stats in device destructor

Madalin-Cristian reported crashs happening after a recent commit
(5a4ae5f6e7d4 "vlan: unnecessary to check if vlan_pcpu_stats is NULL")

-----------------------------------------------------------------------
root@p5040ds:~# vconfig add eth8 1
root@p5040ds:~# vconfig rem eth8.1
Unable to handle kernel paging request for data at address 0x2bc88028
Faulting instruction address: 0xc058e950
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=8 CoreNet Generic
Modules linked in:
CPU: 3 PID: 2167 Comm: vconfig Tainted: G        W     3.16.0-rc3-00346-g65e85bf #2
task: e7264d90 ti: e2c2c000 task.ti: e2c2c000
NIP: c058e950 LR: c058ea30 CTR: c058e900
REGS: e2c2db20 TRAP: 0300   Tainted: G        W      (3.16.0-rc3-00346-g65e85bf)
MSR: 00029002 <CE,EE,ME>  CR: 48000428  XER: 20000000
DEAR: 2bc88028 ESR: 00000000
GPR00: c047299c e2c2dbd0 e7264d90 00000000 2bc88000 00000000 ffffffff 00000000
GPR08: 0000000f 00000000 000000ff 00000000 28000422 10121928 10100000 10100000
GPR16: 10100000 00000000 c07c5968 00000000 00000000 00000000 e2c2dc48 e7838000
GPR24: c07c5bac c07c58a8 e77290cc c07b0000 00000000 c05de6c0 e7838000 e2c2dc48
NIP [c058e950] vlan_dev_get_stats64+0x50/0x170
LR [c058ea30] vlan_dev_get_stats64+0x130/0x170
Call Trace:
[e2c2dbd0] [ffffffea] 0xffffffea (unreliable)
[e2c2dc20] [c047299c] dev_get_stats+0x4c/0x140
[e2c2dc40] [c0488ca8] rtnl_fill_ifinfo+0x3d8/0x960
[e2c2dd70] [c0489f4c] rtmsg_ifinfo+0x6c/0x110
[e2c2dd90] [c04731d4] rollback_registered_many+0x344/0x3b0
[e2c2ddd0] [c047332c] rollback_registered+0x2c/0x50
[e2c2ddf0] [c0476058] unregister_netdevice_queue+0x78/0xf0
[e2c2de00] [c058d800] unregister_vlan_dev+0xc0/0x160
[e2c2de20] [c058e360] vlan_ioctl_handler+0x1c0/0x550
[e2c2de90] [c045d11c] sock_ioctl+0x28c/0x2f0
[e2c2deb0] [c010d070] do_vfs_ioctl+0x90/0x7b0
[e2c2df20] [c010d7d0] SyS_ioctl+0x40/0x80
[e2c2df40] [c000f924] ret_from_syscall+0x0/0x3c

Fix this problem by freeing percpu stats from dev->destructor() instead
of ndo_uninit()

Reported-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com>
Fixes: 5a4ae5f6e7d4 ("vlan: unnecessary to check if vlan_pcpu_stats is NULL")
Cc: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: fix circular dependency in of_mdio code
Daniel Mack [Fri, 27 Jun 2014 23:23:35 +0000 (01:23 +0200)]
net: fix circular dependency in of_mdio code

Commit 86f6cf4127 (net: of_mdio: add of_mdiobus_link_phydev()) introduced a
circular dependency between libphy and of_mdio.

depmod: ERROR: <modroot>/kernel/drivers/net/phy/libphy.ko in
dependency cycle!
depmod: ERROR: <modroot>/kernel/drivers/of/of_mdio.ko in dependency cycle!

The problem is that of_mdio.c references &mdio_bus_type and libphy now
references of_mdiobus_link_phydev.

Fix this by not exporting of_mdiobus_link_phydev() from of_mdio.ko.
Make it a static function in mdio_bus.c instead.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Jeff Mahoney <jeffm@suse.com>
Fixes: 86f6cf4127 (net: of_mdio: add of_mdiobus_link_phydev())
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Wed, 2 Jul 2014 06:47:33 +0000 (23:47 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless

John W. Linville says:

====================
pull request: wireless 2014-06-27

Please pull the following batch of fixes for the 3.16 stream...

For the mac80211 bits, Johannes says:

"We have a fix from Eliad for a time calculation, a fix from Max for
head/tailroom when sending authentication packets, a revert that Felix
requested since the patch in question broke regulatory and a fix from
myself for an issue with a new command that we advertised in the wrong
place."

For the bluetooth bits, Gustavo says:

"A few fixes for 3.16. This pull request contains a NULL dereference fix,
and some security/pairing fixes."

For the iwlwifi bits, Emmanuel says:

"I have here a fix from Eliad for scheduled scan: it fixes a firmware
assertion. Arik reverts a patch I made that didn't take into account
that 3160 doesn't have UAPSD and hence, we can't assume that all
newer firmwares support the feature. Here too, the visible effect
is a firmware assertion. Along with that, we have a few fixes and
additions to the device list."

For the ath10k bits, Kalle says:

"Bartosz fixed an issue where we were not able to create 8 vdevs when
using DFS. Michal removed a false warning which was just confusing
people."

On top of that...

Arend van Spriel fixes a 'divide by zero' regression in brcmfmac.

Amitkumar Karwar corrects a transmit timeout in mwifiex.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: do not set packet length for RX buffers
Florian Fainelli [Thu, 26 Jun 2014 17:26:22 +0000 (10:26 -0700)]
net: bcmgenet: do not set packet length for RX buffers

Hardware will provide this information as soon as we will start
processing incoming packets, so there is no need to set the RX buffer
length during buffer allocation.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: start with carrier off
Florian Fainelli [Thu, 26 Jun 2014 17:26:21 +0000 (10:26 -0700)]
net: bcmgenet: start with carrier off

We use the PHY library which will determine the link state for us, make
sure we start with a carrier off until libphy has completed the link
training.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: disable clock before register_netdev
Florian Fainelli [Thu, 26 Jun 2014 17:26:20 +0000 (10:26 -0700)]
net: bcmgenet: disable clock before register_netdev

As soon as register_netdev() is called, the network device notifiers are
running which means that other parts of the kernel, or user-space
programs can call the network device ndo_open() callback and use the
interface.

Disable the Ethernet device clock before we register the network device
such that we do not create the following situation:

CPU0 CPU1
register_netdev()
bcmgenet_open()
clk_prepare_enable()
clk_disable_unprepare()

and leave the hardware block gated off, while we think it should be
gated on.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: systemport: fix TX NAPI work done return value
Florian Fainelli [Thu, 26 Jun 2014 17:06:46 +0000 (10:06 -0700)]
net: systemport: fix TX NAPI work done return value

Although we do not limit the number of packets the TX completion
function bcm_sysport_tx_reclaim() is allowed to reclaim, we were still
using its return value as-is. This means that we could hit the WARN() in
net/core/dev.c where work_done >= budget.

Make sure we do exit the NAPI context when the TX ring is empty, and
pretend there was no work to do.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: systemport: fix UniMAC reset logic
Florian Fainelli [Thu, 26 Jun 2014 17:06:45 +0000 (10:06 -0700)]
net: systemport: fix UniMAC reset logic

The UniMAC CMD_SW_RESET bit is not a self-clearing bit, so we need to
assert it, wait a bit and clear it manually. As a result, umac_reset()
is updated not to return any value. The previous version of the code
simply wrote 0 to the CMD register, which would make the busy-waiting
loop exit immediately, having zero effect.

By writing 0 to the CMD register, we were clearing all bits in the CMD
register, and not using the hardware reset default values which are
set on purpose.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: systemport: do not clear IFF_MULTICAST flag
Florian Fainelli [Thu, 26 Jun 2014 17:06:44 +0000 (10:06 -0700)]
net: systemport: do not clear IFF_MULTICAST flag

The SYSTEMPORT Ethernet MAC supports multicast just fine, it just lacks
any sort of Unicast/Broadcast/Multicasting filtering at the Ethernet MAC
level since that is handled by the front end Ethernet switch, but that
is properly handled by bcm_sysport_set_rx_mode().

Some user-space applications might be relying on the presence of this
flag to prevent using multicast sockets, this also prevents that
interface from joining the IPv6 all-router mcast group.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: fix possible panic under memory stress
Eric Dumazet [Thu, 26 Jun 2014 07:44:02 +0000 (00:44 -0700)]
bnx2x: fix possible panic under memory stress

While it is legal to kfree(NULL), it is not wise to use :
put_page(virt_to_head_page(NULL))

 BUG: unable to handle kernel paging request at ffffeba400000000
 IP: [<ffffffffc01f5928>] virt_to_head_page+0x36/0x44 [bnx2x]

Reported-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ariel Elior <ariel.elior@qlogic.com>
Fixes: d46d132cc021 ("bnx2x: use netdev_alloc_frag()")
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv4: irq safe sk_dst_[re]set() and ipv4_sk_update_pmtu() fix
Eric Dumazet [Mon, 30 Jun 2014 08:26:23 +0000 (01:26 -0700)]
ipv4: irq safe sk_dst_[re]set() and ipv4_sk_update_pmtu() fix

We have two different ways to handle changes to sk->sk_dst

First way (used by TCP) assumes socket lock is owned by caller, and use
no extra lock : __sk_dst_set() & __sk_dst_reset()

Another way (used by UDP) uses sk_dst_lock because socket lock is not
always taken. Note that sk_dst_lock is not softirq safe.

These ways are not inter changeable for a given socket type.

ipv4_sk_update_pmtu(), added in linux-3.8, added a race, as it used
the socket lock as synchronization, but users might be UDP sockets.

Instead of converting sk_dst_lock to a softirq safe version, use xchg()
as we did for sk_rx_dst in commit e47eb5dfb296b ("udp: ipv4: do not use
sk_dst_lock from softirq context")

In a follow up patch, we probably can remove sk_dst_lock, as it is
only used in IPv6.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Fixes: 9cb3a50c5f63e ("ipv4: Invalidate the socket cached route on pmtu events if possible")
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopowerpc: bpf: Fix the broken LD_VLAN_TAG_PRESENT test
Denis Kirjanov [Wed, 25 Jun 2014 17:34:57 +0000 (21:34 +0400)]
powerpc: bpf: Fix the broken LD_VLAN_TAG_PRESENT test

We have to return the boolean here if the tag presents
or not, not just ANDing the TCI with the mask which results to:

[  709.412097] test_bpf: #18 LD_VLAN_TAG_PRESENT
[  709.412245] ret 4096 != 1
[  709.412332] ret 4096 != 1
[  709.412333] FAIL (2 times)

Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopowerpc: bpf: Use correct mask while accessing the VLAN tag
Denis Kirjanov [Wed, 25 Jun 2014 17:34:56 +0000 (21:34 +0400)]
powerpc: bpf: Use correct mask while accessing the VLAN tag

To get a full tag (and not just a VID) we should access the TCI
except the VLAN_TAG_PRESENT field (which means that 802.1q header
is present). Also ensure that the VLAN_TAG_PRESENT stay on its place

Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Fri, 27 Jun 2014 17:35:56 +0000 (13:35 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

10 years agoipv6: Fix MLD Query message check
Hangbin Liu [Fri, 27 Jun 2014 01:57:53 +0000 (09:57 +0800)]
ipv6: Fix MLD Query message check

Based on RFC3810 6.2, we also need to check the hop limit and router alert
option besides source address.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoudp: Add MIB counters for rcvbuferrors
James M Leddy [Wed, 25 Jun 2014 21:38:13 +0000 (17:38 -0400)]
udp: Add MIB counters for rcvbuferrors

Add MIB counters for rcvbuferrors in UDP to help diagnose problems.

Signed-off-by: James M Leddy <james.leddy@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Fix the MSI flags
Yijing Wang [Wed, 25 Jun 2014 04:22:56 +0000 (12:22 +0800)]
bnx2x: Fix the MSI flags

MSI-X should use PCI_MSIX_FLAGS not PCI_MSI_FLAGS.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'ath-current' of git://github.com/kvalo/ath
John W. Linville [Thu, 26 Jun 2014 15:39:36 +0000 (11:39 -0400)]
Merge branch 'ath-current' of git://github.com/kvalo/ath

10 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Thu, 26 Jun 2014 04:47:28 +0000 (21:47 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fixes from Steve French:
 "Small set of misc cifs/smb3 fixes"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  [CIFS] fix mount failure with broken pathnames when smb3 mount with mapchars option
  cifs: revalidate mapping prior to satisfying read_iter request with cache=loose
  fs/cifs: fix regression in cifs_create_mf_symlink()

10 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Thu, 26 Jun 2014 04:38:45 +0000 (21:38 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "Various minor fixes"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (gpio-fan) Change name used in hwmon_device_register_with_groups
  hwmon: (emc1403) Fix missing 'select REGMAP_I2C' in Kconfig
  hwmon: (ntc_thermistor) Use the manufacturer name properly
  devicetree: bindings: Document murata vendor prefix
  hwmon: (w83l786ng) Report correct minimum fan speed

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 26 Jun 2014 04:08:24 +0000 (21:08 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix crash in ipvs tot_stats estimator, from Julian Anastasov.

 2) Fix OOPS in nf_nat on netns removal, from Florian Westphal.

 3) Really really really fix locking issues in slip and slcan tty write
    wakeups, from Tyler Hall.

 4) Fix checksum offloading in fec driver, from Fugang Duan.

 5) Off by one in BPF instruction limit test, from Kees Cook.

 6) Need to clear all TSO capability flags when doing software TSO in
    tg3 driver, from Prashant Sreedharan.

 7) Fix memory leak in vlan_reorder_header() error path, from Li
    RongQing.

 8) Fix various bugs in xen-netfront and xen-netback multiqueue support,
    from David Vrabel and Wei Liu.

 9) Fix deadlock in cxgb4 driver, from Li RongQing.

10) Prevent double free of no-cache DST entries, from Eric Dumazet.

11) Bad csum_start handling in skb_segment() leads to crashes when
    forwarding, from Tom Herbert.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits)
  net: fix setting csum_start in skb_segment()
  ipv4: fix dst race in sk_dst_get()
  net: filter: Use kcalloc/kmalloc_array to allocate arrays
  trivial: net: filter: Change kerneldoc parameter order
  trivial: net: filter: Fix typo in comment
  net: allwinner: emac: Add missing free_irq
  cxgb4: use dev_port to identify ports
  xen-netback: bookkeep number of active queues in our own module
  tg3: Change nvram command timeout value to 50ms
  cxgb4: Not need to hold the adap_rcu_lock lock when read adap_rcu_list
  be2net: fix qnq mode detection on VFs
  of: mdio: fixup of_phy_register_fixed_link parsing of new bindings
  at86rf230: fix irq setup
  net: phy: at803x: fix coccinelle warnings
  net/mlx4_core: Fix the error flow when probing with invalid VF configuration
  tulip: Poll link status more frequently for Comet chips
  net: huawei_cdc_ncm: increase command buffer size
  drivers: net: cpsw: fix dual EMAC stall when connected to same switch
  xen-netfront: recreate queues correctly when reconnecting
  xen-netfront: fix oops when disconnected from backend
  ...

10 years agonet: fix setting csum_start in skb_segment()
Tom Herbert [Wed, 25 Jun 2014 19:51:01 +0000 (12:51 -0700)]
net: fix setting csum_start in skb_segment()

Dave Jones reported that a crash is occurring in

csum_partial
tcp_gso_segment
inet_gso_segment
? update_dl_migration
skb_mac_gso_segment
__skb_gso_segment
dev_hard_start_xmit
sch_direct_xmit
__dev_queue_xmit
? dev_hard_start_xmit
dev_queue_xmit
ip_finish_output
? ip_output
ip_output
ip_forward_finish
ip_forward
ip_rcv_finish
ip_rcv
__netif_receive_skb_core
? __netif_receive_skb_core
? trace_hardirqs_on
__netif_receive_skb
netif_receive_skb_internal
napi_gro_complete
? napi_gro_complete
dev_gro_receive
? dev_gro_receive
napi_gro_receive

It looks like a likely culprit is that SKB_GSO_CB()->csum_start is
not set correctly when doing non-scatter gather. We are using
offset as opposed to doffset.

Reported-by: Dave Jones <davej@redhat.com>
Tested-by: Dave Jones <davej@redhat.com>
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 7e2b10c1e52ca ("net: Support for multiple checksums with gso")
Acked-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'nfs-for-3.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Thu, 26 Jun 2014 03:06:06 +0000 (20:06 -0700)]
Merge tag 'nfs-for-3.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:
 "Highlights include:

   - Stable fix for a data corruption case due to incorrect cache
     validation
   - Fix a couple of false positive cache invalidations
   - Fix NFSv4 security negotiation issues"

* tag 'nfs-for-3.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support
  NFS Return -EPERM if no supported or matching SECINFO flavor
  NFS check the return of nfs4_negotiate_security in nfs4_submount
  NFS: Don't mark the data cache as invalid if it has been flushed
  NFS: Clear NFS_INO_REVAL_PAGECACHE when we update the file size
  nfs: Fix cache_validity check in nfs_write_pageuptodate()

10 years agoipv4: fix dst race in sk_dst_get()
Eric Dumazet [Tue, 24 Jun 2014 17:05:11 +0000 (10:05 -0700)]
ipv4: fix dst race in sk_dst_get()

When IP route cache had been removed in linux-3.6, we broke assumption
that dst entries were all freed after rcu grace period. DST_NOCACHE
dst were supposed to be freed from dst_release(). But it appears
we want to keep such dst around, either in UDP sockets or tunnels.

In sk_dst_get() we need to make sure dst refcount is not 0
before incrementing it, or else we might end up freeing a dst
twice.

DST_NOCACHE set on a dst does not mean this dst can not be attached
to a socket or a tunnel.

Then, before actual freeing, we need to observe a rcu grace period
to make sure all other cpus can catch the fact the dst is no longer
usable.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dormando <dormando@rydia.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: filter: Use kcalloc/kmalloc_array to allocate arrays
Tobias Klauser [Tue, 24 Jun 2014 13:33:22 +0000 (15:33 +0200)]
net: filter: Use kcalloc/kmalloc_array to allocate arrays

Use kcalloc/kmalloc_array to make it clear we're allocating arrays. No
integer overflow can actually happen here, since len/flen is guaranteed
to be less than BPF_MAXINSNS (4096). However, this changed makes sure
we're not going to get one if BPF_MAXINSNS were ever increased.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotrivial: net: filter: Change kerneldoc parameter order
Tobias Klauser [Tue, 24 Jun 2014 13:33:21 +0000 (15:33 +0200)]
trivial: net: filter: Change kerneldoc parameter order

Change the order of the parameters to sk_unattached_filter_create() in
the kerneldoc to reflect the order they appear in the actual function.

This fix is only cosmetic, in the generated doc they still appear in the
correct order without the fix.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotrivial: net: filter: Fix typo in comment
Tobias Klauser [Tue, 24 Jun 2014 13:33:20 +0000 (15:33 +0200)]
trivial: net: filter: Fix typo in comment

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: allwinner: emac: Add missing free_irq
Maxime Ripard [Mon, 23 Jun 2014 20:49:40 +0000 (22:49 +0200)]
net: allwinner: emac: Add missing free_irq

If the mdio probe function fails in emac_open, the interrupt we just requested
isn't freed. If emac_open is called again, for example because we try to set up
the interface again, the kernel will oops because the interrupt wasn't properly
released.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: use dev_port to identify ports
Thadeu Lima de Souza Cascardo [Sat, 21 Jun 2014 12:48:08 +0000 (09:48 -0300)]
cxgb4: use dev_port to identify ports

Commit 3f85944fe207d0225ef21a2c0951d4946fc9a95d ("net: Add sysfs file
for port number") introduce dev_port to network devices. cxgb4 adapters
have multiple ports on the same PCI function, and used dev_id to
identify those ports. That use was removed by commit
8c367fcbe6549195d2eb11e62bea233f811aad41 ("cxgb4: Do not set
net_device::dev_id to VI index"), since dev_id should be used only when
devices share the same MAC address.

Using dev_port for cxgb4 allows different ports on the same PCI function
to be identified.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoxen-netback: bookkeep number of active queues in our own module
Wei Liu [Mon, 23 Jun 2014 09:50:17 +0000 (10:50 +0100)]
xen-netback: bookkeep number of active queues in our own module

The original code uses netdev->real_num_tx_queues to bookkeep number of
queues and invokes netif_set_real_num_tx_queues to set the number of
queues. However, netif_set_real_num_tx_queues doesn't allow
real_num_tx_queues to be smaller than 1, which means setting the number
to 0 will not work and real_num_tx_queues is untouched.

This is bogus when xenvif_free is invoked before any number of queues is
allocated. That function needs to iterate through all queues to free
resources. Using the wrong number of queues results in NULL pointer
dereference.

So we bookkeep the number of queues in xen-netback to solve this
problem. This fixes a regression introduced by multiqueue patchset in
3.16-rc1.

There's another bug in original code that the real number of RX queues
is never set. In current Xen multiqueue design, the number of TX queues
and RX queues are in fact the same. We need to set the numbers of TX and
RX queues to the same value.

Also remove xenvif_select_queue and leave queue selection to core
driver, as suggested by David Miller.

Reported-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
CC: Ian Campbell <ian.campbell@citrix.com>
CC: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotg3: Change nvram command timeout value to 50ms
Prashant Sreedharan [Sat, 21 Jun 2014 06:28:15 +0000 (23:28 -0700)]
tg3: Change nvram command timeout value to 50ms

Commit 506724c463fcd63477a5e404728a980b71f80bb7 "tg3: Override clock,
link aware and link idle mode during NVRAM dump" changed the timeout
value for nvram command execution from 100ms to 1ms. But the 1ms
timeout value was only sufficient for nvram read operations but not
write operations for most of the devices supported by tg3 driver.
This patch sets the MAX to 50ms. Also it uses usleep_range instead
of udelay.

Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agohwmon: (gpio-fan) Change name used in hwmon_device_register_with_groups
Julien D'Ascenzio [Wed, 25 Jun 2014 20:00:31 +0000 (22:00 +0200)]
hwmon: (gpio-fan) Change name used in hwmon_device_register_with_groups

Since commit 648cd48c9e566f53c5df30d79857e0937ae13b09
The hwmon name attributes must not include '-' so the name must be
rename from gpio-fan to gpio_fan

Signed-off-by: Julien D'Ascenzio <jdascenzio@yahoo.fr>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Wed, 25 Jun 2014 19:19:01 +0000 (12:19 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "A new set of bug fixes for 3.16, containing patches for seven
  platforms:

  at91:
    - drivers/misc fix for Kconfig PWM symbol
    - correction of several values in DT after conversion to CCF
    - fix at91sam9261/at91sam9261ek mistake in slow crystal vs. slow RC osc

  imx:
    - Use GPIO for card CD/WP on imx51-babbage and eukrea-mbimxsd51,
      because controller base CD/WP is not working in esdhc driver due to
      runtime PM support
    - A couple of random ventana gw5xxx board fixes
    - Add IMX_IPUV3_CORE back to defconfig, which gets lost when moving
      IPUv3 driver out of staging tree
    - Fix enet/fec clock selection on imx6sl
    - Fix display node on imx53-m53evk board
    - A couple of Cubox-i updates from Russell, which were omitted from
      the merge window due to dependency

  integrator:
    - fix an OF-related regression against 3.15

  mvebu:
    - mvebu (v7)
       - Fix broken SoC ID detection
       - Select ARM_CPU_SUSPEND for v7
       - Remove armada38x compatible string (no users yet)
       - Enable Dove SoC in mvebu_v7_defconfig
    - kirkwood
       - Fix phy-connection-type on GuruPlug board

  qcom:
    - enable gsbi driver in defconfig
    - fix section mismatch warning in serial driver

  samsung:
    - use WFI macro in platform_do_lowpower because exynos cpuhotplug
      includes a hardcoded WFI instruction and it causes compile error
      in Thumb-2 mode.
    - fix GIC reg sizes for exynos4 SoCs
    - remove reset timer counter value during boot and resume for mct
      to fix a big jump in printk timestamps
    - fix pm code to check cortex-A9 for another exynos SoCs
    - don't rely on firmware's secondary_cpu_start for mcpm

  sti:
    - Ethernet clocks were wrongly defined for STiH415/416 platforms
    - STiH416 B2020 revision E DTS file name contained uppercase, change to
      lowercase"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (33 commits)
  ARM: at91/dt: sam9261: remove slow RC osc
  ARM: at91/dt: define sam9261ek slow crystal frequency
  ARM: at91/dt: sam9261: correctly define mainck
  ARM: at91/dt: sam9n12: correct PLLA ICPLL and OUT values
  ARM: at91/dt: sam9x5: correct PLLA ICPLL and OUT values
  misc: atmel_pwm: fix Kconfig symbols
  ARM: integrator: fix OF-related regression
  ARM: mvebu: Fix the improper use of the compatible string armada38x using a wildcard
  ARM: dts: kirkwood: fix phy-connection-type for Guruplug
  ARM: EXYNOS: Don't rely on firmware's secondary_cpu_start for mcpm
  ARM: dts: imx51-eukrea-mbimxsd51-baseboard: unbreak esdhc.
  ARM: dts: imx51-babbage: Fix esdhc setup
  ARM: dts: mx5: Move the display out of soc {} node
  ARM: dts: mx5: Fix IPU port node placement
  ARM: mvebu: select ARM_CPU_SUSPEND for Marvell EBU v7 platforms
  ARM: mvebu: Fix broken SoC ID detection
  ARM: imx_v6_v7_defconfig: Enable CONFIG_IMX_IPUV3_CORE
  ARM: multi_v7_defconfig: Add QCOM GSBI driver
  ARM: stih41x: Rename stih416-b2020-revE.dts to stih416-b2020e.dts
  tty: serial: msm: Fix section mismatch warning
  ...

10 years agobrcmfmac: assign chip id and rev in bus interface after brcmf_usb_dlneeded
Arend van Spriel [Fri, 20 Jun 2014 20:19:25 +0000 (22:19 +0200)]
brcmfmac: assign chip id and rev in bus interface after brcmf_usb_dlneeded

The function brcmf_usb_dlneeded() queries the device to obtain the chip
id and revision. So assigning these in bus interface before the call
resulted in chip id and revision being zero. This was introduced by:

   commit 5b8045d484d0ef77d6aa9444023220c5671fa3fe
   Author: Arend van Spriel <arend@broadcom.com>
   Date:   Tue May 27 12:56:23 2014 +0200

       brcmfmac: use asynchronous firmware request in USB

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agomwifiex: fix Tx timeout issue
Amitkumar Karwar [Fri, 20 Jun 2014 18:45:25 +0000 (11:45 -0700)]
mwifiex: fix Tx timeout issue

https://bugzilla.kernel.org/show_bug.cgi?id=70191
https://bugzilla.kernel.org/show_bug.cgi?id=77581

It is observed that sometimes Tx packet is downloaded without
adding driver's txpd header. This results in firmware parsing
garbage data as packet length. Sometimes firmware is unable
to read the packet if length comes out as invalid. This stops
further traffic and timeout occurs.

The root cause is uninitialized fields in tx_info(skb->cb) of
packet used to get garbage values. In this case if
MWIFIEX_BUF_FLAG_REQUEUED_PKT flag is mistakenly set, txpd
header was skipped. This patch makes sure that tx_info is
correctly initialized to fix the problem.

Cc: <stable@vger.kernel.org>
Reported-by: Andrew Wiley <wiley.andrew.j@gmail.com>
Reported-by: Linus Gasser <list@markas-al-nour.org>
Reported-by: Michael Hirsch <hirsch@teufel.de>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Maithili Hinge <maithili@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agoMerge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
Arnd Bergmann [Wed, 25 Jun 2014 18:27:15 +0000 (20:27 +0200)]
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

Merge "First AT91 fixes batch for 3.16" from Nicolas Ferre:

- drivers/misc fix for Kconfig PWM symbol
- correction of several values in DT after conversion to CCF
- fix at91sam9261/at91sam9261ek mistake in slow crystal vs. slow RC osc

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91/dt: sam9261: remove slow RC osc
  ARM: at91/dt: define sam9261ek slow crystal frequency
  ARM: at91/dt: sam9261: correctly define mainck
  ARM: at91/dt: sam9n12: correct PLLA ICPLL and OUT values
  ARM: at91/dt: sam9x5: correct PLLA ICPLL and OUT values
  misc: atmel_pwm: fix Kconfig symbols

10 years agoMerge tag 'mvebu-fixes-3.16' of git://git.infradead.org/linux-mvebu into fixes
Arnd Bergmann [Wed, 25 Jun 2014 13:34:00 +0000 (15:34 +0200)]
Merge tag 'mvebu-fixes-3.16' of git://git.infradead.org/linux-mvebu into fixes

Merge "mvebu fixes for v3.16" from Jason Cooper:

 - mvebu
    - Fix broken SoC ID detection
    - Select ARM_CPU_SUSPEND for v7
    - Remove armada38x compatible string (no users yet)

 - kirkwood
    - Fix phy-connection-type on GuruPlug board

* tag 'mvebu-fixes-3.16' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: Fix the improper use of the compatible string armada38x using a wildcard
  ARM: dts: kirkwood: fix phy-connection-type for Guruplug
  ARM: mvebu: select ARM_CPU_SUSPEND for Marvell EBU v7 platforms
  ARM: mvebu: Fix broken SoC ID detection

10 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
John W. Linville [Wed, 25 Jun 2014 18:22:35 +0000 (14:22 -0400)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth

10 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
John W. Linville [Wed, 25 Jun 2014 18:20:22 +0000 (14:20 -0400)]
Merge branch 'for-john' of git://git./linux/kernel/git/iwlwifi/iwlwifi-fixes

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
John W. Linville [Wed, 25 Jun 2014 18:17:50 +0000 (14:17 -0400)]
Merge git://git./linux/kernel/git/jberg/mac80211

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 25 Jun 2014 17:34:17 +0000 (10:34 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

Pull Ceph fix from Sage Weil:
 "This fixes a corner case for cloned RBD images"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: handle parent_overlap on writes correctly

10 years agoARM: at91/dt: sam9261: remove slow RC osc
Alexandre Belloni [Mon, 23 Jun 2014 06:51:41 +0000 (08:51 +0200)]
ARM: at91/dt: sam9261: remove slow RC osc

The at91sam9261 doesn't actually have a slow RC oscillator, remove it from the
dtsi.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agoARM: at91/dt: define sam9261ek slow crystal frequency
Alexandre Belloni [Sat, 14 Jun 2014 00:10:43 +0000 (02:10 +0200)]
ARM: at91/dt: define sam9261ek slow crystal frequency

Define at91sam9261ek's slow crystal frequencies.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agoARM: at91/dt: sam9261: correctly define mainck
Alexandre Belloni [Fri, 13 Jun 2014 12:02:29 +0000 (14:02 +0200)]
ARM: at91/dt: sam9261: correctly define mainck

mainck (CKGR_MCFR register) is actually using main_osc (CKGR_MOR register).

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agoARM: at91/dt: sam9n12: correct PLLA ICPLL and OUT values
Alexandre Belloni [Fri, 13 Jun 2014 11:28:12 +0000 (13:28 +0200)]
ARM: at91/dt: sam9n12: correct PLLA ICPLL and OUT values

ICPLL can only take 0 or 1, it got mixed with OUT which can be in the [0-3]
range.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agoARM: at91/dt: sam9x5: correct PLLA ICPLL and OUT values
Alexandre Belloni [Fri, 13 Jun 2014 11:25:34 +0000 (13:25 +0200)]
ARM: at91/dt: sam9x5: correct PLLA ICPLL and OUT values

ICPLL can only take 0 or 1, it got mixed with OUT which can be in the [0-3]
range.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agohwmon: (emc1403) Fix missing 'select REGMAP_I2C' in Kconfig
Josef Gajdusek [Wed, 25 Jun 2014 14:21:21 +0000 (16:21 +0200)]
hwmon: (emc1403) Fix missing 'select REGMAP_I2C' in Kconfig

In commit 4cab259f, the emc1403 driver was converted to use regmap but the
necessary Kconfig option was not added.

Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ntc_thermistor) Use the manufacturer name properly
Naveen Krishna Chatradhi [Wed, 25 Jun 2014 06:29:31 +0000 (11:59 +0530)]
hwmon: (ntc_thermistor) Use the manufacturer name properly

Murata Manufacturing Co., Ltd is the vendor for
NTC (Negative Temperature coefficient) based Thermistors.
But, the driver extensively uses "NTC" as the vendor name.

This patch corrects the vendor name also updates the
compatibility strings according to the vendor-prefix.txt

Note: Drivers continue to support the previous compatible strings
but further addition of these compatible strings in device tree
is deprecated.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agodevicetree: bindings: Document murata vendor prefix
Naveen Krishna Chatradhi [Wed, 25 Jun 2014 06:29:30 +0000 (11:59 +0530)]
devicetree: bindings: Document murata vendor prefix

Add Murata Manufacturing Co., Ltd. to the list of device tree
vendor prefixes.

Murata manufactures NTC (Negative Temperature Coefficient) based
Thermistors for small scale applications like Mobiles and PDAs.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (w83l786ng) Report correct minimum fan speed
Axel Lin [Wed, 25 Jun 2014 01:02:32 +0000 (09:02 +0800)]
hwmon: (w83l786ng) Report correct minimum fan speed

Current code is buggy, it shows the current fan speed as minimum fan speed.
Fix up show_fan_reg macro to correctly report fan and fan_min speed.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Wed, 25 Jun 2014 12:44:17 +0000 (05:44 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull powerpc fixes and cleanups from Ben Herrenschmidt:
 "Here are a handful or two of powerpc fixes and simple/trivial
  cleanups.  A bunch of them fix ftrace with the new ABI v2 in Little
  Endian, the rest is a scattering of fairly simple things"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Don't skip ePAPR spin-table CPUs
  powerpc/module: Fix TOC symbol CRC
  powerpc/powernv: Remove OPAL v1 takeover
  powerpc/kmemleak: Do not scan the DART table
  selftests/powerpc: Use the test harness for the TM DSCR test
  powerpc/cell: cbe_thermal.c: Cleaning up a variable is of the wrong type
  powerpc/kprobes: Fix jprobes on ABI v2 (LE)
  powerpc/ftrace: Use pr_fmt() to namespace error messages
  powerpc/ftrace: Fix nop of modules on 64bit LE (ABIv2)
  powerpc/ftrace: Fix inverted check of create_branch()
  powerpc/ftrace: Fix typo in mask of opcode
  powerpc: Add ppc_global_function_entry()
  powerpc/macintosh/smu.c: Fix closing brace followed by if
  powerpc: Remove __arch_swab*
  powerpc: Remove ancient DEBUG_SIG code
  powerpc/kerenl: Enable EEH for IO accessors

10 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Wed, 25 Jun 2014 12:30:20 +0000 (05:30 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull vhost cleanups from Michael S Tsirkin:
 "Two cleanup patches removing code duplication that got introduced by
  changes in rc1.  Not fixing crashes, but I'd rather not carry the
  duplicate code until the next merge window"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost-scsi: don't open-code kvfree
  vhost-net: don't open-code kvfree

10 years agoMerge tag 'trace-fixes-v3.16-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 25 Jun 2014 12:08:09 +0000 (05:08 -0700)]
Merge tag 'trace-fixes-v3.16-rc1-v2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing cleanups and fixes from Steven Rostedt:
 "This includes three patches from Oleg Nesterov.  The first is a fix to
  a race condition that happens between enabling/disabling syscall
  tracepoints and new process creations (the check to go into the ptrace
  path for a process can be set when it shouldn't, or not set when it
  should).  Not a major bug but one that should be fixed and even
  applied to stable.

  The other two patches are cleanup/fixes that are not that critical,
  but for an -rc1 release would be nice to have.  They both deal with
  syscall tracepoints.

  It also includes a patch to introduce a new macro for the
  TRACE_EVENT() format called __field_struct().  Originally, __field()
  was used to record any variable into a trace event, but with the
  addition of setting the "is signed" attribute, the check causes
  anything but a primitive variable to fail to compile.  That is,
  structs and unions can't be used as they once were.  When the "is
  signed" check was introduce there were only primitive variables being
  recorded.  But that will change soon and it was reported that
  __field() causes build failures.

  To solve the __field() issue, __field_struct() is introduced to allow
  trace_events to be able to record complex types too"

* tag 'trace-fixes-v3.16-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Add __field_struct macro for TRACE_EVENT()
  tracing: syscall_regfunc() should not skip kernel threads
  tracing: Change syscall_*regfunc() to check PF_KTHREAD and use for_each_process_thread()
  tracing: Fix syscall_*regfunc() vs copy_process() race

10 years agomisc: atmel_pwm: fix Kconfig symbols
Nicolas Ferre [Wed, 25 Jun 2014 09:33:44 +0000 (11:33 +0200)]
misc: atmel_pwm: fix Kconfig symbols

AT91 symbols AT91SAM9263, AT91SAM9RL, and AT91SAM9G45 do not exist and this
patch changes them to their correct ARCH_* version.
These symbols are chosen instead of the SOC_* ones because this driver is not
converted to DT.
Anyway, the ATMEL_PWM symbol and the associated driver will be removed soon,
during the move to the PWM sub-system.

Reported-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
10 years agopowerpc: Don't skip ePAPR spin-table CPUs
Scott Wood [Wed, 25 Jun 2014 01:15:51 +0000 (20:15 -0500)]
powerpc: Don't skip ePAPR spin-table CPUs

Commit 59a53afe70fd530040bdc69581f03d880157f15a "powerpc: Don't setup
CPUs with bad status" broke ePAPR SMP booting.  ePAPR says that CPUs
that aren't presently running shall have status of disabled, with
enable-method being used to determine whether the CPU can be enabled.

Fix by checking for spin-table, which is currently the only supported
enable-method.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Emil Medve <Emilian.Medve@Freescale.com>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/module: Fix TOC symbol CRC
Laurent Dufour [Tue, 24 Jun 2014 08:53:59 +0000 (10:53 +0200)]
powerpc/module: Fix TOC symbol CRC

The commit 71ec7c55ed91 introduced the magic symbol ".TOC." for ELFv2 ABI.
This symbol is built manually and has no CRC value computed. A zero value
is put in the CRC section to avoid modpost complaining about a missing CRC.
Unfortunately, this breaks the kernel module loading when the kernel is
relocated (kdump case for instance) because of the relocation applied to
the kcrctab values.

This patch compute a CRC value for the TOC symbol which will match the one
compute by the kernel when it is relocated - aka '0 - relocate_start' done in
maybe_relocated called by check_version (module.c).

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/powernv: Remove OPAL v1 takeover
Michael Ellerman [Tue, 24 Jun 2014 07:17:47 +0000 (17:17 +1000)]
powerpc/powernv: Remove OPAL v1 takeover

In commit 27f4488872d9 "Add OPAL takeover from PowerVM" we added support
for "takeover" on OPAL v1 machines.

This was a mode of operation where we would boot under pHyp, and query
for the presence of OPAL. If detected we would then do a special
sequence to take over the machine, and the kernel would end up running
in hypervisor mode.

OPAL v1 was never a supported product, and was never shipped outside
IBM. As far as we know no one is still using it.

Newer versions of OPAL do not use the takeover mechanism. Although the
query for OPAL should be harmless on machines with newer OPAL, we have
seen a machine where it causes a crash in Open Firmware.

The code in early_init_devtree() to copy boot_command_line into cmd_line
was added in commit 817c21ad9a1f "Get kernel command line accross OPAL
takeover", and AFAIK is only used by takeover, so should also be
removed.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agocxgb4: Not need to hold the adap_rcu_lock lock when read adap_rcu_list
Li RongQing [Fri, 20 Jun 2014 09:32:36 +0000 (17:32 +0800)]
cxgb4: Not need to hold the adap_rcu_lock lock when read adap_rcu_list

cxgb4_netdev maybe lead to dead lock, since it uses a spin lock, and be called
in both thread and softirq context, but not disable BH, the lockdep report is
below; In fact, cxgb4_netdev only reads adap_rcu_list with RCU protection, so
not need to hold spin lock again.
=================================
[ INFO: inconsistent lock state ]
3.14.7+ #24 Tainted: G         C O
---------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
radvd/3794 [HC0[0]:SC1[1]:HE1:SE0] takes:
 (adap_rcu_lock){+.?...}, at: [<ffffffffa09989ea>] clip_add+0x2c/0x116 [cxgb4]
{SOFTIRQ-ON-W} state was registered at:
  [<ffffffff810fca81>] __lock_acquire+0x34a/0xe48
  [<ffffffff810fd98b>] lock_acquire+0x82/0x9d
  [<ffffffff815d6ff8>] _raw_spin_lock+0x34/0x43
  [<ffffffffa09989ea>] clip_add+0x2c/0x116 [cxgb4]
  [<ffffffffa0998beb>] cxgb4_inet6addr_handler+0x117/0x12c [cxgb4]
  [<ffffffff815da98b>] notifier_call_chain+0x32/0x5c
  [<ffffffff815da9f9>] __atomic_notifier_call_chain+0x44/0x6e
  [<ffffffff815daa32>] atomic_notifier_call_chain+0xf/0x11
  [<ffffffff815b1356>] inet6addr_notifier_call_chain+0x16/0x18
  [<ffffffffa01f72e5>] ipv6_add_addr+0x404/0x46e [ipv6]
  [<ffffffffa01f8df0>] addrconf_add_linklocal+0x5f/0x95 [ipv6]
  [<ffffffffa01fc3e9>] addrconf_notify+0x632/0x841 [ipv6]
  [<ffffffff815da98b>] notifier_call_chain+0x32/0x5c
  [<ffffffff810e09a1>] __raw_notifier_call_chain+0x9/0xb
  [<ffffffff810e09b2>] raw_notifier_call_chain+0xf/0x11
  [<ffffffff8151b3b7>] call_netdevice_notifiers_info+0x4e/0x56
  [<ffffffff8151b3d0>] call_netdevice_notifiers+0x11/0x13
  [<ffffffff8151c0a6>] netdev_state_change+0x1f/0x38
  [<ffffffff8152f004>] linkwatch_do_dev+0x3b/0x49
  [<ffffffff8152f184>] __linkwatch_run_queue+0x10b/0x144
  [<ffffffff8152f1dd>] linkwatch_event+0x20/0x27
  [<ffffffff810d7bc0>] process_one_work+0x1cb/0x2ee
  [<ffffffff810d7e3b>] worker_thread+0x12e/0x1fc
  [<ffffffff810dd391>] kthread+0xc4/0xcc
  [<ffffffff815dc48c>] ret_from_fork+0x7c/0xb0
irq event stamp: 3388
hardirqs last  enabled at (3388): [<ffffffff810c6c85>]
__local_bh_enable_ip+0xaa/0xd9
hardirqs last disabled at (3387): [<ffffffff810c6c2d>]
__local_bh_enable_ip+0x52/0xd9
softirqs last  enabled at (3288): [<ffffffffa01f1d5b>]
rcu_read_unlock_bh+0x0/0x2f [ipv6]
softirqs last disabled at (3289): [<ffffffff815ddafc>]
do_softirq_own_stack+0x1c/0x30

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(adap_rcu_lock);
  <Interrupt>
    lock(adap_rcu_lock);

 *** DEADLOCK ***

5 locks held by radvd/3794:
 #0:  (sk_lock-AF_INET6){+.+.+.}, at: [<ffffffffa020b85a>]
rawv6_sendmsg+0x74b/0xa4d [ipv6]
 #1:  (rcu_read_lock){.+.+..}, at: [<ffffffff8151ac6b>]
rcu_lock_acquire+0x0/0x29
 #2:  (rcu_read_lock){.+.+..}, at: [<ffffffffa01f4cca>]
rcu_lock_acquire.constprop.16+0x0/0x30 [ipv6]
 #3:  (rcu_read_lock){.+.+..}, at: [<ffffffff810e09b4>]
rcu_lock_acquire+0x0/0x29
 #4:  (rcu_read_lock){.+.+..}, at: [<ffffffffa0998782>]
rcu_lock_acquire.constprop.40+0x0/0x30 [cxgb4]

stack backtrace:
CPU: 7 PID: 3794 Comm: radvd Tainted: G         C O 3.14.7+ #24
Hardware name: Supermicro X7DBU/X7DBU, BIOS 6.00 12/03/2007
 ffffffff81f15990 ffff88012fdc36a8 ffffffff815d0016 0000000000000006
 ffff8800c80dc2a0 ffff88012fdc3708 ffffffff815cc727 0000000000000001
 0000000000000001 ffff880100000000 ffffffff81015b02 ffff8800c80dcb58
Call Trace:
 <IRQ>  [<ffffffff815d0016>] dump_stack+0x4e/0x71
 [<ffffffff815cc727>] print_usage_bug+0x1ec/0x1fd
 [<ffffffff81015b02>] ? save_stack_trace+0x27/0x44
 [<ffffffff810fbfaa>] ? check_usage_backwards+0xa0/0xa0
 [<ffffffff810fc640>] mark_lock+0x11b/0x212
 [<ffffffff810fca0b>] __lock_acquire+0x2d4/0xe48
 [<ffffffff810fbfaa>] ? check_usage_backwards+0xa0/0xa0
 [<ffffffff810fbff6>] ? check_usage_forwards+0x4c/0xa6
 [<ffffffff810c6c8a>] ? __local_bh_enable_ip+0xaf/0xd9
 [<ffffffff810fd98b>] lock_acquire+0x82/0x9d
 [<ffffffffa09989ea>] ? clip_add+0x2c/0x116 [cxgb4]
 [<ffffffffa0998782>] ? rcu_read_unlock+0x23/0x23 [cxgb4]
 [<ffffffff815d6ff8>] _raw_spin_lock+0x34/0x43
 [<ffffffffa09989ea>] ? clip_add+0x2c/0x116 [cxgb4]
 [<ffffffffa09987b0>] ? rcu_lock_acquire.constprop.40+0x2e/0x30 [cxgb4]
 [<ffffffffa0998782>] ? rcu_read_unlock+0x23/0x23 [cxgb4]
 [<ffffffffa09989ea>] clip_add+0x2c/0x116 [cxgb4]
 [<ffffffffa0998beb>] cxgb4_inet6addr_handler+0x117/0x12c [cxgb4]
 [<ffffffff810fd99d>] ? lock_acquire+0x94/0x9d
 [<ffffffff810e09b4>] ? raw_notifier_call_chain+0x11/0x11
 [<ffffffff815da98b>] notifier_call_chain+0x32/0x5c
 [<ffffffff815da9f9>] __atomic_notifier_call_chain+0x44/0x6e
 [<ffffffff815daa32>] atomic_notifier_call_chain+0xf/0x11
 [<ffffffff815b1356>] inet6addr_notifier_call_chain+0x16/0x18
 [<ffffffffa01f72e5>] ipv6_add_addr+0x404/0x46e [ipv6]
 [<ffffffff810fde6a>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffffa01fb634>] addrconf_prefix_rcv+0x385/0x6ea [ipv6]
 [<ffffffffa0207950>] ndisc_rcv+0x9d3/0xd76 [ipv6]
 [<ffffffffa020d536>] icmpv6_rcv+0x592/0x67b [ipv6]
 [<ffffffff810c6c85>] ? __local_bh_enable_ip+0xaa/0xd9
 [<ffffffff810c6c85>] ? __local_bh_enable_ip+0xaa/0xd9
 [<ffffffff810fd8dc>] ? lock_release+0x14e/0x17b
 [<ffffffffa020df97>] ? rcu_read_unlock+0x21/0x23 [ipv6]
 [<ffffffff8150df52>] ? rcu_read_unlock+0x23/0x23
 [<ffffffffa01f4ede>] ip6_input_finish+0x1e4/0x2fc [ipv6]
 [<ffffffffa01f540b>] ip6_input+0x33/0x38 [ipv6]
 [<ffffffffa01f5557>] ip6_mc_input+0x147/0x160 [ipv6]
 [<ffffffffa01f4ba3>] ip6_rcv_finish+0x7c/0x81 [ipv6]
 [<ffffffffa01f5397>] ipv6_rcv+0x3a1/0x3e2 [ipv6]
 [<ffffffff8151ef96>] __netif_receive_skb_core+0x4ab/0x511
 [<ffffffff810fdc94>] ? mark_held_locks+0x71/0x99
 [<ffffffff8151f0c0>] ? process_backlog+0x69/0x15e
 [<ffffffff8151f045>] __netif_receive_skb+0x49/0x5b
 [<ffffffff8151f0cf>] process_backlog+0x78/0x15e
 [<ffffffff8151f571>] ? net_rx_action+0x1a2/0x1cc
 [<ffffffff8151f47b>] net_rx_action+0xac/0x1cc
 [<ffffffff810c69b7>] ? __do_softirq+0xad/0x218
 [<ffffffff810c69ff>] __do_softirq+0xf5/0x218
 [<ffffffff815ddafc>] do_softirq_own_stack+0x1c/0x30
 <EOI>  [<ffffffff810c6bb6>] do_softirq+0x38/0x5d
 [<ffffffffa01f1d5b>] ? ip6_copy_metadata+0x156/0x156 [ipv6]
 [<ffffffff810c6c78>] __local_bh_enable_ip+0x9d/0xd9
 [<ffffffffa01f1d88>] rcu_read_unlock_bh+0x2d/0x2f [ipv6]
 [<ffffffffa01f28b4>] ip6_finish_output2+0x381/0x3d8 [ipv6]
 [<ffffffffa01f49ef>] ip6_finish_output+0x6e/0x73 [ipv6]
 [<ffffffffa01f4a70>] ip6_output+0x7c/0xa8 [ipv6]
 [<ffffffff815b1bfa>] dst_output+0x18/0x1c
 [<ffffffff815b1c9e>] ip6_local_out+0x1c/0x21
 [<ffffffffa01f2489>] ip6_push_pending_frames+0x37d/0x427 [ipv6]
 [<ffffffff81558af8>] ? skb_orphan+0x39/0x39
 [<ffffffffa020b85a>] ? rawv6_sendmsg+0x74b/0xa4d [ipv6]
 [<ffffffffa020ba51>] rawv6_sendmsg+0x942/0xa4d [ipv6]
 [<ffffffff81584cd2>] inet_sendmsg+0x3d/0x66
 [<ffffffff81508930>] __sock_sendmsg_nosec+0x25/0x27
 [<ffffffff8150b0d7>] sock_sendmsg+0x5a/0x7b
 [<ffffffff810fd8dc>] ? lock_release+0x14e/0x17b
 [<ffffffff8116d756>] ? might_fault+0x9e/0xa5
 [<ffffffff8116d70d>] ? might_fault+0x55/0xa5
 [<ffffffff81508cb1>] ? copy_from_user+0x2a/0x2c
 [<ffffffff8150b70c>] ___sys_sendmsg+0x226/0x2d9
 [<ffffffff810fcd25>] ? __lock_acquire+0x5ee/0xe48
 [<ffffffff810fde01>] ? trace_hardirqs_on_caller+0x145/0x1a1
 [<ffffffff8118efcb>] ? slab_free_hook.isra.71+0x50/0x59
 [<ffffffff8115c81f>] ? release_pages+0xbc/0x181
 [<ffffffff810fd99d>] ? lock_acquire+0x94/0x9d
 [<ffffffff81115e97>] ? read_seqcount_begin.constprop.25+0x73/0x90
 [<ffffffff8150c408>] __sys_sendmsg+0x3d/0x5b
 [<ffffffff8150c433>] SyS_sendmsg+0xd/0x19
 [<ffffffff815dc53d>] system_call_fastpath+0x1a/0x1f

Reported-by: Ben Greear <greearb@candelatech.com>
Cc: Casey Leedom <leedom@chelsio.com>
Cc: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoNFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support
Andy Adamson [Thu, 12 Jun 2014 19:02:32 +0000 (15:02 -0400)]
NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support

Fix nfs4_negotiate_security to create an rpc_clnt used to test each SECINFO
returned pseudoflavor. Check credential creation  (and gss_context creation)
which is important for RPC_AUTH_GSS pseudoflavors which can fail for multiple
reasons including mis-configuration.

Don't call nfs4_negotiate in nfs4_submount as it was just called by
nfs4_proc_lookup_mountpoint (nfs4_proc_lookup_common)

Signed-off-by: Andy Adamson <andros@netapp.com>
[Trond: fix corrupt return value from nfs_find_best_sec()]
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agoNFS Return -EPERM if no supported or matching SECINFO flavor
Andy Adamson [Mon, 9 Jun 2014 19:33:20 +0000 (15:33 -0400)]
NFS Return -EPERM if no supported or matching SECINFO flavor

Do not return RPC_AUTH_UNIX if SEINFO reply tests fail. This
prevents an infinite loop of NFS4ERR_WRONGSEC for non RPC_AUTH_UNIX mounts.

Without this patch, a mount with no sec= option to a server
that does not include RPC_AUTH_UNIX in the
SECINFO return can be presented with an attemtp to use RPC_AUTH_UNIX
which will result in an NFS4ERR_WRONG_SEC which will prompt the SECINFO
call which will again try RPC_AUTH_UNIX....

Signed-off-by: Andy Adamson <andros@netapp.com>
Tested-By: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agoNFS check the return of nfs4_negotiate_security in nfs4_submount
Andy Adamson [Mon, 9 Jun 2014 19:33:19 +0000 (15:33 -0400)]
NFS check the return of nfs4_negotiate_security in nfs4_submount

Signed-off-by: Andy Adamson <andros@netapp.com>
Tested-By: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agoNFS: Don't mark the data cache as invalid if it has been flushed
Trond Myklebust [Fri, 20 Jun 2014 17:11:01 +0000 (13:11 -0400)]
NFS: Don't mark the data cache as invalid if it has been flushed

Now that we have functions such as nfs_write_pageuptodate() that use
the cache_validity flags to check if the data cache is valid or not,
it is a little more important to keep the flags in sync with the
state of the data cache.
In particular, we'd like to ensure that if the data cache is empty, we
don't start marking it as needing revalidation.

Reported-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agoNFS: Clear NFS_INO_REVAL_PAGECACHE when we update the file size
Trond Myklebust [Fri, 20 Jun 2014 17:16:38 +0000 (13:16 -0400)]
NFS: Clear NFS_INO_REVAL_PAGECACHE when we update the file size

In nfs_update_inode(), if the change attribute is seen to change on
the server, then we set NFS_INO_REVAL_PAGECACHE in order to make
sure that we check the file size.
However, if we also update the file size in the same function, we
don't need to check it again. So make sure that we clear the
NFS_INO_REVAL_PAGECACHE that was set earlier.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agonfs: Fix cache_validity check in nfs_write_pageuptodate()
Scott Mayhew [Fri, 20 Jun 2014 12:44:42 +0000 (08:44 -0400)]
nfs: Fix cache_validity check in nfs_write_pageuptodate()

NFS_INO_INVALID_DATA cannot be ignored, even if we have a delegation.

We're still having some problems with data corruption when multiple
clients are appending to a file and those clients are being granted
write delegations on open.

To reproduce:

Client A:
vi /mnt/`hostname -s`
while :; do echo "XXXXXXXXXXXXXXX" >>/mnt/file; sleep $(( $RANDOM % 5 )); done

Client B:
vi /mnt/`hostname -s`
while :; do echo "YYYYYYYYYYYYYYY" >>/mnt/file; sleep $(( $RANDOM % 5 )); done

What's happening is that in nfs_update_inode() we're recognizing that
the file size has changed and we're setting NFS_INO_INVALID_DATA
accordingly, but then we ignore the cache_validity flags in
nfs_write_pageuptodate() because we have a delegation.  As a result,
in nfs_updatepage() we're extending the write to cover the full page
even though we've not read in the data to begin with.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: <stable@vger.kernel.org> # v3.11+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
10 years agoMerge git://git.kvack.org/~bcrl/aio-fixes
Linus Torvalds [Tue, 24 Jun 2014 21:00:13 +0000 (14:00 -0700)]
Merge git://git.kvack.org/~bcrl/aio-fixes

Pull aio fixes from Ben LaHaise:
 "These fix a kernel memory disclosure issue (arbitrary kmap() &
  copy_to_user()) revealed in CVE-2014-0206 by changes that were
  introduced in v3.10"

* git://git.kvack.org/~bcrl/aio-fixes:
  aio: fix kernel memory disclosure in io_getevents() introduced in v3.10
  aio: fix aio request leak when events are reaped by userspace

10 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Tue, 24 Jun 2014 20:59:00 +0000 (13:59 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "A number of low impact fixes, the most noticable one is the thumb2
  frame pointer fix.  We also fix a regression caused during this merge
  window with ARM925 CPUs running with caches disabled, and fix a number
  of warnings"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: arm925: ensure assembly sets up writethrough mapping
  ARM: perf: fix compiler warning with gcc 4.6.4 (and tidy code)
  ARM: l2c: fix dependencies on PL310 errata symbols
  ARM: 8069/1: Make thread_save_fp macro aware of THUMB2 mode
  ARM: 8068/1: scoop: Remove unused variable

10 years agoRevert "iwlwifi: remove IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT flag"
Arik Nemtsov [Thu, 8 May 2014 13:17:31 +0000 (16:17 +0300)]
Revert "iwlwifi: remove IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT flag"

This reverts commit dc9a19296a872644f19a06d8eeb5db222d327b41.

3610 cards don't support UAPSD.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
10 years agoiwlwifi: update the 7265 series HW IDs
Oren Givon [Sun, 25 May 2014 13:31:58 +0000 (16:31 +0300)]
iwlwifi: update the 7265 series HW IDs

Add one more 7265 series HW ID.
Edit one existing 7265 series HW ID.

CC: <stable@vger.kernel.org> [3.13+]
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
10 years agoaio: fix kernel memory disclosure in io_getevents() introduced in v3.10
Benjamin LaHaise [Tue, 24 Jun 2014 17:32:51 +0000 (13:32 -0400)]
aio: fix kernel memory disclosure in io_getevents() introduced in v3.10

A kernel memory disclosure was introduced in aio_read_events_ring() in v3.10
by commit a31ad380bed817aa25f8830ad23e1a0480fef797.  The changes made to
aio_read_events_ring() failed to correctly limit the index into
ctx->ring_pages[], allowing an attacked to cause the subsequent kmap() of
an arbitrary page with a copy_to_user() to copy the contents into userspace.
This vulnerability has been assigned CVE-2014-0206.  Thanks to Mateusz and
Petr for disclosing this issue.

This patch applies to v3.12+.  A separate backport is needed for 3.10/3.11.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: Mateusz Guzik <mguzik@redhat.com>
Cc: Petr Matousek <pmatouse@redhat.com>
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: stable@vger.kernel.org
10 years agoaio: fix aio request leak when events are reaped by userspace
Benjamin LaHaise [Tue, 24 Jun 2014 17:12:55 +0000 (13:12 -0400)]
aio: fix aio request leak when events are reaped by userspace

The aio cleanups and optimizations by kmo that were merged into the 3.10
tree added a regression for userspace event reaping.  Specifically, the
reference counts are not decremented if the event is reaped in userspace,
leading to the application being unable to submit further aio requests.
This patch applies to 3.12+.  A separate backport is required for 3.10/3.11.
This issue was uncovered as part of CVE-2014-0206.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: stable@vger.kernel.org
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: Mateusz Guzik <mguzik@redhat.com>
Cc: Petr Matousek <pmatouse@redhat.com>
10 years agonl80211: move set_qos_map command into split state
Johannes Berg [Tue, 10 Jun 2014 12:06:25 +0000 (14:06 +0200)]
nl80211: move set_qos_map command into split state

The non-split wiphy state shouldn't be increased in size
so move the new set_qos_map command into the split if
statement.

Cc: stable@vger.kernel.org (3.14+)
Fixes: fa9ffc745610 ("cfg80211: Add support for QoS mapping")
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
10 years ago[CIFS] fix mount failure with broken pathnames when smb3 mount with mapchars option
Steve French [Mon, 23 Jun 2014 01:38:49 +0000 (20:38 -0500)]
[CIFS] fix mount failure with broken pathnames when smb3 mount with mapchars option

When we SMB3 mounted with mapchars (to allow reserved characters : \ / > < * ?
via the Unicode Windows to POSIX remap range) empty paths
(eg when we open "" to query the root of the SMB3 directory on mount) were not
null terminated so we sent garbarge as a path name on empty paths which caused
SMB2/SMB2.1/SMB3 mounts to fail when mapchars was specified.  mapchars is
particularly important since Unix Extensions for SMB3 are not supported (yet)

Signed-off-by: Steve French <smfrench@gmail.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: David Disseldorp <ddiss@suse.de>
10 years agoARM: integrator: fix OF-related regression
Linus Walleij [Tue, 24 Jun 2014 12:08:07 +0000 (14:08 +0200)]
ARM: integrator: fix OF-related regression

Commit 07e461cd7e73a84f0e3757932b93cc80976fd749
"of: Ensure unique names without sacrificing determinism"
caused a boot failure regression on the Integrator machines.

The problem is probably caused by fiddling too much with
the device tree population in the OF init function, such
as passing the SoC bus device as parent when populating
the device tree.

This patch fixes the problem by:

- Avoiding to explicitly look up the tree root
- Look up devices needed before device population from
  the match only, passing NULL as root
- Passing NULL as root and parent when calling
  of_platform_populate()

After this the Integrators boot again. Tested on
Integrator/AP and Integrator/CP.

Cc: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoARM: mvebu: Fix the improper use of the compatible string armada38x using a wildcard
Gregory CLEMENT [Mon, 23 Jun 2014 14:16:51 +0000 (16:16 +0200)]
ARM: mvebu: Fix the improper use of the compatible string armada38x using a wildcard

Wildcards in compatible strings should be avoid. "marvell,armada38x"
was recently introduced but was not yet used.

The armada 385 SoC is a superset of the armada 380 SoC (with more CPUs
and more PCIe slots). So this patch replaces the use of
"marvell,armada38x" by the "marvell,armada380" string.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Link: https://lkml.kernel.org/r/1403533011-21339-1-git-send-email-gregory.clement@free-electrons.com
Acked-by: Andrew Lunn <andrew@lunn.ch>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
10 years agoiwlwifi: mvm: rework sched scan channel configuration
Eliad Peller [Mon, 26 May 2014 15:44:35 +0000 (18:44 +0300)]
iwlwifi: mvm: rework sched scan channel configuration

The current sched scan channel configuration code
configures all the supported channels for scanning.

However, this can result in SYSASSERT in some cases,
when the configured channel is disabled.

Instead, configure only the channels given in the
req struct, and set the channel_count field appropriately.

While on it, change the code to use channel->hw_value
instead of recalculating the channel number.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
10 years agopowerpc/kmemleak: Do not scan the DART table
Catalin Marinas [Fri, 13 Jun 2014 08:44:21 +0000 (09:44 +0100)]
powerpc/kmemleak: Do not scan the DART table

The DART table allocation is registered to kmemleak via the
memblock_alloc_base() call. However, the DART table is later unmapped
and dart_tablebase VA no longer accessible. This patch tells kmemleak
not to scan this block and avoid an unhandled paging request.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agoselftests/powerpc: Use the test harness for the TM DSCR test
Michael Ellerman [Fri, 13 Jun 2014 11:16:04 +0000 (21:16 +1000)]
selftests/powerpc: Use the test harness for the TM DSCR test

This gives us standardised success/failure output and also handles
killing the test if it runs forever (2 minutes).

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/cell: cbe_thermal.c: Cleaning up a variable is of the wrong type
Rickard Strandqvist [Sat, 14 Jun 2014 16:25:11 +0000 (18:25 +0200)]
powerpc/cell: cbe_thermal.c: Cleaning up a variable is of the wrong type

This variable is of the wrong type, everywhere it is used it
should be an unsigned int rather than a int.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/kprobes: Fix jprobes on ABI v2 (LE)
Michael Ellerman [Mon, 23 Jun 2014 03:23:31 +0000 (13:23 +1000)]
powerpc/kprobes: Fix jprobes on ABI v2 (LE)

In commit 721aeaa9 "Build little endian ppc64 kernel with ABIv2", we
missed some updates required in the kprobes code to make jprobes work
when the kernel is built with ABI v2.

Firstly update arch_deref_entry_point() to do the right thing. Now that
we have added ppc_global_function_entry() we can just always use that, it
will do the right thing for 32 & 64 bit and ABI v1 & v2.

Secondly we need to update the code that sets up the register state before
calling the jprobe handler. On ABI v1 we setup r2 to hold the TOC, on ABI
v2 we need to populate r12 with the function entry point address.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/ftrace: Use pr_fmt() to namespace error messages
Michael Ellerman [Tue, 17 Jun 2014 06:15:36 +0000 (16:15 +1000)]
powerpc/ftrace: Use pr_fmt() to namespace error messages

The printks() in our ftrace code have no prefix, so they appear on the
console with very little context, eg:

  Branch out of range

Use pr_fmt() & pr_err() to add a prefix. While we're at it, collapse a
few split lines that don't need to be, and add a missing newline to one
message.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/ftrace: Fix nop of modules on 64bit LE (ABIv2)
Michael Ellerman [Tue, 17 Jun 2014 06:15:35 +0000 (16:15 +1000)]
powerpc/ftrace: Fix nop of modules on 64bit LE (ABIv2)

There is a bug in the handling of the function entry when we are nopping
out a branch from a module in ftrace.

We compare the result of module_trampoline_target() with the value of
ppc_function_entry(), and expect them to be true. But they never will
be.

module_trampoline_target() will always return the global entry point of
the function, whereas ppc_function_entry() will always return the local.

Fix it by using the newly added ppc_global_function_entry().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/ftrace: Fix inverted check of create_branch()
Michael Ellerman [Tue, 17 Jun 2014 06:15:34 +0000 (16:15 +1000)]
powerpc/ftrace: Fix inverted check of create_branch()

In commit 24a1bdc35, "Fix ABIv2 issues with __ftrace_make_call", Anton
changed the logic that creates and patches the branch, and added a
thinko in the check of create_branch(). create_branch() returns the
instruction that was generated, so if we get zero then it succeeded.

The result is we can't ftrace modules:

  Branch out of range
  WARNING: at ../kernel/trace/ftrace.c:1638
  ftrace failed to modify [<d000000004ba001c>] fuse_req_init_context+0x1c/0x90 [fuse]

We should probably fix patch_instruction() to do that check and make the
API saner, but that's a separate patch. For now just invert the test.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/ftrace: Fix typo in mask of opcode
Michael Ellerman [Tue, 17 Jun 2014 06:15:33 +0000 (16:15 +1000)]
powerpc/ftrace: Fix typo in mask of opcode

In commit 24a1bdc35, "Fix ABIv2 issues with __ftrace_make_call", Anton
changed the logic that checks for the expected code sequence when
patching a module.

We missed the typo in the mask, 0xffff00000 should be 0xffff0000, which
has the effect of making the test always true.

That makes it impossible to ftrace against modules, eg:

  Unexpected call sequence: 48000008 e8410018
  WARNING: at ../kernel/trace/ftrace.c:1638
  ftrace failed to modify [<d000000007cf001c>] rng_dev_open+0x1c/0x70 [rng_core]

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc: Add ppc_global_function_entry()
Michael Ellerman [Tue, 17 Jun 2014 06:15:32 +0000 (16:15 +1000)]
powerpc: Add ppc_global_function_entry()

ABIv2 has the concept of a global and local entry point to a function.
In most cases we are interested in the local entry point, and so that is
what ppc_function_entry() returns.

However we have a case in the ftrace code where we want the global entry
point, and there may be other places we need it too. Rather than special
casing each, add an accessor.

For ABIv1 and 32-bit there is only a single entry point, so we return
that. That means it's safe for the caller to use this without also
checking the ABI version.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/macintosh/smu.c: Fix closing brace followed by if
Rasmus Villemoes [Fri, 20 Jun 2014 19:44:27 +0000 (21:44 +0200)]
powerpc/macintosh/smu.c: Fix closing brace followed by if

A closing brace followed by "if" is almost certainly a mistake. Maybe
"else if" was meant, but in this case it doesn't really matter.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc: Remove __arch_swab*
Benjamin Herrenschmidt [Tue, 24 Jun 2014 02:28:56 +0000 (12:28 +1000)]
powerpc: Remove __arch_swab*

The generic code uses gcc built-ins which work fine so there's no benefit
in implementing our own anymore.

We can't completely remove the ld/st_le* functions as some historical
cruft still uses them, but that's next on the radar

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc: Remove ancient DEBUG_SIG code
Michael Ellerman [Mon, 23 Jun 2014 04:17:47 +0000 (14:17 +1000)]
powerpc: Remove ancient DEBUG_SIG code

We have some compile-time disabled debug code in signal_xx.c. It's from
some ancient time BG, almost certainly part of the original port, given
the very similar code on other arches.

The show_unhandled_signal logic, added in d0c3d534a438 (2.6.24) is
cleaner and prints more useful information, so drop the debug code.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agopowerpc/kerenl: Enable EEH for IO accessors
Gavin Shan [Mon, 23 Jun 2014 00:56:22 +0000 (10:56 +1000)]
powerpc/kerenl: Enable EEH for IO accessors

In arch/powerpc/kernel/iomap.c, lots of IO reading accessors missed
to check EEH error as Ben pointed. The patch fixes it.

For the writing accessors, we change the called functions only for
making them look similar to the reading counterparts.

Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
10 years agoMerge tag 'compress-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 24 Jun 2014 00:05:28 +0000 (17:05 -0700)]
Merge tag 'compress-3.16-rc3' of git://git./linux/kernel/git/gregkh/driver-core

Pull compress bugfixes from Greg KH:
 "Here are two bugfixes for some compression functions that resolve some
  errors when uncompressing some pathalogical data.  Both were found by
  Don A  Bailey"

* tag 'compress-3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  lz4: ensure length does not wrap
  lzo: properly check for overruns