cascardo/linux.git
7 years agoMerge branch 'act_ife-fixes'
David S. Miller [Tue, 27 Sep 2016 13:53:30 +0000 (09:53 -0400)]
Merge branch 'act_ife-fixes'

Yotam Gigi says:

====================
Fix tc-ife bugs

This patch-set contains two bugfixes in the tc-ife action, one fixing some
random behaviour in encode side, and one fixing the decode side packet
parsing logic.

v2->v3
 - Fix the encode side instead of the decode side
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoact_ife: Fix false encoding
Yotam Gigi [Mon, 26 Sep 2016 10:45:26 +0000 (13:45 +0300)]
act_ife: Fix false encoding

On ife encode side, the action stores the different tlvs inside the ife
header, where each tlv length field should refer to the length of the
whole tlv (without additional padding) and not just the data length.

On ife decode side, the action iterates over the tlvs in the ife header
and parses them one by one, where in each iteration the current pointer is
advanced according to the tlv size.

Before, the encoding encoded only the data length inside the tlv, which led
to false parsing of ife the header. In addition, due to the fact that the
loop counter was unsigned, it could lead to infinite parsing loop.

This fix changes the loop counter to be signed and fixes the encoding to
take into account the tlv type and size.

Fixes: 28a10c426e81 ("net sched: fix encoding to use real length")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoact_ife: Fix external mac header on encode
Yotam Gigi [Mon, 26 Sep 2016 10:45:25 +0000 (13:45 +0300)]
act_ife: Fix external mac header on encode

On ife encode side, external mac header is copied from the original packet
and may be overridden if the user requests. Before, the mac header copy
was done from memory region that might not be accessible anymore, as
skb_cow_head might free it and copy the packet. This led to random values
in the external mac header once the values were not set by user.

This fix takes the internal mac header from the packet, after the call to
skb_cow_head.

Fixes: ef6980b6becb ("net sched: introduce IFE action")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoVSOCK: Don't dec ack backlog twice for rejected connections
Jorgen Hansen [Tue, 27 Sep 2016 06:59:53 +0000 (23:59 -0700)]
VSOCK: Don't dec ack backlog twice for rejected connections

If a pending socket is marked as rejected, we will decrease the
sk_ack_backlog twice. So don't decrement it for rejected sockets
in vsock_pending_work().

Testing of the rejected socket path was done through code
modifications.

Reported-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: Adit Ranadive <aditr@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoRevert "net: ethernet: bcmgenet: use phydev from struct net_device"
Florian Fainelli [Sat, 24 Sep 2016 19:58:30 +0000 (12:58 -0700)]
Revert "net: ethernet: bcmgenet: use phydev from struct net_device"

This reverts commit 62469c76007e ("net: ethernet: bcmgenet: use phydev
from struct net_device") because it causes GENETv1/2/3 adapters to
expose the following behavior after an ifconfig down/up sequence:

PING fainelli-linux (10.112.156.244): 56 data bytes
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.352 ms
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.472 ms (DUP!)
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.496 ms (DUP!)
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.517 ms (DUP!)
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.536 ms (DUP!)
64 bytes from 10.112.156.244: seq=1 ttl=61 time=1.557 ms (DUP!)
64 bytes from 10.112.156.244: seq=1 ttl=61 time=752.448 ms (DUP!)

This was previously fixed by commit 5dbebbb44a6a ("net: bcmgenet:
Software reset EPHY after power on") but the commit we are reverting was
essentially making this previous commit void, here is why.

Without commit 62469c76007e we would have the following scenario after
an ifconfig down then up sequence:

- bcmgenet_open() calls bcmgenet_power_up() to make sure the PHY is
  initialized *before* we get to initialize the UniMAC, this is
  critical to ensure the PHY is in a correct state, priv->phydev is
  valid, this code executes fine

- second time from bcmgenet_mii_probe(), through the normal
  phy_init_hw() call (which arguably could be optimized out)

Everything is fine in that case. With commit 62469c76007e, we would have
the following scenario to happen after an ifconfig down then up
sequence:

- bcmgenet_close() calls phy_disonnect() which makes dev->phydev become
  NULL

- when bcmgenet_open() executes again and calls bcmgenet_mii_reset() from
  bcmgenet_power_up() to initialize the internal PHY, the NULL check
  becomes true, so we do not reset the PHY, yet we keep going on and
  initialize the UniMAC, causing MAC activity to occur

- we call bcmgenet_mii_reset() from bcmgenet_mii_probe(), but this is
  too late, the PHY is botched, and causes the above bogus pings/packets
  transmission/reception to occur

Reported-by: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'fec-align'
David S. Miller [Tue, 27 Sep 2016 11:39:38 +0000 (07:39 -0400)]
Merge branch 'fec-align'

Eric Nelson says:

====================
net: fec: updates to align IP header

This patch series is the outcome of investigation into very high
numbers of alignment faults on kernel 4.1.33 from the linux-fslc
tree:
    https://github.com/freescale/linux-fslc/tree/4.1-1.0.x-imx

The first two patches remove support for the receive accelerator (RACC) from
the i.MX25 and i.MX27 SoCs which don't support the function.

The third patch enables hardware alignment of the ethernet packet payload
(and especially the IP header) to prevent alignment faults in the IP stack.

Testing on i.MX6UL on the 4.1.33 kernel showed that this patch removed
on the order of 70k alignment faults during a 100MiB transfer using
wget.

Testing on an i.MX6Q (SABRE Lite) board on net-next (4.8.0-rc7) showed
a much more modest improvement from 10's of faults, and it's not clear
why that's the case.
====================

Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fec: align IP header in hardware
Eric Nelson [Sat, 24 Sep 2016 14:42:19 +0000 (07:42 -0700)]
net: fec: align IP header in hardware

The FEC receive accelerator (RACC) supports shifting the data payload of
received packets by 16-bits, which aligns the payload (IP header) on a
4-byte boundary, which is, if not required, at least strongly suggested
by the Linux networking layer.

Without this patch, a huge number of alignment faults will be taken by the
IP stack, as seen in /proc/cpu/alignment:

~/$ cat /proc/cpu/alignment
User: 0
System: 72645 (inet_gro_receive+0x104/0x27c)
Skipped: 0
Half: 0
Word: 0
DWord: 0
Multi: 72645
User faults: 3 (fixup+warn)

This patch was suggested by Andrew Lunn in this message to linux-netdev:
http://marc.info/?l=linux-arm-kernel&m=147465452108384&w=2

and adapted from a patch by Russell King from 2014:
http://git.arm.linux.org.uk/cgit/linux-arm.git/commit/?id=70d8a8a

Signed-off-by: Eric Nelson <eric@nelint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fec: remove QUIRK_HAS_RACC from i.mx27
Eric Nelson [Sat, 24 Sep 2016 14:42:18 +0000 (07:42 -0700)]
net: fec: remove QUIRK_HAS_RACC from i.mx27

According to the i.MX27 reference manual, this SoC does not have support
for the receive accelerator (RACC) register at offset 0x1C4.

http://cache.nxp.com/files/32bit/doc/ref_manual/MCIMX27RM.pdf

Signed-off-by: Eric Nelson <eric@nelint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fec: remove QUIRK_HAS_RACC from i.mx25
Eric Nelson [Sat, 24 Sep 2016 14:42:17 +0000 (07:42 -0700)]
net: fec: remove QUIRK_HAS_RACC from i.mx25

According to the i.MX25 reference manual, this SoC does not have support
for the receive accelerator (RACC) register at offset 0x1C4.

http://www.nxp.com/files/dsp/doc/ref_manual/IMX25RM.pdf

Signed-off-by: Eric Nelson <eric@nelint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route
Nikolay Aleksandrov [Sun, 25 Sep 2016 21:08:31 +0000 (23:08 +0200)]
ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route

Since the commit below the ipmr/ip6mr rtnl_unicast() code uses the portid
instead of the previous dst_pid which was copied from in_skb's portid.
Since the skb is new the portid is 0 at that point so the packets are sent
to the kernel and we get scheduling while atomic or a deadlock (depending
on where it happens) by trying to acquire rtnl two times.
Also since this is RTM_GETROUTE, it can be triggered by a normal user.

Here's the sleeping while atomic trace:
[ 7858.212557] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:620
[ 7858.212748] in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper/0
[ 7858.212881] 2 locks held by swapper/0/0:
[ 7858.213013]  #0:  (((&mrt->ipmr_expire_timer))){+.-...}, at: [<ffffffff810fbbf5>] call_timer_fn+0x5/0x350
[ 7858.213422]  #1:  (mfc_unres_lock){+.....}, at: [<ffffffff8161e005>] ipmr_expire_process+0x25/0x130
[ 7858.213807] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.0-rc7+ #179
[ 7858.213934] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 7858.214108]  0000000000000000 ffff88005b403c50 ffffffff813a7804 0000000000000000
[ 7858.214412]  ffffffff81a1338e ffff88005b403c78 ffffffff810a4a72 ffffffff81a1338e
[ 7858.214716]  000000000000026c 0000000000000000 ffff88005b403ca8 ffffffff810a4b9f
[ 7858.215251] Call Trace:
[ 7858.215412]  <IRQ>  [<ffffffff813a7804>] dump_stack+0x85/0xc1
[ 7858.215662]  [<ffffffff810a4a72>] ___might_sleep+0x192/0x250
[ 7858.215868]  [<ffffffff810a4b9f>] __might_sleep+0x6f/0x100
[ 7858.216072]  [<ffffffff8165bea3>] mutex_lock_nested+0x33/0x4d0
[ 7858.216279]  [<ffffffff815a7a5f>] ? netlink_lookup+0x25f/0x460
[ 7858.216487]  [<ffffffff8157474b>] rtnetlink_rcv+0x1b/0x40
[ 7858.216687]  [<ffffffff815a9a0c>] netlink_unicast+0x19c/0x260
[ 7858.216900]  [<ffffffff81573c70>] rtnl_unicast+0x20/0x30
[ 7858.217128]  [<ffffffff8161cd39>] ipmr_destroy_unres+0xa9/0xf0
[ 7858.217351]  [<ffffffff8161e06f>] ipmr_expire_process+0x8f/0x130
[ 7858.217581]  [<ffffffff8161dfe0>] ? ipmr_net_init+0x180/0x180
[ 7858.217785]  [<ffffffff8161dfe0>] ? ipmr_net_init+0x180/0x180
[ 7858.217990]  [<ffffffff810fbc95>] call_timer_fn+0xa5/0x350
[ 7858.218192]  [<ffffffff810fbbf5>] ? call_timer_fn+0x5/0x350
[ 7858.218415]  [<ffffffff8161dfe0>] ? ipmr_net_init+0x180/0x180
[ 7858.218656]  [<ffffffff810fde10>] run_timer_softirq+0x260/0x640
[ 7858.218865]  [<ffffffff8166379b>] ? __do_softirq+0xbb/0x54f
[ 7858.219068]  [<ffffffff816637c8>] __do_softirq+0xe8/0x54f
[ 7858.219269]  [<ffffffff8107a948>] irq_exit+0xb8/0xc0
[ 7858.219463]  [<ffffffff81663452>] smp_apic_timer_interrupt+0x42/0x50
[ 7858.219678]  [<ffffffff816625bc>] apic_timer_interrupt+0x8c/0xa0
[ 7858.219897]  <EOI>  [<ffffffff81055f16>] ? native_safe_halt+0x6/0x10
[ 7858.220165]  [<ffffffff810d64dd>] ? trace_hardirqs_on+0xd/0x10
[ 7858.220373]  [<ffffffff810298e3>] default_idle+0x23/0x190
[ 7858.220574]  [<ffffffff8102a20f>] arch_cpu_idle+0xf/0x20
[ 7858.220790]  [<ffffffff810c9f8c>] default_idle_call+0x4c/0x60
[ 7858.221016]  [<ffffffff810ca33b>] cpu_startup_entry+0x39b/0x4d0
[ 7858.221257]  [<ffffffff8164f995>] rest_init+0x135/0x140
[ 7858.221469]  [<ffffffff81f83014>] start_kernel+0x50e/0x51b
[ 7858.221670]  [<ffffffff81f82120>] ? early_idt_handler_array+0x120/0x120
[ 7858.221894]  [<ffffffff81f8243f>] x86_64_start_reservations+0x2a/0x2c
[ 7858.222113]  [<ffffffff81f8257c>] x86_64_start_kernel+0x13b/0x14a

Fixes: 2942e9005056 ("[RTNETLINK]: Use rtnl_unicast() for rtnetlink unicasts")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoip6_gre: fix flowi6_proto value in ip6gre_xmit_other()
Lance Richardson [Fri, 23 Sep 2016 19:50:29 +0000 (15:50 -0400)]
ip6_gre: fix flowi6_proto value in ip6gre_xmit_other()

Similar to commit 3be07244b733 ("ip6_gre: fix flowi6_proto value in
xmit path"), set flowi6_proto to IPPROTO_GRE for output route lookup.

Up until now, ip6gre_xmit_other() has set flowi6_proto to a bogus value.
This affected output route lookup for packets sent on an ip6gretap device
in cases where routing was dependent on the value of flowi6_proto.

Since the correct proto is already set in the tunnel flowi6 template via
commit 252f3f5a1189 ("ip6_gre: Set flowi6_proto as IPPROTO_GRE in xmit
path."), simply delete the line setting the incorrect flowi6_proto value.

Suggested-by: Jiri Benc <jbenc@redhat.com>
Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Lance Richardson <lrichard@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: fix a compile error in DBGUNDO()
Eric Dumazet [Fri, 23 Sep 2016 00:54:00 +0000 (17:54 -0700)]
tcp: fix a compile error in DBGUNDO()

If DBGUNDO() is enabled (FASTRETRANS_DEBUG > 1), a compile
error will happen, since inet6_sk(sk)->daddr became sk->sk_v6_daddr

Fixes: efe4208f47f9 ("ipv6: make lookups simpler and faster")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: fix wrong checksum calculation on MTU probing
Douglas Caetano dos Santos [Thu, 22 Sep 2016 18:52:04 +0000 (15:52 -0300)]
tcp: fix wrong checksum calculation on MTU probing

With TCP MTU probing enabled and offload TX checksumming disabled,
tcp_mtu_probe() calculated the wrong checksum when a fragment being copied
into the probe's SKB had an odd length. This was caused by the direct use
of skb_copy_and_csum_bits() to calculate the checksum, as it pads the
fragment being copied, if needed. When this fragment was not the last, a
subsequent call used the previous checksum without considering this
padding.

The effect was a stale connection in one way, as even retransmissions
wouldn't solve the problem, because the checksum was never recalculated for
the full SKB length.

Signed-off-by: Douglas Caetano dos Santos <douglascs@taghos.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'linux-can-fixes-for-4.8-20160922' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Fri, 23 Sep 2016 11:13:55 +0000 (07:13 -0400)]
Merge tag 'linux-can-fixes-for-4.8-20160922' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-09-22

this is a pull request of one patch for the upcoming linux-4.8 release.

The patch by Sergei Miroshnichenko fixes a potential deadlock in the generic
CAN device code that cann occour after a bus-off.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosch_sfb: keep backlog updated with qlen
WANG Cong [Sun, 18 Sep 2016 23:22:48 +0000 (16:22 -0700)]
sch_sfb: keep backlog updated with qlen

Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosch_qfq: keep backlog updated with qlen
WANG Cong [Sun, 18 Sep 2016 23:22:47 +0000 (16:22 -0700)]
sch_qfq: keep backlog updated with qlen

Reported-by: Stas Nichiporovich <stasn77@gmail.com>
Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Thu, 22 Sep 2016 16:04:49 +0000 (09:04 -0700)]
Merge tag 'media/v4.8-7' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - several fixes for new drivers added for Kernel 4.8 addition (cec
   core, pulse8 cec driver and Mediatek vcodec)

 - a regression fix for cx23885 and saa7134 drivers

 - an important fix for rcar-fcp, making rcar_fcp_enable() return 0 on
   success

* tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (25 commits)
  [media] cx23885/saa7134: assign q->dev to the PCI device
  [media] rcar-fcp: Make sure rcar_fcp_enable() returns 0 on success
  [media] cec: fix ioctl return code when not registered
  [media] cec: don't Feature Abort broadcast msgs when unregistered
  [media] vcodec:mediatek: Refine VP8 encoder driver
  [media] vcodec:mediatek: Refine H264 encoder driver
  [media] vcodec:mediatek: change H264 profile default to profile high
  [media] vcodec:mediatek: Add timestamp and timecode copy for V4L2 Encoder
  [media] vcodec:mediatek: Fix visible_height larger than coded_height issue in s_fmt_out
  [media] vcodec:mediatek: Fix fops_vcodec_release flow for V4L2 Encoder
  [media] vcodec:mediatek:code refine for v4l2 Encoder driver
  [media] cec-funcs.h: add missing vendor-specific messages
  [media] cec-edid: check for IEEE identifier
  [media] pulse8-cec: fix error handling
  [media] pulse8-cec: set correct Signal Free Time
  [media] mtk-vcodec: add HAS_DMA dependency
  [media] cec: ignore messages when log_addr_mask == 0
  [media] cec: add item to TODO
  [media] cec: set unclaimed addresses to CEC_LOG_ADDR_INVALID
  [media] cec: add CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK flag
  ...

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 22 Sep 2016 15:49:25 +0000 (08:49 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "Mostly small bits scattered all over the place, which is usually how
  things go this late in the -rc series.

   1) Proper driver init device resets in bnx2, from Baoquan He.

   2) Fix accounting overflow in __tcp_retransmit_skb(),
      sk_forward_alloc, and ip_idents_reserve, from Eric Dumazet.

   3) Fix crash in bna driver ethtool stats handling, from Ivan Vecera.

   4) Missing check of skb_linearize() return value in mac80211, from
      Johannes Berg.

   5) Endianness fix in nf_table_trace dumps, from Liping Zhang.

   6) SSN comparison fix in SCTP, from Marcelo Ricardo Leitner.

   7) Update DSA and b44 MAINTAINERS entries.

   8) Make input path of vti6 driver work again, from Nicolas Dichtel.

   9) Off-by-one in mlx4, from Sebastian Ott.

  10) Fix fallback route lookup handling in ipv6, from Vincent Bernat.

  11) Fix stack corruption on probe in qed driver, from Yuval Mintz.

  12) PHY init fixes in r8152 from Hayes Wang.

  13) Missing SKB free in irda_accept error path, from Phil Turnbull"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits)
  tcp: properly account Fast Open SYN-ACK retrans
  tcp: fix under-accounting retransmit SNMP counters
  MAINTAINERS: Update b44 maintainer.
  net: get rid of an signed integer overflow in ip_idents_reserve()
  net/mlx4_core: Fix to clean devlink resources
  net: can: ifi: Configure transmitter delay
  vti6: fix input path
  ipmr, ip6mr: return lastuse relative to now
  r8152: disable ALDPS and EEE before setting PHY
  r8152: remove r8153_enable_eee
  r8152: move PHY settings to hw_phy_cfg
  r8152: move enabling PHY
  r8152: move some functions
  cxgb4/cxgb4vf: Allocate more queues for 25G and 100G adapter
  qed: Fix stack corruption on probe
  MAINTAINERS: Add an entry for the core network DSA code
  net: ipv6: fallback to full lookup if table lookup is unsuitable
  net/mlx5: E-Switch, Handle mode change failures
  net/mlx5: E-Switch, Fix error flow in the SRIOV e-switch init code
  net/mlx5: Fix flow counter bulk command out mailbox allocation
  ...

7 years agocan: dev: fix deadlock reported after bus-off
Sergei Miroshnichenko [Wed, 7 Sep 2016 13:51:12 +0000 (16:51 +0300)]
can: dev: fix deadlock reported after bus-off

A timer was used to restart after the bus-off state, leading to a
relatively large can_restart() executed in an interrupt context,
which in turn sets up pinctrl. When this happens during system boot,
there is a high probability of grabbing the pinctrl_list_mutex,
which is locked already by the probe() of other device, making the
kernel suspect a deadlock condition [1].

To resolve this issue, the restart_timer is replaced by a delayed
work.

[1] https://github.com/victronenergy/venus/issues/24

Signed-off-by: Sergei Miroshnichenko <sergeimir@emcraft.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agotcp: properly account Fast Open SYN-ACK retrans
Yuchung Cheng [Wed, 21 Sep 2016 23:16:15 +0000 (16:16 -0700)]
tcp: properly account Fast Open SYN-ACK retrans

Since the TFO socket is accepted right off SYN-data, the socket
owner can call getsockopt(TCP_INFO) to collect ongoing SYN-ACK
retransmission or timeout stats (i.e., tcpi_total_retrans,
tcpi_retransmits). Currently those stats are only updated
upon handshake completes. This patch fixes it.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: fix under-accounting retransmit SNMP counters
Yuchung Cheng [Wed, 21 Sep 2016 23:16:14 +0000 (16:16 -0700)]
tcp: fix under-accounting retransmit SNMP counters

This patch fixes these under-accounting SNMP rtx stats
LINUX_MIB_TCPFORWARDRETRANS
LINUX_MIB_TCPFASTRETRANS
LINUX_MIB_TCPSLOWSTARTRETRANS
when retransmitting TSO packets

Fixes: 10d3be569243 ("tcp-tso: do not split TSO packets at retransmit time")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
David S. Miller [Thu, 22 Sep 2016 06:56:23 +0000 (02:56 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2016-09-21

1) Propagate errors on security context allocation.
   From Mathias Krause.

2) Fix inbound policy checks for inter address family tunnels.
   From Thomas Zeitlhofer.

3) Fix an old memory leak on aead algorithm usage.
   From Ilan Tayari.

4) A recent patch fixed a possible NULL pointer dereference
   but broke the vti6 input path.
   Fix from Nicolas Dichtel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'linux-can-fixes-for-4.8-20160921' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 22 Sep 2016 06:47:46 +0000 (02:47 -0400)]
Merge tag 'linux-can-fixes-for-4.8-20160921' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-09-21

this is another pull request of one patch for the upcoming linux-4.8 release.

Marek Vasut fixes the CAN-FD bit rate switch in the ifi driver by configuring
the transmitter delay.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Update b44 maintainer.
Michael Chan [Wed, 21 Sep 2016 03:33:15 +0000 (23:33 -0400)]
MAINTAINERS: Update b44 maintainer.

Taking over as maintainer since Gary Zambrano is no longer working
for Broadcom.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: get rid of an signed integer overflow in ip_idents_reserve()
Eric Dumazet [Wed, 21 Sep 2016 01:06:17 +0000 (18:06 -0700)]
net: get rid of an signed integer overflow in ip_idents_reserve()

Jiri Pirko reported an UBSAN warning happening in ip_idents_reserve()

[] UBSAN: Undefined behaviour in ./arch/x86/include/asm/atomic.h:156:11
[] signed integer overflow:
[] -2117905507 + -695755206 cannot be represented in type 'int'

Since we do not have uatomic_add_return() yet, use atomic_cmpxchg()
so that the arithmetics can be done using unsigned int.

Fixes: 04ca6973f7c1 ("ip: make IP identifiers less predictable")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx4_core: Fix to clean devlink resources
Kamal Heib [Tue, 20 Sep 2016 11:55:31 +0000 (14:55 +0300)]
net/mlx4_core: Fix to clean devlink resources

This patch cleans devlink resources by calling devlink_port_unregister()
to avoid the following issues:

- Kernel panic when triggering reset flow.
- Memory leak due to unfreed resources in mlx4_init_port_info().

Fixes: 09d4d087cd48 ("mlx4: Implement devlink interface")
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>
7 years agoMerge tag 'wireless-drivers-for-davem-2016-09-20' of git://git.kernel.org/pub/scm...
David S. Miller [Thu, 22 Sep 2016 01:45:19 +0000 (21:45 -0400)]
Merge tag 'wireless-drivers-for-davem-2016-09-20' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

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

iwlwifi

* fix to prevent firmware crash when sending off-channel frames
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: can: ifi: Configure transmitter delay
Marek Vasut [Mon, 19 Sep 2016 19:34:01 +0000 (21:34 +0200)]
net: can: ifi: Configure transmitter delay

Configure the transmitter delay register at +0x1c to correctly handle
the CAN FD bitrate switch (BRS). This moves the SSP (secondary sample
point) to a proper offset, so that the TDC mechanism works and won't
generate error frames on the CAN link.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agovti6: fix input path
Nicolas Dichtel [Mon, 19 Sep 2016 14:17:57 +0000 (16:17 +0200)]
vti6: fix input path

Since commit 1625f4529957, vti6 is broken, all input packets are dropped
(LINUX_MIB_XFRMINNOSTATES is incremented).

XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6 is set by vti6_rcv() before calling
xfrm6_rcv()/xfrm6_rcv_spi(), thus we cannot set to NULL that value in
xfrm6_rcv_spi().

A new function xfrm6_rcv_tnl() that enables to pass a value to
xfrm6_rcv_spi() is added, so that xfrm6_rcv() is not touched (this function
is used in several handlers).

CC: Alexey Kodanev <alexey.kodanev@oracle.com>
Fixes: 1625f4529957 ("net/xfrm_input: fix possible NULL deref of tunnel.ip6->parms.i_key")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
7 years agoipmr, ip6mr: return lastuse relative to now
Nikolay Aleksandrov [Tue, 20 Sep 2016 14:17:22 +0000 (16:17 +0200)]
ipmr, ip6mr: return lastuse relative to now

When I introduced the lastuse member I made a subtle error because it was
returned as an absolute value but that is meaningless to user-space as it
doesn't allow to see how old exactly an entry is. Let's make it similar to
how the bridge returns such values and make it relative to "now" (jiffies).
This allows us to show the actual age of the entries and is much more
useful (e.g. user-space daemons can age out entries, iproute2 can display
the lastuse properly).

Fixes: 43b9e1274060 ("net: ipmr/ip6mr: add support for keeping an entry age")
Reported-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'r8152-phy-fixes'
David S. Miller [Wed, 21 Sep 2016 04:53:53 +0000 (00:53 -0400)]
Merge branch 'r8152-phy-fixes'

Hayes Wang says:

====================
r8152: correct the flow of PHY

First, to enable the PHY as early as possible. Some settings may fail if the
PHY is power down.

Move the other PHY settings to hw_phy_cfg() to make sure the order is correct.

Finally, disable ALDPS and EEE before updating the PHY for RTL8153.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agor8152: disable ALDPS and EEE before setting PHY
hayeswang [Tue, 20 Sep 2016 08:22:09 +0000 (16:22 +0800)]
r8152: disable ALDPS and EEE before setting PHY

Disable ALDPS and EEE to avoid the possible failure when setting the PHY.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agor8152: remove r8153_enable_eee
hayeswang [Tue, 20 Sep 2016 08:22:08 +0000 (16:22 +0800)]
r8152: remove r8153_enable_eee

Remove r8153_enable_eee().

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agor8152: move PHY settings to hw_phy_cfg
hayeswang [Tue, 20 Sep 2016 08:22:07 +0000 (16:22 +0800)]
r8152: move PHY settings to hw_phy_cfg

Move the PHY relative settings together to hw_phy_cfg().

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agor8152: move enabling PHY
hayeswang [Tue, 20 Sep 2016 08:22:06 +0000 (16:22 +0800)]
r8152: move enabling PHY

Move enabling PHY to init(), otherwise some other settings may fail.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agor8152: move some functions
hayeswang [Tue, 20 Sep 2016 08:22:05 +0000 (16:22 +0800)]
r8152: move some functions

Move the following functions forward.

r8152_mmd_indirect()
r8152_mmd_read()
r8152_mmd_write()
r8152_eee_en()
r8152b_enable_eee()
r8153_eee_en()
r8153_enable_eee()
r8152b_enable_fc()
r8153_aldps_en()

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4/cxgb4vf: Allocate more queues for 25G and 100G adapter
Hariprasad Shenai [Tue, 20 Sep 2016 06:30:52 +0000 (12:00 +0530)]
cxgb4/cxgb4vf: Allocate more queues for 25G and 100G adapter

We were missing check for 25G and 100G while checking port speed,
which lead to less number of queues getting allocated for 25G & 100G
adapters and leading to low throughput. Adding the missing check for
both NIC and vNIC driver.

Also fixes port advertisement for 25G and 100G in ethtool output.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'linux-can-fixes-for-4.8-20160919' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Wed, 21 Sep 2016 02:46:14 +0000 (22:46 -0400)]
Merge tag 'linux-can-fixes-for-4.8-20160919' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-09-19

this is a pull request of one patch for the upcoming linux-4.8 release.

The patch by Fabio Estevam fixes the pm handling in the flexcan driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'usercopy-v4.8-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
Linus Torvalds [Wed, 21 Sep 2016 00:11:19 +0000 (17:11 -0700)]
Merge tag 'usercopy-v4.8-rc8' of git://git./linux/kernel/git/kees/linux

Pull usercopy hardening fix from Kees Cook:
 "Expand the arm64 vmalloc check to include skipping the module space
  too"

* tag 'usercopy-v4.8-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  mm: usercopy: Check for module addresses

7 years agofix fault_in_multipages_...() on architectures with no-op access_ok()
Al Viro [Tue, 20 Sep 2016 19:07:42 +0000 (20:07 +0100)]
fix fault_in_multipages_...() on architectures with no-op access_ok()

Switching iov_iter fault-in to multipages variants has exposed an old
bug in underlying fault_in_multipages_...(); they break if the range
passed to them wraps around.  Normally access_ok() done by callers will
prevent such (and it's a guaranteed EFAULT - ERR_PTR() values fall into
such a range and they should not point to any valid objects).

However, on architectures where userland and kernel live in different
MMU contexts (e.g. s390) access_ok() is a no-op and on those a range
with a wraparound can reach fault_in_multipages_...().

Since any wraparound means EFAULT there, the fix is trivial - turn
those

    while (uaddr <= end)
    ...
into

    if (unlikely(uaddr > end))
    return -EFAULT;
    do
    ...
    while (uaddr <= end);

Reported-by: Jan Stancek <jstancek@redhat.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
Cc: stable@vger.kernel.org # v3.5+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm: usercopy: Check for module addresses
Laura Abbott [Tue, 20 Sep 2016 15:56:36 +0000 (08:56 -0700)]
mm: usercopy: Check for module addresses

While running a compile on arm64, I hit a memory exposure

usercopy: kernel memory exposure attempt detected from fffffc0000f3b1a8 (buffer_head) (1 bytes)
------------[ cut here ]------------
kernel BUG at mm/usercopy.c:75!
Internal error: Oops - BUG: 0 [#1] SMP
Modules linked in: ip6t_rpfilter ip6t_REJECT
nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_broute bridge stp
llc ebtable_nat ip6table_security ip6table_raw ip6table_nat
nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
iptable_security iptable_raw iptable_nat nf_conntrack_ipv4
nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle
ebtable_filter ebtables ip6table_filter ip6_tables vfat fat xgene_edac
xgene_enet edac_core i2c_xgene_slimpro i2c_core at803x realtek xgene_dma
mdio_xgene gpio_dwapb gpio_xgene_sb xgene_rng mailbox_xgene_slimpro nfsd
auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c sdhci_of_arasan
sdhci_pltfm sdhci mmc_core xhci_plat_hcd gpio_keys
CPU: 0 PID: 19744 Comm: updatedb Tainted: G        W 4.8.0-rc3-threadinfo+ #1
Hardware name: AppliedMicro X-Gene Mustang Board/X-Gene Mustang Board, BIOS 3.06.12 Aug 12 2016
task: fffffe03df944c00 task.stack: fffffe00d128c000
PC is at __check_object_size+0x70/0x3f0
LR is at __check_object_size+0x70/0x3f0
...
[<fffffc00082b4280>] __check_object_size+0x70/0x3f0
[<fffffc00082cdc30>] filldir64+0x158/0x1a0
[<fffffc0000f327e8>] __fat_readdir+0x4a0/0x558 [fat]
[<fffffc0000f328d4>] fat_readdir+0x34/0x40 [fat]
[<fffffc00082cd8f8>] iterate_dir+0x190/0x1e0
[<fffffc00082cde58>] SyS_getdents64+0x88/0x120
[<fffffc0008082c70>] el0_svc_naked+0x24/0x28

fffffc0000f3b1a8 is a module address. Modules may have compiled in
strings which could get copied to userspace. In this instance, it
looks like "." which matches with a size of 1 byte. Extend the
is_vmalloc_addr check to be is_vmalloc_or_module_addr to cover
all possible cases.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
7 years agofs/proc/kcore.c: Add bounce buffer for ktext data
Jiri Olsa [Thu, 8 Sep 2016 07:57:08 +0000 (09:57 +0200)]
fs/proc/kcore.c: Add bounce buffer for ktext data

We hit hardened usercopy feature check for kernel text access by reading
kcore file:

  usercopy: kernel memory exposure attempt detected from ffffffff8179a01f (<kernel text>) (4065 bytes)
  kernel BUG at mm/usercopy.c:75!

Bypassing this check for kcore by adding bounce buffer for ktext data.

Reported-by: Steve Best <sbest@redhat.com>
Fixes: f5509cc18daa ("mm: Hardened usercopy")
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agofs/proc/kcore.c: Make bounce buffer global for read
Jiri Olsa [Thu, 8 Sep 2016 07:57:07 +0000 (09:57 +0200)]
fs/proc/kcore.c: Make bounce buffer global for read

Next patch adds bounce buffer for ktext area, so it's
convenient to have single bounce buffer for both
vmalloc/module and ktext cases.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoqed: Fix stack corruption on probe
Yuval Mintz [Mon, 19 Sep 2016 14:47:41 +0000 (17:47 +0300)]
qed: Fix stack corruption on probe

Commit fe56b9e6a8d95 ("qed: Add module with basic common support")
has introduced a stack corruption during probe, where filling a
local struct with data to be sent to management firmware is incorrectly
filled; The data is written outside of the struct and corrupts
the stack.

Changes from v1:
----------------
 - Correct the value written [Caught by David Laight]

Fixes: fe56b9e6a8d95 ("qed: Add module with basic common support")
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Add an entry for the core network DSA code
Andrew Lunn [Sun, 18 Sep 2016 19:17:19 +0000 (21:17 +0200)]
MAINTAINERS: Add an entry for the core network DSA code

The core distributed switch architecture code currently does not have
a MAINTAINERS entry, which results in some contributions not landing
in the right peoples inbox.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ipv6: fallback to full lookup if table lookup is unsuitable
Vincent Bernat [Sun, 18 Sep 2016 15:46:07 +0000 (17:46 +0200)]
net: ipv6: fallback to full lookup if table lookup is unsuitable

Commit 8c14586fc320 ("net: ipv6: Use passed in table for nexthop
lookups") introduced a regression: insertion of an IPv6 route in a table
not containing the appropriate connected route for the gateway but which
contained a non-connected route (like a default gateway) fails while it
was previously working:

    $ ip link add eth0 type dummy
    $ ip link set up dev eth0
    $ ip addr add 2001:db8::1/64 dev eth0
    $ ip route add ::/0 via 2001:db8::5 dev eth0 table 20
    $ ip route add 2001:db8:cafe::1/128 via 2001:db8::6 dev eth0 table 20
    RTNETLINK answers: No route to host
    $ ip -6 route show table 20
    default via 2001:db8::5 dev eth0  metric 1024  pref medium

After this patch, we get:

    $ ip route add 2001:db8:cafe::1/128 via 2001:db8::6 dev eth0 table 20
    $ ip -6 route show table 20
    2001:db8:cafe::1 via 2001:db8::6 dev eth0  metric 1024  pref medium
    default via 2001:db8::5 dev eth0  metric 1024  pref medium

Fixes: 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups")
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Tested-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'mlx5-fixes'
David S. Miller [Tue, 20 Sep 2016 02:10:25 +0000 (22:10 -0400)]
Merge branch 'mlx5-fixes'

Or Gerlitz says:

====================
mlx5 fixes to 4.8-rc6

This series series has a fix from Roi to memory corruption bug in
the bulk flow counters code and two late and hopefully last fixes
from me to the new eswitch offloads code.

Series done over net commit 37dd348 "bna: fix crash in bnad_get_strings()"
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx5: E-Switch, Handle mode change failures
Or Gerlitz [Sun, 18 Sep 2016 15:20:29 +0000 (18:20 +0300)]
net/mlx5: E-Switch, Handle mode change failures

E-switch mode changes involve creating HW tables, potentially allocating
netdevices, etc, and things can fail. Add an attempt to rollback to the
existing mode when changing to the new mode fails. Only if rollback fails,
getting proper SRIOV functionality requires module unload or sriov
disablement/enablement.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx5: E-Switch, Fix error flow in the SRIOV e-switch init code
Or Gerlitz [Sun, 18 Sep 2016 15:20:28 +0000 (18:20 +0300)]
net/mlx5: E-Switch, Fix error flow in the SRIOV e-switch init code

When enablement of the SRIOV e-switch in certain mode (switchdev or legacy)
fails, we must set the mode to none. Otherwise, we'll run into double free
based crashes when further attempting to deal with the e-switch (such
as when disabling sriov or unloading the driver).

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx5: Fix flow counter bulk command out mailbox allocation
Roi Dayan [Sun, 18 Sep 2016 15:20:27 +0000 (18:20 +0300)]
net/mlx5: Fix flow counter bulk command out mailbox allocation

The FW command output length should be only the length of struct
mlx5_cmd_fc_bulk out field. Failing to do so will cause the memcpy
call which is invoked later in the driver to write over wrong memory
address and corrupt kernel memory which results in random crashes.

This bug was found using the kernel address sanitizer (kasan).

Fixes: a351a1b03bf1 ('net/mlx5: Introduce bulk reading of flow counters')
Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Mon, 19 Sep 2016 23:08:03 +0000 (16:08 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "20 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  rapidio/rio_cm: avoid GFP_KERNEL in atomic context
  Revert "ocfs2: bump up o2cb network protocol version"
  ocfs2: fix start offset to ocfs2_zero_range_for_truncate()
  cgroup: duplicate cgroup reference when cloning sockets
  mm: memcontrol: make per-cpu charge cache IRQ-safe for socket accounting
  ocfs2: fix double unlock in case retry after free truncate log
  fanotify: fix list corruption in fanotify_get_response()
  fsnotify: add a way to stop queueing events on group shutdown
  ocfs2: fix trans extend while free cached blocks
  ocfs2: fix trans extend while flush truncate log
  ipc/shm: fix crash if CONFIG_SHMEM is not set
  mm: fix the page_swap_info() BUG_ON check
  autofs: use dentry flags to block walks during expire
  MAINTAINERS: update email for VLYNQ bus entry
  mm: avoid endless recursion in dump_page()
  mm, thp: fix leaking mapped pte in __collapse_huge_page_swapin()
  khugepaged: fix use-after-free in collapse_huge_page()
  MAINTAINERS: Maik has moved
  ocfs2/dlm: fix race between convert and migration
  mem-hotplug: don't clear the only node in new_node_page()

7 years agorapidio/rio_cm: avoid GFP_KERNEL in atomic context
Alexandre Bounine [Mon, 19 Sep 2016 21:44:47 +0000 (14:44 -0700)]
rapidio/rio_cm: avoid GFP_KERNEL in atomic context

As reported by Alexey Khoroshilov (https://lkml.org/lkml/2016/9/9/737):
riocm_send_close() is called from rio_cm_shutdown() under
spin_lock_bh(idr_lock), but riocm_send_close() uses a GFP_KERNEL
allocation.

Fix by taking riocm_send_close() outside of spinlock protected code.

[akpm@linux-foundation.org: remove unneeded `if (!list_empty())']
Link: http://lkml.kernel.org/r/20160915175402.10122-1-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoRevert "ocfs2: bump up o2cb network protocol version"
Junxiao Bi [Mon, 19 Sep 2016 21:44:44 +0000 (14:44 -0700)]
Revert "ocfs2: bump up o2cb network protocol version"

This reverts commit 38b52efd218b ("ocfs2: bump up o2cb network protocol
version").

This commit made rolling upgrade fail.  When one node is upgraded to new
version with this commit, the remaining nodes will fail to establish
connections to it, then the application like VMs on the remaining nodes
can't be live migrated to the upgraded one.  This will cause an outage.
Since negotiate hb timeout behavior didn't change without this commit,
so revert it.

Fixes: 38b52efd218bf ("ocfs2: bump up o2cb network protocol version")
Link: http://lkml.kernel.org/r/1471396924-10375-1-git-send-email-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoocfs2: fix start offset to ocfs2_zero_range_for_truncate()
Ashish Samant [Mon, 19 Sep 2016 21:44:42 +0000 (14:44 -0700)]
ocfs2: fix start offset to ocfs2_zero_range_for_truncate()

If we punch a hole on a reflink such that following conditions are met:

1. start offset is on a cluster boundary
2. end offset is not on a cluster boundary
3. (end offset is somewhere in another extent) or
   (hole range > MAX_CONTIG_BYTES(1MB)),

we dont COW the first cluster starting at the start offset.  But in this
case, we were wrongly passing this cluster to
ocfs2_zero_range_for_truncate() to zero out.  This will modify the
cluster in place and zero it in the source too.

Fix this by skipping this cluster in such a scenario.

To reproduce:

1. Create a random file of say 10 MB
     xfs_io -c 'pwrite -b 4k 0 10M' -f 10MBfile
2. Reflink  it
     reflink -f 10MBfile reflnktest
3. Punch a hole at starting at cluster boundary  with range greater that
1MB. You can also use a range that will put the end offset in another
extent.
     fallocate -p -o 0 -l 1048615 reflnktest
4. sync
5. Check the  first cluster in the source file. (It will be zeroed out).
    dd if=10MBfile iflag=direct bs=<cluster size> count=1 | hexdump -C

Link: http://lkml.kernel.org/r/1470957147-14185-1-git-send-email-ashish.samant@oracle.com
Signed-off-by: Ashish Samant <ashish.samant@oracle.com>
Reported-by: Saar Maoz <saar.maoz@oracle.com>
Reviewed-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Eric Ren <zren@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agocgroup: duplicate cgroup reference when cloning sockets
Johannes Weiner [Mon, 19 Sep 2016 21:44:38 +0000 (14:44 -0700)]
cgroup: duplicate cgroup reference when cloning sockets

When a socket is cloned, the associated sock_cgroup_data is duplicated
but not its reference on the cgroup.  As a result, the cgroup reference
count will underflow when both sockets are destroyed later on.

Fixes: bd1060a1d671 ("sock, cgroup: add sock->sk_cgroup")
Link: http://lkml.kernel.org/r/20160914194846.11153-2-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: <stable@vger.kernel.org> [4.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm: memcontrol: make per-cpu charge cache IRQ-safe for socket accounting
Johannes Weiner [Mon, 19 Sep 2016 21:44:36 +0000 (14:44 -0700)]
mm: memcontrol: make per-cpu charge cache IRQ-safe for socket accounting

During cgroup2 rollout into production, we started encountering css
refcount underflows and css access crashes in the memory controller.
Splitting the heavily shared css reference counter into logical users
narrowed the imbalance down to the cgroup2 socket memory accounting.

The problem turns out to be the per-cpu charge cache.  Cgroup1 had a
separate socket counter, but the new cgroup2 socket accounting goes
through the common charge path that uses a shared per-cpu cache for all
memory that is being tracked.  Those caches are safe against scheduling
preemption, but not against interrupts - such as the newly added packet
receive path.  When cache draining is interrupted by network RX taking
pages out of the cache, the resuming drain operation will put references
of in-use pages, thus causing the imbalance.

Disable IRQs during all per-cpu charge cache operations.

Fixes: f7e1cb6ec51b ("mm: memcontrol: account socket memory in unified hierarchy memory controller")
Link: http://lkml.kernel.org/r/20160914194846.11153-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: <stable@vger.kernel.org> [4.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoocfs2: fix double unlock in case retry after free truncate log
Joseph Qi [Mon, 19 Sep 2016 21:44:33 +0000 (14:44 -0700)]
ocfs2: fix double unlock in case retry after free truncate log

If ocfs2_reserve_cluster_bitmap_bits() fails with ENOSPC, it will try to
free truncate log and then retry.  Since ocfs2_try_to_free_truncate_log
will lock/unlock global bitmap inode, we have to unlock it before
calling this function.  But when retry reserve and it fails with no
global bitmap inode lock taken, it will unlock again in error handling
branch and BUG.

This issue also exists if no need retry and then ocfs2_inode_lock fails.
So fix it.

Fixes: 2070ad1aebff ("ocfs2: retry on ENOSPC if sufficient space in truncate log")
Link: http://lkml.kernel.org/r/57D91939.6030809@huawei.com
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Jiufei Xue <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agofanotify: fix list corruption in fanotify_get_response()
Jan Kara [Mon, 19 Sep 2016 21:44:30 +0000 (14:44 -0700)]
fanotify: fix list corruption in fanotify_get_response()

fanotify_get_response() calls fsnotify_remove_event() when it finds that
group is being released from fanotify_release() (bypass_perm is set).

However the event it removes need not be only in the group's notification
queue but it can have already moved to access_list (userspace read the
event before closing the fanotify instance fd) which is protected by a
different lock.  Thus when fsnotify_remove_event() races with
fanotify_release() operating on access_list, the list can get corrupted.

Fix the problem by moving all the logic removing permission events from
the lists to one place - fanotify_release().

Fixes: 5838d4442bd5 ("fanotify: fix double free of pending permission events")
Link: http://lkml.kernel.org/r/1473797711-14111-3-git-send-email-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reported-by: Miklos Szeredi <mszeredi@redhat.com>
Tested-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agofsnotify: add a way to stop queueing events on group shutdown
Jan Kara [Mon, 19 Sep 2016 21:44:27 +0000 (14:44 -0700)]
fsnotify: add a way to stop queueing events on group shutdown

Implement a function that can be called when a group is being shutdown
to stop queueing new events to the group.  Fanotify will use this.

Fixes: 5838d4442bd5 ("fanotify: fix double free of pending permission events")
Link: http://lkml.kernel.org/r/1473797711-14111-2-git-send-email-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoocfs2: fix trans extend while free cached blocks
Junxiao Bi [Mon, 19 Sep 2016 21:44:24 +0000 (14:44 -0700)]
ocfs2: fix trans extend while free cached blocks

The root cause of this issue is the same with the one fixed by the last
patch, but this time credits for allocator inode and group descriptor
may not be consumed before trans extend.

The following error was caught:

  WARNING: CPU: 0 PID: 2037 at fs/jbd2/transaction.c:269 start_this_handle+0x4c3/0x510 [jbd2]()
  Modules linked in: ocfs2 nfsd lockd grace nfs_acl auth_rpcgss sunrpc autofs4 ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs sd_mod sg ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ppdev xen_kbdfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_netfront parport_pc parport pcspkr i2c_piix4 i2c_core acpi_cpufreq ext4 jbd2 mbcache xen_blkfront floppy pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod
  CPU: 0 PID: 2037 Comm: rm Tainted: G        W       4.1.12-37.6.3.el6uek.bug24573128v2.x86_64 #2
  Hardware name: Xen HVM domU, BIOS 4.4.4OVM 02/11/2016
  Call Trace:
    dump_stack+0x48/0x5c
    warn_slowpath_common+0x95/0xe0
    warn_slowpath_null+0x1a/0x20
    start_this_handle+0x4c3/0x510 [jbd2]
    jbd2__journal_restart+0x161/0x1b0 [jbd2]
    jbd2_journal_restart+0x13/0x20 [jbd2]
    ocfs2_extend_trans+0x74/0x220 [ocfs2]
    ocfs2_free_cached_blocks+0x16b/0x4e0 [ocfs2]
    ocfs2_run_deallocs+0x70/0x270 [ocfs2]
    ocfs2_commit_truncate+0x474/0x6f0 [ocfs2]
    ocfs2_truncate_for_delete+0xbd/0x380 [ocfs2]
    ocfs2_wipe_inode+0x136/0x6a0 [ocfs2]
    ocfs2_delete_inode+0x2a2/0x3e0 [ocfs2]
    ocfs2_evict_inode+0x28/0x60 [ocfs2]
    evict+0xab/0x1a0
    iput_final+0xf6/0x190
    iput+0xc8/0xe0
    do_unlinkat+0x1b7/0x310
    SyS_unlinkat+0x22/0x40
    system_call_fastpath+0x12/0x71
  ---[ end trace a62437cb060baa71 ]---
  JBD2: rm wants too many credits (149 > 128)

Link: http://lkml.kernel.org/r/1473674623-11810-2-git-send-email-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoocfs2: fix trans extend while flush truncate log
Junxiao Bi [Mon, 19 Sep 2016 21:44:21 +0000 (14:44 -0700)]
ocfs2: fix trans extend while flush truncate log

Every time, ocfs2_extend_trans() included a credit for truncate log
inode, but as that inode had been managed by jbd2 running transaction
first time, it will not consume that credit until
jbd2_journal_restart().

Since total credits to extend always included the un-consumed ones,
there will be more and more un-consumed credit, at last
jbd2_journal_restart() will fail due to credit number over the half of
max transction credit.

The following error was caught when unlinking a large file with many
extents:

  ------------[ cut here ]------------
  WARNING: CPU: 0 PID: 13626 at fs/jbd2/transaction.c:269 start_this_handle+0x4c3/0x510 [jbd2]()
  Modules linked in: ocfs2 nfsd lockd grace nfs_acl auth_rpcgss sunrpc autofs4 ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs sd_mod sg ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ppdev xen_kbdfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea parport_pc parport pcspkr i2c_piix4 i2c_core acpi_cpufreq ext4 jbd2 mbcache xen_blkfront floppy pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod
  CPU: 0 PID: 13626 Comm: unlink Tainted: G        W       4.1.12-37.6.3.el6uek.x86_64 #2
  Hardware name: Xen HVM domU, BIOS 4.4.4OVM 02/11/2016
  Call Trace:
    dump_stack+0x48/0x5c
    warn_slowpath_common+0x95/0xe0
    warn_slowpath_null+0x1a/0x20
    start_this_handle+0x4c3/0x510 [jbd2]
    jbd2__journal_restart+0x161/0x1b0 [jbd2]
    jbd2_journal_restart+0x13/0x20 [jbd2]
    ocfs2_extend_trans+0x74/0x220 [ocfs2]
    ocfs2_replay_truncate_records+0x93/0x360 [ocfs2]
    __ocfs2_flush_truncate_log+0x13e/0x3a0 [ocfs2]
    ocfs2_remove_btree_range+0x458/0x7f0 [ocfs2]
    ocfs2_commit_truncate+0x1b3/0x6f0 [ocfs2]
    ocfs2_truncate_for_delete+0xbd/0x380 [ocfs2]
    ocfs2_wipe_inode+0x136/0x6a0 [ocfs2]
    ocfs2_delete_inode+0x2a2/0x3e0 [ocfs2]
    ocfs2_evict_inode+0x28/0x60 [ocfs2]
    evict+0xab/0x1a0
    iput_final+0xf6/0x190
    iput+0xc8/0xe0
    do_unlinkat+0x1b7/0x310
    SyS_unlink+0x16/0x20
    system_call_fastpath+0x12/0x71
  ---[ end trace 28aa7410e69369cf ]---
  JBD2: unlink wants too many credits (251 > 128)

Link: http://lkml.kernel.org/r/1473674623-11810-1-git-send-email-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoipc/shm: fix crash if CONFIG_SHMEM is not set
Kirill A. Shutemov [Mon, 19 Sep 2016 21:44:18 +0000 (14:44 -0700)]
ipc/shm: fix crash if CONFIG_SHMEM is not set

Commit c01d5b300774 ("shmem: get_unmapped_area align huge page") makes
use of shm_get_unmapped_area() in shm_file_operations() unconditional to
CONFIG_MMU.

As Tony Battersby pointed this can lead NULL-pointer dereference on
machine with CONFIG_MMU=y and CONFIG_SHMEM=n.  In this case ipc/shm is
backed by ramfs which doesn't provide f_op->get_unmapped_area for
configurations with MMU.

The solution is to provide dummy f_op->get_unmapped_area for ramfs when
CONFIG_MMU=y, which just call current->mm->get_unmapped_area().

Fixes: c01d5b300774 ("shmem: get_unmapped_area align huge page")
Link: http://lkml.kernel.org/r/20160912102704.140442-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Tony Battersby <tonyb@cybernetics.com>
Tested-by: Tony Battersby <tonyb@cybernetics.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org> [4.7.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm: fix the page_swap_info() BUG_ON check
Santosh Shilimkar [Mon, 19 Sep 2016 21:44:15 +0000 (14:44 -0700)]
mm: fix the page_swap_info() BUG_ON check

Commit 62c230bc1790 ("mm: add support for a filesystem to activate
swap files and use direct_IO for writing swap pages") replaced the
swap_aops dirty hook from __set_page_dirty_no_writeback() with
swap_set_page_dirty().

For normal cases without these special SWP flags code path falls back to
__set_page_dirty_no_writeback() so the behaviour is expected to be the
same as before.

But swap_set_page_dirty() makes use of the page_swap_info() helper to
get the swap_info_struct to check for the flags like SWP_FILE,
SWP_BLKDEV etc as desired for those features.  This helper has
BUG_ON(!PageSwapCache(page)) which is racy and safe only for the
set_page_dirty_lock() path.

For the set_page_dirty() path which is often needed for cases to be
called from irq context, kswapd() can toggle the flag behind the back
while the call is getting executed when system is low on memory and
heavy swapping is ongoing.

This ends up with undesired kernel panic.

This patch just moves the check outside the helper to its users
appropriately to fix kernel panic for the described path.  Couple of
users of helpers already take care of SwapCache condition so I skipped
them.

Link: http://lkml.kernel.org/r/1473460718-31013-1-git-send-email-santosh.shilimkar@oracle.com
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Joe Perches <joe@perches.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Rik van Riel <riel@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jens Axboe <axboe@fb.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org> [4.7.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoautofs: use dentry flags to block walks during expire
Ian Kent [Mon, 19 Sep 2016 21:44:12 +0000 (14:44 -0700)]
autofs: use dentry flags to block walks during expire

Somewhere along the way the autofs expire operation has changed to hold
a spin lock over expired dentry selection.  The autofs indirect mount
expired dentry selection is complicated and quite lengthy so it isn't
appropriate to hold a spin lock over the operation.

Commit 47be61845c77 ("fs/dcache.c: avoid soft-lockup in dput()") added a
might_sleep() to dput() causing a WARN_ONCE() about this usage to be
issued.

But the spin lock doesn't need to be held over this check, the autofs
dentry info.  flags are enough to block walks into dentrys during the
expire.

I've left the direct mount expire as it is (for now) because it is much
simpler and quicker than the indirect mount expire and adding spin lock
release and re-aquires would do nothing more than add overhead.

Fixes: 47be61845c77 ("fs/dcache.c: avoid soft-lockup in dput()")
Link: http://lkml.kernel.org/r/20160912014017.1773.73060.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Reported-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: NeilBrown <neilb@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMAINTAINERS: update email for VLYNQ bus entry
Florian Fainelli [Mon, 19 Sep 2016 21:44:09 +0000 (14:44 -0700)]
MAINTAINERS: update email for VLYNQ bus entry

Link: http://lkml.kernel.org/r/1473218738-21836-1-git-send-email-f.fainelli@gmail.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm: avoid endless recursion in dump_page()
Kirill A. Shutemov [Mon, 19 Sep 2016 21:44:07 +0000 (14:44 -0700)]
mm: avoid endless recursion in dump_page()

dump_page() uses page_mapcount() to get mapcount of the page.
page_mapcount() has VM_BUG_ON_PAGE(PageSlab(page)) as mapcount doesn't
make sense for slab pages and the field in struct page used for other
information.

It leads to recursion if dump_page() called for slub page and DEBUG_VM
is enabled:

dump_page() -> page_mapcount() -> VM_BUG_ON_PAGE() -> dump_page -> ...

Let's avoid calling page_mapcount() for slab pages in dump_page().

Link: http://lkml.kernel.org/r/20160908082137.131076-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm, thp: fix leaking mapped pte in __collapse_huge_page_swapin()
Ebru Akagunduz [Mon, 19 Sep 2016 21:44:04 +0000 (14:44 -0700)]
mm, thp: fix leaking mapped pte in __collapse_huge_page_swapin()

Currently, khugepaged does not permit swapin if there are enough young
pages in a THP.  The problem is when a THP does not have enough young
pages, khugepaged leaks mapped ptes.

This patch prohibits leaking mapped ptes.

Link: http://lkml.kernel.org/r/1472820276-7831-1-git-send-email-ebru.akagunduz@gmail.com
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Suggested-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agokhugepaged: fix use-after-free in collapse_huge_page()
Kirill A. Shutemov [Mon, 19 Sep 2016 21:44:01 +0000 (14:44 -0700)]
khugepaged: fix use-after-free in collapse_huge_page()

hugepage_vma_revalidate() tries to re-check if we still should try to
collapse small pages into huge one after the re-acquiring mmap_sem.

The problem Dmitry Vyukov reported[1] is that the vma found by
hugepage_vma_revalidate() can be suitable for huge pages, but not the
same vma we had before dropping mmap_sem.  And dereferencing original
vma can lead to fun results..

Let's use vma hugepage_vma_revalidate() found instead of assuming it's the
same as what we had before the lock was dropped.

[1] http://lkml.kernel.org/r/CACT4Y+Z3gigBvhca9kRJFcjX0G70V_nRhbwKBU+yGoESBDKi9Q@mail.gmail.com

Link: http://lkml.kernel.org/r/20160907122559.GA6542@black.fi.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Sasha Levin <levinsasha928@gmail.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: syzkaller <syzkaller@googlegroups.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMAINTAINERS: Maik has moved
Sudip Mukherjee [Mon, 19 Sep 2016 21:43:58 +0000 (14:43 -0700)]
MAINTAINERS: Maik has moved

Maik is no longer using the plusserver.de email, update with his
current email.

Link: http://lkml.kernel.org/r/1473007794-27960-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Cc: Maik Broemme <mbroemme@libmpq.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoocfs2/dlm: fix race between convert and migration
Joseph Qi [Mon, 19 Sep 2016 21:43:55 +0000 (14:43 -0700)]
ocfs2/dlm: fix race between convert and migration

Commit ac7cf246dfdb ("ocfs2/dlm: fix race between convert and recovery")
checks if lockres master has changed to identify whether new master has
finished recovery or not.  This will introduce a race that right after
old master does umount ( means master will change), a new convert
request comes.

In this case, it will reset lockres state to DLM_RECOVERING and then
retry convert, and then fail with lockres->l_action being set to
OCFS2_AST_INVALID, which will cause inconsistent lock level between
ocfs2 and dlm, and then finally BUG.

Since dlm recovery will clear lock->convert_pending in
dlm_move_lockres_to_recovery_list, we can use it to correctly identify
the race case between convert and recovery.  So fix it.

Fixes: ac7cf246dfdb ("ocfs2/dlm: fix race between convert and recovery")
Link: http://lkml.kernel.org/r/57CE1569.8010704@huawei.com
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Jun Piao <piaojun@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomem-hotplug: don't clear the only node in new_node_page()
Li Zhong [Mon, 19 Sep 2016 21:43:52 +0000 (14:43 -0700)]
mem-hotplug: don't clear the only node in new_node_page()

Commit 394e31d2ceb4 ("mem-hotplug: alloc new page from a nearest
neighbor node when mem-offline") introduced new_node_page() for memory
hotplug.

In new_node_page(), the nid is cleared before calling
__alloc_pages_nodemask().  But if it is the only node of the system, and
the first round allocation fails, it will not be able to get memory from
an empty nodemask, and will trigger oom.

The patch checks whether it is the last node on the system, and if it
is, then don't clear the nid in the nodemask.

Fixes: 394e31d2ceb4 ("mem-hotplug: alloc new page from a nearest neighbor node when mem-offline")
Link: http://lkml.kernel.org/r/1473044391.4250.19.camel@TP420
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Reported-by: John Allen <jallen@linux.vnet.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoscripts/faddr2line: improve on base path filtering a bit
Linus Torvalds [Mon, 19 Sep 2016 21:49:08 +0000 (14:49 -0700)]
scripts/faddr2line: improve on base path filtering a bit

Due to our compiler include directives, the build pathnames for header
files often end up being of the form "$srcdir/./include/linux/xyz.h",
which ends up having that extra "." path component after the build base
in it.

Teach faddr2line to skip that too, to make code generated in inline
functions in header files match the filename for the regular C files.

Rabin Vincent pointed out that I can't make a stricter regexp match by
using the " at " prefix for the pathname, because that ends up being
locale-dependent.  But this does require that the path match be preceded
by a space, to make it a bit more strict (that matters mainly if we
didn't find any base_dir at all, and we only end up with the "./" part
of the match)

Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Rabin Vincent <rabin@rab.in>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Mon, 19 Sep 2016 19:58:34 +0000 (12:58 -0700)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a potential weakness in IPsec CBC IV generation, as well as
  a number of issues that arose out of an OOM crash on ARM with CTR-mode
  AES"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: arm64/aes-ctr - fix NULL dereference in tail processing
  crypto: arm/aes-ctr - fix NULL dereference in tail processing
  crypto: skcipher - Fix blkcipher walk OOM crash
  crypto: echainiv - Replace chaining with multiplication

7 years agoMerge tag 'drm-fixes-for-4.8-rc7' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Mon, 19 Sep 2016 19:27:31 +0000 (12:27 -0700)]
Merge tag 'drm-fixes-for-4.8-rc7' of git://people.freedesktop.org/~airlied/linux

Pull exynos and one stable ABI fix from Dave Airlie:
 "One important drm 32/64 ABI fix came in so I'll dequeue what I have,
  the rest is just exynos runtime pm fixes, but the net removal of code
  seems like a win to me.

  I'm going to be sporadic this week due to school holidays, so if
  anything urgent turns up, Daniel will take care of it"

* tag 'drm-fixes-for-4.8-rc7' of git://people.freedesktop.org/~airlied/linux:
  drm: Only use compat ioctl for addfb2 on X86/IA64
  Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning
  drm/exynos: g2d: fix system and runtime pm integration
  drm/exynos: rotator: fix system and runtime pm integration
  drm/exynos: gsc: fix system and runtime pm integration
  drm/exynos: fimc: fix system and runtime pm integration
  exynos-drm: Fix unsupported GEM memory type error message to be clear

7 years agoscripts: add script for translating stack dump function offsets
Josh Poimboeuf [Mon, 19 Sep 2016 15:52:14 +0000 (10:52 -0500)]
scripts: add script for translating stack dump function offsets

addr2line doesn't work with KASLR addresses.  Add a basic addr2line
wrapper script which takes the 'func+offset/size' format as input.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years ago[media] cx23885/saa7134: assign q->dev to the PCI device
Hans Verkuil [Sun, 18 Sep 2016 14:24:50 +0000 (11:24 -0300)]
[media] cx23885/saa7134: assign q->dev to the PCI device

Fix a regression caused by commit 2bc46b3ad3c1 ("[media] media/pci:
convert drivers to use the new vb2_queue dev field").

Three places where q->dev should be set were missed, causing
a WARN.

Fixes: 2bc46b3ad3c1 ("[media] media/pci: convert drivers to use the new vb2_queue dev field").

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
7 years agocan: flexcan: fix resume function
Fabio Estevam [Wed, 17 Aug 2016 15:41:08 +0000 (12:41 -0300)]
can: flexcan: fix resume function

On a imx6ul-pico board the following error is seen during system suspend:

dpm_run_callback(): platform_pm_resume+0x0/0x54 returns -110
PM: Device 2090000.flexcan failed to resume: error -110

The reason for this suspend error is because when the CAN interface is not
active the clocks are disabled and then flexcan_chip_enable() will
always fail due to a timeout error.

In order to fix this issue, only call flexcan_chip_enable/disable()
when the CAN interface is active.

Based on a patch from Dong Aisheng in the NXP kernel.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agoxfrm: Fix memory leak of aead algorithm name
Ilan Tayari [Sun, 18 Sep 2016 07:42:53 +0000 (07:42 +0000)]
xfrm: Fix memory leak of aead algorithm name

commit 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms")
introduced aead. The function attach_aead kmemdup()s the algorithm
name during xfrm_state_construct().
However this memory is never freed.
Implementation has since been slightly modified in
commit ee5c23176fcc ("xfrm: Clone states properly on migration")
without resolving this leak.
This patch adds a kfree() call for the aead algorithm name.

Fixes: 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms")
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Acked-by: Rami Rosen <roszenrami@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
7 years agodrm: Only use compat ioctl for addfb2 on X86/IA64
Kristian H. Kristensen [Tue, 13 Sep 2016 21:20:45 +0000 (14:20 -0700)]
drm: Only use compat ioctl for addfb2 on X86/IA64

Similar to struct drm_update_draw, struct drm_mode_fb_cmd2 has an
unaligned 64 bit field (modifier). This get packed differently between
32 bit and 64 bit modes on architectures that can handle unaligned 64
bit access (X86 and IA64).  Other architectures pack the structs the
same and don't need the compat wrapper. Use the same condition for
drm_mode_fb_cmd2 as we use for drm_update_draw.

Note that only the modifier will be packed differently between compat
and non-compat versions.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org>
[seanpaul added not at bottom of commit msg re: modifier]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1473801645-116011-1-git-send-email-hoegsberg@chromium.org
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoMerge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Dave Airlie [Mon, 19 Sep 2016 04:22:56 +0000 (14:22 +1000)]
Merge branch 'exynos-drm-fixes' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes

Just fixup to runtime pm usage and some cleanups.

* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning
  drm/exynos: g2d: fix system and runtime pm integration
  drm/exynos: rotator: fix system and runtime pm integration
  drm/exynos: gsc: fix system and runtime pm integration
  drm/exynos: fimc: fix system and runtime pm integration
  exynos-drm: Fix unsupported GEM memory type error message to be clear

7 years agoMerge tag 'mac80211-for-davem-2016-09-16' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Mon, 19 Sep 2016 02:26:49 +0000 (22:26 -0400)]
Merge tag 'mac80211-for-davem-2016-09-16' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Two more fixes:
 * reject aggregation sessions for TSID/TID 8-16 that we
   can never use anyway and which could confuse drivers
 * check return value of skb_linearize()
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agostmmac: fix PWRDWN into the PMT register for global unicast.
Giuseppe CAVALLARO [Fri, 16 Sep 2016 08:50:13 +0000 (10:50 +0200)]
stmmac: fix PWRDWN into the PMT register for global unicast.

MAC devices use the RWKPKTEN and MGKPKTEN bits of the PMT Control/Status
register to generate power management events.
So this patch is to properly set the RWKPKTEN [BIT(2)] inside the
PMT register (needed in case of global unicast).

Reported-by: Aditi SHARMA <aditi-hed.sharma@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoSubject: [PATCH, RESEND] drm: exynos: avoid unused function warning
Arnd Bergmann [Sun, 18 Sep 2016 13:51:38 +0000 (22:51 +0900)]
Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning

When CONFIG_PM is not set, we get a warning about an unused function:

drivers/gpu/drm/exynos/exynos_drm_gsc.c:1219:12: error: 'gsc_clk_ctrl' defined but not used [-Werror=unused-function]
 static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
            ^~~~~~~~~~~~

This removes the two #ifdef checks in this file and instead marks the
functions as __maybe_unused, which is a more reliable way of doing the
same, allowing better build coverage and avoiding the warning above.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agoLinux 4.8-rc7 v4.8-rc7
Linus Torvalds [Mon, 19 Sep 2016 00:27:41 +0000 (17:27 -0700)]
Linux 4.8-rc7

7 years agoMerge tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 18 Sep 2016 19:07:05 +0000 (12:07 -0700)]
Merge tag 'usb-4.8-rc7' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are two small fixes, and one new device id, for 4.8-rc7

  The fixes solve a build error that was reported in your tree for the
  blackfin arch, and resolve an issue with a number of broken USB
  devices that reported the wrong interval rate.  Included here is also
  a new device id for the usb-serial driver.

  All have been in linux-next with no reported issues"

* tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: change bInterval default to 10 ms
  usb: musb: Fix tusb6010 compile error on blackfin
  USB: serial: simple: add support for another Infineon flashloader

7 years agoMerge tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:57:24 +0000 (11:57 -0700)]
Merge tag 'fixes-for-linus-v4.8-rc7' of git://git./linux/kernel/git/groeck/linux-staging

Pull uaccess fixes from Guenter Roeck:
 "Two patches fixing problems introduced with copy_from_user changes"

* tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  openrisc: fix the fix of copy_from_user()
  avr32: fix 'undefined reference to `___copy_from_user'

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:50:48 +0000 (11:50 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A couple of small fixes to x86 perf drivers:

   - Measure L2 for HW_CACHE* events on AMD

   - Fix the address filter handling in the intel/pt driver

   - Handle the BTS disabling at the proper place"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2
  perf/x86/intel/pt: Do validate the size of a kernel address filter
  perf/x86/intel/pt: Fix kernel address filter's offset validation
  perf/x86/intel/pt: Fix an off-by-one in address filter configuration
  perf/x86/intel: Don't disable "intel_bts" around "intel" event batching

7 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:38:46 +0000 (11:38 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull SMP build fixlet from Thomas Gleixner:
 "Add a missing include in cpuhotplug.h"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Include linux/types.h in linux/cpuhotplug.h

7 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:08:00 +0000 (11:08 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "Two patches from Boris which address a potential deadlock in the atmel
  irq chip driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/atmel-aic: Fix potential deadlock in ->xlate()
  genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers

7 years agoopenrisc: fix the fix of copy_from_user()
Guenter Roeck [Sat, 17 Sep 2016 19:57:24 +0000 (12:57 -0700)]
openrisc: fix the fix of copy_from_user()

Since commit acb2505d0119 ("openrisc: fix copy_from_user()"),
copy_from_user() returns the number of bytes requested, not the
number of bytes not copied.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Fixes: acb2505d0119 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
7 years agoavr32: fix 'undefined reference to `___copy_from_user'
Guenter Roeck [Sat, 17 Sep 2016 14:52:49 +0000 (07:52 -0700)]
avr32: fix 'undefined reference to `___copy_from_user'

avr32 builds fail with:

arch/avr32/kernel/built-in.o: In function `arch_ptrace':
(.text+0x650): undefined reference to `___copy_from_user'
arch/avr32/kernel/built-in.o:(___ksymtab+___copy_from_user+0x0): undefined
reference to `___copy_from_user'
kernel/built-in.o: In function `proc_doulongvec_ms_jiffies_minmax':
(.text+0x5dd8): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `proc_dointvec_minmax_sysadmin':
sysctl.c:(.text+0x6174): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `ptrace_has_cap':
ptrace.c:(.text+0x69c0): undefined reference to `___copy_from_user'
kernel/built-in.o:ptrace.c:(.text+0x6b90): more undefined references to
`___copy_from_user' follow

Fixes: 8630c32275ba ("avr32: fix copy_from_user()")
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
7 years agodrm/exynos: g2d: fix system and runtime pm integration
Marek Szyprowski [Wed, 31 Aug 2016 12:55:57 +0000 (14:55 +0200)]
drm/exynos: g2d: fix system and runtime pm integration

Move code from system sleep pm to runtime pm callbacks to ensure proper
driver state preservation when device is under power domain. Then, use
generic helpers for using runtime pm for system sleep pm.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agodrm/exynos: rotator: fix system and runtime pm integration
Marek Szyprowski [Wed, 31 Aug 2016 12:55:56 +0000 (14:55 +0200)]
drm/exynos: rotator: fix system and runtime pm integration

Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agodrm/exynos: gsc: fix system and runtime pm integration
Marek Szyprowski [Wed, 31 Aug 2016 12:55:55 +0000 (14:55 +0200)]
drm/exynos: gsc: fix system and runtime pm integration

Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agodrm/exynos: fimc: fix system and runtime pm integration
Marek Szyprowski [Wed, 31 Aug 2016 12:55:54 +0000 (14:55 +0200)]
drm/exynos: fimc: fix system and runtime pm integration

Use generic helpers instead of open-coding usage of runtime pm for system
sleep pm, which was potentially broken for some corner cases.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agoexynos-drm: Fix unsupported GEM memory type error message to be clear
Shuah Khan [Mon, 8 Aug 2016 23:48:20 +0000 (17:48 -0600)]
exynos-drm: Fix unsupported GEM memory type error message to be clear

Fix unsupported GEM memory type error message to include the memory type
information.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
7 years agofix iov_iter_fault_in_readable()
Al Viro [Thu, 15 Sep 2016 23:11:45 +0000 (00:11 +0100)]
fix iov_iter_fault_in_readable()

... by turning it into what used to be multipages counterpart

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc
Linus Torvalds [Sat, 17 Sep 2016 19:59:57 +0000 (12:59 -0700)]
Merge tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC host:
   - omap/omap_hsmmc: Initialize dma_slave_config to avoid random data
   - sdhci-st: Handle interconnect clock"

* tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: omap: Initialize dma_slave_config to avoid random data in it's fields
  mmc: omap_hsmmc: Initialize dma_slave_config to avoid random data
  mmc: sdhci-st: Handle interconnect clock
  dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock

7 years agoMerge tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 17 Sep 2016 19:52:01 +0000 (12:52 -0700)]
Merge tag 'powerpc-4.8-6' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes for code merged this cycle:

   - Fix restore of SPRs upon wake up from hypervisor state loss from
     Gautham R  Shenoy
   - Fix the state of root PE from Gavin Shan
   - Detach from PE on releasing PCI device from Gavin Shan
   - Fix size of NUM_CPU_FTR_KEYS on 32-bit
   - Fix missed TCE invalidations that should fallback to OPAL"

* tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL
  powerpc/powernv: Detach from PE on releasing PCI device
  powerpc/powernv: Fix the state of root PE
  powerpc/kernel: Fix size of NUM_CPU_FTR_KEYS on 32-bit
  powerpc/powernv: Fix restore of SPRs upon wake up from hypervisor state loss

7 years agobna: fix crash in bnad_get_strings()
Ivan Vecera [Thu, 15 Sep 2016 20:47:52 +0000 (22:47 +0200)]
bna: fix crash in bnad_get_strings()

Commit 6e7333d "net: add rx_nohandler stat counter" added the new entry
rx_nohandler into struct rtnl_link_stats64. Unfortunately the bna
driver foolishly depends on the structure. It uses part of it for
ethtool statistics and it's not bad but the driver assumes its size
is constant as it defines string for each existing entry. The problem
occurs when the structure is extended because you need to modify bna
driver as well. If not any attempt to retrieve ethtool statistics results
in crash in bnad_get_strings().
The patch changes BNAD_ETHTOOL_STATS_NUM so it counts real number of
strings in the array and also removes rtnl_link_stats64 entries that
are not used in output and are always zero.

Fixes: 6e7333d "net: add rx_nohandler stat counter"
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>