Commit Graph

663575 Commits

Author SHA1 Message Date
Heiner Kallweit
94d765bbfb mmc: meson-gx: simplify bounce buffer setting in meson_mmc_start_cmd
Core ensures that there are no commands with cmd->data being set and
nothing to transfer. And we don't have to reset bit CMD_CFG_DATA_NUM
because cmd_cfg was zero-initialized and this bit isn't set.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:07 +02:00
Shawn Lin
bc2dcc1a2a mmc: dw_mmc: improve dw_mci_reset a bit
Too much condition iteration makes the code
less readable. Slightly improve it.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:06 +02:00
Shawn Lin
4dba18defb mmc: dw_mmc: move mci_send_cmd forward to avoid declaration
No functional change intended.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:05 +02:00
Shawn Lin
132b3b6aa6 mmc: dw_mmc: remove declaration of dw_mci_card_busy
No need to declar it there, remove it.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:05 +02:00
Shawn Lin
671fa142fc mmc: dw_mmc: move dw_mci_get_cd forward to avoid declaration
No functional change intended.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:04 +02:00
Shawn Lin
8e6db1f655 mmc: dw_mmc: move dw_mci_ctrl_reset forward to avoid declaration
No functional change intended.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:03 +02:00
Shawn Lin
4e7392b2ac mmc: dw_mmc: move dw_mci_reset forward to avoid declaration
No functional change intended.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:03 +02:00
Shawn Lin
b6d2d81c5c mmc: dw_mmc: improve the timeout polling code
Just use the readl_poll_timeout{_atomic} to avold open
coding them.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24 21:41:02 +02:00
Linus Torvalds
5a7ad1146c Linux 4.11-rc8 2017-04-23 16:53:00 -07:00
Linus Torvalds
9ea33c44fb This pull request contains fixes for issues in both UBI and UBIFS:
- More O_TMPFILE fallout
 - RENAME_WHITEOUT regression due to a mis-merge
 - Memory leak in ubifs_mknod()
 - Power-cut problem in UBI's update volume feature
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABAgAGBQJY/HTyAAoJEEtJtSqsAOnW7bYP/jYNCRKUls/FhWcF02h/tuPz
 gYemObWxoEvPqy8laNwyYEkzct4ADsz4C2RCGxygJks2qYCzuXy+IQd/gQlJNIhM
 B9sNa1se1ntt71vwdwgRUgVRMGjknJ6rY8ZP2actuuzztdJE9fGNKhEarMVyQQ61
 f7+AvmFc0CHTEBi5hcHX/Rtdqvzt4OOJl5pLo+VT2RRegxb3oHgl1UTD+gqkdkMg
 WOxvdriSQPi8HHz1clCN36lG2H05sKLd7YEhSWKf6Pt0YYJmF8ckxLERzRclpV4D
 XXqUEwhrovJC+oRQbXS+DaJfjsML9y8GB28izC5c+H8/teGKv2n5NXtjsyWNCfnx
 gmZT1S24TnTsofbmd1GoemMMD4Vlt9EDq2+QVFCaPgK9eWkDQ/xlhjrfPMsuz+YY
 uCWgyzsJyvRewiOlkN1jcTua6f1nHt0SP7alNy0XUQF08jwYMaaf5IJAbEHP8Ink
 seIXNObiGgHl+bBsTQ4SU9PUIJIKIar0TSQf8HXV+/Go3XDz4ZTSjc1KVXs5Hg97
 irUPllIKmjb5Doiln12A5zePmgT2uaChFG21+6SwEWkFYrD3XIxBORxkEF6E7FJU
 asRk2oBzNYezz+qpjn3NeZnIV7Uc9B8bBZpqFrsys2KRAJIZRtdhpAF+jIbrS+7N
 JrakPr2I/FKnsNU/0mZh
 =ER2q
 -----END PGP SIGNATURE-----

Merge tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs

Pull UBI/UBIFS fixes from Richard Weinberger:
 "This contains fixes for issues in both UBI and UBIFS:

   - more O_TMPFILE fallout

   - RENAME_WHITEOUT regression due to a mis-merge

   - memory leak in ubifs_mknod()

   - power-cut problem in UBI's update volume feature"

* tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs:
  ubifs: Fix O_TMPFILE corner case in ubifs_link()
  ubifs: Fix RENAME_WHITEOUT support
  ubifs: Fix debug messages for an invalid filename in ubifs_dump_inode
  ubifs: Fix debug messages for an invalid filename in ubifs_dump_node
  ubifs: Remove filename from debug messages in ubifs_readdir
  ubifs: Fix memory leak in error path in ubifs_mknod
  ubi/upd: Always flush after prepared for an update
2017-04-23 16:49:16 -07:00
Linus Torvalds
e0f4e0134a Merge branch 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS fix from Thomas Gleixner:
 "The MCE atomic notifier callchain invokes callbacks which might sleep.

  Convert it to a blocking notifier and prevent calls from atomic
  context"

* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Make the MCE notifier a blocking one
2017-04-23 12:51:42 -07:00
Linus Torvalds
fa8d7cdc84 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
 "The (hopefully) final fix for the irq affinity spreading logic"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/affinity: Fix calculating vectors to assign
2017-04-23 12:48:05 -07:00
Linus Torvalds
94836ecf1e Fix a 4.11 regression that triggers a BUG() on an attempt to use an
unsupported NFSv4 compound op.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJY+mlFAAoJECebzXlCjuG+eCMP/2r/lXdx91Kibg4/D/9OB+LW
 YmcyUH83iRq/F/V88yEMz5XMUTZ/UkZ3iSGSDObjhBK7oswAtZhC1KiWOiuI9ry4
 tcqZM3se7FQNpbwm2wvhtRmbjd2YOZfS3o32Uorhc/beMZzIzZhUb15pp5o3hOIy
 4aoxeUs6//B51fil4Ur0oeLI1EqUd3t+1z0ytyRRzSfORHF/QEiTTXSmmKK+K2XA
 t35XXYJE3SCLxQpWW/CHT/IODv6nsaM0rgN/kkmZUxAyaw2GXT7U6+mzkz3tSL8s
 AEqNUptCn2M3iAv/e6wgpO3BS49HR+Gdg+JxPilCcs+GniWu4zH3sE0HFjTuqQ23
 7u/NB4lkDqFs9pO1x4D5Y/69yXbs6jUHn+NMnhTZS85pTwU5o3RNhzwegoOfIp/3
 CY22R92ZLHEqb1/VTc7rpeuj3d9r7Swg3U8X7kDnn7XtAj2HlMqaHZfw2zjTIYBO
 wqKnikTDMHuzZ7MtegLld4oayNZO4hN7Vi01Npzgr3nkwvpFpz8Jbvsn8mMHvUq8
 ZYWoMfz5rbH20N7cnFUAtB5fm67U9smjb01uzx3m6ylh1SqTWxAoZPWluGJTv0IA
 JKEM4g4PSNOizhib6KI2PW0SngLkCWKLy463fDS2Mx/M7DBZf0j4697TDK21R5NB
 Pny/pwJT4mjLwePc/qt2
 =mSBF
 -----END PGP SIGNATURE-----

Merge tag 'nfsd-4.11-2' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfix from Bruce Fields:
 "Fix a 4.11 regression that triggers a BUG() on an attempt to use an
  unsupported NFSv4 compound op"

* tag 'nfsd-4.11-2' of git://linux-nfs.org/~bfields/linux:
  nfsd: fix oops on unsupported operation
2017-04-21 16:37:48 -07:00
Linus Torvalds
057a650bdc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Don't race in IPSEC dumps, from Yuejie Shi.

 2) Verify lengths properly in IPSEC reqeusts, from Herbert Xu.

 3) Fix out of bounds access in ipv6 segment routing code, from David
    Lebrun.

 4) Don't write into the header of cloned SKBs in smsc95xx driver, from
    James Hughes.

 5) Several other drivers have this bug too, fix them. From Eric
    Dumazet.

 6) Fix access to uninitialized data in TC action cookie code, from
    Wolfgang Bumiller.

 7) Fix double free in IPV6 segment routing, again from David Lebrun.

 8) Don't let userspace set the RTF_PCPU flag, oops. From David Ahern.

 9) Fix use after free in qrtr code, from Dan Carpenter.

10) Don't double-destroy devices in ip6mr code, from Nikolay
    Aleksandrov.

11) Don't pass out-of-range TX queue indices into drivers, from Tushar
    Dave.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
  netpoll: Check for skb->queue_mapping
  ip6mr: fix notification device destruction
  bpf, doc: update bpf maintainers entry
  net: qrtr: potential use after free in qrtr_sendmsg()
  bpf: Fix values type used in test_maps
  net: ipv6: RTF_PCPU should not be settable from userspace
  gso: Validate assumption of frag_list segementation
  kaweth: use skb_cow_head() to deal with cloned skbs
  ch9200: use skb_cow_head() to deal with cloned skbs
  lan78xx: use skb_cow_head() to deal with cloned skbs
  sr9700: use skb_cow_head() to deal with cloned skbs
  cx82310_eth: use skb_cow_head() to deal with cloned skbs
  smsc75xx: use skb_cow_head() to deal with cloned skbs
  ipv6: sr: fix double free of skb after handling invalid SRH
  MAINTAINERS: Add "B:" field for networking.
  net sched actions: allocate act cookie early
  qed: Fix issue in populating the PFC config paramters.
  qed: Fix possible system hang in the dcbnl-getdcbx() path.
  qed: Fix sending an invalid PFC error mask to MFW.
  qed: Fix possible error in populating max_tc field.
  ...
2017-04-21 13:20:47 -07:00
Tushar Dave
c70b17b775 netpoll: Check for skb->queue_mapping
Reducing real_num_tx_queues needs to be in sync with skb queue_mapping
otherwise skbs with queue_mapping greater than real_num_tx_queues
can be sent to the underlying driver and can result in kernel panic.

One such event is running netconsole and enabling VF on the same
device. Or running netconsole and changing number of tx queues via
ethtool on same device.

e.g.
Unable to handle kernel NULL pointer dereference
tsk->{mm,active_mm}->context = 0000000000001525
tsk->{mm,active_mm}->pgd = fff800130ff9a000
              \|/ ____ \|/
              "@'/ .. \`@"
              /_| \__/ |_\
                 \__U_/
kworker/48:1(475): Oops [#1]
CPU: 48 PID: 475 Comm: kworker/48:1 Tainted: G           OE
4.11.0-rc3-davem-net+ #7
Workqueue: events queue_process
task: fff80013113299c0 task.stack: fff800131132c000
TSTATE: 0000004480e01600 TPC: 00000000103f9e3c TNPC: 00000000103f9e40 Y:
00000000    Tainted: G           OE
TPC: <ixgbe_xmit_frame_ring+0x7c/0x6c0 [ixgbe]>
g0: 0000000000000000 g1: 0000000000003fff g2: 0000000000000000 g3:
0000000000000001
g4: fff80013113299c0 g5: fff8001fa6808000 g6: fff800131132c000 g7:
00000000000000c0
o0: fff8001fa760c460 o1: fff8001311329a50 o2: fff8001fa7607504 o3:
0000000000000003
o4: fff8001f96e63a40 o5: fff8001311d77ec0 sp: fff800131132f0e1 ret_pc:
000000000049ed94
RPC: <set_next_entity+0x34/0xb80>
l0: 0000000000000000 l1: 0000000000000800 l2: 0000000000000000 l3:
0000000000000000
l4: 000b2aa30e34b10d l5: 0000000000000000 l6: 0000000000000000 l7:
fff8001fa7605028
i0: fff80013111a8a00 i1: fff80013155a0780 i2: 0000000000000000 i3:
0000000000000000
i4: 0000000000000000 i5: 0000000000100000 i6: fff800131132f1a1 i7:
00000000103fa4b0
I7: <ixgbe_xmit_frame+0x30/0xa0 [ixgbe]>
Call Trace:
 [00000000103fa4b0] ixgbe_xmit_frame+0x30/0xa0 [ixgbe]
 [0000000000998c74] netpoll_start_xmit+0xf4/0x200
 [0000000000998e10] queue_process+0x90/0x160
 [0000000000485fa8] process_one_work+0x188/0x480
 [0000000000486410] worker_thread+0x170/0x4c0
 [000000000048c6b8] kthread+0xd8/0x120
 [0000000000406064] ret_from_fork+0x1c/0x2c
 [0000000000000000]           (null)
Disabling lock debugging due to kernel taint
Caller[00000000103fa4b0]: ixgbe_xmit_frame+0x30/0xa0 [ixgbe]
Caller[0000000000998c74]: netpoll_start_xmit+0xf4/0x200
Caller[0000000000998e10]: queue_process+0x90/0x160
Caller[0000000000485fa8]: process_one_work+0x188/0x480
Caller[0000000000486410]: worker_thread+0x170/0x4c0
Caller[000000000048c6b8]: kthread+0xd8/0x120
Caller[0000000000406064]: ret_from_fork+0x1c/0x2c
Caller[0000000000000000]:           (null)

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 15:45:19 -04:00
Nikolay Aleksandrov
723b929ca0 ip6mr: fix notification device destruction
Andrey Konovalov reported a BUG caused by the ip6mr code which is caused
because we call unregister_netdevice_many for a device that is already
being destroyed. In IPv4's ipmr that has been resolved by two commits
long time ago by introducing the "notify" parameter to the delete
function and avoiding the unregister when called from a notifier, so
let's do the same for ip6mr.

The trace from Andrey:
------------[ cut here ]------------
kernel BUG at net/core/dev.c:6813!
invalid opcode: 0000 [#1] SMP KASAN
Modules linked in:
CPU: 1 PID: 1165 Comm: kworker/u4:3 Not tainted 4.11.0-rc7+ #251
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
01/01/2011
Workqueue: netns cleanup_net
task: ffff880069208000 task.stack: ffff8800692d8000
RIP: 0010:rollback_registered_many+0x348/0xeb0 net/core/dev.c:6813
RSP: 0018:ffff8800692de7f0 EFLAGS: 00010297
RAX: ffff880069208000 RBX: 0000000000000002 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88006af90569
RBP: ffff8800692de9f0 R08: ffff8800692dec60 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000000 R12: ffff88006af90070
R13: ffff8800692debf0 R14: dffffc0000000000 R15: ffff88006af90000
FS:  0000000000000000(0000) GS:ffff88006cb00000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe7e897d870 CR3: 00000000657e7000 CR4: 00000000000006e0
Call Trace:
 unregister_netdevice_many.part.105+0x87/0x440 net/core/dev.c:7881
 unregister_netdevice_many+0xc8/0x120 net/core/dev.c:7880
 ip6mr_device_event+0x362/0x3f0 net/ipv6/ip6mr.c:1346
 notifier_call_chain+0x145/0x2f0 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x51/0x90 net/core/dev.c:1647
 call_netdevice_notifiers net/core/dev.c:1663
 rollback_registered_many+0x919/0xeb0 net/core/dev.c:6841
 unregister_netdevice_many.part.105+0x87/0x440 net/core/dev.c:7881
 unregister_netdevice_many net/core/dev.c:7880
 default_device_exit_batch+0x4fa/0x640 net/core/dev.c:8333
 ops_exit_list.isra.4+0x100/0x150 net/core/net_namespace.c:144
 cleanup_net+0x5a8/0xb40 net/core/net_namespace.c:463
 process_one_work+0xc04/0x1c10 kernel/workqueue.c:2097
 worker_thread+0x223/0x19c0 kernel/workqueue.c:2231
 kthread+0x35e/0x430 kernel/kthread.c:231
 ret_from_fork+0x31/0x40 arch/x86/entry/entry_64.S:430
Code: 3c 32 00 0f 85 70 0b 00 00 48 b8 00 02 00 00 00 00 ad de 49 89
47 78 e9 93 fe ff ff 49 8d 57 70 49 8d 5f 78 eb 9e e8 88 7a 14 fe <0f>
0b 48 8b 9d 28 fe ff ff e8 7a 7a 14 fe 48 b8 00 00 00 00 00
RIP: rollback_registered_many+0x348/0xeb0 RSP: ffff8800692de7f0
---[ end trace e0b29c57e9b3292c ]---

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 15:35:47 -04:00
Daniel Borkmann
cdb9049918 bpf, doc: update bpf maintainers entry
Add various related files that have been missing under
BPF entry covering essential parts of its infrastructure
and also add myself as co-maintainer.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 15:25:10 -04:00
Dan Carpenter
6f60f43810 net: qrtr: potential use after free in qrtr_sendmsg()
If skb_pad() fails then it frees the skb so we should check for errors.

Fixes: bdabad3e36 ("net: Add Qualcomm IPC router")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 15:19:27 -04:00
David Miller
89087c456f bpf: Fix values type used in test_maps
Maps of per-cpu type have their value element size adjusted to 8 if it
is specified smaller during various map operations.

This makes test_maps as a 32-bit binary fail, in fact the kernel
writes past the end of the value's array on the user's stack.

To be quite honest, I think the kernel should reject creation of a
per-cpu map that doesn't have a value size of at least 8 if that's
what the kernel is going to silently adjust to later.

If the user passed something smaller, it is a sizeof() calcualtion
based upon the type they will actually use (just like in this testcase
code) in later calls to the map operations.

Fixes: df570f5772 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY")
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
2017-04-21 15:16:46 -04:00
David Ahern
557c44be91 net: ipv6: RTF_PCPU should not be settable from userspace
Andrey reported a fault in the IPv6 route code:

kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Modules linked in:
CPU: 1 PID: 4035 Comm: a.out Not tainted 4.11.0-rc7+ #250
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff880069809600 task.stack: ffff880062dc8000
RIP: 0010:ip6_rt_cache_alloc+0xa6/0x560 net/ipv6/route.c:975
RSP: 0018:ffff880062dced30 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8800670561c0 RCX: 0000000000000006
RDX: 0000000000000003 RSI: ffff880062dcfb28 RDI: 0000000000000018
RBP: ffff880062dced68 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff880062dcfb28 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007feebe37e7c0(0000) GS:ffff88006cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000205a0fe4 CR3: 000000006b5c9000 CR4: 00000000000006e0
Call Trace:
 ip6_pol_route+0x1512/0x1f20 net/ipv6/route.c:1128
 ip6_pol_route_output+0x4c/0x60 net/ipv6/route.c:1212
...

Andrey's syzkaller program passes rtmsg.rtmsg_flags with the RTF_PCPU bit
set. Flags passed to the kernel are blindly copied to the allocated
rt6_info by ip6_route_info_create making a newly inserted route appear
as though it is a per-cpu route. ip6_rt_cache_alloc sees the flag set
and expects rt->dst.from to be set - which it is not since it is not
really a per-cpu copy. The subsequent call to __ip6_dst_alloc then
generates the fault.

Fix by checking for the flag and failing with EINVAL.

Fixes: d52d3997f8 ("ipv6: Create percpu rt6_info")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:55:33 -04:00
Ilan Tayari
43170c4e0b gso: Validate assumption of frag_list segementation
Commit 07b26c9454 ("gso: Support partial splitting at the frag_list
pointer") assumes that all SKBs in a frag_list (except maybe the last
one) contain the same amount of GSO payload.

This assumption is not always correct, resulting in the following
warning message in the log:
    skb_segment: too many frags

For example, mlx5 driver in Striding RQ mode creates some RX SKBs with
one frag, and some with 2 frags.
After GRO, the frag_list SKBs end up having different amounts of payload.
If this frag_list SKB is then forwarded, the aforementioned assumption
is violated.

Validate the assumption, and fall back to software GSO if it not true.

Change-Id: Ia03983f4a47b6534dd987d7a2aad96d54d46d212
Fixes: 07b26c9454 ("gso: Support partial splitting at the frag_list pointer")
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:30:29 -04:00
David S. Miller
918b70244f Merge branch 'skb_cow_head'
Eric Dumazet says:

====================
net: use skb_cow_head() to deal with cloned skbs

James Hughes found an issue with smsc95xx driver. Same problematic code
is found in other drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:07 -04:00
Eric Dumazet
39fba7835a kaweth: use skb_cow_head() to deal with cloned skbs
We can use skb_cow_head() to properly deal with clones,
especially the ones coming from TCP stack that allow their head being
modified. This avoids a copy.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:06 -04:00
Eric Dumazet
6bc6895bdd ch9200: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: 4a476bd6d1 ("usbnet: New driver for QinHeng CH9200 devices")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:06 -04:00
Eric Dumazet
d4ca735919 lan78xx: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: 55d7de9de6 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Cc: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:05 -04:00
Eric Dumazet
d532c1082f sr9700: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: c9b37458e9 ("USB2NET : SR9700 : One chip USB 1.1 USB2NET SR9700Device Driver Support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:05 -04:00
Eric Dumazet
a9e840a208 cx82310_eth: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: cc28a20e77 ("introduce cx82310_eth: Conexant CX82310-based ADSL router USB ethernet driver")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:05 -04:00
Eric Dumazet
b7c6d26758 smsc75xx: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: d0cad87170 ("smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:24:04 -04:00
David Lebrun
95b9b88d2d ipv6: sr: fix double free of skb after handling invalid SRH
The icmpv6_param_prob() function already does a kfree_skb(),
this patch removes the duplicate one.

Fixes: 1ababeba4a ("ipv6: implement dataplane support for rthdr type 4 (Segment Routing Header)")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 13:16:01 -04:00
Linus Torvalds
92b4fc7563 powerpc fixes for 4.11 #8
Just two fixes. The first fixes kprobing a stdu, and is marked for stable as
 it's been broken for ~ever. In hindsight this could have gone in next.
 
 The other is a fix for a change we merged this cycle, where if we take a certain
 exception when the kernel is running relocated (currently only used for kdump),
 we checkstop the box.
 
 Thanks to:
   Ravi Bangoria.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJY+YyZAAoJEFHr6jzI4aWA6iYP/iwHOwFrAVMKl/zN8f5Vq/Ci
 pNPhOJoWFNkKfNkjzqGZXleoB76jc342d3uDDCuGI65YZVFIrlCFc1k93hCrlZYS
 jU0dJX+RLFEqcqXbwGhsBLEUjT17R8kxzgQ1J8gHzsFUjvbo7c2u49e7WvGrmqB9
 +ksoqy81XfN9nkW4xDw+ME6bUcodW5rkxYNIPuZ0BUdnarPC/sdVvLPVzKuPwcRj
 56wlry8kIwTdhqUSA9pYDaq1BY80AEp8d2VFEVsibhiNyJjyDFVHX6t4k/9an7oD
 IXiqBVuMX7RnYnAI86aaaoqkZ8EOVeNX0A4U2XtQjGuu+avnwAlYaJ+cFvhbzWXX
 zfjX8XanuFc7+Yok4G5W6Rqlye6DB6Ep4Asj3S1Nihv/UHKToVfvtAd46pXmUf2e
 3Y+ut69AhT4aJZV4QGpJdUuh98xVR5dnmiAV/Yx+vKkcf3Bz2FzJ3OA/PGkevE0C
 M6hY8kjMI9cKFgN6WO5ziNFwAj4t2JHf78F7A5Fkp3I3H0FbDKqhU31Gp/Gnrv3L
 Giavyms78Z2+XVg+uxvXUIakKfnrWLao8HxwwCsfKKh9uhPoltM+I+5FI9mG3FSq
 XVyA81XqcSkH3Gq3Y5aYZI3cq7YOk3auiWKazQ9H4Fbpi342LiT0v9eIxaP4XxbC
 cY/QV6StaJ8cvQA/p2oL
 =yUj5
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Just two fixes.

  The first fixes kprobing a stdu, and is marked for stable as it's been
  broken for ~ever. In hindsight this could have gone in next.

  The other is a fix for a change we merged this cycle, where if we take
  a certain exception when the kernel is running relocated (currently
  only used for kdump), we checkstop the box.

  Thanks to Ravi Bangoria"

* tag 'powerpc-4.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64: Fix HMI exception on LE with CONFIG_RELOCATABLE=y
  powerpc/kprobe: Fix oops when kprobed on 'stdu' instruction
2017-04-21 09:34:45 -07:00
Linus Torvalds
fe7ba28933 pci-v4.11-fixes-5
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJY+jDWAAoJEFmIoMA60/r8QA0QALF2maWciwCps10R1rSMJOxn
 MIZbc5nXlgcI8jEnla05x5qGa/QSUmkq0zRF/RW4RbdshN1OZABlrcc4NFyJ50oL
 ARo7KBlXyDmWUBcXOKZsMMGsxLHexUl6BUoctedkUR83tfSoS36BA+DFvGZsyHAJ
 D3Nq/67VR+xR8OoZgXyd7pRirvVW0x6o2RbYXFV7au8p7ds13BWo3Xxwtn/2h+3p
 ybrdmEUFY9DGkLtULrHIWvcPK9LDBAU0uVU3pAzp6Ss6noVDLQH8d4+tyuUB5aIm
 /CGPDc9N89YWv4yyqVdvsPVJXbBg17byhO2kgKYrlNmt6Q/PFwMf4/cF1EWvgt/K
 eIWfNtTSVVa57Seb7B+AKN/leIwT++C19ZJvBWFtJVK+VCpmlsc5vtR0K2beIBI7
 p6lW5PbqlttfoQphKSnJy4Gf/2B+6jft+nzOydfei2Olnjsr4kkwSC9/UWBKbXiS
 Q/6S7clz3bBiPb8IxQArtaGzemPvsB7Gy55stTWXq3ux3IVLbpmzGspZBa30gKq8
 9H0bjPjY5c0gMGcvoCmd7+fZ4ZTqIsBWMQB/0O/iAZv4d42/BZS70khbRC7gXZ4c
 O3MVRyUL9ADx2Jysoy0Yg+Q//hB6t7xOZWMQRqmoMGxO2PtFgrObg0SwNrEW+K0b
 BFsHfZykauzjCOPZmeFx
 =qqfj
 -----END PGP SIGNATURE-----

Merge tag 'pci-v4.11-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Sorry this is so late. It's been in -next for over a week, but I
  forgot to send it on until now.

  A single fix to the DT binding of the HiSilicon PCIe host support"

* tag 'pci-v4.11-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: hisi: Fix DT binding (hisi-pcie-almost-ecam)
2017-04-21 09:26:34 -07:00
Linus Torvalds
a9aa1908e2 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
 "A couple of last minute fixes for regressions in this cycle. More
  specifically:

   - Two patches from Andy, adjusting the NVMe APST quirks to avoid some
     issues specific to one Toshiba drive, and some variant of Samsung
     on two specific Dell laptops.

   - A fix for mtip32xx, turning off mq scheduling on that device. We
     have a real fix for this, but it's too late in the cycle.
     Thankfully we already have a NO_SCHED flag we can apply here. A
     prep patch for this is ensuring that we honor the NO_SCHED flag
     when attempting to online switch schedulers, previsouly we only did
     so for drive load time. From Ming.

   - Fixing an oops in blk-mq polling with scheduling attached. This one
     is easily reproducible, it would be a shame to release 4.11 with
     that issue. From me.

  I'd prefer not having to send in patches at this point in time, but
  the above are all things that have regressed in this cycle and the
  fixes are relatively straight forward"

* 'for-linus' of git://git.kernel.dk/linux-block:
  blk-mq: fix potential oops with polling and blk-mq scheduler
  nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"
  nvme: Adjust the Samsung APST quirk
  mtip32xx: pass BLK_MQ_F_NO_SCHED
  block: respect BLK_MQ_F_NO_SCHED
2017-04-21 09:20:35 -07:00
Linus Torvalds
4664e3221b ACPI fix for final v4.11
- Avoid a false-positive warning regarding a variable that may not
    be initialized that started to trigger after a previous general
    build fix (Arnd Bergmann).
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJY+d0VAAoJEILEb/54YlRxh+kQAIO0Eegg7JMZrxVsMl+t53sY
 wBwUGUbeALZeh5H1xju0rH5mcyDtTCFc5ufPG46EPAoNog7o+hENOMcKkEOygf7c
 h3rzfY+L3+22mYTEtjy9g8/nSwGtzNNTSFXlx/XXWuu5sB+tum8zL6xxguUAOh1R
 v74Q+qi71UoEpWTQEiREun3+f3ze5pNG5qWas+prcK+GoPXlu2CiSbTY1IkGN5l0
 MTn1//hkj+UY9c38ZtHJyQmOqXx4RaHZv4GwtX3yspzCvqx0n2SsItxKBHO8vSaG
 H0w88Kmrc+lkrqfa28Uy5disiakqbFOTmmn+dC/M6UYQGWiwTejI6G3RuBdy1XKA
 PilJvu3gRdAJT1X79onC5Mum9OFO4lupG2s3X3G9vrU7tBUvqdfpERcCRoHMXsvj
 KYAExu9aQUGx1bPs9/3mjXwTjQJvP1l5sEl9fwfxp5/TovrcySqUWOs1xt95CEYd
 w74NIKPlomeC0UM4cfKXyohw8xD1GKgdXo6+Sq014FlFlYXn00jDIQwfZEwlG4Gb
 8ZyOfs3GFBdUyEZ4rL7RIJ4/JJa1MDYHohwqX1Mb67HjnZENY0PJ1CTaBfw8iH83
 rz3edw92Zr0QvOkeIj+ReDF4eZFndL3GzCOGewjJMXP+k6WpTLokzfbojIYN5w+K
 Clpnfz8DkK8bB4QcxF7Z
 =W+qr
 -----END PGP SIGNATURE-----

Merge tag 'acpi-4.11-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI build fix from Rafael Wysocki:
 "This avoids a false-positive build warning from the compiler.

  Specifics:

   - Avoid a false-positive warning regarding a variable that may not be
     initialized that started to trigger after a previous general build
     fix (Arnd Bergmann)"

* tag 'acpi-4.11-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / power: Avoid maybe-uninitialized warning
2017-04-21 09:18:17 -07:00
Linus Torvalds
11b211ede8 MMC core:
- kmalloc sdio scratch buffer to make it DMA-friendly
 
 MMC host:
  - dw_mmc: Fix behaviour for SDIO IRQs when runtime PM is used
  - sdhci-esdhc-imx: Correct pad I/O drive strength for UHS-DDR50 cards
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJY+cg7AAoJEP4mhCVzWIwpe+AP/RGstHkyUJkX0GEtwkZxRR+K
 1mXjq9sACIbB3ERp9U/3p5+sQUN9VYY3JXlq2nlUTjF0V80Cu0KuWcu/la4wt9Q9
 ARrl9ZKbmgfox/o2GWPNvF0tloJ1C0pPmfedUe2nGRtoRHbPwVGA7OT3XmQF4nz8
 6kJH98wfa51eaxwY2u50gP1urLO2ayu9eO+S4jaBj6HAFw4aoqJbzK8Hg/sCFSZ+
 N9pWooBVl5Km+xWFdgutofjK7C+C/qXmSuLWqrJhMnMtaXCkU9NkdTUiTmgQbHJU
 ZZ35gwTZqmidaGz99OTaf+o98XmXIQuGu2teS+v7bA20Ak78AnH/eueRS3lKGFE/
 LIfcdIGu/8063OKl6vNYVCG/G9ADSENeKtCHSf4dzXetuz4PWIudW3aIAV831EaX
 lRBY/cyTD5O0ns1NlfkEqvW0HlGxoViMsKqPhUznWSPG0lIVIMkNdKNY9kuNrlK9
 59RXusCxb4wEt95+EFycYsN5SEa+jer8b3mkZbpe0N7yn/NmLCY2cWpR5iWWn55z
 N5hh62vNy071wMQj6LYhBQ9J+PGTnnxTtOQ/WW8fT2m19ONmlIuAIRv5r3/cgWOS
 E9/6wOvl3cx9x3NxopdO5ygUED9LCaXH8w73c5YTSynqn3ZZRKg7T+O8lF07T57j
 NRXVe01w7dShecMTaL6x
 =XYxi
 -----END PGP SIGNATURE-----

Merge tag 'mmc-v4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:

   - kmalloc sdio scratch buffer to make it DMA-friendly

  MMC host:

   - dw_mmc: Fix behaviour for SDIO IRQs when runtime PM is used

   - sdhci-esdhc-imx: Correct pad I/O drive strength for UHS-DDR50
     cards"

* tag 'mmc-v4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-esdhc-imx: increase the pad I/O drive strength for DDR50 card
  mmc: dw_mmc: Don't allow Runtime PM for SDIO cards
  mmc: sdio: fix alignment issue in struct sdio_func
2017-04-21 09:15:43 -07:00
Linus Torvalds
4d4dfc1caa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixlet from Dmitry Torokhov:
 "An update to Elan PS/2 driver to allow working on yet another
  Lifebook"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elantech - add Fujitsu Lifebook E547 to force crc_enabled
2017-04-21 09:13:43 -07:00
David S. Miller
b0522e13b2 MAINTAINERS: Add "B:" field for networking.
We want people to report bugs to the netdev list.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 10:44:47 -04:00
Linus Torvalds
c154165e93 Merge branch 'akpm' (patches from Andrew)
Merge two mm fixes from Andrew Morton.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: prevent NR_ISOLATE_* stats from going negative
  Revert "mm, page_alloc: only use per-cpu allocator for irq-safe requests"
2017-04-20 15:31:08 -07:00
Rabin Vincent
fc280fe871 mm: prevent NR_ISOLATE_* stats from going negative
Commit 6afcf8ef0c ("mm, compaction: fix NR_ISOLATED_* stats for pfn
based migration") moved the dec_node_page_state() call (along with the
page_is_file_cache() call) to after putback_lru_page().

But page_is_file_cache() can change after putback_lru_page() is called,
so it should be called before putback_lru_page(), as it was before that
patch, to prevent NR_ISOLATE_* stats from going negative.

Without this fix, non-CONFIG_SMP kernels end up hanging in the
while(too_many_isolated()) { congestion_wait() } loop in
shrink_active_list() due to the negative stats.

 Mem-Info:
  active_anon:32567 inactive_anon:121 isolated_anon:1
  active_file:6066 inactive_file:6639 isolated_file:4294967295
                                                    ^^^^^^^^^^
  unevictable:0 dirty:115 writeback:0 unstable:0
  slab_reclaimable:2086 slab_unreclaimable:3167
  mapped:3398 shmem:18366 pagetables:1145 bounce:0
  free:1798 free_pcp:13 free_cma:0

Fixes: 6afcf8ef0c ("mm, compaction: fix NR_ISOLATED_* stats for pfn based migration")
Link: http://lkml.kernel.org/r/1492683865-27549-1-git-send-email-rabin.vincent@axis.com
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Ming Ling <ming.ling@spreadtrum.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-04-20 15:30:18 -07:00
Mel Gorman
d34b0733b4 Revert "mm, page_alloc: only use per-cpu allocator for irq-safe requests"
This reverts commit 374ad05ab6.

While the patch worked great for userspace allocations, the fact that
softirq loses the per-cpu allocator caused problems.  It needs to be
redone taking into account that a separate list is needed for hard/soft
IRQs or alternatively find a cheap way of detecting reentry due to an
interrupt.  Both are possible but sufficiently tricky that it shouldn't
be rushed.

Jesper had one method for allowing softirqs but reported that the cost
was high enough that it performed similarly to a plain revert.  His
figures for netperf TCP_STREAM were as follows

  Baseline v4.10.0  : 60316 Mbit/s
  Current 4.11.0-rc6: 47491 Mbit/s
  Jesper's patch    : 60662 Mbit/s
  This patch        : 60106 Mbit/s

As this is a regression, I wish to revert to noirq allocator for now and
go back to the drawing board.

Link: http://lkml.kernel.org/r/20170415145350.ixy7vtrzdzve57mh@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Tariq Toukan <ttoukan.linux@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-04-20 15:30:18 -07:00
Jens Axboe
3a07bb1d76 blk-mq: fix potential oops with polling and blk-mq scheduler
If we have a scheduler attached, blk_mq_tag_to_rq() on the
scheduled tags will return NULL if a request is no longer
in flight. This is different than using the normal tags,
where it will always return the fixed request. Check for
this condition for polling, in case we happen to enter
polling for a completed request.

The request address remains valid, so this check and return
should be perfectly safe.

Fixes: bd166ef183 ("blk-mq-sched: add framework for MQ capable IO schedulers")
Tested-by: Stephen Bates <sbates@raithlin.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-20 14:53:28 -06:00
Andy Lutomirski
be56945c4e nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"
There's a report that it malfunctions with APST on.

See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184

Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-20 14:42:10 -06:00
Andy Lutomirski
ff5350a86b nvme: Adjust the Samsung APST quirk
I got a couple more reports: the Samsung APST issues appears to
affect multiple 950-series devices in Dell XPS 15 9550 and Precision
5510 laptops.  Change the quirk: rather than blacklisting the
firmware on the first problematic SSD that was reported, disable
APST on all 144d:a802 devices if they're installed in the two
affected Dell models.  While we're at it, disable only the deepest
sleep state instead of all of them -- the reporters say that this is
sufficient to fix the problem.

(I have a device that appears to be entirely identical to one of the
affected devices, but I have a different Dell laptop, so it's not
the case that all Samsung devices with firmware BXW75D0Q are broken
under all circumstances.)

Samsung engineers have an affected system, and hopefully they'll
give us a better workaround some time soon.  In the mean time, this
should minimize regressions.

See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184

Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-20 14:42:09 -06:00
Wolfgang Bumiller
e0535ce58b net sched actions: allocate act cookie early
Policing filters do not use the TCA_ACT_* enum and the tb[]
nlattr array in tcf_action_init_1() doesn't get filled for
them so we should not try to look for a TCA_ACT_COOKIE
attribute in the then uninitialized array.
The error handling in cookie allocation then calls
tcf_hash_release() leading to invalid memory access later
on.
Additionally, if cookie allocation fails after an already
existing non-policing filter has successfully been changed,
tcf_action_release() should not be called, also we would
have to roll back the changes in the error handling, so
instead we now allocate the cookie early and assign it on
success at the end.

CVE-2017-7979
Fixes: 1045ba77a5 ("net sched actions: Add support for user cookies")
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:32:07 -04:00
David S. Miller
43af390573 Merge branch 'qed-dcbx-fixes'
Sudarsana Reddy Kalluru says:

====================
qed: Dcbx bug fixes

The series has set of bug fixes for dcbx implementation of qed driver.
Please consider applying this to 'net' branch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:29:41 -04:00
sudarsana.kalluru@cavium.com
c0c5dbe711 qed: Fix issue in populating the PFC config paramters.
Change ieee_setpfc() callback implementation to populate traffic class
count with the user provided value.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:29:40 -04:00
sudarsana.kalluru@cavium.com
62289ba275 qed: Fix possible system hang in the dcbnl-getdcbx() path.
qed_dcbnl_get_dcbx() API uses kmalloc in GFT_KERNEL mode. The API gets
invoked in the interrupt context by qed_dcbnl_getdcbx callback. Need
to invoke this kmalloc in atomic mode.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:29:40 -04:00
sudarsana.kalluru@cavium.com
6cf75f1ceb qed: Fix sending an invalid PFC error mask to MFW.
PFC error-mask value is not supported by MFW, but this bit could be
set in the pfc bit-map of the operational parameters if remote device
supports it. These operational parameters are used as basis for
populating the dcbx config parameters. User provided configs will be
applied on top of these parameters and then send them to MFW when
requested. Driver need to clear the error-mask bit before sending the
config parameters to MFW.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:29:39 -04:00
sudarsana.kalluru@cavium.com
66367dab30 qed: Fix possible error in populating max_tc field.
Some adapters may not publish the max_tc value. Populate the default
value for max_tc field in case the mfw didn't provide one.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:29:39 -04:00
James Hughes
e9156cd26a smsc95xx: Use skb_cow_head to deal with cloned skbs
The driver was failing to check that the SKB wasn't cloned
before adding checksum data.
Replace existing handling to extend/copy the header buffer
with skb_cow_head.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:27:15 -04:00
Sekhar Nori
74d209b835 MAINTAINERS: update entry for TI's CPSW driver
Mugunthan V N, who was reviewing TI's CPSW driver patches is
not working for TI anymore and wont be reviewing patches for
that driver.

Drop Mugunthan as the maintiainer for this driver.

Grygorii continues to be a reviewer. Dave Miller applies the
patches directly and adding a maintainer is actually
misleading since get_maintainer.pl script stops suggesting
that Dave Miller be copied.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-20 16:21:31 -04:00