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  1. 17 2月, 2017 1 次提交
  3. 16 2月, 2017 4 次提交
    • T
      ibmvnic: Fix endian errors in error reporting output · 75224c93
      由 Thomas Falcon 提交于 
      Error reports received from firmware were not being converted from
big endian values, leading to bogus error codes reported on little
endian systems.
Signed-off-by: NThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      75224c93
    • T
      ibmvnic: Fix endian error when requesting device capabilities · 28f4d165
      由 Thomas Falcon 提交于 
      When a vNIC client driver requests a faulty device setting, the
server returns an acceptable value for the client to request.
This 64 bit value was incorrectly being swapped as a 32 bit value,
resulting in loss of data. This patch corrects that by using
the 64 bit swap function.
Signed-off-by: NThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      28f4d165
    • A
      net: xilinx_emaclite: fix freezes due to unordered I/O · acf138f1
      由 Anssi Hannula 提交于 
      The xilinx_emaclite uses __raw_writel and __raw_readl for register
accesses. Those functions do not imply any kind of memory barriers and
they may be reordered.

The driver does not seem to take that into account, though, and the
driver does not satisfy the ordering requirements of the hardware.
For clear examples, see xemaclite_mdio_write() and xemaclite_mdio_read()
which try to set MDIO address before initiating the transaction.

I'm seeing system freezes with the driver with GCC 5.4 and current
Linux kernels on Zynq-7000 SoC immediately when trying to use the
interface.

In commit 123c1407 ("net: emaclite: Do not use microblaze and ppc
IO functions") the driver was switched from non-generic
in_be32/out_be32 (memory barriers, big endian) to
__raw_readl/__raw_writel (no memory barriers, native endian), so
apparently the device follows system endianness and the driver was
originally written with the assumption of memory barriers.

Rather than try to hunt for each case of missing barrier, just switch
the driver to use iowrite32/ioread32/iowrite32be/ioread32be depending
on endianness instead.

Tested on little-endian Zynq-7000 ARM SoC FPGA.
Signed-off-by: NAnssi Hannula <anssi.hannula@bitwise.fi>
Fixes: 123c1407 ("net: emaclite: Do not use microblaze and ppc IO
functions")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      acf138f1
    • A
      net: xilinx_emaclite: fix receive buffer overflow · cd224553
      由 Anssi Hannula 提交于 
      xilinx_emaclite looks at the received data to try to determine the
Ethernet packet length but does not properly clamp it if
proto_type == ETH_P_IP or 1500 < proto_type <= 1518, causing a buffer
overflow and a panic via skb_panic() as the length exceeds the allocated
skb size.

Fix those cases.

Also add an additional unconditional check with WARN_ON() at the end.
Signed-off-by: NAnssi Hannula <anssi.hannula@bitwise.fi>
Fixes: bb81b2dd ("net: add Xilinx emac lite device driver")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cd224553
  5. 15 2月, 2017 7 次提交
    • Y
      PCI/PME: Restore pcie_pme_driver.remove · afe3e4d1
      由 Yinghai Lu 提交于 
      In addition to making PME non-modular, d7def204 ("PCI/PME: Make
explicitly non-modular") removed the pcie_pme_driver .remove() method,
pcie_pme_remove().

pcie_pme_remove() freed the PME IRQ that was requested in pci_pme_probe().
The fact that we don't free the IRQ after d7def204 causes the following
crash when removing a PCIe port device via /sys:

  ------------[ cut here ]------------
  kernel BUG at drivers/pci/msi.c:370!
  invalid opcode: 0000 [#1] SMP
  Modules linked in:
  CPU: 1 PID: 14509 Comm: sh Tainted: G    W  4.8.0-rc1-yh-00012-gd29438d6
  RIP: 0010:[<ffffffff9758bbf5>]  free_msi_irqs+0x65/0x190
  ...
  Call Trace:
   [<ffffffff9758cda4>] pci_disable_msi+0x34/0x40
   [<ffffffff97583817>] cleanup_service_irqs+0x27/0x30
   [<ffffffff97583e9a>] pcie_port_device_remove+0x2a/0x40
   [<ffffffff97584250>] pcie_portdrv_remove+0x40/0x50
   [<ffffffff97576d7b>] pci_device_remove+0x4b/0xc0
   [<ffffffff9785ebe6>] __device_release_driver+0xb6/0x150
   [<ffffffff9785eca5>] device_release_driver+0x25/0x40
   [<ffffffff975702e4>] pci_stop_bus_device+0x74/0xa0
   [<ffffffff975704ea>] pci_stop_and_remove_bus_device_locked+0x1a/0x30
   [<ffffffff97578810>] remove_store+0x50/0x70
   [<ffffffff9785a378>] dev_attr_store+0x18/0x30
   [<ffffffff97260b64>] sysfs_kf_write+0x44/0x60
   [<ffffffff9725feae>] kernfs_fop_write+0x10e/0x190
   [<ffffffff971e13f8>] __vfs_write+0x28/0x110
   [<ffffffff970b0fa4>] ? percpu_down_read+0x44/0x80
   [<ffffffff971e53a7>] ? __sb_start_write+0xa7/0xe0
   [<ffffffff971e53a7>] ? __sb_start_write+0xa7/0xe0
   [<ffffffff971e1f04>] vfs_write+0xc4/0x180
   [<ffffffff971e3089>] SyS_write+0x49/0xa0
   [<ffffffff97001a46>] do_syscall_64+0xa6/0x1b0
   [<ffffffff9819201e>] entry_SYSCALL64_slow_path+0x25/0x25
  ...
   RIP  [<ffffffff9758bbf5>] free_msi_irqs+0x65/0x190
   RSP <ffff89ad3085bc48>
  ---[ end trace f4505e1dac5b95d3 ]---
  Segmentation fault

Restore pcie_pme_remove().

[bhelgaas: changelog]
Fixes: d7def204 ("PCI/PME: Make explicitly non-modular")
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: stable@vger.kernel.org	# v4.9+
      afe3e4d1
    • P
      drm/dp/mst: fix kernel oops when turning off secondary monitor · bb08c04d
      由 Pierre-Louis Bossart 提交于 
      100% reproducible issue found on SKL SkullCanyon NUC with two external
DP daisy-chained monitors in DP/MST mode. When turning off or changing
the input of the second monitor the machine stops with a kernel
oops. This issue happened with 4.8.8 as well as drm/drm-intel-nightly.

This issue is traced to an inconsistent control flow in
drm_dp_update_payload_part1(): the 'port' pointer is set to NULL at the
same time as 'req_payload.num_slots' is set to zero, but the pointer is
dereferenced even when req_payload.num_slot is zero.

The problematic dereference was introduced in commit dfda0df3
("drm/mst: rework payload table allocation to conform better") and may
impact all versions since v3.18

The fix suggested by Chris Wilson removes the kernel oops and was found to
work well after 10mn of monkey-testing with the second monitor power and
input buttons

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98990
Fixes: dfda0df3 ("drm/mst: rework payload table allocation to conform better.")
Cc: Dave Airlie <airlied@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Nathan D Ciobanu <nathan.d.ciobanu@linux.intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: <stable@vger.kernel.org> # v3.18+
Tested-by: NNathan D Ciobanu <nathan.d.ciobanu@linux.intel.com>
Reviewed-by: NDhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1487076561-2169-1-git-send-email-jani.nikula@intel.com
      bb08c04d
    • M
      [media] siano: make it work again with CONFIG_VMAP_STACK · f9c85ee6
      由 Mauro Carvalho Chehab 提交于 
      Reported as a Kaffeine bug:
	https://bugs.kde.org/show_bug.cgi?id=375811

The USB control messages require DMA to work. We cannot pass
a stack-allocated buffer, as it is not warranted that the
stack would be into a DMA enabled area.

On Kernel 4.9, the default is to not accept DMA on stack anymore
on x86 architecture. On other architectures, this has been a
requirement since Kernel 2.2. So, after this patch, this driver
should likely work fine on all archs.

Tested with USB ID 2040:5510: Hauppauge Windham

Cc: stable@vger.kernel.org
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
      f9c85ee6
    • T
      ibmvnic: Fix initial MTU settings · f39f0d1e
      由 Thomas Falcon 提交于 
      In the current driver, the MTU is set to the maximum value
capable for the backing device. This decision turned out to
be a mistake as it led to confusion among users. The expected
initial MTU value used for other IBM vNIC capable operating
systems is 1500, with the maximum value (9000) reserved for
when Jumbo frames are enabled. This patch sets the MTU to
the default value for a net device.

It also corrects a discrepancy between MTU values received from
firmware, which includes the ethernet header length, and net
device MTU values.

Finally, it removes redundant min/max MTU assignments after device
initialization.
Signed-off-by: NThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f39f0d1e
    • I
      net: ethernet: ti: cpsw: fix cpsw assignment in resume · a60ced99
      由 Ivan Khoronzhuk 提交于 
      There is a copy-paste error, which hides breaking of resume
for CPSW driver: there was replaced netdev_priv() to ndev_to_cpsw(ndev)
in suspend, but left it unchanged in resume.

Fixes: 606f3993
(ti: cpsw: move platform data and slaves info to cpsw_common)
Reported-by: NAlexey Starikovskiy <AStarikovskiy@topcon.com>
Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a60ced99
    • R
      net: fec: fix multicast filtering hardware setup · 01f8902b
      由 Rui Sousa 提交于 
      Fix hardware setup of multicast address hash:
- Never clear the hardware hash (to avoid packet loss)
- Construct the hash register values in software and then write once
to hardware
Signed-off-by: NRui Sousa <rui.sousa@nxp.com>
Signed-off-by: NFugang Duan <fugang.duan@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      01f8902b
    • O
      net/mlx5e: Disable preemption when doing TC statistics upcall · fed06ee8
      由 Or Gerlitz 提交于 
      When called by HW offloading drivers, the TC action (e.g
net/sched/act_mirred.c) code uses this_cpu logic, e.g

 _bstats_cpu_update(this_cpu_ptr(a->cpu_bstats), bytes, packets)

per the kernel documention, preemption should be disabled, add that.

Before the fix, when running with CONFIG_PREEMPT set, we get a

BUG: using smp_processor_id() in preemptible [00000000] code: tc/3793

asserion from the TC action (mirred) stats_update callback.

Fixes: aad7e08d ('net/mlx5e: Hardware offloaded flower filter statistics support')
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      fed06ee8
  7. 14 2月, 2017 2 次提交
  9. 12 2月, 2017 2 次提交
  11. 11 2月, 2017 3 次提交
  13. 10 2月, 2017 11 次提交
  15. 09 2月, 2017 10 次提交
    • D
      Revert "hwrng: core - zeroize buffers with random data" · 3b802c94
      由 David Daney 提交于 
      This reverts commit 2cc75154.

With this commit in place I get on a Cavium ThunderX (arm64) system:

$ if=/dev/hwrng bs=256 count=1 | od -t x1 -A x -v > rng-bad.txt
1+0 records in
1+0 records out
256 bytes (256 B) copied, 9.1171e-05 s, 2.8 MB/s
$ dd if=/dev/hwrng bs=256 count=1 | od -t x1 -A x -v >> rng-bad.txt
1+0 records in
1+0 records out
256 bytes (256 B) copied, 9.6141e-05 s, 2.7 MB/s
$ cat rng-bad.txt
000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000050 00 00 00 00 37 20 46 ae d0 fc 1c 55 25 6e b0 b8
000060 7c 7e d7 d4 00 0f 6f b2 91 1e 30 a8 fa 3e 52 0e
000070 06 2d 53 30 be a1 20 0f aa 56 6e 0e 44 6e f4 35
000080 b7 6a fe d2 52 70 7e 58 56 02 41 ea d1 9c 6a 6a
000090 d1 bd d8 4c da 35 45 ef 89 55 fc 59 d5 cd 57 ba
0000a0 4e 3e 02 1c 12 76 43 37 23 e1 9f 7a 9f 9e 99 24
0000b0 47 b2 de e3 79 85 f6 55 7e ad 76 13 4f a0 b5 41
0000c0 c6 92 42 01 d9 12 de 8f b4 7b 6e ae d7 24 fc 65
0000d0 4d af 0a aa 36 d9 17 8d 0e 8b 7a 3b b6 5f 96 47
0000e0 46 f7 d8 ce 0b e8 3e c6 13 a6 2c b6 d6 cc 17 26
0000f0 e3 c3 17 8e 9e 45 56 1e 41 ef 29 1a a8 65 c8 3a
000100
000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000050 00 00 00 00 f4 90 65 aa 8b f2 5e 31 01 53 b4 d4
000060 06 c0 23 a2 99 3d 01 e4 b0 c1 b1 55 0f 80 63 cf
000070 33 24 d8 3a 1d 5e cd 2c ba c0 d0 18 6f bc 97 46
000080 1e 19 51 b1 90 15 af 80 5e d1 08 0d eb b0 6c ab
000090 6a b4 fe 62 37 c5 e1 ee 93 c3 58 78 91 2a d5 23
0000a0 63 50 eb 1f 3b 84 35 18 cf b2 a4 b8 46 69 9e cf
0000b0 0c 95 af 03 51 45 a8 42 f1 64 c9 55 fc 69 76 63
0000c0 98 9d 82 fa 76 85 24 da 80 07 29 fe 4e 76 0c 61
0000d0 ff 23 94 4f c8 5c ce 0b 50 e8 31 bc 9d ce f4 ca
0000e0 be ca 28 da e6 fa cc 64 1c ec a8 41 db fe 42 bd
0000f0 a0 e2 4b 32 b4 52 ba 03 70 8e c1 8e d0 50 3a c6
000100

To my untrained mental entropy detector, the first several bytes of
each read from /dev/hwrng seem to not be very random (i.e. all zero).

When I revert the patch (apply this patch), I get back to what we have
in v4.9, which looks like (much more random appearing):

$ dd if=/dev/hwrng bs=256 count=1 | od -t x1 -A x -v > rng-good.txt
1+0 records in
1+0 records out
256 bytes (256 B) copied, 0.000252233 s, 1.0 MB/s
$ dd if=/dev/hwrng bs=256 count=1 | od -t x1 -A x -v >> rng-good.txt
1+0 records in
1+0 records out
256 bytes (256 B) copied, 0.000113571 s, 2.3 MB/s
$ cat rng-good.txt
000000 75 d1 2d 19 68 1f d2 26 a1 49 22 61 66 e8 09 e5
000010 e0 4e 10 d0 1a 2c 45 5d 59 04 79 8e e2 b7 2c 2e
000020 e8 ad da 34 d5 56 51 3d 58 29 c7 7a 8e ed 22 67
000030 f9 25 b9 fb c6 b7 9c 35 1f 84 21 35 c1 1d 48 34
000040 45 7c f6 f1 57 63 1a 88 38 e8 81 f0 a9 63 ad 0e
000050 be 5d 3e 74 2e 4e cb 36 c2 01 a8 14 e1 38 e1 bb
000060 23 79 09 56 77 19 ff 98 e8 44 f3 27 eb 6e 0a cb
000070 c9 36 e3 2a 96 13 07 a0 90 3f 3b bd 1d 04 1d 67
000080 be 33 14 f8 02 c2 a4 02 ab 8b 5b 74 86 17 f0 5e
000090 a1 d7 aa ef a6 21 7b 93 d1 85 86 eb 4e 8c d0 4c
0000a0 56 ac e4 45 27 44 84 9f 71 db 36 b9 f7 47 d7 b3
0000b0 f2 9c 62 41 a3 46 2b 5b e3 80 63 a4 35 b5 3c f4
0000c0 bc 1e 3a ad e4 59 4a 98 6c e8 8d ff 1b 16 f8 52
0000d0 05 5c 2f 52 2a 0f 45 5b 51 fb 93 97 a4 49 4f 06
0000e0 f3 a0 d1 1e ba 3d ed a7 60 8f bb 84 2c 21 94 2d
0000f0 b3 66 a6 61 1e 58 30 24 85 f8 c8 18 c3 77 00 22
000100
000000 73 ca cc a1 d9 bb 21 8d c3 5c f3 ab 43 6d a7 a4
000010 4a fd c5 f4 9c ba 4a 0f b1 2e 19 15 4e 84 26 e0
000020 67 c9 f2 52 4d 65 1f 81 b7 8b 6d 2b 56 7b 99 75
000030 2e cd d0 db 08 0c 4b df f3 83 c6 83 00 2e 2b b8
000040 0f af 61 1d f2 02 35 74 b5 a4 6f 28 f3 a1 09 12
000050 f2 53 b5 d2 da 45 01 e5 12 d6 46 f8 0b db ed 51
000060 7b f4 0d 54 e0 63 ea 22 e2 1d d0 d6 d0 e7 7e e0
000070 93 91 fb 87 95 43 41 28 de 3d 8b a3 a8 8f c4 9e
000080 30 95 12 7a b2 27 28 ff 37 04 2e 09 7c dd 7c 12
000090 e1 50 60 fb 6d 5f a8 65 14 40 89 e3 4c d2 87 8f
0000a0 34 76 7e 66 7a 8e 6b a3 fc cf 38 52 2e f9 26 f0
0000b0 98 63 15 06 34 99 b2 88 4f aa d8 14 88 71 f1 81
0000c0 be 51 11 2b f4 7e a0 1e 12 b2 44 2e f6 8d 84 ea
0000d0 63 82 2b 66 b3 9a fd 08 73 5a c2 cc ab 5a af b1
0000e0 88 e3 a6 80 4b fc db ed 71 e0 ae c0 0a a4 8c 35
0000f0 eb 89 f9 8a 4b 52 59 6f 09 7c 01 3f 56 e7 c7 bf
000100
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      3b802c94
    • J
      mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers · 0911d004
      由 Jan Kara 提交于 
      Some ->page_mkwrite handlers may return VM_FAULT_RETRY as its return
code (GFS2 or Lustre can definitely do this).  However VM_FAULT_RETRY
from ->page_mkwrite is completely unhandled by the mm code and results
in locking and writeably mapping the page which definitely is not what
the caller wanted.

Fix Lustre and block_page_mkwrite_ret() used by other filesystems
(notably GFS2) to return VM_FAULT_NOPAGE instead which results in
bailing out from the fault code, the CPU then retries the access, and we
fault again effectively doing what the handler wanted.

Link: http://lkml.kernel.org/r/20170203150729.15863-1-jack@suse.czSigned-off-by: NJan Kara <jack@suse.cz>
Reported-by: NAl Viro <viro@ZenIV.linux.org.uk>
Reviewed-by: NJinshan Xiong <jinshan.xiong@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0911d004
    • A
      drm: vc4: adapt to new behaviour of drm_crtc.c · 49d29a07
      由 Andrzej Pietrasiewicz 提交于 
      When drm_crtc_init_with_planes() was orignally added
(in drm_crtc.c, e13161af
drm: Add drm_crtc_init_with_planes() (v2)), it only checked for "primary"
being non-null. If that was the case, it modified primary->possible_crtcs.

Then, when support for cursor planes was added
(fc1d3e44 drm: Allow drivers to register
cursor planes with crtc), the same behaviour was implemented for cursor
planes.

vc4_plane_init() since its inception has passed 0xff as "possible_crtcs"
parameter to drm_universal_plane_init(). With a change in drm_crtc.c
(7abc7d47 drm: don't override
possible_crtcs for primary/cursor planes) passing 0xff results in primary's
possible_crtcs set to 0xff (cursor was updated manually by vc4_crtc.c).
Consequently, it would be allowed to use the primary plane from CRTC 1 (for
example) on CRTC 0, which would result in the overlay and cursors being
buried.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Reviewed-by: NEric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/1485941708-27892-1-git-send-email-andrzej.p@samsung.com
Fixes: 7abc7d47 ("drm: don't override possible_crtcs for primary/cursor planes")
      49d29a07
    • T
      net: thunderx: Fix PHY autoneg for SGMII QLM mode · 075ad765
      由 Thanneeru Srinivasulu 提交于 
      This patch fixes the case where there is no phydev attached
to a LMAC in DT due to non-existance of a PHY driver or due
to usage of non-stanadard PHY which doesn't support autoneg.
Changes dependeds on firmware to send correct info w.r.t
PHY and autoneg capability.

This patch also covers a case where a 10G/40G interface is used
as a 1G with convertors with Cortina PHY in between.
Signed-off-by: NThanneeru Srinivasulu <tsrinivasulu@cavium.com>
Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      075ad765
    • W
      net: introduce device min_header_len · 217e6fa2
      由 Willem de Bruijn 提交于 
      The stack must not pass packets to device drivers that are shorter
than the minimum link layer header length.

Previously, packet sockets would drop packets smaller than or equal
to dev->hard_header_len, but this has false positives. Zero length
payload is used over Ethernet. Other link layer protocols support
variable length headers. Support for validation of these protocols
removed the min length check for all protocols.

Introduce an explicit dev->min_header_len parameter and drop all
packets below this value. Initially, set it to non-zero only for
Ethernet and loopback. Other protocols can follow in a patch to
net-next.

Fixes: 9ed988cd ("packet: validate variable length ll headers")
Reported-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: NWillem de Bruijn <willemb@google.com>
Acked-by: NEric Dumazet <edumazet@google.com>
Acked-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      217e6fa2
    • B
      ibmvscsis: Add SGL limit · b22bc278
      由 Bryant G. Ly 提交于 
      This patch adds internal LIO sgl limit since the driver already
sets a max transfer limit on transport layer of 1MB to the client.

Cc: stable@vger.kernel.org
Tested-by: NSteven Royer <seroyer@linux.vnet.ibm.com>
Signed-off-by: NBryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
      b22bc278
    • E
      IB/rxe: Fix mem_check_range integer overflow · 647bf3d8
      由 Eyal Itkin 提交于 
      Update the range check to avoid integer-overflow in edge case.
Resolves CVE 2016-8636.
Signed-off-by: NEyal Itkin <eyal.itkin@gmail.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>
      647bf3d8
    • E
      IB/rxe: Fix resid update · 628f07d3
      由 Eyal Itkin 提交于 
      Update the response's resid field when larger than MTU, instead of only
updating the local resid variable.

Fixes: 8700e3e7 ("Soft RoCE driver")
Signed-off-by: NEyal Itkin <eyal.itkin@gmail.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>
      628f07d3
    • N
      target: Fix COMPARE_AND_WRITE ref leak for non GOOD status · 9b2792c3
      由 Nicholas Bellinger 提交于 
      This patch addresses a long standing bug where the commit phase
of COMPARE_AND_WRITE would result in a se_cmd->cmd_kref reference
leak if se_cmd->scsi_status returned non SAM_STAT_GOOD.

This would manifest first as a lost SCSI response, and eventual
hung task during fabric driver logout or re-login, as existing
shutdown logic waited for the COMPARE_AND_WRITE se_cmd->cmd_kref
to reach zero.

To address this bug, compare_and_write_post() has been changed
to drop the incorrect !cmd->scsi_status conditional that was
preventing *post_ret = 1 for being set during non SAM_STAT_GOOD
status.

This patch has been tested with SAM_STAT_CHECK_CONDITION status
from normal target_complete_cmd() callback path, as well as the
incoming __target_execute_cmd() submission failure path when
se_cmd->execute_cmd() returns non zero status.
Reported-by: NDonald White <dew@datera.io>
Cc: Donald White <dew@datera.io>
Tested-by: NGary Guo <ghg@datera.io>
Cc: Gary Guo <ghg@datera.io>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org> # v3.12+
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
      9b2792c3
    • N
      target: Fix multi-session dynamic se_node_acl double free OOPs · 01d4d673
      由 Nicholas Bellinger 提交于 
      This patch addresses a long-standing bug with multi-session
(eg: iscsi-target + iser-target) se_node_acl dynamic free
withini transport_deregister_session().

This bug is caused when a storage endpoint is configured with
demo-mode (generate_node_acls = 1 + cache_dynamic_acls = 1)
initiators, and initiator login creates a new dynamic node acl
and attaches two sessions to it.

After that, demo-mode for the storage instance is disabled via
configfs (generate_node_acls = 0 + cache_dynamic_acls = 0) and
the existing dynamic acl is never converted to an explicit ACL.

The end result is dynamic acl resources are released twice when
the sessions are shutdown in transport_deregister_session().

If the storage instance is not changed to disable demo-mode,
or the dynamic acl is converted to an explict ACL, or there
is only a single session associated with the dynamic ACL,
the bug is not triggered.

To address this big, move the release of dynamic se_node_acl
memory into target_complete_nacl() so it's only freed once
when se_node_acl->acl_kref reaches zero.

(Drop unnecessary list_del_init usage - HCH)
Reported-by: NRob Millner <rlm@daterainc.com>
Tested-by: NRob Millner <rlm@daterainc.com>
Cc: Rob Millner <rlm@daterainc.com>
Cc: stable@vger.kernel.org # 4.1+
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
      01d4d673