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Filename Latest commit message Latest commit date
Grzegorz Szczurek c0e04d08e5 i40e: Fix crash during removing i40e driver 
[ Upstream commit 5b6d4a7f20b09c47ca598760f6dafd554af8b6d5 ]

Fix the reason of crashing system by add waiting time to finish reset
recovery process before starting remove driver procedure.
Now VSI is releasing if VSI is not in reset recovery mode.
Without this fix it was possible to start remove driver if other
processing command need reset recovery procedure which resulted in
null pointer dereference. VSI used by the ethtool process has been
cleared by remove driver process.

[ 6731.508665] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 6731.508668] #PF: supervisor read access in kernel mode
[ 6731.508670] #PF: error_code(0x0000) - not-present page
[ 6731.508671] PGD 0 P4D 0
[ 6731.508674] Oops: 0000 [#1] SMP PTI
[ 6731.508679] Hardware name: Intel Corporation S2600WT2R/S2600WT2R, BIOS SE5C610.86B.01.01.0021.032120170601 03/21/2017
[ 6731.508694] RIP: 0010:i40e_down+0x252/0x310 [i40e]
[ 6731.508696] Code: c7 78 de fa c0 e8 61 02 3a c1 66 83 bb f6 0c 00 00 00 0f 84 bf 00 00 00 45 31 e4 45 31 ff eb 03 41 89 c7 48 8b 83 98 0c 00 00 <4a> 8b 3c 20 e8 a5 79 02 00 48 83 bb d0 0c 00 00 00 74 10 48 8b 83
[ 6731.508698] RSP: 0018:ffffb75ac7b3faf0 EFLAGS: 00010246
[ 6731.508700] RAX: 0000000000000000 RBX: ffff9c9874bd5000 RCX: 0000000000000007
[ 6731.508701] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff9c987f4d9780
[ 6731.508703] RBP: ffffb75ac7b3fb30 R08: 0000000000005b60 R09: 0000000000000004
[ 6731.508704] R10: ffffb75ac64fbd90 R11: 0000000000000001 R12: 0000000000000000
[ 6731.508706] R13: ffff9c97a08e0000 R14: ffff9c97a08e0a68 R15: 0000000000000000
[ 6731.508708] FS:  00007f2617cd2740(0000) GS:ffff9c987f4c0000(0000) knlGS:0000000000000000
[ 6731.508710] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6731.508711] CR2: 0000000000000000 CR3: 0000001e765c4006 CR4: 00000000003606e0
[ 6731.508713] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6731.508714] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6731.508715] Call Trace:
[ 6731.508734]  i40e_vsi_close+0x84/0x90 [i40e]
[ 6731.508742]  i40e_quiesce_vsi.part.98+0x3c/0x40 [i40e]
[ 6731.508749]  i40e_pf_quiesce_all_vsi+0x55/0x60 [i40e]
[ 6731.508757]  i40e_prep_for_reset+0x59/0x130 [i40e]
[ 6731.508765]  i40e_reconfig_rss_queues+0x5a/0x120 [i40e]
[ 6731.508774]  i40e_set_channels+0xda/0x170 [i40e]
[ 6731.508778]  ethtool_set_channels+0xe9/0x150
[ 6731.508781]  dev_ethtool+0x1b94/0x2920
[ 6731.508805]  dev_ioctl+0xc2/0x590
[ 6731.508811]  sock_do_ioctl+0xae/0x150
[ 6731.508813]  sock_ioctl+0x34f/0x3c0
[ 6731.508821]  ksys_ioctl+0x98/0xb0
[ 6731.508828]  __x64_sys_ioctl+0x1a/0x20
[ 6731.508831]  do_syscall_64+0x57/0x1c0
[ 6731.508835]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 4b8164467b ("i40e: Add common function for finding VSI by type")
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-26 10:41:01 +02:00
arch alpha: fix annotation of io{read,write}{16,32}be() 2020-08-26 10:40:58 +02:00
block iocost: Fix check condition of iocg abs_vdebt 2020-08-19 08:15:58 +02:00
certs PKCS#7: Refactor verify_pkcs7_signature() 2019-08-05 18:40:18 -04:00
crypto crypto: algif_aead - fix uninitialized ctx->init 2020-08-21 13:05:38 +02:00
Documentation kbuild: support LLVM=1 to switch the default tools to Clang/LLVM 2020-08-26 10:40:47 +02:00
drivers i40e: Fix crash during removing i40e driver 2020-08-26 10:41:01 +02:00
fs ext4: don't allow overlapping system zones 2020-08-26 10:40:58 +02:00
include iommu/vt-d: Enforce PASID devTLB field mask 2020-08-21 13:05:34 +02:00
init x86: Fix early boot crash on gcc-10, third try 2020-05-20 08:20:34 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel kthread: Do not preempt current task if it is going to call schedule() 2020-08-26 10:40:53 +02:00
lib test_kmod: avoid potential double free in trigger_config_run_type() 2020-08-21 13:05:37 +02:00
LICENSES
mm mm, page_alloc: fix core hung in free_pcppages_bulk() 2020-08-26 10:40:51 +02:00
net can: j1939: transport: add j1939_session_skb_find_by_offset() function 2020-08-26 10:41:00 +02:00
samples bpf: Fix fds_example SIGSEGV error 2020-08-19 08:16:03 +02:00
scripts recordmcount: Fix build failure on non arm64 2020-08-21 13:05:36 +02:00
security Smack: prevent underflow in smk_set_cipso() 2020-08-19 08:16:16 +02:00
sound ASoC: q6routing: add dummy register read/write function 2020-08-26 10:40:59 +02:00
tools tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference 2020-08-26 10:40:57 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: Don't inherit exec permission across page-table levels 2020-08-05 09:59:51 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Modules updates for v5.4 2019-09-22 10:34:46 -07:00
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild kbuild: do not descend to ./Kbuild when cleaning 2019-08-21 21:03:58 +09:00
Kconfig docs: kbuild: convert docs to ReST and rename to *.rst 2019-06-14 14:21:21 -06:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile kbuild: support LLVM=1 to switch the default tools to Clang/LLVM 2020-08-26 10:40:47 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.