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Filename Latest commit message Latest commit date
Jakub Kicinski 0f424eda47 mlx4: disable device on shutdown 
[ Upstream commit 3cab8c65525920f00d8f4997b3e9bb73aecb3a8e ]

It appears that not disabling a PCI device on .shutdown may lead to
a Hardware Error with particular (perhaps buggy) BIOS versions:

    mlx4_en: eth0: Close port called
    mlx4_en 0000:04:00.0: removed PHC
    reboot: Restarting system
    {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1
    {1}[Hardware Error]: event severity: fatal
    {1}[Hardware Error]:  Error 0, type: fatal
    {1}[Hardware Error]:   section_type: PCIe error
    {1}[Hardware Error]:   port_type: 4, root port
    {1}[Hardware Error]:   version: 1.16
    {1}[Hardware Error]:   command: 0x4010, status: 0x0143
    {1}[Hardware Error]:   device_id: 0000:00:02.2
    {1}[Hardware Error]:   slot: 0
    {1}[Hardware Error]:   secondary_bus: 0x04
    {1}[Hardware Error]:   vendor_id: 0x8086, device_id: 0x2f06
    {1}[Hardware Error]:   class_code: 000604
    {1}[Hardware Error]:   bridge: secondary_status: 0x2000, control: 0x0003
    {1}[Hardware Error]:   aer_uncor_status: 0x00100000, aer_uncor_mask: 0x00000000
    {1}[Hardware Error]:   aer_uncor_severity: 0x00062030
    {1}[Hardware Error]:   TLP Header: 40000018 040000ff 791f4080 00000000
[hw error repeats]
    Kernel panic - not syncing: Fatal hardware error!
    CPU: 0 PID: 2189 Comm: reboot Kdump: loaded Not tainted 5.6.x-blabla #1
    Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 05/05/2017

Fix the mlx4 driver.

This is a very similar problem to what had been fixed in:
commit 0d98ba8d70 ("scsi: hpsa: disable device during shutdown")
to address https://bugzilla.kernel.org/show_bug.cgi?id=199779.

Fixes: 2ba5fbd62b ("net/mlx4_core: Handle AER flow properly")
Reported-by: Jake Lawrence <lawja@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-05 09:59:47 +02:00
arch sh: Fix validation of system call number 2020-08-05 09:59:46 +02:00
block block: fix get_max_segment_size() overflow on 32bit arch 2020-07-22 09:33:17 +02:00
certs
crypto keys: asymmetric: fix error return code in software_key_query() 2020-07-22 09:33:04 +02:00
Documentation doc: dt: bindings: usb: dwc3: Update entries for disabling SS instances in park mode 2020-07-22 09:32:59 +02:00
drivers mlx4: disable device on shutdown 2020-08-05 09:59:47 +02:00
fs Revert "cifs: Fix the target file was deleted when rename failed." 2020-07-29 10:18:41 +02:00
include rhashtable: Fix unprotected RCU dereference in __rht_ptr 2020-08-05 09:59:47 +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 uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression 2020-07-29 10:18:29 +02:00
lib test_objagg: Fix potential memory leak in error handling 2020-06-30 15:37:04 -04:00
LICENSES
mm mm/filemap.c: don't bother dropping mmap_sem for zero size readahead 2020-08-05 09:59:41 +02:00
net xfrm: policy: match with both mark and mask on user interfaces 2020-08-05 09:59:44 +02:00
samples samples/vfs: avoid warning in statx override 2020-07-09 09:37:54 +02:00
scripts scripts/gdb: fix lx-symbols 'gdb.error' while loading modules 2020-07-29 10:18:35 +02:00
security apparmor: ensure that dfa state tables have entries 2020-07-22 09:33:05 +02:00
sound ALSA: hda/hdmi: Fix keep_power assignment for non-component devices 2020-08-05 09:59:42 +02:00
tools selftests/net: so_txtime: fix clang issues for target arch PowerPC 2020-08-05 09:59:45 +02:00
usr
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +02:00
.clang-format
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Makefile Linux 5.4.55 2020-07-31 18:39:32 +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.