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Filename Latest commit message Latest commit date
Jakub Kicinski 5555ee33b6 ethernet: alx: fix order of calls on resume 
commit a4dcfbc4ee2218abd567d81d795082d8d4afcdf6 upstream.

netif_device_attach() will unpause the queues so we can't call
it before __alx_open(). This went undetected until
commit b0999223f2 ("alx: add ability to allocate and free
alx_napi structures") but now if stack tries to xmit immediately
on resume before __alx_open() we'll crash on the NAPI being null:

 BUG: kernel NULL pointer dereference, address: 0000000000000198
 CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G           OE 5.10.0-3-amd64 #1 Debian 5.10.13-1
 Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77-D3H, BIOS F15 11/14/2013
 RIP: 0010:alx_start_xmit+0x34/0x650 [alx]
 Code: 41 56 41 55 41 54 55 53 48 83 ec 20 0f b7 57 7c 8b 8e b0
0b 00 00 39 ca 72 06 89 d0 31 d2 f7 f1 89 d2 48 8b 84 df
 RSP: 0018:ffffb09240083d28 EFLAGS: 00010297
 RAX: 0000000000000000 RBX: ffffa04d80ae7800 RCX: 0000000000000004
 RDX: 0000000000000000 RSI: ffffa04d80afa000 RDI: ffffa04e92e92a00
 RBP: 0000000000000042 R08: 0000000000000100 R09: ffffa04ea3146700
 R10: 0000000000000014 R11: 0000000000000000 R12: ffffa04e92e92100
 R13: 0000000000000001 R14: ffffa04e92e92a00 R15: ffffa04e92e92a00
 FS:  0000000000000000(0000) GS:ffffa0508f600000(0000) knlGS:0000000000000000
 i915 0000:00:02.0: vblank wait timed out on crtc 0
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000198 CR3: 000000004460a001 CR4: 00000000001706f0
 Call Trace:
  dev_hard_start_xmit+0xc7/0x1e0
  sch_direct_xmit+0x10f/0x310

Cc: <stable@vger.kernel.org> # 4.9+
Fixes: bc2bebe8de ("alx: remove WoL support")
Reported-by: Zbynek Michl <zbynek.michl@gmail.com>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=983595
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tested-by: Zbynek Michl <zbynek.michl@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-17 17:03:30 +01:00
arch powerpc/pseries: Don't enforce MSI affinity with kdump 2021-03-17 17:03:30 +01:00
block blk-settings: align max_sectors on "logical_block_size" boundary 2021-03-04 10:26:40 +01:00
certs
crypto crypto: tcrypt - avoid signed overflow in byte count 2021-03-07 12:20:46 +01:00
Documentation sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output 2021-03-07 12:20:48 +01:00
drivers ethernet: alx: fix order of calls on resume 2021-03-17 17:03:30 +01:00
fs btrfs: fix warning when creating a directory with smack enabled 2021-03-09 11:09:37 +01:00
include uapi: nfnetlink_cthelper.h: fix userspace compilation error 2021-03-17 17:03:29 +01:00
init
ipc
kernel sched/features: Fix hrtick reprogramming 2021-03-07 12:20:47 +01:00
lib
LICENSES
mm swap: fix swapfile read/write offset 2021-03-07 12:20:49 +01:00
net net: dsa: add GRO support via gro_cells 2021-03-11 14:06:48 +01:00
samples
scripts ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount 2021-03-09 11:09:39 +01:00
security smackfs: restrict bytes count in smackfs write functions 2021-03-07 12:20:42 +01:00
sound ASoC: Intel: bytcr_rt5640: Add quirk for ARCHOS Cesium 140 2021-03-11 14:06:50 +01:00
tools usbip: tools: fix build error for multiple definition 2021-03-09 11:09:38 +01:00
usr
virt
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.get_maintainer.ignore
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Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.105 2021-03-11 14:06:51 +01:00
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.