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Filename Latest commit message Latest commit date
Oliver Hartkopp c358e7e99d can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check
commit d73ff9b7c4eacaba0fd956d14882bcae970f8307 upstream.

To detect potential bugs in CAN protocol implementations (double removal of
receiver entries) a WARN() statement has been used if no matching list item was
found for removal.

The fault injection issued by syzkaller was able to create a situation where
the closing of a socket runs simultaneously to the notifier call chain for
removing the CAN network device in use.

This case is very unlikely in real life but it doesn't break anything.
Therefore we just replace the WARN() statement with pr_warn() to preserve the
notification for the CAN protocol development.

Reported-by: syzbot+381d06e0c8eaacb8706f@syzkaller.appspotmail.com
Reported-by: syzbot+d0ddd88c9a7432f041e6@syzkaller.appspotmail.com
Reported-by: syzbot+76d62d3b8162883c7d11@syzkaller.appspotmail.com
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20201126192140.14350-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-11 13:23:32 +01:00
arch x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-11 13:23:30 +01:00
block
certs
crypto
Documentation dt-bindings: net: correct interrupt flags in examples 2020-12-08 10:40:25 +01:00
drivers iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs 2020-12-11 13:23:31 +01:00
fs coredump: fix core_pattern parse error 2020-12-11 13:23:30 +01:00
include genirq/irqdomain: Add an irq_create_mapping_affinity() function 2020-12-11 13:23:30 +01:00
init
ipc
kernel tracing: Fix userstacktrace option for instances 2020-12-11 13:23:32 +01:00
lib lib/syscall: fix syscall registers retrieval on 32-bit platforms 2020-12-11 13:23:32 +01:00
LICENSES
mm mm/swapfile: do not sleep with a spin lock held 2020-12-11 13:23:31 +01:00
net can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check 2020-12-11 13:23:32 +01:00
samples
scripts
security ima: extend boot_aggregate with kernel measurements 2020-12-08 10:40:24 +01:00
sound ALSA: hda/generic: Add option to enforce preferred_dacs pairs 2020-12-11 13:23:29 +01:00
tools x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-11 13:23:30 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.82 2020-12-08 10:40:28 +01:00
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.