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Filename Latest commit message Latest commit date
Zhihao Cheng 7adc05b73d ubifs: Fix races between xattr_{set|get} and listxattr operations
commit f4e3634a3b642225a530c292fdb1e8a4007507f5 upstream.

UBIFS may occur some problems with concurrent xattr_{set|get} and
listxattr operations, such as assertion failure, memory corruption,
stale xattr value[1].

Fix it by importing a new rw-lock in @ubifs_inode to serilize write
operations on xattr, concurrent read operations are still effective,
just like ext4.

[1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com

Fixes: 1e51764a3c ("UBIFS: add new flash file system")
Cc: stable@vger.kernel.org  # v2.6+
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-19 08:53:16 +02:00
arch MIPS: fix "mipsel-linux-ld: decompress.c:undefined reference to `memmove'" 2021-07-19 08:53:16 +02:00
block blk-wbt: make sure throttle is enabled properly 2021-07-14 16:53:25 +02:00
certs
crypto
Documentation clocksource: Retry clock read if long delays detected 2021-07-14 16:53:18 +02:00
drivers thermal/drivers/int340x/processor_thermal: Fix tcc setting 2021-07-19 08:53:16 +02:00
fs ubifs: Fix races between xattr_{set|get} and listxattr operations 2021-07-19 08:53:16 +02:00
include sctp: validate from_addr_param return 2021-07-19 08:53:13 +02:00
init
ipc
kernel cpu/hotplug: Cure the cpusets trainwreck 2021-07-19 08:53:15 +02:00
lib
LICENSES
mm mm/z3fold: fix potential memory leak in z3fold_destroy_pool() 2021-07-14 16:53:47 +02:00
net sctp: add size validation when walking chunks 2021-07-19 08:53:13 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-14 16:53:30 +02:00
scripts kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' 2021-07-14 16:53:20 +02:00
security selinux: use __GFP_NOWARN with GFP_NOWAIT in the AVC 2021-07-19 08:53:10 +02:00
sound ASoC: tegra: Set driver_name=tegra for all machine drivers 2021-07-19 08:53:16 +02:00
tools perf bench: Fix 2 memory sanitizer warnings 2021-07-19 08:53:14 +02:00
usr
virt
.clang-format
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.gitattributes
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COPYING
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Kbuild
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MAINTAINERS
Makefile Linux 5.4.132 2021-07-14 16:53:49 +02:00
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.