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Ammar Faizi a8816afcaf x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
[ Upstream commit 5541992e512de8c9133110809f767bd1b54ee10d ]

The 'syscall' instruction clobbers '%rcx' and '%r11', but they are not
listed in the inline Assembly that performs the syscall instruction.

No real bug is found. It wasn't buggy by luck because '%rcx' and '%r11'
are caller-saved registers, and not used in the functions, and the
functions are never inlined.

Add them to the clobber list for code correctness.

Fixes: f1c2bb8b99 ("um: implement a x86_64 vDSO")
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-11 16:44:10 +01:00
arch x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list 2023-03-11 16:44:10 +01:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:43:54 +01:00
certs
crypto crypto: rsa-pkcs1pad - Use akcipher_request_complete 2023-03-11 16:43:41 +01:00
Documentation mm: memcontrol: deprecate charge moving 2023-03-11 16:44:05 +01:00
drivers ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed 2023-03-11 16:44:10 +01:00
fs ubifs: ubifs_writepage: Mark page dirty after writing inode failed 2023-03-11 16:44:10 +01:00
include ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:44:02 +01:00
init
ipc
kernel irqdomain: Drop bogus fwspec-mapping error handling 2023-03-11 16:44:03 +01:00
lib
LICENSES
mm mm/thp: check and bail out if page in deferred queue already 2023-03-11 16:44:05 +01:00
net net/sched: Retire tcindex classifier 2023-03-11 16:44:07 +01:00
samples
scripts
security ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:44:02 +01:00
sound ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC 2023-03-11 16:44:03 +01:00
tools ktest.pl: Add RUN_TIMEOUT option with default unlimited 2023-03-11 16:44:05 +01:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile kbuild: Port silent mode detection to future gnu make. 2023-03-11 16:44:07 +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.