iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch/x86/um
History
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: f1c2bb8b9964ed31de988910f8b1cfb586d30091 ("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
..
asm
um: Use real DMA barriers
2019-09-15 21:37:14 +02:00
os-Linux
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
shared/sysdep
um: Cleanup syscall_handler_t cast in syscalls_32.h
2022-10-15 07:54:37 +02:00
vdso
x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
2023-03-11 16:44:10 +01:00
bugs_32.c
…
bugs_64.c
…
checksum_32.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
delay.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
elfcore.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fault.c
…
Kconfig
locking/rwsem: Remove rwsem-spinlock.c & use rwsem-xadd.c for all archs
2019-04-03 14:50:52 +02:00
ldt.c
um: Fix out-of-bounds read in LDT setup
2022-06-14 18:11:48 +02:00
Makefile
locking/rwsem: Remove arch specific rwsem files
2019-04-03 14:50:50 +02:00
mem_32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
mem_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ptrace_32.c
…
ptrace_64.c
um: Fix PTRACE_POKEUSER on x86_64
2017-05-03 22:35:31 +02:00
ptrace_user.c
…
setjmp_32.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
setjmp_64.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
signal.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
stub_32.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stub_64.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stub_segv.c
um: Compile with modern headers
2018-03-29 22:15:12 +02:00
sys_call_table_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sys_call_table_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscalls_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscalls_64.c
um: registers: Rename function names to avoid conflicts and build problems
2022-01-27 09:19:45 +01:00
sysrq_32.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>
2017-03-02 08:42:34 +01:00
sysrq_64.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>
2017-03-02 08:42:34 +01:00
tls_32.c
um: Cleanup compiler warning in arch/x86/um/tls_32.c
2022-10-15 07:54:37 +02:00
tls_64.c
um: Implement copy_thread_tls
2020-01-14 20:08:35 +01:00
user-offsets.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00