averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-09-22 09:34:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

LoongArch: Fix build errors for CONFIG_RANDSTRUCT

Browse Source 
commit 3c250aecef upstream.

When CONFIG_RANDSTRUCT enabled, members of task_struct are randomized.
There is a chance that TASK_STACK_CANARY be out of 12bit immediate's
range and causes build errors. TASK_STACK_CANARY is naturally aligned,
so fix it by replacing ld.d/st.d with ldptr.d/stptr.d which have 14bit
immediates.

Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511240656.0NaPcJs1-lkp@intel.com/
Suggested-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Huacai Chen
2026-01-11 15:22:16 +01:00
committed by Greg Kroah-Hartman
parent 155d6a8f5d
commit 582c1dcc5b
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/loongarch/kernel/switch.S
+2 -2
View File
@@ -25,8 +25,8 @@ SYM_FUNC_START(__switch_to)
stptr.d a4, a0, THREAD_SCHED_CFA
#if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_SMP)
la t7, __stack_chk_guard
LONG_L t8, a1, TASK_STACK_CANARY
LONG_S t8, t7, 0
ldptr.d t8, a1, TASK_STACK_CANARY
stptr.d t8, t7, 0
#endif
move tp, a2
cpu_restore_nonscratch a1