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| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-12-06 10:39:40 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-08 10:17:06 +0100 |
| commit | 73a0059dcf26eeb07bebbcd1d95bde84fdaae7cd (patch) | |
| tree | 183b0459a87b69a6bd318831db87261bb57ad4ea /arch | |
| parent | 1f8330dcdc6084b10768f159cbb93269b392cc71 (diff) | |
| download | linux-73a0059dcf26eeb07bebbcd1d95bde84fdaae7cd.tar.gz linux-73a0059dcf26eeb07bebbcd1d95bde84fdaae7cd.tar.bz2 linux-73a0059dcf26eeb07bebbcd1d95bde84fdaae7cd.zip | |
LoongArch: Fix build errors for CONFIG_RANDSTRUCT
commit 3c250aecef62da81deb38ac6738ac0a88d91f1fc 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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/loongarch/kernel/switch.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/loongarch/kernel/switch.S b/arch/loongarch/kernel/switch.S index 9c23cb7e432f..3007e909e0d8 100644 --- a/arch/loongarch/kernel/switch.S +++ b/arch/loongarch/kernel/switch.S @@ -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 |