diff options
| author | Yao Zi <ziyao@disroot.org> | 2025-09-19 12:58:29 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-09-20 09:55:56 +0200 |
| commit | 3ec09344b01a15901ba824e877a0562ed8103e27 (patch) | |
| tree | 9a8294cc5f654de1a90fbea962de999ef67a23ed | |
| parent | 41e871f2b63edaf8da20907d512cd5d91ba51476 (diff) | |
LoongArch: Fix bitflag conflict for TIF_FIXADE
After LoongArch was converted to use the generic TIF bits in commit
f9629891d407 ("loongarch: Use generic TIF bits"), its TIF_FIXADE flag
takes the same bit with TIF_RESTORE_SIGMASK in thread_info.flags.
Such conflict causes TIF_FIXADE being considered cleared when
TIF_RESTORE_SIGMASK is cleared during deliver of a signal. And since
TIF_FIXADE determines whether unaligned access emulation works for a
task, userspace making use of unaligned access will receive unexpected
SIGBUS (and likely terminate) after receiving its first signal.
This conflict looks like a simple typo, switch it to the free bit 19.
Fixes: f9629891d407 ("loongarch: Use generic TIF bits")
Signed-off-by: Yao Zi <ziyao@disroot.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Wentao Guan <guanwentao@uniontech.com>
| -rw-r--r-- | arch/loongarch/include/asm/thread_info.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/loongarch/include/asm/thread_info.h b/arch/loongarch/include/asm/thread_info.h index def7cb14467e..4d7117fcdc78 100644 --- a/arch/loongarch/include/asm/thread_info.h +++ b/arch/loongarch/include/asm/thread_info.h @@ -77,7 +77,7 @@ register unsigned long current_stack_pointer __asm__("$sp"); #define TIF_NOHZ 16 /* in adaptive nohz mode */ #define TIF_USEDFPU 17 /* FPU was used by this task this quantum (SMP) */ #define TIF_USEDSIMD 18 /* SIMD has been used this quantum */ -#define TIF_FIXADE 10 /* Fix address errors in software */ +#define TIF_FIXADE 19 /* Fix address errors in software */ #define TIF_LOGADE 20 /* Log address errors to syslog */ #define TIF_32BIT_REGS 21 /* 32-bit general purpose registers */ #define TIF_32BIT_ADDR 22 /* 32-bit address space */ |