From: zhong jiang <zhongjiang@xxxxxxxxxx> In general, each process have 16kb stack space to use, but stack need extra space to store red_zone when kasan enable. the patch fix above question. Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx> --- arch/arm64/include/asm/thread_info.h | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 90c7ff2..45b5a7e 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -23,13 +23,24 @@ #include <linux/compiler.h> +#ifdef CONFIG_KASAN +#define KASAN_STACK_ORDER 1 +#else +#define KASAN_STACK_ORDER 0 +#endif + #ifdef CONFIG_ARM64_4K_PAGES -#define THREAD_SIZE_ORDER 2 +#define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) #elif defined(CONFIG_ARM64_16K_PAGES) -#define THREAD_SIZE_ORDER 0 +#define THREAD_SIZE_ORDER (0 + KASAN_STACK_ORDER) #endif +#ifdef CONFIG_KASAN +#define THREAD_SIZE 32768 +#else #define THREAD_SIZE 16384 +#endif + #define THREAD_START_SP (THREAD_SIZE - 16) #ifndef __ASSEMBLY__ -- 2.0.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>