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Message-ID: <1451551908-8642-1-git-send-email-zhongjiang@huawei.com> Date: Thu, 31 Dec 2015 16:51:48 +0800 From: zhongjiang <zhongjiang@...wei.com> To: <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>, <qiuxishi@...wei.com> Subject: [PATCH] arm64: fix add kasan bug From: zhong jiang <zhongjiang@...wei.com> 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@...wei.com> --- 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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