diff --git a/mm/page_poison.c b/mm/page_poison.c index 021c2fa14a21..a32c78e10744 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -64,7 +64,8 @@ static bool single_bit_flip(unsigned char a, unsigned char b) return error && !(error & (error - 1)); } -static void check_poison_mem(unsigned char *mem, size_t bytes) +static void check_poison_mem(struct page *page, + unsigned char *mem, size_t bytes) { static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 10); unsigned char *start; @@ -85,9 +86,11 @@ static void check_poison_mem(unsigned char *mem, size_t bytes) if (!__ratelimit(&ratelimit)) return; else if (start == end && single_bit_flip(*start, PAGE_POISON)) - pr_err("pagealloc: single bit error\n"); + pr_err("pagealloc: single bit error on page with phys start 0x%lx\n", + (unsigned long)page_to_phys(page)); else - pr_err("pagealloc: memory corruption\n"); + pr_err("pagealloc: memory corruption on page with phys start 0x%lx\n", + (unsigned long)page_to_phys(page)); print_hex_dump(KERN_ERR, "", DUMP_PREFIX_ADDRESS, 16, 1, start, end - start + 1, 1); @@ -104,7 +107,7 @@ static void unpoison_page(struct page *page) * that is freed to buddy. Thus no extra check is done to * see if a page was poisoned. */ - check_poison_mem(addr, PAGE_SIZE); + check_poison_mem(page, addr, PAGE_SIZE); kunmap_atomic(addr); }