From 556f063580db2953a7e53cd46b47724246320f60 Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Tue, 29 Nov 2011 12:49:18 +0200 Subject: [PATCH] mtdoops: fix the oops_page_used array size The array of unsigned long pointed by oops_page_used is allocated by vmalloc which requires the size to be in bytes. BITS_PER_LONG is equal to 32. If we want to allocate memory for 32 pages with one bit per page then 32 / BITS_PER_LONG is equal to 1 byte that is 8 bits. To fix it we need to multiply the result by sizeof(unsigned long) equal to 4. Cc: stable@kernel.org Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtdoops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index cea9279ceabf..f3cdce9a85a6 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -372,7 +372,7 @@ static void mtdoops_notify_add(struct mtd_info *mtd) /* oops_page_used is a bit field */ cxt->oops_page_used = vmalloc(DIV_ROUND_UP(mtdoops_pages, - BITS_PER_LONG)); + BITS_PER_LONG) * sizeof(unsigned long)); if (!cxt->oops_page_used) { printk(KERN_ERR "mtdoops: could not allocate page array\n"); return; -- 2.20.1