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authorRoman Tereshonkov <roman.tereshonkov@nokia.com>2011-11-29 12:49:18 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-01-09 18:18:11 +0000
commit556f063580db2953a7e53cd46b47724246320f60 (patch)
treef79998a3fd20823c31d8917b758a67bc60af1b17
parent53466710202900ce49e471f480cac11275e1d0c4 (diff)
downloadop-kernel-dev-556f063580db2953a7e53cd46b47724246320f60.zip
op-kernel-dev-556f063580db2953a7e53cd46b47724246320f60.tar.gz
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 <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--drivers/mtd/mtdoops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index cea9279..f3cdce9 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;
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