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| author | Roman Tereshonkov <roman.tereshonkov@nokia.com> | 2011-11-29 12:49:18 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 18:18:11 +0000 |
| commit | 556f063580db2953a7e53cd46b47724246320f60 (patch) | |
| tree | f79998a3fd20823c31d8917b758a67bc60af1b17 | |
| parent | 53466710202900ce49e471f480cac11275e1d0c4 (diff) | |
| download | op-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.c | 2 |
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; |
