befs: check return of sb_min_blocksize
Confirm sb_min_blocksize() succeeded before continuing.
Link: http://lkml.kernel.org/r/1465700235-22881-1-git-send-email-luisbg@osg.samsung.com
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index c734f21..453bb68 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -756,6 +756,7 @@
long ret = -EINVAL;
const unsigned long sb_block = 0;
const off_t x86_sb_off = 512;
+ int blocksize;
save_mount_options(sb, data);
@@ -788,7 +789,11 @@
* least 1k to get the second 512 bytes of the volume.
* -WD 10-26-01
*/
- sb_min_blocksize(sb, 1024);
+ blocksize = sb_min_blocksize(sb, 1024);
+ if (!blocksize) {
+ befs_error(sb, "unable to set blocksize");
+ goto unacquire_priv_sbp;
+ }
if (!(bh = sb_bread(sb, sb_block))) {
if (!silent)
