From: Maurizio Lombardi <mlomb...@redhat.com>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit b5b60778558cafad17bbcbf63e0310bd3c68eb17 upstream.
The variable "size" is expressed as number of blocks and not as
number of clusters, this could trigger a kernel panic when using
ext4 with the size of a cluster different from the size of a block.
Signed-off-by: Maurizio Lombardi <mlomb...@redhat.com>
Signed-off-by: Theodore Ts'o <ty...@mit.edu>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
fs/ext4/mballoc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 04a5c7504be9..08ddfdac955c 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3135,7 +3135,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context
*ac,
}
BUG_ON(start + size <= ac->ac_o_ex.fe_logical &&
start > ac->ac_o_ex.fe_logical);
- BUG_ON(size <= 0 || size > EXT4_CLUSTERS_PER_GROUP(ac->ac_sb));
+ BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
/* now prepare goal request */
--
2.0.0
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
