3.8.13.27 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Maurizio Lombardi <mlomb...@redhat.com>
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: Kamal Mostafa <ka...@canonical.com>
---
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 2167e90..a72f1c0 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3030,7 +3030,7 @@ 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 */
--
1.9.1
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