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Message-ID: <lsq.1404846110.292494647@decadent.org.uk> Date: Tue, 08 Jul 2014 20:01:50 +0100 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org, "Theodore Ts'o" <tytso@....edu>, "Maurizio Lombardi" <mlombard@...hat.com> Subject: [PATCH 3.2 021/125] ext4: fix wrong assert in ext4_mb_normalize_request() 3.2.61-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Maurizio Lombardi <mlombard@...hat.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 <mlombard@...hat.com> Signed-off-by: Theodore Ts'o <tytso@....edu> Signed-off-by: Ben Hutchings <ben@...adent.org.uk> --- fs/ext4/mballoc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -3067,7 +3067,7 @@ ext4_mb_normalize_request(struct ext4_al } 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 */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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