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ext4: Fix endianness bug when reading the MMP block
[firefly-linux-kernel-4.4.55.git]
/
fs
/
ext4
/
mmp.c
diff --git
a/fs/ext4/mmp.c
b/fs/ext4/mmp.c
index 7ea4ba4eff2ac4b9dbcae63a54ee68bb5e1a7190..ed6548d89165e1d9c31118aca21d3e89a3772ab2 100644
(file)
--- a/
fs/ext4/mmp.c
+++ b/
fs/ext4/mmp.c
@@
-257,8
+257,8
@@
int ext4_multi_mount_protect(struct super_block *sb,
* If check_interval in MMP block is larger, use that instead of
* update_interval from the superblock.
*/
* If check_interval in MMP block is larger, use that instead of
* update_interval from the superblock.
*/
- if (
mmp->mmp_check_interval
> mmp_check_interval)
- mmp_check_interval =
mmp->mmp_check_interval
;
+ if (
le16_to_cpu(mmp->mmp_check_interval)
> mmp_check_interval)
+ mmp_check_interval =
le16_to_cpu(mmp->mmp_check_interval)
;
seq = le32_to_cpu(mmp->mmp_seq);
if (seq == EXT4_MMP_SEQ_CLEAN)
seq = le32_to_cpu(mmp->mmp_seq);
if (seq == EXT4_MMP_SEQ_CLEAN)