diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2012-08-05 23:28:16 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-09-12 03:36:50 +0100 |
| commit | 11306f0a62f8c12b0fa4a35d0b4dc5a91fa79612 (patch) | |
| tree | fcdf9f26ab6379ff7f25f583ab8ddd283e2de076 /fs | |
| parent | 01bc11a7721b979abfbff0539084318c52444db4 (diff) | |
ext4: avoid kmemcheck complaint from reading uninitialized memory
commit 7e731bc9a12339f344cddf82166b82633d99dd86 upstream.
Commit 03179fe923 introduced a kmemcheck complaint in
ext4_da_get_block_prep() because we save and restore
ei->i_da_metadata_calc_last_lblock even though it is left
uninitialized in the case where i_da_metadata_calc_len is zero.
This doesn't hurt anything, but silencing the kmemcheck complaint
makes it easier for people to find real bugs.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=45631
(which is marked as a regression).
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index a071348c9ef..129925ad90d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -904,6 +904,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->i_reserved_meta_blocks = 0; ei->i_allocated_meta_blocks = 0; ei->i_da_metadata_calc_len = 0; + ei->i_da_metadata_calc_last_lblock = 0; spin_lock_init(&(ei->i_block_reservation_lock)); #ifdef CONFIG_QUOTA ei->i_reserved_quota = 0; |