diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2012-08-05 23:28:16 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-08-05 23:28:16 -0400 |
| commit | 7e731bc9a12339f344cddf82166b82633d99dd86 (patch) | |
| tree | 1a9e6cee1227c1a6cbc4b172b789599a129d94d6 /fs/ext4 | |
| parent | d796c52ef0b71a988364f6109aeb63d79c5b116b (diff) | |
| download | lwn-7e731bc9a12339f344cddf82166b82633d99dd86.tar.gz lwn-7e731bc9a12339f344cddf82166b82633d99dd86.zip | |
ext4: avoid kmemcheck complaint from reading uninitialized memory
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>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4')
| -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 ccc4bcad5616..56bcaec9149c 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -959,6 +959,7 @@ 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; |