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| author | Theodore Ts'o <tytso@mit.edu> | 2012-08-05 23:28:16 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-26 15:00:42 -0700 |
| commit | 9a321bec4fb122cb2bd60febfd9dc71eed7ee5b2 (patch) | |
| tree | ec4d71c9cc2378df39c148fe9a6c054496f9618d /fs | |
| parent | 8b9f3861678e35b18cef66728d0fa896bbda65b6 (diff) | |
| download | linux-3.10-9a321bec4fb122cb2bd60febfd9dc71eed7ee5b2.tar.gz linux-3.10-9a321bec4fb122cb2bd60febfd9dc71eed7ee5b2.tar.bz2 linux-3.10-9a321bec4fb122cb2bd60febfd9dc71eed7ee5b2.zip | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 78fb7ff3adb..0eeac284126 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -932,6 +932,7 @@ 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; |