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| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2015-04-02 16:32:15 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-04-02 16:32:15 -0400 |
| commit | 7071b715873a66b69a9c0c5839963bb51aeae41b (patch) | |
| tree | 098e6c33b06dd3ede2d81f1edd4ea1ab1ad3cf05 /fs/ext4/namei.c | |
| parent | 1efff914afac8a965ad63817ecf8861a927c2ace (diff) | |
| download | linux-7071b715873a66b69a9c0c5839963bb51aeae41b.tar.gz linux-7071b715873a66b69a9c0c5839963bb51aeae41b.tar.bz2 linux-7071b715873a66b69a9c0c5839963bb51aeae41b.zip | |
ext4: fix bh leak on error paths in ext4_rename() and ext4_cross_rename()
Release references to buffer-heads if ext4_journal_start() fails.
Fixes: 5b61de757535 ("ext4: start handle at least possible moment when renaming files")
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/namei.c')
| -rw-r--r-- | fs/ext4/namei.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 28fe71a2904c..8110dd20ad3f 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3264,12 +3264,18 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2); if (!(flags & RENAME_WHITEOUT)) { handle = ext4_journal_start(old.dir, EXT4_HT_DIR, credits); - if (IS_ERR(handle)) - return PTR_ERR(handle); + if (IS_ERR(handle)) { + retval = PTR_ERR(handle); + handle = NULL; + goto end_rename; + } } else { whiteout = ext4_whiteout_for_rename(&old, credits, &handle); - if (IS_ERR(whiteout)) - return PTR_ERR(whiteout); + if (IS_ERR(whiteout)) { + retval = PTR_ERR(whiteout); + whiteout = NULL; + goto end_rename; + } } if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir)) @@ -3433,8 +3439,11 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, handle = ext4_journal_start(old.dir, EXT4_HT_DIR, (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) + 2 * EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); - if (IS_ERR(handle)) - return PTR_ERR(handle); + if (IS_ERR(handle)) { + retval = PTR_ERR(handle); + handle = NULL; + goto end_rename; + } if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir)) ext4_handle_sync(handle); |