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| author | Vasily Averin <vvs@virtuozzo.com> | 2018-11-07 11:14:35 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-11-07 11:14:35 -0500 |
| commit | 53692ec074d00589c2cf1d6d17ca76ad0adce6ec (patch) | |
| tree | d3283f5c1745b4af16efc21c84bd8594c4360c8e | |
| parent | 6bdc9977fcdedf47118d2caf7270a19f4b6d8a8f (diff) | |
| download | linux-53692ec074d00589c2cf1d6d17ca76ad0adce6ec.tar.bz2 | |
ext4: fix buffer leak in ext4_expand_extra_isize_ea() on error path
Fixes: de05ca852679 ("ext4: move call to ext4_error() into ...")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org # 4.17
| -rw-r--r-- | fs/ext4/xattr.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 5c9bc0d85cc0..0b9688683526 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -2698,7 +2698,6 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, struct ext4_inode *raw_inode, handle_t *handle) { struct ext4_xattr_ibody_header *header; - struct buffer_head *bh; struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); static unsigned int mnt_count; size_t min_offs; @@ -2739,13 +2738,17 @@ retry: * EA block can hold new_extra_isize bytes. */ if (EXT4_I(inode)->i_file_acl) { + struct buffer_head *bh; + bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl); error = -EIO; if (!bh) goto cleanup; error = ext4_xattr_check_block(inode, bh); - if (error) + if (error) { + brelse(bh); goto cleanup; + } base = BHDR(bh); end = bh->b_data + bh->b_size; min_offs = end - base; |