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ext4: fix some error pointer dereferences

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We can't pass error pointers to brelse().

Fixes: fb265c9cb4 ("ext4: add ext4_sb_bread() to disambiguate ENOMEM cases")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Dan Carpenter 2019-02-21 11:17:34 -05:00 committed by Theodore Ts'o
parent 793bc5181b
commit 7159a986b4
1 changed files with 3 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
fs/ext4/xattr.c
View file

@ -829,6 +829,7 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
if (IS_ERR(bh)) {
ret = PTR_ERR(bh);
bh = NULL;
goto out;
}
@ -2903,6 +2904,7 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
if (error == -EIO)
EXT4_ERROR_INODE(inode, "block %llu read error",
EXT4_I(inode)->i_file_acl);
bh = NULL;
goto cleanup;
}
error = ext4_xattr_check_block(inode, bh);
@ -3059,6 +3061,7 @@ ext4_xattr_block_cache_find(struct inode *inode,
if (IS_ERR(bh)) {
if (PTR_ERR(bh) == -ENOMEM)
return NULL;
bh = NULL;
EXT4_ERROR_INODE(inode, "block %lu read error",
(unsigned long)ce->e_value);
} else if (ext4_xattr_cmp(header, BHDR(bh)) == 0) {