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authorDan Carpenter <dan.carpenter@oracle.com>2019-02-21 11:17:34 -0500
committerTheodore Ts'o <tytso@mit.edu>2019-02-21 11:17:34 -0500
commit7159a986b4202343f6cca3bb8079ecace5816fd6 (patch)
tree826bd55a9430873c0d6acec4b513f9e62f9cd5dd /fs/ext4
parent793bc5181b14bf7cdfefe9d2fe8fc4a8114b78f9 (diff)
ext4: fix some error pointer dereferences
We can't pass error pointers to brelse(). Fixes: fb265c9cb49e ("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>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/xattr.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 86ed9c686249..dc82e7757f67 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -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) {