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ubifs: ubifs_add_orphan: Fix a memory leak bug

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[ Upstream commit 927cc5cec35f01fe4f8af0ba80830a90b0533983 ]

Memory leak occurs when files with extended attributes are added to
orphan list.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Fixes: 988bec4131 ("ubifs: orphan: Handle xattrs like files")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhihao Cheng 2020-03-03 17:40:23 +08:00 committed by Greg Kroah-Hartman
parent 17bc3bff02
commit 49bc26b765
1 changed files with 7 additions and 2 deletions
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9
fs/ubifs/orphan.c
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@ -157,7 +157,7 @@ int ubifs_add_orphan(struct ubifs_info *c, ino_t inum)
int err = 0;
ino_t xattr_inum;
union ubifs_key key;
struct ubifs_dent_node *xent;
struct ubifs_dent_node *xent, *pxent = NULL;
struct fscrypt_name nm = {0};
struct ubifs_orphan *xattr_orphan;
struct ubifs_orphan *orphan;
@ -181,11 +181,16 @@ int ubifs_add_orphan(struct ubifs_info *c, ino_t inum)
xattr_inum = le64_to_cpu(xent->inum);
xattr_orphan = orphan_add(c, xattr_inum, orphan);
if (IS_ERR(xattr_orphan))
if (IS_ERR(xattr_orphan)) {
kfree(xent);
return PTR_ERR(xattr_orphan);
}
kfree(pxent);
pxent = xent;
key_read(c, &xent->key, &key);
}
kfree(pxent);
return 0;
}