[PATCH 4.9 134/207] fs: orangefs: fix error return code of orangefs_revalidate_lookup()

Greg Kroah-Hartman
2021-11-24T12:23:38Z

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit 4c2b46c824a78fc8190d8eafaaea5a9078fe7479 ]

When op_alloc() returns NULL to new_op, no error return code of
orangefs_revalidate_lookup() is assigned.
To fix this bug, ret is assigned with -ENOMEM in this case.

Fixes: 8bb8aefd5afb ("OrangeFS: Change almost all instances of the string PVFS2 to OrangeFS.")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/orangefs/dcache.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/orangefs/dcache.c b/fs/orangefs/dcache.c
index 5355efba4bc8c..1942f9946ab77 100644
--- a/fs/orangefs/dcache.c
+++ b/fs/orangefs/dcache.c
@@ -25,8 +25,10 @@ static int orangefs_revalidate_lookup(struct dentry *dentry)
gossip_debug(GOSSIP_DCACHE_DEBUG, "%s: attempting lookup.\n", __func__);

new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
- if (!new_op)
+ if (!new_op) {
+ ret = -ENOMEM;
goto out_put_parent;
+ }

new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
new_op->upcall.req.lookup.parent_refn = parent->refn;
--
2.33.0