[PATCH v3 1/4] NFSD: nfsd_unlink() clobbers non-zero status returned from fh_fill_pre_attrs()

cel
2025-01-26T21:50:25Z

If fh_fill_pre_attrs() returns a non-zero status, the error flow
takes it through out_unlock, which then overwrites the returned
status code with

err = nfserrno(host_err);

Fixes: a332018a91c4 ("nfsd: handle failure to collect pre/post-op attrs more sanely")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
fs/nfsd/vfs.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 29cb7b812d71..2d8e27c225f9 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -2011,11 +2011,9 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
* error status.
*/
err = nfserr_file_open;
- } else {
- err = nfserrno(host_err);
}
out:
- return err;
+ return err != nfs_ok ? err : nfserrno(host_err);
out_unlock:
inode_unlock(dirp);
goto out_drop_write;
--
2.47.0