This is a note to let you know that I've just added the patch titled NFSD: Fix error return code in nfsd4_interssc_connect() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nfsd-fix-error-return-code-in-nfsd4_interssc_connect.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 429b22747a6b43ad3aede6172f1bb2060c8623db Author: Wei Yongjun <weiyongjun1@xxxxxxxxxx> Date: Fri Jun 4 10:12:37 2021 +0000 NFSD: Fix error return code in nfsd4_interssc_connect() [ Upstream commit 54185267e1fe476875e649bb18e1c4254c123305 ] 'status' has been overwritten to 0 after nfsd4_ssc_setup_dul(), this cause 0 will be return in vfs_kern_mount() error case. Fix to return nfserr_nodev in this error. Fixes: f4e44b393389 ("NFSD: delay unmount source's export after inter-server copy completed.") Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx> Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 598b54893f837..f7ddfa204abc4 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1326,6 +1326,7 @@ nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp, ss_mnt = vfs_kern_mount(type, SB_KERNMOUNT, dev_name, raw_data); module_put(type->owner); if (IS_ERR(ss_mnt)) { + status = nfserr_nodev; if (work) nfsd4_ssc_cancel_dul_work(nn, work); goto out_free_devname;