From: Olga Kornievskaia <olga.kornievskaia@gmail.com>
Date: Wed, 4 Dec 2019 15:13:54 -0500
Subject: [PATCH] NFSD fixing possible null pointer derefering in copy offload
Git-commit: 18f428d4e2f7eff162d80b2b21689496c4e82afd
Patch-mainline: v5.5-rc1
References: git-fixes
Static checker revealed possible error path leading to possible
NULL pointer dereferencing.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: e0639dc5805a: ("NFSD introduce async copy feature")
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: NeilBrown <neilb@suse.com>
---
fs/nfsd/nfs4proc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1303,7 +1303,8 @@ nfsd4_copy(struct svc_rqst *rqstp, struc
out:
return status;
out_err:
- cleanup_async_copy(async_copy);
+ if (async_copy)
+ cleanup_async_copy(async_copy);
goto out;
}