[PATCH] nfsroot: Fix missing check for return value of strsep() The strsep() function in root_nfs_parse_options() may return NULL if argument 'incoming' is NULL. Since 'incoming' has Null check in this function, it is also need to add Null check for return value of strsep().

[Chenyuan Mi <cymi20@xxxxxxxxxxxx>]

Found by our static analysis tool.

Signed-off-by: Chenyuan Mi <cymi20@xxxxxxxxxxxx>
---
 fs/nfs/nfsroot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 620329b7e6ae..55c594dede9f 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -198,7 +198,7 @@ static int __init root_nfs_parse_options(char *incoming, char *exppath,
 	 * Set the NFS remote path
 	 */
 	p = strsep(&incoming, ",");
-	if (*p != '\0' && strcmp(p, "default") != 0)
+	if (p != NULL && *p != '\0' && strcmp(p, "default") != 0)
 		if (root_nfs_copy(exppath, p, exppathlen))
 			return -1;
 
-- 
2.17.1