user_namespace: remove unnecessary NULL values from kbuf

kbuf is assigned first, so it does not need to initialize the assignment.

Link: https://lkml.kernel.org/r/20240115062519.31298-1-zeming@nfschina.com
Signed-off-by: Li zeming <zeming@nfschina.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index ce4d99df5f0eb4621ef32455eadfc57be314edee..0b0b95418b16a7aa69078c6db3f59f7a15f388c2 100644 (file)
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -931,7 +931,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
        struct uid_gid_map new_map;
        unsigned idx;
        struct uid_gid_extent extent;
-       char *kbuf = NULL, *pos, *next_line;
+       char *kbuf, *pos, *next_line;
        ssize_t ret;
 
        /* Only allow < page size writes at the beginning of the file */