do not accept empty strings for fsparam_string()
Reported-by: syzbot+c23efa0cc68e79d551fc@syzkaller.appspotmail.com
Fixes: 61dff9215877 ("Pass consistent param->type to fs_parse()")
diff --git a/fs/fs_parser.c b/fs/fs_parser.c
index fdc047b..7e6fb43 100644
--- a/fs/fs_parser.c
+++ b/fs/fs_parser.c
@@ -256,7 +256,7 @@
int fs_param_is_string(struct p_log *log, const struct fs_parameter_spec *p,
struct fs_parameter *param, struct fs_parse_result *result)
{
- if (param->type != fs_value_is_string)
+ if (param->type != fs_value_is_string || !*param->string)
return fs_param_bad_value(log, param);
return 0;
}
