When p9pdu_readf() is called with "s?d" attribute, it allocates a pointer
that will store a string. But when p9pdu_readf() fails while handling "d"
then this pointer will not be freed in p9_check_errors().
Fixes:
51a87c552dfd ("9p: rework client code to use new protocol support functions")
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Message-ID: <
20231027030302.11927-1-hbh25y@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
return 0;
if (!p9_is_proto_dotl(c)) {
- char *ename;
+ char *ename = NULL;
err = p9pdu_readf(&req->rc, c->proto_version, "s?d",
&ename, &ecode);
- if (err)
+ if (err) {
+ kfree(ename);
goto out_err;
+ }
if (p9_is_proto_dotu(c) && ecode < 512)
err = -ecode;