Re: [PATCH v2] smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer
Namjae Jeon <[email protected]>
| Newsgroups | org.kernel.vger.linux-cifs |
|---|---|
| Message-ID | <CAKYAXd9-GV+1ELu9YQt0RXVSvXwL+JjNwwyf0z7dN+cUqxNHsA@mail.gmail.com> |
On Wed, Jul 8, 2026 at 9:59 PM Enzo Matsumiya <[email protected]> wrote: > > Free it unconditionally after ksmbd_alloc_user() calls. > > kmemleak splat: > unreferenced object 0xffff888103b83540 (size 192): > comm "pool-0", pid 16970, jiffies 4377290937 > hex dump (first 32 bytes): > 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace (crc 408ccc66): > __kvmalloc_node_noprof+0x730/0x920 > handle_generic_event+0xec/0x1a0 [ksmbd] > genl_family_rcv_msg_doit+0xe0/0x130 > genl_rcv_msg+0x181/0x290 > netlink_rcv_skb+0x4f/0x100 > genl_rcv+0x28/0x40 > netlink_unicast+0x1e6/0x2c0 > netlink_sendmsg+0x20a/0x450 > ____sys_sendmsg+0x2e8/0x310 > ___sys_sendmsg+0x78/0xc0 > __sys_sendmsg+0x63/0xc0 > do_syscall_64+0xa1/0x670 > entry_SYSCALL_64_after_hwframe+0x76/0x7e > > Fixes: a77e0e02af1c ("ksmbd: add support for supplementary groups") > Signed-off-by: Enzo Matsumiya <[email protected]> Applied it to #ksmbd-for-next-next. Thanks!