appletalk: Fix Use-After-Free in atalk_ioctl

stable inclusion
from stable-v4.19.302
commit 580ff9f59ab6537d8ce1d0d9f012cf970553ef3d
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8RXOY
CVE: CVE-2023-51781

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=580ff9f59ab6537d8ce1d0d9f012cf970553ef3d



--------------------------------

[ Upstream commit 189ff16722ee36ced4d2a2469d4ab65a8fee4198 ]

Because atalk_ioctl() accesses sk->sk_receive_queue
without holding a sk->sk_receive_queue.lock, it can
cause a race with atalk_recvmsg().
A use-after-free for skb occurs with the following flow.
```
atalk_ioctl() -> skb_peek()
atalk_recvmsg() -> skb_recv_datagram() -> skb_free_datagram()
```
Add sk->sk_receive_queue.lock to atalk_ioctl() to fix this issue.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/r/20231213041056.GA519680@v4bel-B760M-AORUS-ELITE-AX


Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Dong Chenchen <dongchenchen2@huawei.com>