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WARNING: lock held when returning to user space!
5.11.0-rc7-syzkaller #0 Not tainted
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syz-executor876/6019 is leaving the kernel with locks still held!
1 lock held by syz-executor876/6019:
 #0: ffff88801f9156e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1598 [inline]
 #0: ffff88801f9156e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt net/ipv4/tcp.c:3365 [inline]
 #0: ffff88801f9156e0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_setsockopt+0x34e/0x1ed0 net/ipv4/tcp.c:3646