------------[ cut here ]------------
WARNING: CPU: 1 PID: 3668 at net/ipv4/af_inet.c:153 inet_sock_destruct+0x6af/0x880 net/ipv4/af_inet.c:153 net/ipv4/af_inet.c:153
Modules linked in:
CPU: 1 PID: 3668 Comm: kworker/1:3 Not tainted 5.16.0-rc5-next-20211216-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events mptcp_worker
RIP: 0010:inet_sock_destruct+0x6af/0x880 net/ipv4/af_inet.c:153 net/ipv4/af_inet.c:153
Code: 41 8b 9c 24 30 02 00 00 e9 f2 fe ff ff e8 29 4f ab f9 0f 0b e9 df fd ff ff e8 1d 4f ab f9 0f 0b e9 30 fe ff ff e8 11 4f ab f9 <0f> 0b e9 6b fe ff ff e8 05 4f ab f9 0f 0b e9 d8 fe ff ff e8 99 5c
RSP: 0018:ffffc9000206fa70 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 000000000009e108 RCX: 0000000000000000
RDX: ffff88801a9b1d40 RSI: ffffffff87ccb22f RDI: 0000000000000003
RBP: ffff88801d104ca8 R08: 0000000000000000 R09: ffff88801d104eff
R10: ffffffff87ccb099 R11: 0000000000000000 R12: ffff88801d104c80
R13: ffff88801d104efc R14: 0000000000000003 R15: ffffc9000206fbd0
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea6b9afe70 CR3: 0000000078648000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __sk_destruct+0x4d/0x710 net/core/sock.c:2013 net/core/sock.c:2013
 sk_destruct+0xbd/0xe0 net/core/sock.c:2058 net/core/sock.c:2058
 __sk_free+0xef/0x3d0 net/core/sock.c:2069 net/core/sock.c:2069
 sk_free+0x78/0xa0 net/core/sock.c:2080 net/core/sock.c:2080
 sock_put include/net/sock.h:1911 [inline]
 sock_put include/net/sock.h:1911 [inline] net/mptcp/protocol.c:2276
 __mptcp_close_ssk+0x435/0x590 net/mptcp/protocol.c:2276 net/mptcp/protocol.c:2276
 __mptcp_destroy_sock+0x35f/0x830 net/mptcp/protocol.c:2702 net/mptcp/protocol.c:2702
 mptcp_worker+0x7aa/0xc20 net/mptcp/protocol.c:2468 net/mptcp/protocol.c:2468
 process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307 kernel/workqueue.c:2307
 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454 kernel/workqueue.c:2454
 kthread+0x405/0x4f0 kernel/kthread.c:345 kernel/kthread.c:345
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 arch/x86/entry/entry_64.S:295
 </TASK>