------------[ cut here ]------------
WARNING: CPU: 1 PID: 3645 at net/ipv4/af_inet.c:153 inet_sock_destruct+0x6b9/0x880 net/ipv4/af_inet.c:153
Modules linked in:
CPU: 1 PID: 3645 Comm: kworker/1:3 Not tainted 5.18.0-rc3-syzkaller-00248-gba5a4fdd63ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events mptcp_worker
RIP: 0010:inet_sock_destruct+0x6b9/0x880 net/ipv4/af_inet.c:153
Code: 41 8b 9c 24 30 02 00 00 e9 f2 fe ff ff e8 0f 89 9b f9 0f 0b e9 df fd ff ff e8 03 89 9b f9 0f 0b e9 30 fe ff ff e8 f7 88 9b f9 <0f> 0b e9 6b fe ff ff e8 eb 88 9b f9 0f 0b e9 d8 fe ff ff e8 0f 18
RSP: 0018:ffffc900031ffa68 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000027dd0 RCX: 0000000000000000
RDX: ffff888024438000 RSI: ffffffff87dda6b9 RDI: 0000000000000003
RBP: ffff8880776c0ce8 R08: 0000000000000000 R09: ffff8880776c0f3f
R10: ffffffff87dda523 R11: 0000000000000000 R12: ffff8880776c0cc0
R13: ffff8880776c0f3c R14: 0000000000000003 R15: ffff888019ac8658
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e3a8a500f CR3: 000000001a4ab000 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:2028
 sk_destruct+0x131/0x180 net/core/sock.c:2076
 __sk_free+0xef/0x3d0 net/core/sock.c:2087
 sk_free+0x78/0xa0 net/core/sock.c:2098
 sock_put include/net/sock.h:1926 [inline]
 __mptcp_close_ssk+0x4f5/0x700 net/mptcp/protocol.c:2315
 __mptcp_destroy_sock+0x2aa/0x680 net/mptcp/protocol.c:2746
 mptcp_worker+0x767/0xbb0 net/mptcp/protocol.c:2509
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>