------------[ cut here ]------------
WARNING: CPU: 2 PID: 3722 at net/ipv4/af_inet.c:153 inet_sock_destruct+0x6b9/0x880 net/ipv4/af_inet.c:153
Modules linked in:
CPU: 2 PID: 3722 Comm: kworker/2:3 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events mptcp_worker
RIP: 0010:inet_sock_destruct+0x6b9/0x880 net/ipv4/af_inet.c:153
Code: 41 8b 9c 24 28 02 00 00 e9 f2 fe ff ff e8 cf a2 90 f9 0f 0b e9 df fd ff ff e8 c3 a2 90 f9 0f 0b e9 30 fe ff ff e8 b7 a2 90 f9 <0f> 0b e9 6b fe ff ff e8 ab a2 90 f9 0f 0b e9 d8 fe ff ff e8 0f 6a
RSP: 0018:ffffc90003d6fa88 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000000aeab8 RCX: 0000000000000000
RDX: ffff888019dbd880 RSI: ffffffff87ea3709 RDI: 0000000000000005
RBP: ffff8880428dbfe8 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000000aeab8 R11: 0000000000000001 R12: ffff8880428dbfc0
R13: ffff8880428dc234 R14: 0000000000000003 R15: ffff888029e12858
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f6f38b0c CR3: 000000001b33c000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __sk_destruct+0x4d/0x710 net/core/sock.c:2067
 sk_destruct net/core/sock.c:2112 [inline]
 __sk_free+0x1a4/0x4a0 net/core/sock.c:2123
 sk_free+0x78/0xa0 net/core/sock.c:2134
 sock_put include/net/sock.h:1927 [inline]
 __mptcp_close_ssk+0x50f/0x780 net/mptcp/protocol.c:2351
 __mptcp_destroy_sock+0x2d7/0x6b0 net/mptcp/protocol.c:2828
 mptcp_worker+0x919/0xdf0 net/mptcp/protocol.c:2586
 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:306
 </TASK>