------------[ cut here ]------------
WARNING: CPU: 1 PID: 5177 at net/mptcp/subflow.c:1411 subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1411
Modules linked in:
CPU: 1 PID: 5177 Comm: kworker/1:7 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: rcu_gp wait_rcu_exp_gp
RIP: 0010:subflow_data_ready+0x3a0/0x690 net/mptcp/subflow.c:1411
Code: 89 ee e8 53 ca 17 f7 40 84 ed 75 21 e8 19 cf 17 f7 44 89 fe bf 07 00 00 00 e8 7c ca 17 f7 41 83 ff 07 74 09 e8 01 cf 17 f7 90 <0f> 0b 90 e8 f8 ce 17 f7 48 89 df e8 70 b2 ff ff 31 ff 89 c5 89 c6
RSP: 0018:ffffc900001f0598 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888081b68000 RCX: ffffffff8a704194
RDX: ffff8880209e0000 RSI: ffffffff8a70419f RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000007
R10: 000000000000000b R11: 0000000000000000 R12: 1ffff9200003e0b3
R13: ffff88802ee45c00 R14: ffff88802ca05e00 R15: 000000000000000b
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31926000 CR3: 0000000032a53000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 tcp_data_ready+0x14c/0x5b0 net/ipv4/tcp_input.c:5143
 tcp_data_queue+0x19bb/0x5190 net/ipv4/tcp_input.c:5223
 tcp_rcv_state_process+0x11d2/0x4e30 net/ipv4/tcp_input.c:6859
 tcp_v4_do_rcv+0x369/0xa10 net/ipv4/tcp_ipv4.c:1929
 tcp_v4_rcv+0x3892/0x3b40 net/ipv4/tcp_ipv4.c:2329
 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e4/0x510 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish+0x1b8/0x2e0 net/ipv4/ip_input.c:449
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_rcv+0xaf/0xd0 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5534
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5648
 process_backlog+0x101/0x6b0 net/core/dev.c:5976
 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576
 napi_poll net/core/dev.c:6645 [inline]
 net_rx_action+0x956/0xe90 net/core/dev.c:6778
 __do_softirq+0x21a/0x8de kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b
RSP: 0018:ffffc90004f5f9a8 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffffffff92b7f858 RCX: 1ffffffff1e758d3
RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe
RBP: 0000000000000206 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8f3a92d7 R11: ffffffff8d1b8fa8 R12: 1ffff920009ebf3c
R13: ffffc90004f5faf0 R14: 0000000000000000 R15: ffffffff92b7f858
 __debug_object_init+0x347/0x480 lib/debugobjects.c:645
 init_timer_on_stack_key kernel/time/timer.c:802 [inline]
 schedule_timeout+0x103/0x290 kernel/time/timer.c:2181
 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:572 [inline]
 synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:626 [inline]
 rcu_exp_wait_wake+0x8ac/0x15e0 kernel/rcu/tree_exp.h:697
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
----------------
Code disassembly (best guess):
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 c6 ba d9 f6       	call   0xf6d9bad9
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 be 32 da f6       	call   0xf6da32d9
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 1f                	jne    0x42
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 2f                	jne    0x59
* 2a:	bf 01 00 00 00       	mov    $0x1,%edi <-- trapping instruction
  2f:	e8 c5 d2 cb f6       	call   0xf6cbd2f9
  34:	65 8b 05 96 17 75 75 	mov    %gs:0x75751796(%rip),%eax        # 0x757517d1
  3b:	85 c0                	test   %eax,%eax
  3d:	74 12                	je     0x51
  3f:	5b                   	pop    %rbx