------------[ cut here ]------------
WARNING: CPU: 1 PID: 8 at net/ipv4/tcp_input.c:2132 tcp_timeout_mark_lost net/ipv4/tcp_input.c:2132 [inline]
WARNING: CPU: 1 PID: 8 at net/ipv4/tcp_input.c:2132 tcp_enter_loss+0xdb2/0x1050 net/ipv4/tcp_input.c:2145
Modules linked in:
CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 6.0.0-rc1-syzkaller-00409-ge3f259d33c0e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:tcp_timeout_mark_lost net/ipv4/tcp_input.c:2132 [inline]
RIP: 0010:tcp_enter_loss+0xdb2/0x1050 net/ipv4/tcp_input.c:2145
Code: 00 00 89 ab 48 09 00 00 e9 b6 fc ff ff 48 8d 83 c8 0a 00 00 48 89 44 24 08 4c 8d b3 64 08 00 00 e9 ea f7 ff ff e8 be a6 9c f9 <0f> 0b e9 b1 f6 ff ff e8 b2 a6 9c f9 0f 0b e9 7c fb ff ff e8 16 fe
RSP: 0018:ffffc900001e0ac8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88807a690c00 RCX: 0000000000000100
RDX: ffff88813fe5d880 RSI: ffffffff87df6492 RDI: 0000000000000004
RBP: 0000000000000009 R08: 0000000000000004 R09: 0000000000000011
R10: 0000000000000009 R11: 0000000000000002 R12: 0000000000000011
R13: 0000000000000008 R14: 0000000000000001 R15: 0000000000000009
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a970c8 CR3: 000000000bc8e000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 tcp_retransmit_timer+0x25a3/0x33d0 net/ipv4/tcp_timer.c:503
 tcp_write_timer_handler net/ipv4/tcp_timer.c:620 [inline]
 tcp_write_timer_handler+0x4de/0x9f0 net/ipv4/tcp_timer.c:594
 tcp_write_timer+0xa2/0x2b0 net/ipv4/tcp_timer.c:637
 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_many_cond+0x5c3/0x1430 kernel/smp.c:988
Code: 89 ee e8 b0 ac 0a 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 cf af 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 b5 0b 00 00 8b 43 08 31
RSP: 0018:ffffc900000d7948 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9a42580 RCX: 0000000000000000
RDX: ffff88813fe5d880 RSI: ffffffff81715b81 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10173484b1
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1302 [inline]
 text_poke_bp_batch+0x59e/0x6c0 arch/x86/kernel/alternative.c:1559
 text_poke_flush arch/x86/kernel/alternative.c:1660 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:1657 [inline]
 text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1667
 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x32f/0x410 kernel/jump_label.c:801
 static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
 static_key_enable+0x16/0x20 kernel/jump_label.c:190
 toggle_allocation_gate mm/kfence/core.c:811 [inline]
 toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:803
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 ee                	mov    %ebp,%esi
   2:	e8 b0 ac 0a 00       	callq  0xaacb7
   7:	85 ed                	test   %ebp,%ebp
   9:	74 48                	je     0x53
   b:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  10:	49 89 c4             	mov    %rax,%r12
  13:	83 e0 07             	and    $0x7,%eax
  16:	49 c1 ec 03          	shr    $0x3,%r12
  1a:	48 89 c5             	mov    %rax,%rbp
  1d:	4d 01 f4             	add    %r14,%r12
  20:	83 c5 03             	add    $0x3,%ebp
  23:	e8 cf af 0a 00       	callq  0xaaff7
  28:	f3 90                	pause
* 2a:	41 0f b6 04 24       	movzbl (%r12),%eax <-- trapping instruction
  2f:	40 38 c5             	cmp    %al,%bpl
  32:	7c 08                	jl     0x3c
  34:	84 c0                	test   %al,%al
  36:	0f 85 b5 0b 00 00    	jne    0xbf1
  3c:	8b 43 08             	mov    0x8(%rbx),%eax
  3f:	31                   	.byte 0x31