------------[ cut here ]------------
WARNING: CPU: 0 PID: 20572 at net/ipv4/route.c:1241 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 0 PID: 20572 Comm: syz.2.3532 Not tainted 6.10.0-rc7-syzkaller-00256-gd0d0cd380055 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1241
Code: f3 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 4b 91 b3 f7 66 90 e8 44 91 b3 f7 48 89 df be 02 00 00 00 e8 37 c2 6d ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e
RSP: 0018:ffffc90000007680 EFLAGS: 00010286
RAX: 325885434a525900 RBX: ffff88802292e000 RCX: ffffffff8172daca
RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: ffffffff8c202900
RBP: 0000000000000001 R08: ffffffff92fad617 R09: 1ffffffff25f5ac2
R10: dffffc0000000000 R11: fffffbfff25f5ac3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880638e0000 R15: ffff8880173c0d00
FS:  00007fbe420826c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4be20cafa8 CR3: 000000007aeac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb net/ipv4/ip_output.c:1492 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1512
 __icmp_send+0xf89/0x14e0 net/ipv4/icmp.c:777
 ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline]
 ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1228
 dst_link_failure include/net/dst.h:429 [inline]
 arp_error_report+0x114/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x244/0x470 net/core/neighbour.c:1061
 neigh_timer_handler+0x8a5/0xfd0 net/core/neighbour.c:1148
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 9e b4 6a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 83 64 d4 f5 65 8b 05 34 9b 72 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000a6afa60 EFLAGS: 00000206
RAX: 325885434a525900 RBX: 1ffff920014d5f50 RCX: ffffffff8172daca
RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: 0000000000000001
RBP: ffffc9000a6afaf0 R08: ffffffff92fad687 R09: 1ffffffff25f5ad0
R10: dffffc0000000000 R11: fffffbfff25f5ad1 R12: dffffc0000000000
R13: 1ffff920014d5f4c R14: ffffc9000a6afa80 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock+0x18c/0x1e0 kernel/sched/wait.c:108
 io_cqring_wake io_uring/io_uring.h:277 [inline]
 io_cq_unlock_post io_uring/io_uring.c:667 [inline]
 __io_cqring_overflow_flush+0x504/0x690 io_uring/io_uring.c:705
 io_cqring_do_overflow_flush io_uring/io_uring.c:717 [inline]
 io_cqring_wait io_uring/io_uring.c:2525 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3290 [inline]
 __se_sys_io_uring_enter+0x1b76/0x2670 io_uring/io_uring.c:3182
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe41375bd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbe42082048 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fbe41503f60 RCX: 00007fbe41375bd9
RDX: 0000000000400000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fbe413e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbe41503f60 R15: 00007fbe4162fa78
 </TASK>
----------------
Code disassembly (best guess):
   0:	9c                   	pushf
   1:	8f 44 24 20          	pop    0x20(%rsp)
   5:	42 80 3c 23 00       	cmpb   $0x0,(%rbx,%r12,1)
   a:	74 08                	je     0x14
   c:	4c 89 f7             	mov    %r14,%rdi
   f:	e8 9e b4 6a f6       	call   0xf66ab4b2
  14:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  19:	75 52                	jne    0x6d
  1b:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 83 64 d4 f5       	call   0xf5d464b2 <-- trapping instruction
  2f:	65 8b 05 34 9b 72 74 	mov    %gs:0x74729b34(%rip),%eax        # 0x74729b6a
  36:	85 c0                	test   %eax,%eax
  38:	74 43                	je     0x7d
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss