------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1259 kfree_skb include/linux/skbuff.h:1236 [inline]
WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1259 ip_rt_bug+0x28/0x120 net/ipv4/route.c:1258
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-syzkaller-07921-g042334a8d424 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ip_rt_bug+0x28/0x120 net/ipv4/route.c:1259
Code: 00 00 f3 0f 1e fa 41 54 55 48 89 d5 53 48 83 ec 08 e8 9c c9 fd f8 66 90 e8 95 c9 fd f8 be 02 00 00 00 48 89 ef e8 d8 6a 7f ff <0f> 0b 48 83 c4 08 31 c0 5b 5d 41 5c c3 e8 76 c9 fd f8 48 8d 7d 10
RSP: 0018:ffffc90000007890 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88807e428000 RCX: 0000000000000100
RDX: ffffffff8c495800 RSI: ffffffff8885f5e8 RDI: 0000000000000000
RBP: ffff88803e2bdc80 R08: 0000000000000000 R09: ffffffff91510d17
R10: 0000000000000001 R11: ffffffff81d56962 R12: ffff88807b0e4a00
R13: ffff88803e2bdc80 R14: 0000000000000000 R15: ffff88803e2bdcd8
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa6a5b86058 CR3: 000000000c571000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dst_output include/net/dst.h:458 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1597 [inline]
 ip_push_pending_frames+0x129/0x2b0 net/ipv4/ip_output.c:1617
 icmp_push_reply+0x320/0x450 net/ipv4/icmp.c:389
 __icmp_send+0xba6/0x1450 net/ipv4/icmp.c:770
 ipv4_send_dest_unreach net/ipv4/route.c:1239 [inline]
 ipv4_link_failure+0x5a9/0x9e0 net/ipv4/route.c:1246
 dst_link_failure include/net/dst.h:437 [inline]
 arp_error_report+0xcb/0x1c0 net/ipv4/arp.c:296
 neigh_invalidate+0x20d/0x560 net/core/neighbour.c:1048
 neigh_timer_handler+0xc39/0x1010 net/core/neighbour.c:1135
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:113
Code: eb 03 83 e3 01 89 de 0f 1f 44 00 00 84 db 75 1b 0f 1f 44 00 00 66 90 0f 1f 44 00 00 0f 00 2d 87 0e a6 00 0f 1f 44 00 00 fb f4 <fa> 5b c3 cc 0f 1f 00 66 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 0f
RSP: 0018:ffffffff8c407d40 EFLAGS: 00000246
RAX: ffffffff8c495800 RBX: 0000000000000000 RCX: ffffffff8a0ba905
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888143642064 R08: 0000000000000001 R09: ffff8880b9836ceb
R10: ffffed1017306d9d R11: 0000000000000000 R12: 0000000000000001
R13: ffff888143642000 R14: ffff888143642064 R15: 0000000000000000
 acpi_idle_do_entry+0x53/0x70 drivers/acpi/processor_idle.c:573
 acpi_idle_enter+0x173/0x290 drivers/acpi/processor_idle.c:711
 cpuidle_enter_state+0xd3/0x6f0 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x305/0x3e0 kernel/sched/idle.c:282
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
 rest_init+0x16f/0x2b0 init/main.c:736
 arch_call_rest_init+0x13/0x30 init/main.c:898
 start_kernel+0x35f/0x4d0 init/main.c:1155
 secondary_startup_64_no_verify+0xf4/0xfb
 </TASK>
----------------
Code disassembly (best guess):
   0:	eb 03                	jmp    0x5
   2:	83 e3 01             	and    $0x1,%ebx
   5:	89 de                	mov    %ebx,%esi
   7:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   c:	84 db                	test   %bl,%bl
   e:	75 1b                	jne    0x2b
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	66 90                	xchg   %ax,%ax
  17:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1c:	0f 00 2d 87 0e a6 00 	verw   0xa60e87(%rip)        # 0xa60eaa
  23:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	fa                   	cli <-- trapping instruction
  2b:	5b                   	pop    %rbx
  2c:	c3                   	retq
  2d:	cc                   	int3
  2e:	0f 1f 00             	nopl   (%rax)
  31:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  38:	00 00
  3a:	55                   	push   %rbp
  3b:	48 89 fd             	mov    %rdi,%rbp
  3e:	53                   	push   %rbx
  3f:	0f                   	.byte 0xf