------------[ cut here ]------------
WARNING: CPU: 1 PID: 5252 at net/ipv4/route.c:1253 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 1 PID: 5252 at net/ipv4/route.c:1253 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1252
Modules linked in:
CPU: 1 PID: 5252 Comm: kworker/1:11 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: rcu_gp process_srcu
RIP: 0010:ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1253
Code: ff ff 0f 1f 00 41 57 41 56 41 55 41 54 53 48 89 d3 e8 ff 81 60 f8 66 90 e8 f8 81 60 f8 48 89 df be 01 00 00 00 e8 4b 1e 76 ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0018:ffffc900001e0638 EFLAGS: 00010296
RAX: 5580e8b4fb54eb01 RBX: ffff888062ab8b40 RCX: ffffffff816b127a
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e6980
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff224a05f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888062ab8b40
R13: ffff888062ab8b98 R14: ffff8880274754c0 R15: ffff888145ed1380
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16a67a7bac CR3: 00000000507fd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0x113/0x1a0 net/ipv4/ip_output.c:1599
 __icmp_send+0xf9e/0x15a0 net/ipv4/icmp.c:780
 ipv4_send_dest_unreach net/ipv4/route.c:1233 [inline]
 ipv4_link_failure+0x638/0xa10 net/ipv4/route.c:1240
 dst_link_failure include/net/dst.h:423 [inline]
 arp_error_report+0x112/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x240/0x460 net/core/neighbour.c:1059
 neigh_timer_handler+0x8a1/0x1010 net/core/neighbour.c:1146
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:arch_test_and_set_bit arch/x86/include/asm/bitops.h:138 [inline]
RIP: 0010:test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:72 [inline]
RIP: 0010:queue_delayed_work_on+0x1fd/0x250 kernel/workqueue.c:1703
Code: 11 e8 57 ec 30 00 4d 85 e4 75 16 e8 4d ec 30 00 eb 15 e8 46 ec 30 00 e8 51 25 59 09 4d 85 e4 74 ea e8 37 ec 30 00 fb 45 84 ff <0f> 94 c0 48 c7 44 24 20 0e 36 e0 45 48 b9 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90004f2fb80 EFLAGS: 00000246
RAX: ffffffff8159b069 RBX: 0000000000000000 RCX: ffff88801af35940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004f2fc50 R08: ffffffff8159b03f R09: fffffbfff224a050
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200
R13: 1ffff920009e5f74 R14: 0000000000000046 R15: 0000000000000000
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	11 e8                	adc    %ebp,%eax
   2:	57                   	push   %rdi
   3:	ec                   	in     (%dx),%al
   4:	30 00                	xor    %al,(%rax)
   6:	4d 85 e4             	test   %r12,%r12
   9:	75 16                	jne    0x21
   b:	e8 4d ec 30 00       	call   0x30ec5d
  10:	eb 15                	jmp    0x27
  12:	e8 46 ec 30 00       	call   0x30ec5d
  17:	e8 51 25 59 09       	call   0x959256d
  1c:	4d 85 e4             	test   %r12,%r12
  1f:	74 ea                	je     0xb
  21:	e8 37 ec 30 00       	call   0x30ec5d
  26:	fb                   	sti
  27:	45 84 ff             	test   %r15b,%r15b
* 2a:	0f 94 c0             	sete   %al <-- trapping instruction
  2d:	48 c7 44 24 20 0e 36 	movq   $0x45e0360e,0x20(%rsp)
  34:	e0 45
  36:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  3d:	fc ff df