------------[ cut here ]------------
WARNING: CPU: 1 PID: 12 at net/ipv4/route.c:1241 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.11.0-rc2-syzkaller-00326-gf547e956dd84 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound linkwatch_event
RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 0b 87 82 f7 66 90 e8 04 87 82 f7 31 ff 48 89 de ba 02 00 00 00 e8 15 a6 6b 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:ffffc90000a18680 EFLAGS: 00010286
RAX: 6e1f128415750700 RBX: ffff888028a4ac80 RCX: ffffffff81702eca
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c6060c0
RBP: 0000000000000001 R08: ffffffff9372e89f R09: 1ffffffff26e5d13
R10: dffffc0000000000 R11: fffffbfff26e5d14 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880753b3b80 R15: ffff888016b72080
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7223fdfb8 CR3: 000000002d148000 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:1495 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1515
 __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:kasan_mem_to_shadow include/linux/kasan.h:61 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x37/0x290 mm/kasan/generic.c:189
Code: 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 48 89 fd 48 c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 <48> 89 fb 48 c1 eb 03 49 ba 00 00 00 00 00 fc ff df 4e 8d 1c 13 49
RSP: 0018:ffffc900001179a8 EFLAGS: 00000202
RAX: 1ffff11002f5ab01 RBX: dffffc0000000000 RCX: ffffffff816eedfc
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fc81c20
RBP: 000000000001ffff R08: ffffffff8fc81c28 R09: 1ffffffff1f90384
R10: dffffc0000000000 R11: fffffbfff1f90385 R12: 0000000000000010
R13: ffffffff8fc81cb0 R14: ffffffff8fc81c20 R15: ffffffff8fc81c70
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_long_read include/linux/atomic/atomic-instrumented.h:3188 [inline]
 __mutex_owner kernel/locking/mutex.c:81 [inline]
 mutex_spin_on_owner+0x26c/0x330 kernel/locking/mutex.c:359
 mutex_optimistic_spin kernel/locking/mutex.c:476 [inline]
 __mutex_lock_common kernel/locking/mutex.c:612 [inline]
 __mutex_lock+0x2cb/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess):
   0:	01 48 85             	add    %ecx,-0x7b(%rax)
   3:	f6 0f 84             	testb  $0x84,(%rdi)
   6:	a0 01 00 00 4c 8d 04 	movabs 0x4937048d4c000001,%al
   d:	37 49
   f:	39 f8                	cmp    %edi,%eax
  11:	0f 82 56 02 00 00    	jb     0x26d
  17:	48 89 fd             	mov    %rdi,%rbp
  1a:	48 c1 ed 2f          	shr    $0x2f,%rbp
  1e:	81 fd fe ff 01 00    	cmp    $0x1fffe,%ebp
  24:	0f 86 43 02 00 00    	jbe    0x26d
* 2a:	48 89 fb             	mov    %rdi,%rbx <-- trapping instruction
  2d:	48 c1 eb 03          	shr    $0x3,%rbx
  31:	49 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%r10
  38:	fc ff df
  3b:	4e 8d 1c 13          	lea    (%rbx,%r10,1),%r11
  3f:	49                   	rex.WB