------------[ cut here ]------------
WARNING: CPU: 1 PID: 142 at net/ipv4/route.c:1261 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Modules linked in:
CPU: 1 PID: 142 Comm: kworker/u8:5 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Code: f3 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 0b e1 c0 f7 66 90 e8 04 e1 c0 f7 48 89 df be 02 00 00 00 e8 27 80 6e 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:ffffc90000a08680 EFLAGS: 00010286
RAX: 32af762f5e142000 RBX: ffff88801f7acdc0 RCX: ffffffff81720c2a
RDX: dffffc0000000000 RSI: ffffffff8baac1e0 RDI: ffffffff8bfed360
RBP: 0000000000000001 R08: ffffffff92ce1597 R09: 1ffffffff259c2b2
R10: dffffc0000000000 R11: fffffbfff259c2b3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888064fb8000 R15: ffff888016bd1380
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000006a4b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000001 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb net/ipv4/ip_output.c:1493 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1513
 __icmp_send+0xfb0/0x1500 net/ipv4/icmp.c:770
 ipv4_send_dest_unreach net/ipv4/route.c:1241 [inline]
 ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1248
 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:1059
 neigh_timer_handler+0x8a5/0xfb0 net/core/neighbour.c:1146
 call_timer_fn+0x17e/0x600 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2408 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2419
 run_timer_base kernel/time/timer.c:2428 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2438
 __do_softirq+0x2bc/0x943 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
 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+0x3a/0x290 mm/kasan/generic.c:189
Code: 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 ff c8 4d
RSP: 0018:ffffc9000264f9f0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8f872ce8 RCX: ffffffff8171c080
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f872ce8
RBP: 000000000001ffff R08: ffffffff8f872cf0 R09: 1ffffffff259c2a0
R10: dffffc0000000000 R11: fffffbfff259c2a1 R12: 1ffff920004c9f50
R13: ffffffff8b40799b R14: ffff88805eb80a80 R15: dffffc0000000000
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:505 [inline]
 cpu_online include/linux/cpumask.h:1120 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xb0/0x9d0 kernel/locking/lockdep.c:5765
 rcu_lock_release include/linux/rcupdate.h:308 [inline]
 rcu_read_unlock include/linux/rcupdate.h:783 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x290/0x610 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
----------------
Code disassembly (best guess):
   0:	f6 0f 84             	testb  $0x84,(%rdi)
   3:	a0 01 00 00 4c 8d 04 	movabs 0x4937048d4c000001,%al
   a:	37 49
   c:	39 f8                	cmp    %edi,%eax
   e:	0f 82 56 02 00 00    	jb     0x26a
  14:	48 89 fd             	mov    %rdi,%rbp
  17:	48 c1 ed 2f          	shr    $0x2f,%rbp
  1b:	81 fd fe ff 01 00    	cmp    $0x1fffe,%ebp
  21:	0f 86 43 02 00 00    	jbe    0x26a
  27:	48 89 fb             	mov    %rdi,%rbx
* 2a:	48 c1 eb 03          	shr    $0x3,%rbx <-- trapping instruction
  2e:	49 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%r10
  35:	fc ff df
  38:	4e 8d 1c 13          	lea    (%rbx,%r10,1),%r11
  3c:	49 ff c8             	dec    %r8
  3f:	4d                   	rex.WRB