------------[ cut here ]------------
WARNING: CPU: 1 PID: 7513 at net/ipv4/route.c:1241 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 1 UID: 0 PID: 7513 Comm: sed Not tainted 6.11.0-rc4-syzkaller-00138-g8af174ea863c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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 5b e1 81 f7 66 90 e8 54 e1 81 f7 31 ff 48 89 de ba 02 00 00 00 e8 75 94 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: c76b3c1c2073aa00 RBX: ffff8880608f9c80 RCX: ffffffff8170417a
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606d40
RBP: 0000000000000001 R08: ffffffff937348df R09: 1ffffffff26e691b
R10: dffffc0000000000 R11: fffffbfff26e691c R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888062ed8000 R15: ffff888016b1a080
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55740ab3b0 CR3: 000000001abb8000 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+0x8a5/0xfe0 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:unwind_next_frame+0x1a6c/0x2a00 arch/x86/kernel/unwind_orc.c:648
Code: 24 48 89 ee 4c 89 f2 e8 02 13 00 00 84 c0 0f 84 84 00 00 00 e8 95 49 52 00 49 89 df 48 8b 2c 24 e9 f2 02 00 00 48 8b 7c 24 18 <48> 8d 5f 02 48 83 c7 03 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90003fc70c8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff8e7a3e20 RDI: ffffffff90a8a02e
RBP: ffffffff90a8a032 R08: 0000000000000005 R09: ffffffff814140bf
R10: 0000000000000003 R11: ffff888021745a00 R12: ffffc90003fc75c0
R13: dffffc0000000000 R14: ffffc90003fc71f0 R15: 1ffff920007f8e34
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
 vma_lock_alloc kernel/fork.c:445 [inline]
 vm_area_dup+0x61/0x290 kernel/fork.c:498
 __split_vma+0x1a9/0xc30 mm/mmap.c:2465
 do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2676
 do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
 mmap_region+0x72f/0x2090 mm/mmap.c:2881
 do_mmap+0x8f9/0x1010 mm/mmap.c:1468
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
 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: 0033:0x7f5574325b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007fff86ecde58 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fff86ecde98 RCX: 00007f5574325b74
RDX: 0000000000000005 RSI: 0000000000006000 RDI: 00007f5574080000
RBP: 00007fff86ece230 R08: 0000000000000003 R09: 0000000000003000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f5574301ac0
R13: 00007fff86ece2b8 R14: 0000000000002ee0 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	24 48                	and    $0x48,%al
   2:	89 ee                	mov    %ebp,%esi
   4:	4c 89 f2             	mov    %r14,%rdx
   7:	e8 02 13 00 00       	call   0x130e
   c:	84 c0                	test   %al,%al
   e:	0f 84 84 00 00 00    	je     0x98
  14:	e8 95 49 52 00       	call   0x5249ae
  19:	49 89 df             	mov    %rbx,%r15
  1c:	48 8b 2c 24          	mov    (%rsp),%rbp
  20:	e9 f2 02 00 00       	jmp    0x317
  25:	48 8b 7c 24 18       	mov    0x18(%rsp),%rdi
* 2a:	48 8d 5f 02          	lea    0x2(%rdi),%rbx <-- trapping instruction
  2e:	48 83 c7 03          	add    $0x3,%rdi
  32:	48 89 d8             	mov    %rbx,%rax
  35:	48 c1 e8 03          	shr    $0x3,%rax
  39:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  3e:	84 c0                	test   %al,%al