------------[ cut here ]------------
WARNING: CPU: 0 PID: 14692 at net/ipv4/route.c:1261 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Modules linked in:
CPU: 0 PID: 14692 Comm: syz-executor.2 Not tainted 6.9.0-rc1-next-20240328-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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 6b f9 b8 f7 66 90 e8 64 f9 b8 f7 48 89 df be 02 00 00 00 e8 77 48 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:ffffc90000007680 EFLAGS: 00010286
RAX: dfb27ad76ad22c00 RBX: ffff888045882000 RCX: ffffffff8172570a
RDX: dffffc0000000000 RSI: ffffffff8bcad5c0 RDI: ffffffff8c1f77c0
RBP: 0000000000000001 R08: ffffffff92f335b7 R09: 1ffffffff25e66b6
R10: dffffc0000000000 R11: fffffbfff25e66b7 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88802dff0000 R15: ffff888017378d00
FS:  00007f32a34046c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6bc2ba8000 CR3: 000000006776a000 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:1492 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1512
 __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+0x8a5/0xfd0 net/core/neighbour.c:1146
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793
 expire_timers kernel/time/timer.c:1844 [inline]
 __run_timers kernel/time/timer.c:2418 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2429
 run_timer_base kernel/time/timer.c:2438 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2448
 __do_softirq+0x2c6/0x980 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:preempt_count_sub+0x32/0x170 kernel/sched/core.c:5898
Code: fb 48 c7 c0 80 b6 72 94 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30 84 c0 0f 85 d0 00 00 00 83 3d 2e 83 0d 13 00 <75> 22 65 8b 05 6d a0 9e 7e 89 c1 81 e1 ff ff ff 7f 39 d9 7c 27 81
RSP: 0018:ffffc90013497010 EFLAGS: 00000246
RAX: 0000000000000004 RBX: 0000000000000001 RCX: ffffffff9472b603
RDX: ffffc9000ab7b000 RSI: 0000000000000816 RDI: 0000000000000001
RBP: ffffc90013497100 R08: ffffffff8140dd65 R09: ffffffff8140d8df
R10: 0000000000000003 R11: ffff888079779e00 R12: ffffc90013497d40
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffc90013497d48
 unwind_next_frame+0x1e65/0x2a00 arch/x86/kernel/unwind_orc.c:672
 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
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2180 [inline]
 slab_free mm/slub.c:4363 [inline]
 kfree+0x149/0x350 mm/slub.c:4484
 tomoyo_realpath_from_path+0x5a9/0x5e0 security/tomoyo/realpath.c:286
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x255/0x500 security/tomoyo/file.c:771
 security_file_open+0x69/0x570 security/security.c:2961
 do_dentry_open+0x327/0x15a0 fs/open.c:942
 do_open fs/namei.c:3642 [inline]
 path_openat+0x2860/0x3240 fs/namei.c:3799
 do_filp_open+0x235/0x490 fs/namei.c:3826
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
 do_sys_open fs/open.c:1421 [inline]
 __do_sys_openat fs/open.c:1437 [inline]
 __se_sys_openat fs/open.c:1432 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1432
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f32a267dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f32a34040c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f32a27abf80 RCX: 00007f32a267dda9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f32a26ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f32a27abf80 R15: 00007fff9e647048
 </TASK>
----------------
Code disassembly (best guess):
   0:	fb                   	sti
   1:	48 c7 c0 80 b6 72 94 	mov    $0xffffffff9472b680,%rax
   8:	48 c1 e8 03          	shr    $0x3,%rax
   c:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  13:	fc ff df
  16:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 d0 00 00 00    	jne    0xf3
  23:	83 3d 2e 83 0d 13 00 	cmpl   $0x0,0x130d832e(%rip)        # 0x130d8358
* 2a:	75 22                	jne    0x4e <-- trapping instruction
  2c:	65 8b 05 6d a0 9e 7e 	mov    %gs:0x7e9ea06d(%rip),%eax        # 0x7e9ea0a0
  33:	89 c1                	mov    %eax,%ecx
  35:	81 e1 ff ff ff 7f    	and    $0x7fffffff,%ecx
  3b:	39 d9                	cmp    %ebx,%ecx
  3d:	7c 27                	jl     0x66
  3f:	81                   	.byte 0x81