------------[ cut here ]------------
WARNING: CPU: 1 PID: 16798 at net/ipv4/route.c:1261 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Modules linked in:
CPU: 1 PID: 16798 Comm: modprobe Not tainted 6.8.0-syzkaller-05204-g237bb5f7f7f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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 0b 25 c5 f7 66 90 e8 04 25 c5 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: 908c7b2ebdc41300 RBX: ffff88802b2d2c80 RCX: ffffffff81720c2a
RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660
RBP: 0000000000000001 R08: ffffffff92cc7597 R09: 1ffffffff2598eb2
R10: dffffc0000000000 R11: fffffbfff2598eb3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88802abf3980 R15: ffff8880167f9380
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9230e5d6a8 CR3: 000000006d660000 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: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:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x18/0x90 kernel/kcov.c:284
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 80 ce 03 00 65 8b 05 a0 db 6e 7e <a9> 00 01 ff 00 74 10 a9 00 01 00 00 74 57 83 b9 14 16 00 00 00 74
RSP: 0018:ffffc900031cf8b0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffffc900031cfa88 RCX: ffff88803f2e5a00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00007f9230f01fff
RBP: 00007f9230f01fff R08: ffffffff8b64b991 R09: ffffffff8b64b8ec
R10: 0000000000000003 R11: ffff88803f2e5a00 R12: 0000000000000001
R13: 1ffff110102cc780 R14: ffffffffffffffff R15: ffff888081663c00
 mas_next_slot+0x181/0xf90 lib/maple_tree.c:4645
 mas_find+0x950/0xbb0 lib/maple_tree.c:6070
 vma_next include/linux/mm.h:961 [inline]
 validate_mm+0x3e6/0x530 mm/mmap.c:289
 mmap_region+0x1bfb/0x1fa0 mm/mmap.c:2952
 do_mmap+0x7af/0xe60 mm/mmap.c:1387
 vm_mmap_pgoff+0x1e3/0x420 mm/util.c:573
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9230f51b74
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:00007ffe96ac97a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe96ac9858 RCX: 00007f9230f51b74
RDX: 0000000000000003 RSI: 000000000000cdd0 RDI: 00007f9230e5e000
RBP: 00007ffe96ac9f40 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000032 R11: 0000000000000246 R12: 00007f9230f2e5c0
R13: 00007ffe96ac9fc8 R14: 00007f9230e6add0 R15: 00007f9230e5e000
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	f3 0f 1e fa          	endbr64
  16:	4c 8b 04 24          	mov    (%rsp),%r8
  1a:	65 48 8b 0c 25 80 ce 	mov    %gs:0x3ce80,%rcx
  21:	03 00
  23:	65 8b 05 a0 db 6e 7e 	mov    %gs:0x7e6edba0(%rip),%eax        # 0x7e6edbca
* 2a:	a9 00 01 ff 00       	test   $0xff0100,%eax <-- trapping instruction
  2f:	74 10                	je     0x41
  31:	a9 00 01 00 00       	test   $0x100,%eax
  36:	74 57                	je     0x8f
  38:	83 b9 14 16 00 00 00 	cmpl   $0x0,0x1614(%rcx)
  3f:	74                   	.byte 0x74