------------[ cut here ]------------
WARNING: CPU: 1 PID: 7844 at net/ipv4/route.c:1241 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 1 UID: 0 PID: 7844 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-00144-g66418447d27b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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 0b 3c 73 f7 66 90 e8 04 3c 73 f7 31 ff 48 89 de ba 02 00 00 00 e8 35 b3 6a 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: 0000:ffffc90000a18680 EFLAGS: 00010286
RAX: f8a3a603befd7000 RBX: ffff888032b3db40 RCX: ffffffff8170cfaa
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c610ce0
RBP: 0000000000000001 R08: ffffffff942d089f R09: ffffffff8a21ae1b
R10: dffffc0000000000 R11: fffffbfff285a114 R12: dffffc0000000000
R13: ffffc90000a188f8 R14: ffff888067289d80 R15: ffff8881456d21c0
FS:  000055556fe8c500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2abf627ee4 CR3: 000000005b376000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ip_local_out net/ipv4/ip_output.c:130 [inline]
 ip_send_skb net/ipv4/ip_output.c:1496 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1516
 __icmp_send+0x1017/0x15c0 net/ipv4/icmp.c:780
 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:1794
 expire_timers kernel/time/timer.c:1845 [inline]
 __run_timers kernel/time/timer.c:2419 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
 run_timer_base kernel/time/timer.c:2439 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
 handle_softirqs+0x2c5/0x980 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:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d 44 28 9d 0c 48 89 de 5b e9 73 e8 5d 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d7 03 00 65 8b 15 a0 ed 6e 7e 81 e2 00 01 ff 00
RSP: 0000:ffffc9000b3e7540 EFLAGS: 00000202
RAX: ffffffff820bc424 RBX: 0000000000000008 RCX: ffff88801efa8000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
RBP: 1ffff11027fff4e4 R08: ffffffff820bc38a R09: 1ffffffff285a100
R10: dffffc0000000000 R11: fffffbfff285a101 R12: dffffc0000000000
R13: 000000000007b42c R14: ffffffff820bc276 R15: ffff88813fffa720
 pfn_valid+0x2a4/0x450 include/linux/mmzone.h:2052
 page_table_check_set+0x22/0x540 mm/page_table_check.c:110
 __page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225
 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
 set_ptes include/linux/pgtable.h:267 [inline]
 set_pte_range+0x724/0x750 mm/memory.c:5042
 filemap_map_order0_folio mm/filemap.c:3623 [inline]
 filemap_map_pages+0x11c6/0x20d0 mm/filemap.c:3677
 do_fault_around mm/memory.c:5255 [inline]
 do_read_fault mm/memory.c:5288 [inline]
 do_fault mm/memory.c:5431 [inline]
 do_pte_missing mm/memory.c:3965 [inline]
 handle_pte_fault+0x2b98/0x6820 mm/memory.c:5766
 __handle_mm_fault mm/memory.c:5909 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6077
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f2abf59952b
Code: b9 cd cc cc cc cc cc cc cc 48 89 f1 0f 1f 00 48 89 f8 48 89 fe 48 83 e9 01 49 f7 e1 48 c1 ea 03 48 8d 04 92 48 01 c0 48 29 c6 <41> 0f b6 04 30 88 01 48 89 f8 48 89 d7 48 83 f8 09 77 d2 48 89 c8
RSP: 002b:00007ffd71a63188 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007ffd71a636f0 RCX: 00007ffd71a63697
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 0000000000000016 R08: 00007f2abf627ee0 R09: cccccccccccccccd
R10: 00000000ffffffff R11: 0000000000000001 R12: 0000000000000075
R13: 00007ffd71a63870 R14: 00007ffd71a63698 R15: 0000000000000004
 </TASK>
----------------
Code disassembly (best guess):
   0:	8b 3d 44 28 9d 0c    	mov    0xc9d2844(%rip),%edi        # 0xc9d284a
   6:	48 89 de             	mov    %rbx,%rsi
   9:	5b                   	pop    %rbx
   a:	e9 73 e8 5d 00       	jmp    0x5de882
   f:	0f 1f 00             	nopl   (%rax)
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 04 24          	mov    (%rsp),%rax
* 2a:	65 48 8b 0c 25 c0 d7 	mov    %gs:0x3d7c0,%rcx <-- trapping instruction
  31:	03 00
  33:	65 8b 15 a0 ed 6e 7e 	mov    %gs:0x7e6eeda0(%rip),%edx        # 0x7e6eedda
  3a:	81 e2 00 01 ff 00    	and    $0xff0100,%edx