------------[ cut here ]------------
WARNING: CPU: 0 PID: 12294 at net/ipv4/route.c:1254 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254
Modules linked in:
CPU: 0 UID: 0 PID: 12294 Comm: syz.0.1764 Not tainted 6.12.0-syzkaller-05491-g5d066766c5f1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254
Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 6b 9d 63 f7 66 90 e8 64 9d 63 f7 31 ff 48 89 de ba 02 00 00 00 e8 e5 3e 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: 0018:ffffc90000007680 EFLAGS: 00010286
RAX: 6fd6d4530de9a100 RBX: ffff88806375ea00 RCX: ffffffff8171048a
RDX: dffffc0000000000 RSI: ffffffff8c2ad300 RDI: ffffffff8c820860
RBP: 0000000000000001 R08: ffffffff9454692f R09: ffffffff8a31658b
R10: dffffc0000000000 R11: fffffbfff28a8d26 R12: dffffc0000000000
R13: ffffc900000078f8 R14: ffff88805f320000 R15: ffff888145ab1b00
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c39ccec CR3: 000000005a4b2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip_local_out net/ipv4/ip_output.c:130 [inline]
ip_send_skb net/ipv4/ip_output.c:1505 [inline]
ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1525
__icmp_send+0x1013/0x15c0 net/ipv4/icmp.c:779
ipv4_send_dest_unreach net/ipv4/route.c:1234 [inline]
ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1241
dst_link_failure include/net/dst.h:429 [inline]
arp_error_report+0x114/0x160 net/ipv4/arp.c:296
neigh_invalidate+0x247/0x470 net/core/neighbour.c:1010
neigh_timer_handler+0x8a5/0xfe0 net/core/neighbour.c:1097
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: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+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:stack_trace_consume_entry+0x0/0x280 kernel/stacktrace.c:83
Code: f2 7e 00 e9 6a ff ff ff e8 6d 10 59 0a 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 89 fb 48
RSP: 0018:ffffc9000d4e7018 EFLAGS: 00000282
RAX: ffffffff81571c67 RBX: ffffc9000d4e7020 RCX: ffffffff91a05000
RDX: ffffffff91bb4101 RSI: ffffffff81571c67 RDI: ffffc9000d4e7100
RBP: ffffc9000d4e70b0 R08: ffffc9000d4e7c20 R09: 0000000000000000
R10: ffffc9000d4e7070 R11: ffffffff8180c110 R12: ffff888025111e00
R13: ffffffff8180c110 R14: ffffc9000d4e7100 R15: 0000000000000000
arch_stack_walk+0x10e/0x150 arch/x86/kernel/stacktrace.c:27
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kmem_cache_free+0x1a2/0x420 mm/slub.c:4681
pagetable_pte_dtor include/linux/mm.h:3008 [inline]
___pte_free_tlb+0x2b/0x140 arch/x86/mm/pgtable.c:55
__pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
free_pte_range mm/memory.c:194 [inline]
free_pmd_range mm/memory.c:212 [inline]
free_pud_range mm/memory.c:246 [inline]
free_p4d_range mm/memory.c:280 [inline]
free_pgd_range+0x727/0xdd0 mm/memory.c:360
free_pgtables+0x719/0x840
exit_mmap+0x48e/0xc40 mm/mmap.c:1934
__mmput+0x115/0x390 kernel/fork.c:1348
exit_mm+0x220/0x310 kernel/exit.c:570
do_exit+0x9b2/0x28e0 kernel/exit.c:925
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3016
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fae7157e819
Code: Unable to access opcode bytes at 0x7fae7157e7ef.
RSP: 002b:00007fae6f3d50e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fae71736088 RCX: 00007fae7157e819
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fae71736088
RBP: 00007fae71736080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fae7173608c
R13: 0000000000000000 R14: 00007ffc920b52f0 R15: 00007ffc920b53d8
----------------
Code disassembly (best guess):
0: f2 7e 00 bnd jle 0x3
3: e9 6a ff ff ff jmp 0xffffff72
8: e8 6d 10 59 0a call 0xa59107a
d: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
14: 00 00 00
17: 0f 1f 00 nopl (%rax)
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: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
* 2a: f3 0f 1e fa endbr64 <-- trapping instruction
2e: 55 push %rbp
2f: 41 57 push %r15
31: 41 56 push %r14
33: 41 55 push %r13
35: 41 54 push %r12
37: 53 push %rbx
38: 48 83 ec 18 sub $0x18,%rsp
3c: 48 89 fb mov %rdi,%rbx
3f: 48 rex.W