------------[ cut here ]------------
WARNING: CPU: 1 PID: 9531 at net/ipv4/route.c:1274 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 1 PID: 9531 at net/ipv4/route.c:1274 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1273
Modules linked in:
CPU: 1 PID: 9531 Comm: dhcpcd-run-hook Not tainted 6.1.139-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1274
Code: 41 ff ff ff 90 41 57 41 56 41 55 41 54 53 48 89 d3 e8 df 9d eb f8 66 90 e8 d8 9d eb f8 48 89 df be 01 00 00 00 e8 1b e3 7e ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0000:ffffc900001e0638 EFLAGS: 00010292
RAX: a12db52eb6286e00 RBX: ffff88807e34aa00 RCX: a12db52eb6286e00
RDX: dffffc0000000000 RSI: ffffffff8a6c0000 RDI: ffffffff8abf1020
RBP: ffff8880611b8e00 R08: dffffc0000000000 R09: fffffbfff211705b
R10: fffffbfff211705b R11: 1ffffffff211705a R12: ffff8880611b8e30
R13: ffff88807e34aa58 R14: ffff88807e34aa00 R15: ffff8881401d1380
FS: 00007f81b00cec80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81b0470a28 CR3: 00000000771ca000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
dst_output include/net/dst.h:453 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x129/0x1c0 net/ipv4/ip_output.c:1599
__icmp_send+0xfbb/0x1320 net/ipv4/icmp.c:785
ipv4_send_dest_unreach net/ipv4/route.c:1254 [inline]
ipv4_link_failure+0x65c/0xa10 net/ipv4/route.c:1261
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x10e/0x160 net/ipv4/arp.c:296
neigh_invalidate+0x22c/0x450 net/core/neighbour.c:1059
neigh_timer_handler+0x911/0x1080 net/core/neighbour.c:1146
call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2a1/0x920 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:661
irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 4e 07 6e f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 d6 81 3e f7 65 8b 05 77 43 e9 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0000:ffffc90004aaf620 EFLAGS: 00000206
RAX: a12db52eb6286e00 RBX: 0000000000000a02 RCX: a12db52eb6286e00
RDX: dffffc0000000000 RSI: ffffffff8a6c0000 RDI: 0000000000000001
RBP: ffffc90004aaf6b0 R08: dffffc0000000000 R09: fffffbfff2117049
R10: fffffbfff2117049 R11: 1ffffffff2117048 R12: dffffc0000000000
R13: 000000000000003f R14: ffff88813fffacc0 R15: 1ffff92000955ec4
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:3165 [inline]
__rmqueue_pcplist+0xa6c/0xfb0 mm/page_alloc.c:3785
rmqueue_pcplist mm/page_alloc.c:3827 [inline]
rmqueue mm/page_alloc.c:3870 [inline]
get_page_from_freelist+0x7cd/0x1ac0 mm/page_alloc.c:4325
__alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5606
__folio_alloc+0xe/0x30 mm/page_alloc.c:5638
vma_alloc_folio+0x4a3/0x900 mm/mempolicy.c:2243
alloc_page_vma include/linux/gfp.h:284 [inline]
wp_page_copy+0x26c/0x1640 mm/memory.c:3153
handle_pte_fault mm/memory.c:5049 [inline]
__handle_mm_fault mm/memory.c:5173 [inline]
handle_mm_fault+0x1ca6/0x3e70 mm/memory.c:5294
do_user_addr_fault+0x51f/0xb10 arch/x86/mm/fault.c:1340
handle_page_fault arch/x86/mm/fault.c:1431 [inline]
exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1487
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f81b026d2cd
Code: 00 e8 57 b3 ff ff 89 c3 85 c0 0f 85 d5 01 00 00 48 83 05 8d 15 10 00 04 48 8b 1d c6 ac 0f 00 48 8b 83 38 0b 00 00 66 0f ef c0 <48> c7 83 28 0a 00 00 00 00 00 00 0f 11 83 18 0a 00 00 0f 11 83 68
RSP: 002b:00007fff473990d0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007f81b0470000 RCX: 00007f81b01d6f07
RDX: 0000000000000000 RSI: 00007fff473990a8 RDI: 0000000000000002
RBP: 0000561c7a88ac30 R08: 00007f81b0369b60 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000561c7a898358
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 74 05 je 0x7
2: e8 4e 07 6e f7 call 0xf76e0755
7: 48 c7 44 24 20 00 00 movq $0x0,0x20(%rsp)
e: 00 00
10: 9c pushf
11: 8f 44 24 20 pop 0x20(%rsp)
15: f6 44 24 21 02 testb $0x2,0x21(%rsp)
1a: 75 4b jne 0x67
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 d6 81 3e f7 call 0xf73e8205 <-- trapping instruction
2f: 65 8b 05 77 43 e9 75 mov %gs:0x75e94377(%rip),%eax # 0x75e943ad
36: 85 c0 test %eax,%eax
38: 74 3c je 0x76
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss