------------[ cut here ]------------
WARNING: CPU: 1 PID: 5043 at net/ipv4/route.c:1253 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 1 PID: 5043 at net/ipv4/route.c:1253 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1252
Modules linked in:
CPU: 1 PID: 5043 Comm: kworker/1:10 Tainted: G W 6.1.121-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: events pwq_unbound_release_workfn
RIP: 0010:ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1253
Code: ff ff 0f 1f 00 41 57 41 56 41 55 41 54 53 48 89 d3 e8 cf ed 60 f8 66 90 e8 c8 ed 60 f8 48 89 df be 01 00 00 00 e8 bb 35 76 ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0018:ffffc900001e0638 EFLAGS: 00010296
RAX: 2d31b4bf8966ce01 RBX: ffff888060158b40 RCX: ffffffff816b123a
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e6400
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff2249c5f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888060158b40
R13: ffff888060158b98 R14: ffff888027ceb880 R15: ffff88801f699380
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563e11103600 CR3: 0000000065756000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
dst_output include/net/dst.h:444 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x113/0x1a0 net/ipv4/ip_output.c:1599
__icmp_send+0xf9e/0x15a0 net/ipv4/icmp.c:780
ipv4_send_dest_unreach net/ipv4/route.c:1233 [inline]
ipv4_link_failure+0x638/0xa10 net/ipv4/route.c:1240
dst_link_failure include/net/dst.h:423 [inline]
arp_error_report+0x112/0x160 net/ipv4/arp.c:296
neigh_invalidate+0x240/0x460 net/core/neighbour.c:1059
neigh_timer_handler+0x8a1/0x1010 net/core/neighbour.c:1146
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lockdep_unregister_key+0x562/0x600 kernel/locking/lockdep.c:6367
Code: 1f 91 48 c7 c6 b0 f2 6a 81 e8 4a b4 08 00 e8 85 c8 08 00 e9 ea fb ff ff e8 9b 52 47 09 41 f7 c7 00 02 00 00 74 d0 fb 45 84 f6 <75> cf eb e0 0f 0b 45 31 f6 e9 64 ff ff ff 0f 0b e9 a5 fe ff ff 0f
RSP: 0018:ffffc90004a5fb40 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff9200094bf70 RCX: ffffffff97355103
RDX: 0000000000000001 RSI: ffffffff8b0c1020 RDI: ffffffff8b5e6400
RBP: ffffc90004a5fc08 R08: dffffc0000000000 R09: fffffbfff2240148
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90004a5fb80
R13: 1ffff9200094bf6c R14: 0000000000000000 R15: 0000000000000a02
wq_unregister_lockdep kernel/workqueue.c:3500 [inline]
pwq_unbound_release_workfn+0x23d/0x290 kernel/workqueue.c:3738
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 91 xchg %eax,%ecx
1: 48 c7 c6 b0 f2 6a 81 mov $0xffffffff816af2b0,%rsi
8: e8 4a b4 08 00 call 0x8b457
d: e8 85 c8 08 00 call 0x8c897
12: e9 ea fb ff ff jmp 0xfffffc01
17: e8 9b 52 47 09 call 0x94752b7
1c: 41 f7 c7 00 02 00 00 test $0x200,%r15d
23: 74 d0 je 0xfffffff5
25: fb sti
26: 45 84 f6 test %r14b,%r14b
* 29: 75 cf jne 0xfffffffa <-- trapping instruction
2b: eb e0 jmp 0xd
2d: 0f 0b ud2
2f: 45 31 f6 xor %r14d,%r14d
32: e9 64 ff ff ff jmp 0xffffff9b
37: 0f 0b ud2
39: e9 a5 fe ff ff jmp 0xfffffee3
3e: 0f .byte 0xf