------------[ cut here ]------------ WARNING: CPU: 1 PID: 11697 at net/ipv4/route.c:1241 ip_rt_bug+0x2b/0x120 net/ipv4/route.c:1241 Modules linked in: CPU: 1 PID: 11697 Comm: kworker/1:0 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:ip_rt_bug+0x2b/0x120 net/ipv4/route.c:1241 Code: 0f 1e fa 41 54 55 53 48 89 d3 48 83 ec 08 e8 3c 5c 3d f8 66 90 e8 35 5c 3d f8 ba 02 00 00 00 48 89 de 31 ff e8 16 58 75 ff 90 <0f> 0b 90 48 83 c4 08 31 c0 5b 5d 41 5c c3 cc cc cc cc e8 0e 5c 3d RSP: 0000:ffffc90000a187a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88801efcc780 RCX: 1ffffffff28613b7 RDX: ffff88807c2f0000 RSI: ffffffff894cf50a RDI: ffffffff8b909200 RBP: ffff88801efcc780 R08: 0000000000000001 R09: fffffbfff2859c92 R10: ffffffff942ce497 R11: ffffffff8b0014ca R12: ffff888064c3bb80 R13: ffff888016bfa080 R14: ffff88801c736500 R15: ffff88801efcc7d8 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3d7dcb CR3: 0000000021d34000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:450 [inline] dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] ip_send_skb net/ipv4/ip_output.c:1495 [inline] ip_push_pending_frames+0x3ad/0x5b0 net/ipv4/ip_output.c:1515 icmp_push_reply+0x308/0x440 net/ipv4/icmp.c:392 __icmp_send+0xe0e/0x19b0 net/ipv4/icmp.c:777 ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline] ipv4_link_failure+0x426/0xbc0 net/ipv4/route.c:1228 dst_link_failure include/net/dst.h:429 [inline] arp_error_report+0xcf/0x1d0 net/ipv4/arp.c:296 neigh_invalidate+0x21e/0x570 net/core/neighbour.c:1061 neigh_timer_handler+0xc1d/0xf90 net/core/neighbour.c:1148 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers+0x74b/0xaf0 kernel/time/timer.c:2417 __run_timer_base kernel/time/timer.c:2428 [inline] __run_timer_base kernel/time/timer.c:2421 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2437 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2447 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:3055 Code: e8 ac 86 26 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 3a 38 1f 00 48 85 db 0f 85 8b 01 00 00 e8 fc 3c 1f 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41 RSP: 0000:ffffc90002f5f278 EFLAGS: 00000283 RAX: fffff520005ebe76 RBX: 0000000000000000 RCX: ffffc9001252f000 RDX: 0000000000040000 RSI: ffffffff816b1434 RDI: 0000000000000007 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200 R13: ffffffff8e7cca58 R14: ffffffff8e7cca00 R15: ffffc90002f5f3b0 console_unlock+0xae/0x290 kernel/printk/printk.c:3118 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 dev_vprintk_emit drivers/base/core.c:4909 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4920 __dev_printk+0xf5/0x270 drivers/base/core.c:4932 _dev_notice+0xe5/0x120 drivers/base/core.c:4977 usb_parse_configuration drivers/usb/core/config.c:685 [inline] usb_get_configuration+0xd97/0x5e50 drivers/usb/core/config.c:956 usb_enumerate_device drivers/usb/core/hub.c:2483 [inline] usb_new_device+0x1189/0x1a10 drivers/usb/core/hub.c:2621 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2db0/0x4e20 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---------------- Code disassembly (best guess): 0: e8 ac 86 26 00 call 0x2686b1 5: 9c pushf 6: 5b pop %rbx 7: 81 e3 00 02 00 00 and $0x200,%ebx d: 31 ff xor %edi,%edi f: 48 89 de mov %rbx,%rsi 12: e8 3a 38 1f 00 call 0x1f3851 17: 48 85 db test %rbx,%rbx 1a: 0f 85 8b 01 00 00 jne 0x1ab 20: e8 fc 3c 1f 00 call 0x1f3d21 25: fb sti 26: 48 8b 04 24 mov (%rsp),%rax * 2a: 4c 89 fa mov %r15,%rdx <-- trapping instruction 2d: 83 e2 07 and $0x7,%edx 30: 0f b6 00 movzbl (%rax),%eax 33: 38 d0 cmp %dl,%al 35: 7f 08 jg 0x3f 37: 84 c0 test %al,%al 39: 0f 85 a9 02 00 00 jne 0x2e8 3f: 41 rex.B