ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci4 WARNING: CPU: 1 PID: 8429 at kernel/workqueue.c:2256 __queue_work+0xd38/0xfb0 kernel/workqueue.c:2254 Modules linked in: CPU: 1 UID: 0 PID: 8429 Comm: syz.3.9083 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__queue_work+0xd38/0xfb0 kernel/workqueue.c:2254 Code: 42 80 3c 20 00 74 08 4c 89 ef e8 53 0f 99 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 20 e1 89 8b 4c 89 fa e8 99 39 f9 ff 90 <0f> 0b 90 90 e9 1a f5 ff ff e8 8a 9c 35 00 90 0f 0b 90 e9 dd fc ff RSP: 0018:ffffc90000a08b10 EFLAGS: 00010046 RAX: fcda255cb481fb00 RBX: 0000000000000100 RCX: ffff88802e760000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff1100a9ab238 R08: ffff8880b8724253 R09: 1ffff110170e484a R10: dffffc0000000000 R11: ffffed10170e484b R12: dffffc0000000000 R13: ffff88806103c988 R14: 0000000000000008 R15: ffff888054d59178 FS: 0000000000000000(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000001ac030 CR3: 0000000056c14000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 0000000000000047 DR2: 0000000000000005 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1793 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x646/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x283/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7288 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 ab 88 14 f6 e8 76 e3 4b f6 fb bf 01 00 00 00 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc90003597680 EFLAGS: 00000282 RAX: fcda255cb481fb00 RBX: 0000000000000000 RCX: fcda255cb481fb00 RDX: 0000000000000006 RSI: ffffffff8d9b9e62 RDI: 0000000000000001 RBP: ffffc90003597730 R08: ffffffff8fa3a537 R09: 1ffffffff1f474a6 R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006b2ed0 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lockdep_unregister_key+0x2c5/0x310 kernel/locking/lockdep.c:6616 Code: 65 48 8b 05 4d 1d 03 11 48 3b 44 24 10 0f 84 26 fe ff ff e8 0d c4 dc 09 e8 38 c5 dc 09 41 f7 c7 00 02 00 00 74 bd fb 40 84 ed <75> bc eb cd 90 0f 0b 90 e9 19 ff ff ff 90 0f 0b 90 e9 2a ff ff ff RSP: 0018:ffffc900035977f8 EFLAGS: 00000202 RAX: fcda255cb481fb00 RBX: 0000000000000001 RCX: fcda255cb481fb00 RDX: ffffffff93647338 RSI: ffffffff8d9cd9ce RDI: ffffffff8be33e80 RBP: ffff888079e62201 R08: 0000000000000000 R09: ffffffff81aa9548 R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 0000000000000000 R13: 0000000000001000 R14: 0000000000000001 R15: 0000000000000a03 __qdisc_destroy+0x166/0x420 net/sched/sch_generic.c:1083 qdisc_put net/sched/sch_generic.c:1109 [inline] dev_shutdown+0x34c/0x440 net/sched/sch_generic.c:1497 unregister_netdevice_many_notify+0xe0f/0x1ff0 net/core/dev.c:12154 unregister_netdevice_many net/core/dev.c:12229 [inline] unregister_netdevice_queue+0x33c/0x380 net/core/dev.c:12073 unregister_netdevice include/linux/netdevice.h:3385 [inline] __tun_detach+0xda4/0x1560 drivers/net/tun.c:621 tun_detach drivers/net/tun.c:637 [inline] tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3433 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d1/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:961 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa73dd8eba9 Code: Unable to access opcode bytes at 0x7fa73dd8eb7f. RSP: 002b:00007fa73e0ff578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007fa73dd8eba9 RDX: 00007fa73dd461c7 RSI: 0000000000000000 RDI: 000000000000000b RBP: 0000000000000003 R08: 00007fa73e0ffa27 R09: 000000000000000b R10: 00007fa73dfd5fa0 R11: 0000000000000246 R12: 00007fa73dfd627c R13: 00007fa73dfd6270 R14: 000000000000163d R15: 0000000000000003 ---------------- Code disassembly (best guess): 0: 24 20 and $0x20,%al 2: f6 44 24 21 02 testb $0x2,0x21(%rsp) 7: 74 0c je 0x15 9: 90 nop a: 0f 0b ud2 c: 48 f7 03 08 00 00 00 testq $0x8,(%rbx) 13: 74 64 je 0x79 15: bf 01 00 00 00 mov $0x1,%edi 1a: e8 ab 88 14 f6 call 0xf61488ca 1f: e8 76 e3 4b f6 call 0xf64be39a 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 5b ab ff ff call 0xffffab8a <-- trapping instruction 2f: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp) 36: 00 00 38: 9c pushf 39: 8f 44 24 40 pop 0x40(%rsp) 3d: 8b .byte 0x8b 3e: 44 rex.R 3f: 24 .byte 0x24