Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 156.273040] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [aoe_tx0:3072] [ 156.280378] Modules linked in: [ 156.283679] irq event stamp: 18763 [ 156.287209] hardirqs last enabled at (18762): [] restore_regs_and_return_to_kernel+0x0/0x2a [ 156.297375] hardirqs last disabled at (18763): [] apic_timer_interrupt+0x8e/0xa0 [ 156.306508] softirqs last enabled at (748): [] __dev_queue_xmit+0xc96/0x2480 [ 156.315761] softirqs last disabled at (758): [] __dev_queue_xmit+0x1ac/0x2480 [ 156.325282] CPU: 0 PID: 3072 Comm: aoe_tx0 Not tainted 4.14.249-syzkaller #0 [ 156.332536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 156.341885] task: ffff8880ab5ea540 task.stack: ffff8880ab4b0000 [ 156.347930] RIP: 0010:fq_codel_dequeue+0xb6/0x2c10 [ 156.352835] RSP: 0018:ffff8880ab4b7b28 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff10 [ 156.360522] RAX: 0000000000000000 RBX: ffff8880b2d906b8 RCX: ffff8880b2d906a8 [ 156.367773] RDX: 0000000000000000 RSI: ffff8880b2d906b8 RDI: ffff888092e08658 [ 156.375029] RBP: ffff8880b2d906c0 R08: 0000000000000001 R09: 000000000004850f [ 156.382366] R10: ffff8880ab5eae18 R11: ffff8880ab5ea540 R12: ffff8880b2d90480 [ 156.389624] R13: dffffc0000000000 R14: ffff8880b2d90480 R15: ffff888092e08650 [ 156.397657] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 156.405860] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 156.412692] CR2: 00007fff88df2888 CR3: 00000000b30c1000 CR4: 00000000003406f0 [ 156.419969] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 156.427324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 156.434591] Call Trace: [ 156.437167] ? trace_hardirqs_on+0x10/0x10 [ 156.441381] ? check_preemption_disabled+0x35/0x240 [ 156.446377] ? kvm_clock_read+0x1f/0x30 [ 156.450341] ? qdisc_tree_reduce_backlog+0x24/0x4d0 [ 156.455337] ? fq_codel_enqueue+0x1f8/0xfc0 [ 156.459652] __qdisc_run+0x322/0xe00 [ 156.463382] __dev_queue_xmit+0x13ac/0x2480 [ 156.467683] ? finish_task_switch+0x178/0x610 [ 156.472159] ? skb_dequeue+0x125/0x180 [ 156.476036] ? netdev_pick_tx+0x2e0/0x2e0 [ 156.480162] ? lock_downgrade+0x740/0x740 [ 156.484293] ? _raw_spin_unlock_irq+0x24/0x80 [ 156.488777] ? aoe_exit+0x70/0x70 [ 156.492226] ? aoe_exit+0x70/0x70 [ 156.495666] tx+0x68/0xa0 [ 156.498403] kthread+0x1b9/0x350 [ 156.501806] ? ktcomplete+0x2d0/0x2d0 [ 156.505597] ? wake_up_q+0xd0/0xd0 [ 156.509173] ? ktcomplete+0x2d0/0x2d0 [ 156.512977] kthread+0x30d/0x420 [ 156.516325] ? kthread_create_on_node+0xd0/0xd0 [ 156.520988] ret_from_fork+0x24/0x30 [ 156.524752] Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 3f 23 00 00 48 8b 04 24 4c 8b 38 49 8d 47 10 48 89 84 24 80 00 00 00 48 c1 e8 03 42 0f b6 04 28 <84> c0 74 08 3c 03 0f 8e 05 23 00 00 41 8b 5f 10 85 db 0f 8e 98 [ 156.544028] Kernel panic - not syncing: softlockup: hung tasks [ 156.550083] CPU: 0 PID: 3072 Comm: aoe_tx0 Tainted: G L 4.14.249-syzkaller #0 [ 156.558494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 156.567832] Call Trace: [ 156.570397] [ 156.572533] dump_stack+0x1b2/0x281 [ 156.576161] panic+0x1f9/0x42d [ 156.579425] ? add_taint.cold+0x16/0x16 [ 156.584180] watchdog_timer_fn.cold+0x16/0x25 [ 156.588658] __hrtimer_run_queues+0x30b/0xc80 [ 156.593157] ? watchdog+0x50/0x50 [ 156.596592] ? retrigger_next_event+0x310/0x310 [ 156.601354] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 156.606794] hrtimer_interrupt+0x1e6/0x5e0 [ 156.611020] smp_apic_timer_interrupt+0x117/0x5e0 [ 156.615935] apic_timer_interrupt+0x93/0xa0 [ 156.620240] [ 156.622461] RIP: 0010:fq_codel_dequeue+0xb6/0x2c10 [ 156.627366] RSP: 0018:ffff8880ab4b7b28 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff10 [ 156.635575] RAX: 0000000000000000 RBX: ffff8880b2d906b8 RCX: ffff8880b2d906a8 [ 156.642838] RDX: 0000000000000000 RSI: ffff8880b2d906b8 RDI: ffff888092e08658 [ 156.650107] RBP: ffff8880b2d906c0 R08: 0000000000000001 R09: 000000000004850f [ 156.657456] R10: ffff8880ab5eae18 R11: ffff8880ab5ea540 R12: ffff8880b2d90480 [ 156.664708] R13: dffffc0000000000 R14: ffff8880b2d90480 R15: ffff888092e08650 [ 156.671976] ? fq_codel_dequeue+0x87/0x2c10 [ 156.676281] ? trace_hardirqs_on+0x10/0x10 [ 156.680688] ? check_preemption_disabled+0x35/0x240 [ 156.685783] ? kvm_clock_read+0x1f/0x30 [ 156.689755] ? qdisc_tree_reduce_backlog+0x24/0x4d0 [ 156.695020] ? fq_codel_enqueue+0x1f8/0xfc0 [ 156.699565] __qdisc_run+0x322/0xe00 [ 156.703267] __dev_queue_xmit+0x13ac/0x2480 [ 156.707576] ? finish_task_switch+0x178/0x610 [ 156.712173] ? skb_dequeue+0x125/0x180 [ 156.716112] ? netdev_pick_tx+0x2e0/0x2e0 [ 156.720249] ? lock_downgrade+0x740/0x740 [ 156.724385] ? _raw_spin_unlock_irq+0x24/0x80 [ 156.728861] ? aoe_exit+0x70/0x70 [ 156.732297] ? aoe_exit+0x70/0x70 [ 156.735736] tx+0x68/0xa0 [ 156.738488] kthread+0x1b9/0x350 [ 156.741941] ? ktcomplete+0x2d0/0x2d0 [ 156.745749] ? wake_up_q+0xd0/0xd0 [ 156.749270] ? ktcomplete+0x2d0/0x2d0 [ 156.753079] kthread+0x30d/0x420 [ 156.756449] ? kthread_create_on_node+0xd0/0xd0 [ 156.761100] ret_from_fork+0x24/0x30 [ 156.765191] Kernel Offset: disabled [ 156.768852] Rebooting in 86400 seconds..