[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts. syzkaller login: [ 769.563159][ T8467] IPVS: ftp: loaded support on port[0] = 21 [ 769.566736][ T8462] IPVS: ftp: loaded support on port[0] = 21 [ 769.571038][ T8465] IPVS: ftp: loaded support on port[0] = 21 [ 769.579046][ T8460] IPVS: ftp: loaded support on port[0] = 21 [ 769.594718][ T8464] IPVS: ftp: loaded support on port[0] = 21 [ 769.604076][ T8466] IPVS: ftp: loaded support on port[0] = 21 [ 769.820467][ T8517] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 769.833814][ T8517] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 769.847955][ T166] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 769.863132][ T3182] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 769.865413][ T166] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 769.922076][ T8517] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 769.950120][ T8619] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 769.952980][ T8517] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 769.958127][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 769.978973][ T8619] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 769.994838][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 770.003197][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 770.028468][ T97] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.036685][ T8619] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.044673][ T8619] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.057821][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 770.066226][ T97] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.073885][ T166] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.085205][ T166] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.106682][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 770.130678][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 770.141517][ T97] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.153542][ T97] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.171602][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program executing program executing program [ 770.194522][ T8619] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.222903][ T8619] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.225179][ T97] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.245109][ C0] hrtimer: interrupt took 32020 ns [ 770.660040][ T97] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.679948][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 770.700916][ T8614] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.723054][ T8614] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 770.738522][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 770.790177][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 770.813933][ T8619] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 770.829101][ T8619] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 790.402112][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 985.445509][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 985.453338][ C0] rcu: 0-....: (9015 ticks this GP) idle=f1a/1/0x4000000000000000 softirq=10983/10983 fqs=4676 [ 985.464139][ C0] (t=10500 jiffies g=9661 q=585) [ 985.469341][ C0] NMI backtrace for cpu 0 [ 985.473868][ C0] CPU: 0 PID: 9407 Comm: syz-executor645 Not tainted 5.10.0-syzkaller #0 [ 985.483024][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 985.493113][ C0] Call Trace: [ 985.496388][ C0] [ 985.499259][ C0] dump_stack+0x107/0x163 [ 985.503663][ C0] nmi_cpu_backtrace.cold+0x44/0xd7 [ 985.509027][ C0] ? lapic_can_unplug_cpu+0x80/0x80 [ 985.514216][ C0] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 985.520183][ C0] rcu_dump_cpu_stacks+0x1e3/0x21e [ 985.525282][ C0] rcu_sched_clock_irq.cold+0x472/0xee8 [ 985.530818][ C0] ? rcutree_dead_cpu+0x40/0x40 [ 985.535661][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 985.540539][ C0] ? __raise_softirq_irqoff+0x93/0x1d0 [ 985.545991][ C0] update_process_times+0x77/0xd0 [ 985.551007][ C0] tick_sched_handle+0x9b/0x180 [ 985.556117][ C0] tick_sched_timer+0x1d1/0x2a0 [ 985.560965][ C0] ? can_stop_idle_tick+0x290/0x290 [ 985.566157][ C0] __hrtimer_run_queues+0x1ce/0xea0 [ 985.571348][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 985.577315][ C0] ? ktime_get_update_offsets_now+0x249/0x320 [ 985.583495][ C0] hrtimer_interrupt+0x334/0x940 [ 985.588540][ C0] __sysvec_apic_timer_interrupt+0x146/0x540 [ 985.594960][ C0] sysvec_apic_timer_interrupt+0x48/0x100 [ 985.600877][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 985.606846][ C0] RIP: 0010:unwind_next_frame+0x190/0x1f90 [ 985.612895][ C0] Code: 15 00 00 41 f6 85 88 00 00 00 03 0f 85 71 02 00 00 4d 8d 6f 35 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 <4c> 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 39 0a 00 00 4c 89 e1 41 [ 985.632717][ C0] RSP: 0018:ffffc90000007670 EFLAGS: 00000213 [ 985.638989][ C0] RAX: 0000000000000000 RBX: 1ffff92000000ed6 RCX: 1ffffffff1de7b24 [ 985.647447][ C0] RDX: 1ffff92000000eef RSI: 0000000000000000 RDI: 0000000000000001 [ 985.655437][ C0] RBP: 0000000000000002 R08: ffffffff8d6db4aa R09: 0000000000000001 [ 985.663624][ C0] R10: 0000000000082081 R11: 0000000000000001 R12: ffffc90000007790 [ 985.671575][ C0] R13: ffffc9000000777d R14: ffffc90000007798 R15: ffffc90000007748 [ 985.679800][ C0] ? __alloc_skb+0x71/0x550 [ 985.684523][ C0] ? get_stack_info_noinstr+0x39/0x110 [ 985.690073][ C0] ? deref_stack_reg+0x150/0x150 [ 985.695288][ C0] ? __unwind_start+0x51b/0x800 [ 985.700256][ C0] ? create_prof_cpu_mask+0x20/0x20 [ 985.705443][ C0] arch_stack_walk+0x7d/0xe0 [ 985.710024][ C0] ? __alloc_skb+0x71/0x550 [ 985.714602][ C0] stack_trace_save+0x8c/0xc0 [ 985.719264][ C0] ? stack_trace_consume_entry+0x160/0x160 [ 985.725061][ C0] ? mark_lock+0xf7/0x1730 [ 985.729505][ C0] kasan_save_stack+0x1b/0x40 [ 985.734167][ C0] ? kasan_save_stack+0x1b/0x40 [ 985.739001][ C0] ? __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 985.744789][ C0] ? kmem_cache_alloc_node+0x1e0/0x470 [ 985.750232][ C0] ? __alloc_skb+0x71/0x550 [ 985.754730][ C0] ? kill_fasync+0x2f0/0x460 [ 985.759308][ C0] ? kvm_sched_clock_read+0x14/0x40 [ 985.764522][ C0] ? sched_clock+0x2a/0x40 [ 985.768920][ C0] ? sched_clock_cpu+0x18/0x1f0 [ 985.773758][ C0] ? mark_held_locks+0x9f/0xe0 [ 985.778509][ C0] ? irqtime_account_irq+0x17e/0x2d0 [ 985.783778][ C0] ? asm_sysvec_irq_work+0x12/0x20 [ 985.788878][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 985.794058][ C0] ? asm_sysvec_irq_work+0x12/0x20 [ 985.799154][ C0] ? __alloc_skb+0x71/0x550 [ 985.803648][ C0] ? mark_lock+0xf7/0x1730 [ 985.808050][ C0] ? __slab_alloc.constprop.0+0x55/0xe0 [ 985.813584][ C0] ? kasan_unpoison_shadow+0x33/0x40 [ 985.818889][ C0] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 985.824595][ C0] kmem_cache_alloc_node+0x1e0/0x470 [ 985.829962][ C0] __alloc_skb+0x71/0x550 [ 985.834276][ C0] skb_copy+0x137/0x2f0 [ 985.838429][ C0] mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 [ 985.845093][ C0] ? mac80211_hwsim_add_chanctx+0x220/0x220 [ 985.851147][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 985.856019][ C0] ? mac80211_hwsim_monitor_rx+0x1c2/0x840 [ 985.861903][ C0] mac80211_hwsim_tx_frame+0x14f/0x1e0 [ 985.867388][ C0] mac80211_hwsim_beacon_tx+0x4ba/0x910 [ 985.873702][ C0] __iterate_interfaces+0x1e5/0x520 [ 985.878972][ C0] ? mac80211_hwsim_tx_frame+0x1e0/0x1e0 [ 985.884587][ C0] ? mac80211_hwsim_tx_frame+0x1e0/0x1e0 [ 985.890419][ C0] ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 [ 985.897462][ C0] ? mac80211_hwsim_addr_match+0x180/0x180 [ 985.903301][ C0] mac80211_hwsim_beacon+0xd5/0x1a0 [ 985.908484][ C0] ? mac80211_hwsim_addr_match+0x180/0x180 [ 985.915154][ C0] __hrtimer_run_queues+0x693/0xea0 [ 985.920797][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 985.926911][ C0] ? ktime_get_update_offsets_now+0x249/0x320 [ 985.933397][ C0] hrtimer_run_softirq+0x17b/0x360 [ 985.938520][ C0] __do_softirq+0x2a0/0x9f6 [ 985.943216][ C0] asm_call_irq_on_stack+0xf/0x20 [ 985.948371][ C0] [ 985.951308][ C0] do_softirq_own_stack+0xaa/0xd0 [ 985.956583][ C0] irq_exit_rcu+0x132/0x200 [ 985.961190][ C0] sysvec_apic_timer_interrupt+0x4d/0x100 [ 985.966921][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 985.973000][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x20 [ 985.979909][ C0] Code: 84 00 00 00 00 00 48 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 ae fe ff ff 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0c 24 <48> 89 f2 48 89 fe bf 07 00 00 00 e9 8c fe ff ff 66 90 66 2e 0f 1f [ 986.001392][ C0] RSP: 0018:ffffc90001b579a8 EFLAGS: 00000256 [ 986.007636][ C0] RAX: 0000000000000005 RBX: 0000000000000000 RCX: ffffffff8130c470 [ 986.015679][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 986.023662][ C0] RBP: ffff8880a9005e80 R08: 0000000000000001 R09: 0000000000000001 [ 986.031685][ C0] R10: ffff8880a9005e80 R11: 0000000000000000 R12: 0000000029005e80 [ 986.039664][ C0] R13: ffff8880101c3640 R14: ffff888029005e80 R15: 0000000000000246 [ 986.047655][ C0] ? __phys_addr+0x90/0x110 [ 986.052417][ C0] __phys_addr+0x90/0x110 [ 986.056844][ C0] ? kmem_cache_free+0x82/0x350 [ 986.061690][ C0] __kasan_slab_free+0x19/0x140 [ 986.066537][ C0] slab_free_freelist_hook+0x5d/0x150 [ 986.072041][ C0] ? finish_task_switch+0x4ab/0x780 [ 986.077500][ C0] kmem_cache_free+0x82/0x350 [ 986.082183][ C0] finish_task_switch+0x4ab/0x780 [ 986.087251][ C0] ? __switch_to+0x57c/0x1050 [ 986.091933][ C0] __schedule+0x89b/0x2130 [ 986.096352][ C0] ? io_schedule_timeout+0x140/0x140 [ 986.101903][ C0] preempt_schedule_irq+0x4e/0x90 [ 986.107026][ C0] irqentry_exit+0x7a/0xa0 [ 986.111723][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 986.117686][ C0] RIP: 0010:lock_release+0x3d5/0x710 [ 986.122951][ C0] Code: 15 02 00 00 48 c7 c7 40 5f 4b 89 e8 95 4d 8f 07 b8 ff ff ff ff 65 0f c1 05 28 d8 ab 7e 83 f8 01 0f 85 67 01 00 00 ff 34 24 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c5 48 c7 45 00 00 00 00 00 c7 [ 986.142659][ C0] RSP: 0018:ffffc90001b57c80 EFLAGS: 00000246 [ 986.148709][ C0] RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffc90001b57cd0 [ 986.156665][ C0] RDX: 1ffff110044efaf9 RSI: 0000000000000000 RDI: 0000000000000000 [ 986.164730][ C0] RBP: 1ffff9200036af92 R08: 0000000000000000 R09: 0000000000000000 [ 986.172894][ C0] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 986.180869][ C0] R13: 0000000000000001 R14: ffff88802277d7d0 R15: ffff88802277cec0 [ 986.189043][ C0] ? perf_fasync+0x88/0xb0 [ 986.193687][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 986.198630][ C0] ? fasync_insert_entry+0x22b/0x2b0 [ 986.203903][ C0] ? do_raw_spin_lock+0x120/0x2b0 [ 986.208915][ C0] up_write+0x78/0x560 [ 986.212965][ C0] ? do_raw_spin_unlock+0x171/0x230 [ 986.218143][ C0] ? downgrade_write+0x3a0/0x3a0 [ 986.223061][ C0] ? fasync_insert_entry+0x22b/0x2b0 [ 986.228480][ C0] perf_fasync+0x88/0xb0 [ 986.232712][ C0] ? __perf_event_init_context+0x310/0x310 [ 986.238850][ C0] do_fcntl+0x667/0x1070 [ 986.243346][ C0] ? f_setown+0x230/0x230 [ 986.247750][ C0] ? hrtimer_interrupt+0x6f4/0x940 [ 986.253374][ C0] ? kvm_sched_clock_read+0x14/0x40 [ 986.258847][ C0] ? sched_clock+0x2a/0x40 [ 986.263301][ C0] ? tomoyo_file_fcntl+0x6e/0xc0 [ 986.268792][ C0] ? bpf_lsm_file_fcntl+0x5/0x10 [ 986.274023][ C0] __x64_sys_fcntl+0x165/0x1e0 [ 986.279104][ C0] do_syscall_64+0x2d/0x70 [ 986.283505][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 986.289376][ C0] RIP: 0033:0x4429f9 [ 986.293362][ C0] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 986.313076][ C0] RSP: 002b:00007ffe5a3291f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 [ 986.321470][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004429f9 [ 986.329423][ C0] RDX: 0000000000042000 RSI: 0000000000000004 RDI: 0000000000000003 [ 986.337376][ C0] RBP: 0000000000000000 R08: 0000002100000000 R09: 0000002100000000 [ 986.345327][ C0] R10: 0000002100000000 R11: 0000000000000246 R12: 00000000000d67d1 [ 986.353280][ C0] R13: 00000000006d3dc8 R14: 00000000006d4440 R15: 0000000000000004 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program