[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. syzkaller login: [ 806.389284][ T8484] IPVS: ftp: loaded support on port[0] = 21 [ 806.390341][ T8485] IPVS: ftp: loaded support on port[0] = 21 [ 806.401482][ T8487] IPVS: ftp: loaded support on port[0] = 21 [ 806.404524][ T8486] IPVS: ftp: loaded support on port[0] = 21 [ 806.409587][ T8481] IPVS: ftp: loaded support on port[0] = 21 [ 806.416520][ T8488] IPVS: ftp: loaded support on port[0] = 21 [ 806.694218][ T24] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.706545][ T24] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 806.722959][ T159] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.731047][ T159] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 806.753730][ T19] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 806.762050][ T159] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.769930][ T159] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 806.794668][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 806.809270][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 806.824776][ T24] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.835628][ T159] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.850334][ T24] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 806.859003][ T8651] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 806.867533][ T159] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 806.875027][ T8651] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 806.915340][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 806.930574][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 806.939073][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 806.981773][ C1] hrtimer: interrupt took 29650 ns [ 807.053020][ T8662] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.061205][ T8662] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 807.070147][ T8643] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.083451][ T8643] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 807.094284][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 807.102553][ T8662] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.132800][ T8651] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.156342][ T8651] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 807.168284][ T8662] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 807.182896][ T24] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.234151][ T24] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 807.308667][ T8651] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 807.320328][ T8651] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 821.394255][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 821.415261][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 821.459140][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 821.484651][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 821.514257][ T8592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 926.721974][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 926.729776][ C1] rcu: 1-....: (10499 ticks this GP) idle=cc2/1/0x4000000000000000 softirq=9825/9827 fqs=4312 [ 926.740846][ C1] (t=10500 jiffies g=8233 q=641) [ 926.746085][ C1] NMI backtrace for cpu 1 [ 926.750620][ C1] CPU: 1 PID: 8698 Comm: syz-executor392 Not tainted 5.11.0-rc2-syzkaller #0 [ 926.759498][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 926.770411][ C1] Call Trace: [ 926.773674][ C1] [ 926.776599][ C1] dump_stack+0x107/0x163 [ 926.781031][ C1] nmi_cpu_backtrace.cold+0x44/0xd7 [ 926.786345][ C1] ? lapic_can_unplug_cpu+0x80/0x80 [ 926.791641][ C1] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 926.797710][ C1] rcu_dump_cpu_stacks+0x1e3/0x21e [ 926.802811][ C1] rcu_sched_clock_irq.cold+0x472/0xec3 [ 926.808348][ C1] ? rcutree_dead_cpu+0x50/0x50 [ 926.813198][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 926.818060][ C1] ? __raise_softirq_irqoff+0x93/0x1d0 [ 926.823504][ C1] update_process_times+0x16d/0x200 [ 926.828770][ C1] tick_sched_handle+0x9b/0x180 [ 926.833604][ C1] tick_sched_timer+0x1b0/0x2d0 [ 926.838524][ C1] ? get_cpu_iowait_time_us+0x3f0/0x3f0 [ 926.844052][ C1] __hrtimer_run_queues+0x1ce/0xea0 [ 926.849238][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 926.855200][ C1] ? ktime_get_update_offsets_now+0x249/0x320 [ 926.861267][ C1] hrtimer_interrupt+0x334/0x940 [ 926.866282][ C1] __sysvec_apic_timer_interrupt+0x146/0x540 [ 926.872268][ C1] sysvec_apic_timer_interrupt+0x48/0x100 [ 926.877995][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 926.883965][ C1] RIP: 0010:__orc_find+0x6f/0xf0 [ 926.888890][ C1] Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 [ 926.908911][ C1] RSP: 0018:ffffc90000db0628 EFLAGS: 00000212 [ 926.915059][ C1] RAX: 1ffffffff1abb016 RBX: ffffffff8d5d80b0 RCX: ffffffff89000c01 [ 926.923102][ C1] RDX: 0000000000000000 RSI: ffffffff8df8872e RDI: ffffffff8d5d8070 [ 926.931320][ C1] RBP: ffffffff8d5d8070 R08: ffffffff8df887f4 R09: ffffffff8df8872e [ 926.939458][ C1] R10: 0000000000082083 R11: 00000000001945a1 R12: ffffffff8d5d80f0 [ 926.947513][ C1] R13: ffffffff8d5d8070 R14: ffffffff8d5d8070 R15: dffffc0000000000 [ 926.955485][ C1] ? asm_sysvec_apic_timer_interrupt+0x11/0x20 [ 926.961740][ C1] unwind_next_frame+0x342/0x1f90 [ 926.966749][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 926.972911][ C1] ? deref_stack_reg+0x150/0x150 [ 926.978371][ C1] ? __iterate_interfaces+0x1e5/0x520 [ 926.983742][ C1] ? create_prof_cpu_mask+0x20/0x20 [ 926.988922][ C1] arch_stack_walk+0x7d/0xe0 [ 926.993497][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 926.999736][ C1] stack_trace_save+0x8c/0xc0 [ 927.004409][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 927.010196][ C1] ? find_held_lock+0x2d/0x110 [ 927.014959][ C1] ? mark_lock+0xf7/0x1730 [ 927.019616][ C1] kasan_save_stack+0x1b/0x40 [ 927.024271][ C1] ? kasan_save_stack+0x1b/0x40 [ 927.029289][ C1] ? ____kasan_kmalloc.constprop.0+0x82/0xa0 [ 927.035260][ C1] ? __kmalloc_node_track_caller+0x1e0/0x3e0 [ 927.041307][ C1] ? __alloc_skb+0xae/0x5a0 [ 927.045905][ C1] ? skb_copy+0x137/0x2f0 [ 927.050213][ C1] ? mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 [ 927.057132][ C1] ? mac80211_hwsim_tx_frame+0x14f/0x1e0 [ 927.062762][ C1] ? mac80211_hwsim_beacon_tx+0x4ba/0x910 [ 927.068484][ C1] ? __iterate_interfaces+0x1e5/0x520 [ 927.074037][ C1] ? ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 [ 927.081752][ C1] ? mac80211_hwsim_beacon+0xd5/0x1a0 [ 927.087194][ C1] ? __hrtimer_run_queues+0x693/0xea0 [ 927.092547][ C1] ? hrtimer_run_softirq+0x17b/0x360 [ 927.097905][ C1] ? __do_softirq+0x2a5/0x9f7 [ 927.102693][ C1] ? asm_call_irq_on_stack+0xf/0x20 [ 927.108658][ C1] ? do_softirq_own_stack+0xaa/0xd0 [ 927.113960][ C1] ? irq_exit_rcu+0x134/0x200 [ 927.118634][ C1] ? sysvec_apic_timer_interrupt+0x4d/0x100 [ 927.124507][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 927.130659][ C1] ? kvm_sched_clock_read+0x14/0x40 [ 927.135842][ C1] ? sched_clock+0x2a/0x40 [ 927.140245][ C1] ? sched_clock_cpu+0x18/0x1f0 [ 927.145078][ C1] ? mark_held_locks+0x9f/0xe0 [ 927.149839][ C1] ? irqtime_account_irq+0x187/0x2d0 [ 927.155113][ C1] ? asm_sysvec_irq_work+0x12/0x20 [ 927.160380][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 927.165556][ C1] ? asm_sysvec_irq_work+0x12/0x20 [ 927.170655][ C1] ? unpoison_range+0x3a/0x60 [ 927.175318][ C1] ____kasan_kmalloc.constprop.0+0x82/0xa0 [ 927.181113][ C1] __kmalloc_node_track_caller+0x1e0/0x3e0 [ 927.186985][ C1] ? skb_copy+0x137/0x2f0 [ 927.191312][ C1] __alloc_skb+0xae/0x5a0 [ 927.195628][ C1] skb_copy+0x137/0x2f0 [ 927.199855][ C1] mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 [ 927.206522][ C1] ? mac80211_hwsim_add_chanctx+0x220/0x220 [ 927.212407][ C1] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 927.218645][ C1] ? mac80211_hwsim_monitor_rx+0x1c2/0x840 [ 927.224456][ C1] mac80211_hwsim_tx_frame+0x14f/0x1e0 [ 927.229988][ C1] mac80211_hwsim_beacon_tx+0x4ba/0x910 [ 927.236417][ C1] __iterate_interfaces+0x1e5/0x520 [ 927.241916][ C1] ? mac80211_hwsim_tx_frame+0x1e0/0x1e0 [ 927.247546][ C1] ? mac80211_hwsim_tx_frame+0x1e0/0x1e0 [ 927.253181][ C1] ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 [ 927.260215][ C1] ? mac80211_hwsim_addr_match+0x180/0x180 [ 927.266037][ C1] mac80211_hwsim_beacon+0xd5/0x1a0 [ 927.271235][ C1] ? mac80211_hwsim_addr_match+0x180/0x180 [ 927.277426][ C1] __hrtimer_run_queues+0x693/0xea0 [ 927.282632][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 927.288614][ C1] ? ktime_get_update_offsets_now+0x249/0x320 [ 927.294680][ C1] hrtimer_run_softirq+0x17b/0x360 [ 927.299800][ C1] __do_softirq+0x2a5/0x9f7 [ 927.304388][ C1] asm_call_irq_on_stack+0xf/0x20 [ 927.309496][ C1] [ 927.312413][ C1] do_softirq_own_stack+0xaa/0xd0 [ 927.317435][ C1] irq_exit_rcu+0x134/0x200 [ 927.321929][ C1] sysvec_apic_timer_interrupt+0x4d/0x100 [ 927.327646][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 927.333618][ C1] RIP: 0010:__rcu_read_unlock+0x1dc/0x500 [ 927.339335][ C1] Code: 27 a2 7e 81 e2 00 00 0f 00 0f 85 7e 02 00 00 4d 85 ed 74 62 84 c0 74 5e bf 09 00 00 00 e8 1c 8c e4 ff e8 37 7d 18 00 41 54 9d 9c fe ff ff 0f 0b 5b 5d 41 5c 41 5d 41 5e c3 e8 ff 40 55 00 e9 [ 927.359114][ C1] RSP: 0018:ffffc900023c7748 EFLAGS: 00000246 [ 927.365177][ C1] RAX: 000000000032a451 RBX: ffff8880b9f35a80 RCX: ffffffff81580a37 [ 927.373143][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 927.381113][ C1] RBP: ffffffff8b36b900 R08: 0000000000000001 R09: ffffffff8ebdb7b7 [ 927.389078][ C1] R10: fffffbfff1d7b6f6 R11: 0000000000000000 R12: 0000000000000246 [ 927.397049][ C1] R13: 0000000000000200 R14: 0000000000000001 R15: 000000000040f000 [ 927.405021][ C1] ? mark_lock+0xf7/0x1730 [ 927.409447][ C1] unlock_page_memcg+0x141/0x270 [ 927.414388][ C1] unmap_page_range+0xe30/0x2640 [ 927.419331][ C1] ? vm_normal_page_pmd+0x510/0x510 [ 927.424536][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 927.429392][ C1] ? uprobe_munmap+0x1c/0x560 [ 927.434075][ C1] unmap_single_vma+0x198/0x300 [ 927.438912][ C1] unmap_vmas+0x168/0x2e0 [ 927.443219][ C1] ? zap_vma_ptes+0x100/0x100 [ 927.447887][ C1] exit_mmap+0x2b1/0x5a0 [ 927.452108][ C1] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 927.458079][ C1] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 927.464297][ C1] ? __khugepaged_exit+0x2d9/0x470 [ 927.469492][ C1] __mmput+0x122/0x470 [ 927.473543][ C1] mmput+0x53/0x60 [ 927.477255][ C1] do_exit+0xb6a/0x2ae0 [ 927.481406][ C1] ? find_held_lock+0x2d/0x110 [ 927.486147][ C1] ? mm_update_next_owner+0x7a0/0x7a0 [ 927.491497][ C1] ? get_signal+0x2f6/0x2010 [ 927.496065][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 927.500900][ C1] do_group_exit+0x125/0x310 [ 927.505469][ C1] get_signal+0x3ec/0x2010 [ 927.509870][ C1] arch_do_signal_or_restart+0x2a8/0x1eb0 [ 927.515570][ C1] ? __perf_event_init_context+0x310/0x310 [ 927.521358][ C1] ? do_raw_spin_unlock+0x171/0x230 [ 927.526534][ C1] ? __perf_event_init_context+0x310/0x310 [ 927.532321][ C1] ? copy_siginfo_to_user32+0xa0/0xa0 [ 927.537681][ C1] ? f_setown+0x230/0x230 [ 927.541990][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 927.548150][ C1] ? trace_hardirqs_on+0x38/0x1c0 [ 927.553155][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 927.559382][ C1] ? tomoyo_file_fcntl+0x6e/0xc0 [ 927.564303][ C1] exit_to_user_mode_prepare+0x148/0x250 [ 927.569916][ C1] syscall_exit_to_user_mode+0x19/0x50 [ 927.575541][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 927.581447][ C1] RIP: 0033:0x4429e9 [ 927.585319][ C1] Code: Unable to access opcode bytes at RIP 0x4429bf. [ 927.592158][ C1] RSP: 002b:00007ffd2afe2538 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 [ 927.600708][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000004429e9 [ 927.608945][ C1] RDX: 0000000000042000 RSI: 0000000000000004 RDI: 0000000000000003 [ 927.616895][ C1] RBP: 0000000000000000 R08: 0000002100000000 R09: 0000002100000000 [ 927.624844][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 927.632812][ C1] R13: 00000000006d3dc8 R14: 00000000006d4440 R15: 0000000000000004