[ 65.627134][ T26] kauditd_printk_skb: 6 callbacks suppressed [ 65.627144][ T26] audit: type=1800 audit(1565698283.849:28): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.523382][ T26] audit: type=1800 audit(1565698284.739:29): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 66.543601][ T26] audit: type=1800 audit(1565698284.739:30): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.250' (ECDSA) to the list of known hosts. syzkaller login: [ 766.158617][ T9808] IPVS: ftp: loaded support on port[0] = 21 [ 766.160083][ T9809] IPVS: ftp: loaded support on port[0] = 21 [ 766.166347][ T9810] IPVS: ftp: loaded support on port[0] = 21 [ 766.178244][ T9807] IPVS: ftp: loaded support on port[0] = 21 [ 766.187196][ T9806] IPVS: ftp: loaded support on port[0] = 21 [ 766.187788][ T9811] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 922.265496][ T1058] INFO: task syz-executor603:9877 blocked for more than 143 seconds. [ 922.274054][ T1058] Not tainted 5.3.0-rc4 #126 [ 922.279767][ T1058] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 922.289006][ T1058] syz-executor603 D26704 9877 9809 0x80000000 [ 922.295477][ T1058] Call Trace: [ 922.298855][ T1058] __schedule+0x755/0x1580 [ 922.303493][ T1058] ? __sched_text_start+0x8/0x8 [ 922.308470][ T1058] schedule+0xa8/0x270 [ 922.312584][ T1058] schedule_timeout+0x717/0xc50 [ 922.317553][ T1058] ? percpu_ref_exit+0xd0/0xd0 [ 922.322445][ T1058] ? usleep_range+0x170/0x170 [ 922.327261][ T1058] ? __kasan_check_write+0x14/0x20 [ 922.332475][ T1058] ? lock_downgrade+0x920/0x920 [ 922.337444][ T1058] ? rwlock_bug.part.0+0x90/0x90 [ 922.342630][ T1058] ? wait_for_completion+0x9e/0x440 [ 922.348006][ T1058] ? trace_hardirqs_on+0x67/0x240 [ 922.353106][ T1058] ? __kasan_check_read+0x11/0x20 [ 922.358344][ T1058] wait_for_completion+0x29c/0x440 [ 922.363447][ T1058] ? wait_for_completion_interruptible+0x470/0x470 [ 922.370166][ T1058] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 922.375981][ T1058] ? wake_up_q+0xf0/0xf0 [ 922.380212][ T1058] ? kill_ioctx+0x1e4/0x2d0 [ 922.384703][ T1058] exit_aio+0x321/0x3a0 [ 922.389016][ T1058] ? ioctx_alloc+0x1dc0/0x1dc0 [ 922.393886][ T1058] ? mutex_unlock+0xd/0x10 [ 922.398334][ T1058] mmput+0xcf/0x4d0 [ 922.402345][ T1058] do_exit+0x84e/0x2e50 [ 922.406544][ T1058] ? mm_update_next_owner+0x640/0x640 [ 922.412187][ T1058] ? down_read_non_owner+0x450/0x450 [ 922.417551][ T1058] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 922.423890][ T1058] ? handle_mm_fault+0x1d3/0x6b0 [ 922.429137][ T1058] do_group_exit+0x135/0x360 [ 922.433730][ T1058] __x64_sys_exit_group+0x44/0x50 [ 922.439092][ T1058] do_syscall_64+0xfd/0x6a0 [ 922.443595][ T1058] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 922.449561][ T1058] RIP: 0033:0x440808 [ 922.453438][ T1058] Code: 69 67 75 72 65 64 20 74 6f 20 25 64 20 5b 2d 67 20 25 73 5d 20 2d 20 63 68 61 6e 67 69 6e 67 20 74 6f 20 31 2e 0a 00 00 00 00 <72> 73 79 73 6c 6f 67 64 3a 20 49 6e 76 61 6c 69 64 20 2d 74 20 25 [ 922.473415][ T1058] RSP: 002b:00007fffa55e8668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 922.481944][ T1058] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440808 [ 922.490109][ T1058] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 922.498106][ T1058] RBP: 00000000004c0f10 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 922.506573][ T1058] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 922.514560][ T1058] R13: 00000000006d3180 R14: 0000000000000000 R15: 0000000000000000 [ 922.522710][ T1058] INFO: task syz-executor603:10188 blocked for more than 143 seconds. [ 922.531077][ T1058] Not tainted 5.3.0-rc4 #126 [ 922.536210][ T1058] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 922.544949][ T1058] syz-executor603 D26696 10188 9811 0x80000000 [ 922.551530][ T1058] Call Trace: [ 922.554906][ T1058] __schedule+0x755/0x1580 [ 922.559494][ T1058] ? __sched_text_start+0x8/0x8 [ 922.564337][ T1058] schedule+0xa8/0x270 [ 922.568440][ T1058] schedule_timeout+0x717/0xc50 [ 922.573693][ T1058] ? percpu_ref_exit+0xd0/0xd0 [ 922.578678][ T1058] ? usleep_range+0x170/0x170 [ 922.583342][ T1058] ? __kasan_check_write+0x14/0x20 [ 922.588605][ T1058] ? lock_downgrade+0x920/0x920 [ 922.593538][ T1058] ? rwlock_bug.part.0+0x90/0x90 [ 922.598668][ T1058] ? wait_for_completion+0x9e/0x440 [ 922.604051][ T1058] ? trace_hardirqs_on+0x67/0x240 [ 922.609129][ T1058] ? __kasan_check_read+0x11/0x20 [ 922.614156][ T1058] wait_for_completion+0x29c/0x440 [ 922.619385][ T1058] ? wait_for_completion_interruptible+0x470/0x470 [ 922.626124][ T1058] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 922.631913][ T1058] ? wake_up_q+0xf0/0xf0 [ 922.636274][ T1058] ? kill_ioctx+0x1e4/0x2d0 [ 922.640757][ T1058] exit_aio+0x321/0x3a0 [ 922.645132][ T1058] ? ioctx_alloc+0x1dc0/0x1dc0 [ 922.650205][ T1058] ? mutex_unlock+0xd/0x10 [ 922.654613][ T1058] mmput+0xcf/0x4d0 [ 922.658455][ T1058] do_exit+0x84e/0x2e50 [ 922.662653][ T1058] ? mm_update_next_owner+0x640/0x640 [ 922.668059][ T1058] ? down_read_non_owner+0x450/0x450 [ 922.673343][ T1058] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 922.679766][ T1058] ? handle_mm_fault+0x1d3/0x6b0 [ 922.684755][ T1058] do_group_exit+0x135/0x360 [ 922.689493][ T1058] __x64_sys_exit_group+0x44/0x50 [ 922.694570][ T1058] do_syscall_64+0xfd/0x6a0 [ 922.699238][ T1058] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 922.705113][ T1058] RIP: 0033:0x440808 [ 922.709106][ T1058] Code: 69 67 75 72 65 64 20 74 6f 20 25 64 20 5b 2d 67 20 25 73 5d 20 2d 20 63 68 61 6e 67 69 6e 67 20 74 6f 20 31 2e 0a 00 00 00 00 <72> 73 79 73 6c 6f 67 64 3a 20 49 6e 76 61 6c 69 64 20 2d 74 20 25 [ 922.728915][ T1058] RSP: 002b:00007fffa55e8668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 922.737449][ T1058] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440808 [ 922.745449][ T1058] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 922.753511][ T1058] RBP: 00000000004c0f10 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 922.761529][ T1058] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 922.769517][ T1058] R13: 00000000006d3180 R14: 0000000000000000 R15: 0000000000000000 [ 922.777627][ T1058] INFO: lockdep is turned off. [ 922.782386][ T1058] NMI backtrace for cpu 1 [ 922.786747][ T1058] CPU: 1 PID: 1058 Comm: khungtaskd Not tainted 5.3.0-rc4 #126 [ 922.794303][ T1058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 922.804550][ T1058] Call Trace: [ 922.807886][ T1058] dump_stack+0x172/0x1f0 [ 922.812210][ T1058] nmi_cpu_backtrace.cold+0x70/0xb2 [ 922.817637][ T1058] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 922.824046][ T1058] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 922.829653][ T1058] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 922.835608][ T1058] arch_trigger_cpumask_backtrace+0x14/0x20 [ 922.841476][ T1058] watchdog+0x9d0/0xef0 [ 922.845624][ T1058] kthread+0x361/0x430 [ 922.849675][ T1058] ? reset_hung_task_detector+0x30/0x30 [ 922.855320][ T1058] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 922.861550][ T1058] ret_from_fork+0x24/0x30 [ 922.866047][ T1058] Sending NMI from CPU 1 to CPUs 0: [ 922.871298][ C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 [ 922.872254][ T1058] Kernel panic - not syncing: hung_task: blocked tasks [ 922.886728][ T1058] CPU: 1 PID: 1058 Comm: khungtaskd Not tainted 5.3.0-rc4 #126 [ 922.894313][ T1058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 922.904576][ T1058] Call Trace: [ 922.907853][ T1058] dump_stack+0x172/0x1f0 [ 922.912204][ T1058] panic+0x2dc/0x755 [ 922.916079][ T1058] ? add_taint.cold+0x16/0x16 [ 922.920730][ T1058] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 922.926522][ T1058] ? printk_safe_flush+0xf2/0x140 [ 922.931641][ T1058] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 922.937942][ T1058] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 922.944145][ T1058] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 922.950279][ T1058] watchdog+0x9e1/0xef0 [ 922.954430][ T1058] kthread+0x361/0x430 [ 922.958482][ T1058] ? reset_hung_task_detector+0x30/0x30 [ 922.964011][ T1058] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 922.970316][ T1058] ret_from_fork+0x24/0x30 [ 922.976018][ T1058] Kernel Offset: disabled [ 922.980338][ T1058] Rebooting in 86400 seconds..