[ 94.889740][ T27] audit: type=1800 audit(1582213084.310:27): pid=9614 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[ 94.920121][ T27] audit: type=1800 audit(1582213084.310:28): pid=9614 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 95.816363][ T27] audit: type=1800 audit(1582213085.310:29): pid=9614 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
[ 95.836614][ T27] audit: type=1800 audit(1582213085.320:30): pid=9614 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 '10.128.0.94' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 560.206947][ T951] INFO: task syz-executor280:9768 blocked for more than 143 seconds.
[ 560.215230][ T951] Not tainted 5.6.0-rc1-syzkaller #0
[ 560.221314][ T951] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 560.230120][ T951] syz-executor280 D27912 9768 9766 0x00000000
[ 560.236559][ T951] Call Trace:
[ 560.240029][ T951] __schedule+0x934/0x1f90
[ 560.244492][ T951] ? __sched_text_start+0x8/0x8
[ 560.249595][ T951] ? lockdep_hardirqs_on+0x421/0x5e0
[ 560.254991][ T951] ? __lock_sock+0x160/0x290
[ 560.259697][ T951] ? trace_hardirqs_on+0x67/0x240
[ 560.264731][ T951] schedule+0xdc/0x2b0
[ 560.269025][ T951] __lock_sock+0x165/0x290
[ 560.273486][ T951] ? __sk_dst_check+0x2e0/0x2e0
[ 560.279136][ T951] ? finish_wait+0x260/0x260
[ 560.283740][ T951] lock_sock_nested+0xfe/0x120
[ 560.288692][ T951] virtio_transport_release+0xc4/0xd60
[ 560.294254][ T951] ? virtio_transport_close_timeout+0x220/0x220
[ 560.300830][ T951] ? rcu_read_lock_held+0x9c/0xb0
[ 560.305944][ T951] ? __kasan_check_read+0x11/0x20
[ 560.311161][ T951] vsock_assign_transport+0xf3/0x3b0
[ 560.316471][ T951] vsock_stream_connect+0x2b3/0xc70
[ 560.321875][ T951] ? tomoyo_socket_listen_permission+0x3b0/0x3b0
[ 560.328283][ T951] ? vsock_dgram_connect+0x470/0x470
[ 560.333730][ T951] ? finish_wait+0x260/0x260
[ 560.338569][ T951] ? apparmor_socket_connect+0xb6/0x160
[ 560.344338][ T951] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 560.350700][ T951] __sys_connect_file+0x161/0x1c0
[ 560.355845][ T951] ? move_addr_to_kernel.part.0+0xcd/0x110
[ 560.361739][ T951] __sys_connect+0x174/0x1b0
[ 560.366435][ T951] ? __sys_connect_file+0x1c0/0x1c0
[ 560.371954][ T951] ? fd_install+0x4d/0x60
[ 560.376316][ T951] ? __sys_socket+0x180/0x220
[ 560.381337][ T951] ? down_read_non_owner+0x490/0x490
[ 560.386925][ T951] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 560.393112][ T951] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 560.398654][ T951] ? do_syscall_64+0x26/0x790
[ 560.403396][ T951] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 560.410445][ T951] ? do_syscall_64+0x26/0x790
[ 560.415251][ T951] __x64_sys_connect+0x73/0xb0
[ 560.420115][ T951] do_syscall_64+0xfa/0x790
[ 560.424686][ T951] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 560.430738][ T951] RIP: 0033:0x440209
[ 560.435827][ T951] Code: Bad RIP value.
[ 560.440002][ T951] RSP: 002b:00007ffdb9f67718 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[ 560.448534][ T951] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440209
[ 560.456508][ T951] RDX: 0000000000000010 RSI: 0000000020000440 RDI: 0000000000000003
[ 560.464666][ T951] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[ 560.472735][ T951] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401a90
[ 560.480881][ T951] R13: 0000000000401b20 R14: 0000000000000000 R15: 0000000000000000
[ 560.489152][ T951]
[ 560.489152][ T951] Showing all locks held in the system:
[ 560.496973][ T951] 1 lock held by khungtaskd/951:
[ 560.501937][ T951] #0: ffffffff89bac240 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279
[ 560.511396][ T951] 1 lock held by rsyslogd/9652:
[ 560.516246][ T951] #0: ffff8880a6533120 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
[ 560.525054][ T951] 2 locks held by getty/9742:
[ 560.529856][ T951] #0: ffff8880a693f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.539529][ T951] #1: ffffc900061bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.549254][ T951] 2 locks held by getty/9743:
[ 560.554007][ T951] #0: ffff88809f7a1090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.563066][ T951] #1: ffffc900061b72e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.572720][ T951] 2 locks held by getty/9744:
[ 560.577637][ T951] #0: ffff88809be3e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.586998][ T951] #1: ffffc900061632e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.596586][ T951] 2 locks held by getty/9745:
[ 560.601342][ T951] #0: ffff88808eb1e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.610587][ T951] #1: ffffc900061bf2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.620242][ T951] 2 locks held by getty/9746:
[ 560.624991][ T951] #0: ffff88808d33a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.634205][ T951] #1: ffffc900061732e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.644017][ T951] 2 locks held by getty/9747:
[ 560.648765][ T951] #0: ffff8880a6a0c090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.658024][ T951] #1: ffffc900061c32e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.668424][ T951] 2 locks held by getty/9748:
[ 560.673190][ T951] #0: ffff8880a6e4d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 560.682217][ T951] #1: ffffc900061332e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0
[ 560.692239][ T951] 1 lock held by syz-executor280/9768:
[ 560.697749][ T951] #0: ffff8880987cb8d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70
[ 560.707447][ T951]
[ 560.711669][ T951] =============================================
[ 560.711669][ T951]
[ 560.720252][ T951] NMI backtrace for cpu 1
[ 560.724586][ T951] CPU: 1 PID: 951 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0
[ 560.732726][ T951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 560.742866][ T951] Call Trace:
[ 560.746255][ T951] dump_stack+0x197/0x210
[ 560.750642][ T951] nmi_cpu_backtrace.cold+0x70/0xb2
[ 560.755935][ T951] ? vprintk_func+0x86/0x189
[ 560.760609][ T951] ? lapic_can_unplug_cpu.cold+0x3a/0x3a
[ 560.766246][ T951] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 560.772431][ T951] arch_trigger_cpumask_backtrace+0x14/0x20
[ 560.778349][ T951] watchdog+0xb11/0x10c0
[ 560.782762][ T951] kthread+0x361/0x430
[ 560.786875][ T951] ? reset_hung_task_detector+0x30/0x30
[ 560.792443][ T951] ? kthread_mod_delayed_work+0x1f0/0x1f0
[ 560.798271][ T951] ret_from_fork+0x24/0x30
[ 560.802856][ T951] Sending NMI from CPU 1 to CPUs 0:
[ 560.809183][ C0] NMI backtrace for cpu 0
[ 560.809189][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc1-syzkaller #0
[ 560.809195][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 560.809199][ C0] RIP: 0010:find_busiest_group+0xa33/0x3250
[ 560.809210][ C0] Code: 89 f8 83 e0 07 83 c0 03 40 38 f0 7c 09 40 84 f6 0f 85 f7 1f 00 00 48 8b b5 c0 fd ff ff 41 8b 41 2c 48 c1 ee 03 42 0f b6 34 26 <40> 84 f6 74 0a 40 80 fe 03 0f 8e 8f 1f 00 00 44 8b 6b 20 44 39 ea
[ 560.809214][ C0] RSP: 0018:ffffc90000007850 EFLAGS: 00000a06
[ 560.809221][ C0] RAX: 000000000000006e RBX: ffffc90000007938 RCX: 00000000000003fa
[ 560.809226][ C0] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8880a9a8282c
[ 560.809231][ C0] RBP: ffffc90000007af0 R08: ffffffff89a7a440 R09: ffff8880a9a82800
[ 560.809235][ C0] R10: 0000000000000000 R11: ffff8880a9a83f27 R12: dffffc0000000000
[ 560.809240][ C0] R13: ffff8880a9a83e80 R14: ffffc90000007ac8 R15: ffffc90000007c08
[ 560.809246][ C0] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[ 560.809250][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 560.809255][ C0] CR2: ffffffffff600400 CR3: 000000009fde0000 CR4: 00000000001406f0
[ 560.809259][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 560.809264][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 560.809266][ C0] Call Trace:
[ 560.809268][ C0] <IRQ>
[ 560.809271][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 560.809274][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50
[ 560.809277][ C0] ? update_group_capacity+0x850/0x850
[ 560.809280][ C0] ? find_next_and_bit+0x31/0x40
[ 560.809283][ C0] load_balance+0x38c/0x2b50
[ 560.809286][ C0] ? find_busiest_group+0x3250/0x3250
[ 560.809288][ C0] ? rcu_read_lock_held+0x9c/0xb0
[ 560.809292][ C0] ? rcu_read_lock_held_common+0x130/0x130
[ 560.809295][ C0] rebalance_domains+0x739/0x1000
[ 560.809303][ C0] ? trace_hardirqs_on+0x67/0x240
[ 560.809306][ C0] ? load_balance+0x2b50/0x2b50
[ 560.809308][ C0] _nohz_idle_balance+0x336/0x3f0
[ 560.809311][ C0] run_rebalance_domains+0x1c6/0x2d0
[ 560.809314][ C0] __do_softirq+0x262/0x98c
[ 560.809317][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 560.809319][ C0] irq_exit+0x19b/0x1e0
[ 560.809322][ C0] scheduler_ipi+0x38c/0x610
[ 560.809325][ C0] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 560.809328][ C0] smp_reschedule_interrupt+0x78/0x4c0
[ 560.809331][ C0] reschedule_interrupt+0xf/0x20
[ 560.809333][ C0] </IRQ>
[ 560.809336][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 560.809345][ C0] Code: 58 f5 c3 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 74 40 58 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 64 40 58 00 fb f4 <c3> cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ce ac 72 f9 e8 e9
[ 560.809348][ C0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
[ 560.809356][ C0] RAX: 1ffffffff136761a RBX: ffffffff89a7a440 RCX: 0000000000000000
[ 560.809360][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff89a7acd4
[ 560.809364][ C0] RBP: ffffffff89a07d18 R08: ffffffff89a7a440 R09: 0000000000000000
[ 560.809368][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 560.809372][ C0] R13: ffffffff8aa5ab80 R14: 0000000000000000 R15: 0000000000000000
[ 560.809375][ C0] ? default_idle+0x4e/0x360
[ 560.809378][ C0] arch_cpu_idle+0xa/0x10
[ 560.809381][ C0] default_idle_call+0x84/0xb0
[ 560.809383][ C0] do_idle+0x3c8/0x6e0
[ 560.809386][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 560.809389][ C0] ? trace_hardirqs_on+0x67/0x240
[ 560.809392][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 560.809395][ C0] ? debug_smp_processor_id+0x33/0x18a
[ 560.809398][ C0] cpu_startup_entry+0x1b/0x20
[ 560.809401][ C0] rest_init+0x23b/0x371
[ 560.809404][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[ 560.809407][ C0] arch_call_rest_init+0xe/0x1b
[ 560.809409][ C0] start_kernel+0x886/0x8c5
[ 560.809412][ C0] ? mem_encrypt_init+0xb/0xb
[ 560.809416][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 560.809418][ C0] ? x86_family+0x41/0x50
[ 560.809422][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 560.809425][ C0] x86_64_start_reservations+0x29/0x2b
[ 560.809427][ C0] x86_64_start_kernel+0x77/0x7b
[ 560.809430][ C0] secondary_startup_64+0xa4/0xb0
[ 560.810261][ T951] Kernel panic - not syncing: hung_task: blocked tasks
[ 561.242145][ T951] CPU: 1 PID: 951 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0
[ 561.250531][ T951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 561.262519][ T951] Call Trace:
[ 561.265828][ T951] dump_stack+0x197/0x210
[ 561.270216][ T951] panic+0x2e3/0x75c
[ 561.274307][ T951] ? add_taint.cold+0x16/0x16
[ 561.278980][ T951] ? lapic_can_unplug_cpu.cold+0x3a/0x3a
[ 561.284650][ T951] ? ___preempt_schedule+0x16/0x18
[ 561.289829][ T951] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b
[ 561.296024][ T951] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b
[ 561.302286][ T951] ? nmi_trigger_cpumask_backtrace+0x256/0x28b
[ 561.308729][ T951] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b
[ 561.314896][ T951] watchdog+0xb22/0x10c0
[ 561.319139][ T951] kthread+0x361/0x430
[ 561.323290][ T951] ? reset_hung_task_detector+0x30/0x30
[ 561.328945][ T951] ? kthread_mod_delayed_work+0x1f0/0x1f0
[ 561.334661][ T951] ret_from_fork+0x24/0x30
[ 561.341328][ T951] Kernel Offset: disabled
[ 561.345985][ T951] Rebooting in 86400 seconds..