[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  998.033722] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.047393] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.121168] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.137565] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
executing program
[  998.204517] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.214066] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[  998.302361] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.311711] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.360898] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.380580] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.461272] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.474025] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.523087] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.536799] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.605785] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.627285] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.693052] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.703401] EXT4-fs (loop0): re-mounted. Opts: (null)
[  998.761500] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.770715] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
executing program
[  998.851187] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.870349] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  998.943765] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  998.961457] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[  999.001488] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.020690] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.091408] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.112872] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.174808] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.188450] EXT4-fs (loop0): re-mounted. Opts: (null)
[  999.240882] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.253149] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[  999.330726] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.343786] EXT4-fs (loop0): re-mounted. Opts: (null)
[  999.412395] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.442426] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.525237] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.540528] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
executing program
[  999.620827] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.640309] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.701370] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.712306] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.770751] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.790443] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[  999.851278] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.864049] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[  999.946716] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[  999.957044] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1000.021439] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.040209] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1000.113992] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.129855] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1000.190825] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.209321] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1000.260692] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.273322] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1000.324655] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.341889] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1000.420723] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.439691] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1000.500964] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.513350] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1000.580539] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.595623] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1000.680515] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.693656] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1000.751840] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.765693] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1000.823511] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.844466] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1000.893453] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.912569] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1000.973203] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1000.986843] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.044559] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.058111] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1001.117769] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.132833] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.201621] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.216597] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1001.285609] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.305702] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.370405] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.379871] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.427848] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.444803] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1001.500721] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.510487] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.590643] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.609879] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
executing program
[ 1001.680512] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.699268] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1001.792109] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.801715] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1001.880509] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.895578] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1001.962775] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1001.972061] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1002.040401] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.060376] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1002.114963] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.133881] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1002.177645] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.186983] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1002.251863] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.265340] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1002.326864] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.350099] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1002.424886] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.444291] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1002.521368] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.530652] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1002.614858] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.625003] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1002.678706] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.687895] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1002.760737] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.770199] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1002.831825] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.849563] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1002.940530] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1002.954524] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1003.045794] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1003.064681] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1003.154031] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1003.172802] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1003.250351] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[ 1003.269568] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1003.348974] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1003.434993] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1003.503473] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1003.578588] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
executing program
[ 1003.645143] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1003.719277] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1003.768957] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1003.855148] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1003.918920] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1003.978554] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
executing program
[ 1004.059155] EXT4-fs (loop0): re-mounted. Opts: (null)
executing program
[ 1004.138930] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1004.199208] EXT4-fs (loop0): re-mounted. Opts: (null)
[ 1288.027778] INFO: task syz-executor336:7984 blocked for more than 140 seconds.
[ 1288.035212]       Not tainted 4.14.302-syzkaller #0
[ 1288.041008] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1288.049007] syz-executor336 D28424  7984   7982 0x00000000
[ 1288.054614] Call Trace:
[ 1288.057180]  __schedule+0x88b/0x1de0
[ 1288.060914]  ? io_schedule_timeout+0x140/0x140
[ 1288.065484]  ? trace_hardirqs_on+0x10/0x10
[ 1288.069778]  schedule+0x8d/0x1b0
[ 1288.073135]  schedule_timeout+0x80a/0xe90
[ 1288.077264]  ? deactivate_locked_super+0x6c/0xd0
[ 1288.082040]  ? deactivate_super+0x7f/0xa0
[ 1288.086174]  ? cleanup_mnt+0x186/0x2c0
[ 1288.090086]  ? task_work_run+0x11f/0x190
[ 1288.094132]  ? exit_to_usermode_loop+0x1ad/0x200
[ 1288.098912]  ? usleep_range+0x130/0x130
[ 1288.102872]  ? wait_for_common+0x26a/0x430
[ 1288.107084]  ? mark_held_locks+0xa6/0xf0
[ 1288.111160]  ? _raw_spin_unlock_irq+0x24/0x80
[ 1288.115642]  wait_for_common+0x272/0x430
[ 1288.119748]  ? try_to_wake_up+0x6de/0x1100
[ 1288.123972]  ? out_of_line_wait_on_atomic_t+0x1a0/0x1a0
[ 1288.129355]  ? wake_up_q+0xd0/0xd0
[ 1288.132884]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1288.138355]  kthread_stop+0xce/0x640
[ 1288.142057]  ext4_put_super+0x865/0xf00
[ 1288.146006]  ? fsnotify_unmount_inodes+0x1b4/0x210
[ 1288.151056]  ? ext4_quota_write+0x420/0x420
[ 1288.155366]  generic_shutdown_super+0x144/0x370
[ 1288.160060]  kill_block_super+0x95/0xe0
[ 1288.164018]  deactivate_locked_super+0x6c/0xd0
[ 1288.168616]  deactivate_super+0x7f/0xa0
[ 1288.172584]  cleanup_mnt+0x186/0x2c0
[ 1288.176274]  task_work_run+0x11f/0x190
[ 1288.180183]  exit_to_usermode_loop+0x1ad/0x200
[ 1288.184756]  do_syscall_64+0x4a3/0x640
[ 1288.188665]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 1288.193839] RIP: 0033:0x7f186da25c97
[ 1288.197520] RSP: 002b:00007fff4ea6b488 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[ 1288.205256] RAX: 0000000000000000 RBX: 00000000000f52f0 RCX: 00007f186da25c97
[ 1288.212556] RDX: 00007fff4ea6b54a RSI: 000000000000000a RDI: 00007fff4ea6b540
[ 1288.219854] RBP: 00007fff4ea6b540 R08: 00000000ffffffff R09: 00007fff4ea6b320
[ 1288.227108] R10: 000055555692b633 R11: 0000000000000206 R12: 00007fff4ea6c5b0
[ 1288.234393] R13: 000055555692b5f0 R14: 00007fff4ea6b4b0 R15: 0000000000000058
[ 1288.241712] 
[ 1288.241712] Showing all locks held in the system:
[ 1288.248061] 1 lock held by khungtaskd/1533:
[ 1288.252426]  #0:  (tasklist_lock){.+.+}, at: [<ffffffff8702b3a4>] debug_show_all_locks+0x7c/0x21a
[ 1288.261508] 1 lock held by syz-executor336/7984:
[ 1288.266243]  #0:  (&type->s_umount_key#39){++++}, at: [<ffffffff818785b7>] deactivate_super+0x77/0xa0
[ 1288.275721] 
[ 1288.277329] =============================================
[ 1288.277329] 
[ 1288.284398] NMI backtrace for cpu 1
[ 1288.288051] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0
[ 1288.295475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1288.304814] Call Trace:
[ 1288.307375]  dump_stack+0x1b2/0x281
[ 1288.310974]  nmi_cpu_backtrace.cold+0x57/0x93
[ 1288.315440]  ? irq_force_complete_move+0x350/0x350
[ 1288.320340]  nmi_trigger_cpumask_backtrace+0x13a/0x180
[ 1288.325589]  watchdog+0x5b9/0xb40
[ 1288.329014]  ? hungtask_pm_notify+0x50/0x50
[ 1288.333308]  kthread+0x30d/0x420
[ 1288.336646]  ? kthread_create_on_node+0xd0/0xd0
[ 1288.341287]  ret_from_fork+0x24/0x30
[ 1288.345040] Sending NMI from CPU 1 to CPUs 0:
[ 1288.349597] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8724bc2e
[ 1288.350551] Kernel panic - not syncing: hung_task: blocked tasks
[ 1288.362905] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0
[ 1288.370321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 1288.379645] Call Trace:
[ 1288.382211]  dump_stack+0x1b2/0x281
[ 1288.385814]  panic+0x1f9/0x42d
[ 1288.388977]  ? add_taint.cold+0x16/0x16
[ 1288.392926]  watchdog+0x5ca/0xb40
[ 1288.396353]  ? hungtask_pm_notify+0x50/0x50
[ 1288.400648]  kthread+0x30d/0x420
[ 1288.403986]  ? kthread_create_on_node+0xd0/0xd0
[ 1288.408628]  ret_from_fork+0x24/0x30
[ 1288.412572] Kernel Offset: disabled
[ 1288.416180] Rebooting in 86400 seconds..