[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [ 1144.701602] INFO: task syz-executor678:8007 blocked for more than 140 seconds.
[ 1144.701609] Not tainted 4.14.258-syzkaller #0
[ 1144.701612] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1144.701616] syz-executor678 D27384 8007 8005 0x00000004
[ 1144.701634] Call Trace:
[ 1144.701652] __schedule+0x88b/0x1de0
[ 1144.701665] ? io_schedule_timeout+0x140/0x140
[ 1144.701673] ? lock_downgrade+0x740/0x740
[ 1144.701683] schedule+0x8d/0x1b0
[ 1144.746142] blkdev_get+0x3ee/0x890
[ 1144.749747] ? __blkdev_get+0x1090/0x1090
[ 1144.753925] ? wait_woken+0x230/0x230
[ 1144.757716] ? bd_acquire+0x440/0x440
[ 1144.761552] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1144.766999] blkdev_get_by_path+0x38/0xa0
[ 1144.771128] mount_bdev+0x4c/0x360
[ 1144.774694] ? udf_load_vrs+0xa90/0xa90
[ 1144.778658] mount_fs+0x92/0x2a0
[ 1144.782047] vfs_kern_mount.part.0+0x5b/0x470
[ 1144.786554] do_mount+0xe65/0x2a10
[ 1144.790075] ? lock_acquire+0x170/0x3f0
[ 1144.794072] ? lock_downgrade+0x740/0x740
[ 1144.798213] ? copy_mount_string+0x40/0x40
[ 1144.802472] ? __might_fault+0x177/0x1b0
[ 1144.806530] ? _copy_from_user+0x96/0x100
[ 1144.810655] ? copy_mount_options+0x1fa/0x2f0
[ 1144.815175] ? copy_mnt_ns+0xa30/0xa30
[ 1144.819052] SyS_mount+0xa8/0x120
[ 1144.822534] ? copy_mnt_ns+0xa30/0xa30
[ 1144.826412] do_syscall_64+0x1d5/0x640
[ 1144.830279] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1144.835490] RIP: 0033:0x7f6e55bd9579
[ 1144.839302] RSP: 002b:00007fff88938738 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 1144.847031] RAX: ffffffffffffffda RBX: 00007fff88938770 RCX: 00007f6e55bd9579
[ 1144.854329] RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000020000080
[ 1144.861645] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1144.868911] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 1144.876216] R13: 0000000000000000 R14: 00007fff8893875c R15: 00007fff88938760
[ 1144.883544] INFO: task syz-executor678:8010 blocked for more than 140 seconds.
[ 1144.890894] Not tainted 4.14.258-syzkaller #0
[ 1144.895925] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1144.903920] syz-executor678 D27200 8010 8006 0x80000004
[ 1144.909537] Call Trace:
[ 1144.912229] __schedule+0x88b/0x1de0
[ 1144.915937] ? io_schedule_timeout+0x140/0x140
[ 1144.920499] ? lock_downgrade+0x740/0x740
[ 1144.924677] schedule+0x8d/0x1b0
[ 1144.928037] schedule_preempt_disabled+0xf/0x20
[ 1144.932736] __mutex_lock+0x669/0x1310
[ 1144.936617] ? lo_ioctl+0x87/0x1cd0
[ 1144.940225] ? __ww_mutex_wakeup_for_backoff+0x210/0x210
[ 1144.945702] ? kasan_kmalloc+0x139/0x160
[ 1144.949754] ? mount_fs+0x92/0x2a0
[ 1144.953319] ? vfs_kern_mount.part.0+0x5b/0x470
[ 1144.957977] ? do_mount+0xe65/0x2a10
[ 1144.961712] ? SyS_mount+0xa8/0x120
[ 1144.965424] ? do_syscall_64+0x1d5/0x640
[ 1144.969729] lo_ioctl+0x87/0x1cd0
[ 1144.973204] ? trace_hardirqs_on+0x10/0x10
[ 1144.977436] ? string+0x17e/0x1d0
[ 1144.980868] ? loop_set_status64+0xe0/0xe0
[ 1144.985127] blkdev_ioctl+0x540/0x1830
[ 1144.989005] ? blkpg_ioctl+0x8d0/0x8d0
[ 1144.992920] ? udf_parse_options+0xdca/0x1080
[ 1144.997402] ? bdev_name.constprop.0+0x1cd/0x240
[ 1145.002188] ioctl_by_bdev+0xa0/0x110
[ 1145.005978] udf_get_last_session+0x7c/0xd0
[ 1145.010274] ? udf_bread+0x1f0/0x1f0
[ 1145.014009] ? __rwlock_init+0x28/0x140
[ 1145.017973] udf_fill_super+0x11e6/0x1660
[ 1145.022548] ? udf_load_vrs+0xa90/0xa90
[ 1145.026534] ? lock_downgrade+0x740/0x740
[ 1145.030657] ? snprintf+0xa5/0xd0
[ 1145.034136] ? vsprintf+0x30/0x30
[ 1145.037584] mount_bdev+0x2b3/0x360
[ 1145.041193] ? udf_load_vrs+0xa90/0xa90
[ 1145.045191] mount_fs+0x92/0x2a0
[ 1145.048547] vfs_kern_mount.part.0+0x5b/0x470
[ 1145.053083] do_mount+0xe65/0x2a10
[ 1145.056622] ? lock_acquire+0x170/0x3f0
[ 1145.060582] ? lock_downgrade+0x740/0x740
[ 1145.064761] ? copy_mount_string+0x40/0x40
[ 1145.068991] ? __might_fault+0x177/0x1b0
[ 1145.073076] ? _copy_from_user+0x96/0x100
[ 1145.077215] ? copy_mount_options+0x1fa/0x2f0
[ 1145.081730] ? copy_mnt_ns+0xa30/0xa30
[ 1145.085607] SyS_mount+0xa8/0x120
[ 1145.089036] ? copy_mnt_ns+0xa30/0xa30
[ 1145.092959] do_syscall_64+0x1d5/0x640
[ 1145.096838] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1145.102048] RIP: 0033:0x7f6e55bd9579
[ 1145.105748] RSP: 002b:00007fff88938738 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 1145.113479] RAX: ffffffffffffffda RBX: 00007fff88938770 RCX: 00007f6e55bd9579
[ 1145.120739] RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000020000080
[ 1145.128046] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1145.135357] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 1145.142744] R13: 0000000000000000 R14: 00007fff8893875c R15: 00007fff88938760
[ 1145.150033] INFO: task syz-executor678:8019 blocked for more than 140 seconds.
[ 1145.157425] Not tainted 4.14.258-syzkaller #0
[ 1145.162466] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.170417] syz-executor678 D28912 8019 8016 0x00000004
[ 1145.176066] Call Trace:
[ 1145.178648] __schedule+0x88b/0x1de0
[ 1145.182392] ? io_schedule_timeout+0x140/0x140
[ 1145.186964] ? mark_held_locks+0xa6/0xf0
[ 1145.191001] ? _raw_spin_unlock_irq+0x24/0x80
[ 1145.195519] ? rwsem_down_read_failed+0x1e6/0x350
[ 1145.200351] schedule+0x8d/0x1b0
[ 1145.203738] rwsem_down_read_failed+0x1e6/0x350
[ 1145.208395] ? rt_mutex_futex_unlock+0xc0/0xc0
[ 1145.213009] call_rwsem_down_read_failed+0x14/0x30
[ 1145.217930] down_read+0x44/0x80
[ 1145.221274] ? __get_super.part.0+0x271/0x390
[ 1145.225803] __get_super.part.0+0x271/0x390
[ 1145.230115] get_super+0x2b/0x50
[ 1145.233506] fsync_bdev+0x14/0xc0
[ 1145.236951] invalidate_partition+0x74/0xb0
[ 1145.241250] drop_partitions.isra.0+0x83/0x150
[ 1145.246151] ? delete_partition+0x180/0x180
[ 1145.250484] ? _raw_spin_unlock_irqrestore+0x79/0xe0
[ 1145.255737] ? blkdev_reread_part+0x1b/0x40
[ 1145.260051] rescan_partitions+0xa9/0x800
[ 1145.264242] __blkdev_reread_part+0x140/0x1d0
[ 1145.268729] blkdev_reread_part+0x23/0x40
[ 1145.272921] loop_set_status+0xeeb/0x12b0
[ 1145.277065] loop_set_status64+0x92/0xe0
[ 1145.281102] ? loop_set_status_old+0x200/0x200
[ 1145.285718] ? __mutex_lock+0x360/0x1310
[ 1145.289808] ? wait_for_completion_io+0x10/0x10
[ 1145.294507] ? set_blocksize+0x125/0x380
[ 1145.298562] lo_ioctl+0x587/0x1cd0
[ 1145.302131] ? loop_set_status64+0xe0/0xe0
[ 1145.306374] blkdev_ioctl+0x540/0x1830
[ 1145.310252] ? blkpg_ioctl+0x8d0/0x8d0
[ 1145.314176] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 1145.319444] ? debug_check_no_obj_freed+0x2c0/0x680
[ 1145.324492] block_ioctl+0xd9/0x120
[ 1145.328112] ? blkdev_fallocate+0x3a0/0x3a0
[ 1145.332455] do_vfs_ioctl+0x75a/0xff0
[ 1145.336247] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1145.341777] ? ioctl_preallocate+0x1a0/0x1a0
[ 1145.346178] ? kmem_cache_free+0x23a/0x2b0
[ 1145.350500] ? putname+0xcd/0x110
[ 1145.353992] ? do_sys_open+0x208/0x410
[ 1145.357881] ? filp_open+0x60/0x60
[ 1145.361450] ? security_file_ioctl+0x83/0xb0
[ 1145.365848] SyS_ioctl+0x7f/0xb0
[ 1145.369191] ? do_vfs_ioctl+0xff0/0xff0
[ 1145.373192] do_syscall_64+0x1d5/0x640
[ 1145.377111] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1145.382327] RIP: 0033:0x7f6e55bd9427
[ 1145.386024] RSP: 002b:00007fff889384d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[ 1145.393758] RAX: ffffffffffffffda RBX: 00007fff88938500 RCX: 00007f6e55bd9427
[ 1145.401032] RDX: 00007fff88938610 RSI: 0000000000004c04 RDI: 0000000000000004
[ 1145.408324] RBP: 0000000000000004 R08: 00007fff88938370 R09: 0000000000000000
[ 1145.415628] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 1145.422930] R13: 0000555556554384 R14: 00007fff88938610 R15: 00007fff88938760
[ 1145.430217] INFO: task syz-executor678:8020 blocked for more than 140 seconds.
[ 1145.437637] Not tainted 4.14.258-syzkaller #0
[ 1145.442682] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.450635] syz-executor678 D27544 8020 8018 0x00000004
[ 1145.456282] Call Trace:
[ 1145.458863] __schedule+0x88b/0x1de0
[ 1145.462613] ? io_schedule_timeout+0x140/0x140
[ 1145.467183] ? lock_downgrade+0x740/0x740
[ 1145.471313] schedule+0x8d/0x1b0
[ 1145.474731] schedule_preempt_disabled+0xf/0x20
[ 1145.479396] __mutex_lock+0x669/0x1310
[ 1145.483318] ? __blkdev_get+0x191/0x1090
[ 1145.487367] ? __ww_mutex_wakeup_for_backoff+0x210/0x210
[ 1145.492850] ? exact_match+0x9/0x20
[ 1145.496471] ? disk_block_events+0x1d/0x120
[ 1145.500772] __blkdev_get+0x191/0x1090
[ 1145.504682] ? blkdev_get+0x422/0x890
[ 1145.508475] ? lock_acquire+0x170/0x3f0
[ 1145.512479] ? sb_min_blocksize+0x1d0/0x1d0
[ 1145.516881] blkdev_get+0x441/0x890
[ 1145.520483] ? __blkdev_get+0x1090/0x1090
[ 1145.524654] ? mntput+0x5c/0x80
[ 1145.527926] ? lookup_bdev+0x8c/0x1c0
[ 1145.531754] ? bd_acquire+0x440/0x440
[ 1145.535545] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1145.540972] blkdev_get_by_path+0x38/0xa0
[ 1145.545143] mount_bdev+0x4c/0x360
[ 1145.548675] ? udf_load_vrs+0xa90/0xa90
[ 1145.552675] mount_fs+0x92/0x2a0
[ 1145.556036] vfs_kern_mount.part.0+0x5b/0x470
[ 1145.560507] do_mount+0xe65/0x2a10
[ 1145.564072] ? lock_acquire+0x170/0x3f0
[ 1145.568036] ? lock_downgrade+0x740/0x740
[ 1145.572211] ? copy_mount_string+0x40/0x40
[ 1145.576446] ? __might_fault+0x177/0x1b0
[ 1145.580670] ? _copy_from_user+0x96/0x100
[ 1145.584849] ? copy_mount_options+0x1fa/0x2f0
[ 1145.589333] ? copy_mnt_ns+0xa30/0xa30
[ 1145.593273] SyS_mount+0xa8/0x120
[ 1145.596715] ? copy_mnt_ns+0xa30/0xa30
[ 1145.600583] do_syscall_64+0x1d5/0x640
[ 1145.604497] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1145.609675] RIP: 0033:0x7f6e55bd9579
[ 1145.613421] RSP: 002b:00007fff88938738 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 1145.621119] RAX: ffffffffffffffda RBX: 00007fff88938770 RCX: 00007f6e55bd9579
[ 1145.628417] RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000020000080
[ 1145.635741] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1145.643040] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 1145.650563] R13: 0000000000000000 R14: 00007fff8893875c R15: 00007fff88938760
[ 1145.657911] INFO: task syz-executor678:8021 blocked for more than 140 seconds.
[ 1145.665308] Not tainted 4.14.258-syzkaller #0
[ 1145.670303] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.678284] syz-executor678 D27544 8021 8015 0x00000004
[ 1145.683956] Call Trace:
[ 1145.686535] __schedule+0x88b/0x1de0
[ 1145.690227] ? io_schedule_timeout+0x140/0x140
[ 1145.694846] ? lock_downgrade+0x740/0x740
[ 1145.698992] schedule+0x8d/0x1b0
[ 1145.702385] blkdev_get+0x3ee/0x890
[ 1145.706004] ? __blkdev_get+0x1090/0x1090
[ 1145.710127] ? wait_woken+0x230/0x230
[ 1145.713963] ? bd_acquire+0x440/0x440
[ 1145.717756] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1145.723235] blkdev_get_by_path+0x38/0xa0
[ 1145.727372] mount_bdev+0x4c/0x360
[ 1145.730891] ? udf_load_vrs+0xa90/0xa90
[ 1145.734893] mount_fs+0x92/0x2a0
[ 1145.738252] vfs_kern_mount.part.0+0x5b/0x470
[ 1145.742868] do_mount+0xe65/0x2a10
[ 1145.746399] ? lock_acquire+0x170/0x3f0
[ 1145.750350] ? lock_downgrade+0x740/0x740
[ 1145.754525] ? copy_mount_string+0x40/0x40
[ 1145.758748] ? __might_fault+0x177/0x1b0
[ 1145.762833] ? _copy_from_user+0x96/0x100
[ 1145.766970] ? copy_mount_options+0x1fa/0x2f0
[ 1145.771485] ? copy_mnt_ns+0xa30/0xa30
[ 1145.775363] SyS_mount+0xa8/0x120
[ 1145.778790] ? copy_mnt_ns+0xa30/0xa30
[ 1145.782706] do_syscall_64+0x1d5/0x640
[ 1145.786587] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1145.791803] RIP: 0033:0x7f6e55bd9579
[ 1145.795500] RSP: 002b:00007fff88938738 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 1145.803231] RAX: ffffffffffffffda RBX: 00007fff88938770 RCX: 00007f6e55bd9579
[ 1145.810534] RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000020000080
[ 1145.817829] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1145.825156] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 1145.832495] R13: 0000000000000000 R14: 00007fff8893875c R15: 00007fff88938760
[ 1145.839801] INFO: task syz-executor678:8022 blocked for more than 140 seconds.
[ 1145.847206] Not tainted 4.14.258-syzkaller #0
[ 1145.852267] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.860219] syz-executor678 D27544 8022 8017 0x00000004
[ 1145.865885] Call Trace:
[ 1145.868469] __schedule+0x88b/0x1de0
[ 1145.872311] ? io_schedule_timeout+0x140/0x140
[ 1145.876883] ? lock_downgrade+0x740/0x740
[ 1145.881019] schedule+0x8d/0x1b0
[ 1145.884425] blkdev_get+0x3ee/0x890
[ 1145.888051] ? __blkdev_get+0x1090/0x1090
[ 1145.892231] ? wait_woken+0x230/0x230
[ 1145.896027] ? bd_acquire+0x440/0x440
[ 1145.899818] ? rcu_lockdep_current_cpu_online+0xed/0x140
[ 1145.905483] blkdev_get_by_path+0x38/0xa0
[ 1145.909623] mount_bdev+0x4c/0x360
[ 1145.913187] ? udf_load_vrs+0xa90/0xa90
[ 1145.917151] mount_fs+0x92/0x2a0
[ 1145.920496] vfs_kern_mount.part.0+0x5b/0x470
[ 1145.925021] do_mount+0xe65/0x2a10
[ 1145.928552] ? lock_acquire+0x170/0x3f0
[ 1145.932553] ? lock_downgrade+0x740/0x740
[ 1145.936697] ? copy_mount_string+0x40/0x40
[ 1145.940909] ? __might_fault+0x177/0x1b0
[ 1145.944999] ? _copy_from_user+0x96/0x100
[ 1145.949164] ? copy_mount_options+0x1fa/0x2f0
[ 1145.953678] ? copy_mnt_ns+0xa30/0xa30
[ 1145.957562] SyS_mount+0xa8/0x120
[ 1145.961003] ? copy_mnt_ns+0xa30/0xa30
[ 1145.964915] do_syscall_64+0x1d5/0x640
[ 1145.968791] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1145.974203] RIP: 0033:0x7f6e55bd9579
[ 1145.977900] RSP: 002b:00007fff88938738 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 1145.985689] RAX: ffffffffffffffda RBX: 00007fff88938770 RCX: 00007f6e55bd9579
[ 1145.993018] RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000020000080
[ 1146.000284] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1146.007600] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
[ 1146.015026] R13: 0000000000000000 R14: 00007fff8893875c R15: 00007fff88938760
[ 1146.022370] INFO: task systemd-udevd:8044 blocked for more than 140 seconds.
[ 1146.029719] Not tainted 4.14.258-syzkaller #0
[ 1146.034772] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1146.042772] systemd-udevd D28912 8044 4627 0x00000104
[ 1146.048397] Call Trace:
[ 1146.050967] __schedule+0x88b/0x1de0
[ 1146.054723] ? io_schedule_timeout+0x140/0x140
[ 1146.059295] ? lock_downgrade+0x740/0x740
[ 1146.063483] schedule+0x8d/0x1b0
[ 1146.066842] schedule_preempt_disabled+0xf/0x20
[ 1146.071534] __mutex_lock+0x669/0x1310
[ 1146.075418] ? kernel_text_address+0xbd/0xf0
[ 1146.079853] ? __blkdev_get+0x191/0x1090
[ 1146.083951] ? __ww_mutex_wakeup_for_backoff+0x210/0x210
[ 1146.089395] ? exact_match+0x9/0x20
[ 1146.093057] ? disk_block_events+0x1d/0x120
[ 1146.097373] __blkdev_get+0x191/0x1090
[ 1146.101247] ? lookup_fast+0x430/0xe30
[ 1146.105157] ? sb_min_blocksize+0x1d0/0x1d0
[ 1146.109471] ? fsnotify+0x974/0x11b0
[ 1146.113215] blkdev_get+0x88/0x890
[ 1146.116832] ? __blkdev_get+0x1090/0x1090
[ 1146.120959] ? lock_downgrade+0x740/0x740
[ 1146.125131] ? do_raw_spin_unlock+0x164/0x220
[ 1146.129617] ? _raw_spin_unlock+0x29/0x40
[ 1146.133816] blkdev_open+0x1cc/0x250
[ 1146.137541] ? security_file_open+0x82/0x190
[ 1146.141977] do_dentry_open+0x44b/0xec0
[ 1146.145941] ? blkdev_get_by_dev+0x70/0x70
[ 1146.150167] vfs_open+0x105/0x220
[ 1146.153678] path_openat+0x628/0x2970
[ 1146.157481] ? path_lookupat+0x780/0x780
[ 1146.161591] ? trace_hardirqs_on+0x10/0x10
[ 1146.165827] ? lock_downgrade+0x740/0x740
[ 1146.169966] do_filp_open+0x179/0x3c0
[ 1146.173825] ? may_open_dev+0xe0/0xe0
[ 1146.177624] ? lock_downgrade+0x740/0x740
[ 1146.181802] ? do_raw_spin_unlock+0x164/0x220
[ 1146.186293] ? _raw_spin_unlock+0x29/0x40
[ 1146.190423] ? __alloc_fd+0x1be/0x490
[ 1146.194259] do_sys_open+0x296/0x410
[ 1146.197966] ? filp_open+0x60/0x60
[ 1146.201537] ? do_syscall_64+0x4c/0x640
[ 1146.205504] ? do_sys_open+0x410/0x410
[ 1146.209481] do_syscall_64+0x1d5/0x640
[ 1146.213409] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 1146.218712] RIP: 0033:0x7f36c4bdf840
[ 1146.222456] RSP: 002b:00007ffd87b65888 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[ 1146.230157] RAX: ffffffffffffffda RBX: 000055a490895140 RCX: 00007f36c4bdf840
[ 1146.237603] RDX: 000055a490061fe3 RSI: 00000000000a0800 RDI: 000055a49088e8f0
[ 1146.245023] RBP: 00007ffd87b65a00 R08: 000055a490061670 R09: 0000000000000010
[ 1146.252357] R10: 000055a490061d0c R11: 0000000000000246 R12: 00007ffd87b65950
[ 1146.259677] R13: 000055a49088e7d0 R14: 0000000000000003 R15: 000000000000000e
[ 1146.267007]
[ 1146.267007] Showing all locks held in the system:
[ 1146.273371] 1 lock held by khungtaskd/1534:
[ 1146.277734] #0: (tasklist_lock){.+.+}, at: [<ffffffff8701ebe7>] debug_show_all_locks+0x7c/0x21a
[ 1146.286941] 2 locks held by syz-executor678/8010:
[ 1146.291831] #0: (&type->s_umount_key#46/1){+.+.}, at: [<ffffffff81875bd6>] sget_userns+0x556/0xc10
[ 1146.301123] #1: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff838dc7c7>] lo_ioctl+0x87/0x1cd0
[ 1146.309883] 3 locks held by syz-executor678/8019:
[ 1146.314790] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff838dc7c7>] lo_ioctl+0x87/0x1cd0
[ 1146.323599] #1: (&bdev->bd_mutex){+.+.}, at: [<ffffffff830b9c4b>] blkdev_reread_part+0x1b/0x40
[ 1146.332661] #2: (&type->s_umount_key#47){.+.+}, at: [<ffffffff81877471>] __get_super.part.0+0x271/0x390
[ 1146.342444] 1 lock held by syz-executor678/8020:
[ 1146.347186] #0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81940301>] __blkdev_get+0x191/0x1090
[ 1146.355959] 1 lock held by systemd-udevd/8044:
[ 1146.360617] #0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81940301>] __blkdev_get+0x191/0x1090
[ 1146.369367]
[ 1146.370984] =============================================
[ 1146.370984]
[ 1146.378134] NMI backtrace for cpu 0
[ 1146.381830] CPU: 0 PID: 1534 Comm: khungtaskd Not tainted 4.14.258-syzkaller #0
[ 1146.389960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1146.399394] Call Trace:
[ 1146.401966] dump_stack+0x1b2/0x281
[ 1146.405582] nmi_cpu_backtrace.cold+0x57/0x93
[ 1146.410057] ? irq_force_complete_move+0x350/0x350
[ 1146.414976] nmi_trigger_cpumask_backtrace+0x13a/0x180
[ 1146.420240] watchdog+0x5b9/0xb40
[ 1146.423669] ? hungtask_pm_notify+0x50/0x50
[ 1146.427979] kthread+0x30d/0x420
[ 1146.431329] ? kthread_create_on_node+0xd0/0xd0
[ 1146.436003] ret_from_fork+0x24/0x30
[ 1146.439780] Sending NMI from CPU 0 to CPUs 1:
[ 1146.444620] NMI backtrace for cpu 1
[ 1146.444625] CPU: 1 PID: 8 Comm: rcu_preempt Not tainted 4.14.258-syzkaller #0
[ 1146.444629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1146.444632] task: ffff8880b5420200 task.stack: ffff8880b5428000
[ 1146.444635] RIP: 0010:mark_held_locks+0xb6/0xf0
[ 1146.444637] RSP: 0018:ffff8880b542fc20 EFLAGS: 00000046
[ 1146.444642] RAX: 0000000000000000 RBX: ffff8880b5420200 RCX: 0000000000000000
[ 1146.444646] RDX: 1ffff11016a84150 RSI: 0000000000000000 RDI: ffff8880b5420a80
[ 1146.444649] RBP: ffffffff81485580 R08: ffffffff8b9c0bf0 R09: 0000000000000000
[ 1146.444653] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000297
[ 1146.444656] R13: ffff8880b5420200 R14: ffff8880b542fd18 R15: 0000000000000001
[ 1146.444660] FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[ 1146.444663] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1146.444666] CR2: 00007f1ac4857020 CR3: 00000000a102a000 CR4: 00000000003406e0
[ 1146.444670] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1146.444673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1146.444675] Call Trace:
[ 1146.444677] ? del_timer_sync+0x1a0/0x240
[ 1146.444680] trace_hardirqs_on_caller+0x288/0x580
[ 1146.444682] del_timer_sync+0x1a0/0x240
[ 1146.444684] schedule_timeout+0x4b7/0xe90
[ 1146.444687] ? _raw_spin_unlock_irqrestore+0x79/0xe0
[ 1146.444689] ? usleep_range+0x130/0x130
[ 1146.444692] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 1146.444695] ? prepare_to_swait+0x115/0x2a0
[ 1146.444697] ? run_timer_softirq+0x5a0/0x5a0
[ 1146.444699] rcu_gp_kthread+0xc0a/0x1e60
[ 1146.444701] ? force_qs_rnp+0x4f0/0x4f0
[ 1146.444704] ? force_qs_rnp+0x4f0/0x4f0
[ 1146.444706] kthread+0x30d/0x420
[ 1146.444708] ? kthread_create_on_node+0xd0/0xd0
[ 1146.444710] ret_from_fork+0x24/0x30
[ 1146.444712] Code: c0 75 4c 0f b6 46 22 44 89 e2 a8 03 0f 45 d5 a8 04 74 0c 4c 89 ef e8 0a ef ff ff 85 c0 74 11 83 c3 01 41 39 9d 80 08 00 00 7f af <b8> 01 00 00 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 89
[ 1146.445414] Kernel panic - not syncing: hung_task: blocked tasks
[ 1146.644375] CPU: 0 PID: 1534 Comm: khungtaskd Not tainted 4.14.258-syzkaller #0
[ 1146.651799] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1146.661146] Call Trace:
[ 1146.663718] dump_stack+0x1b2/0x281
[ 1146.667321] panic+0x1f9/0x42d
[ 1146.670489] ? add_taint.cold+0x16/0x16
[ 1146.674456] watchdog+0x5ca/0xb40
[ 1146.677881] ? hungtask_pm_notify+0x50/0x50
[ 1146.682182] kthread+0x30d/0x420
[ 1146.685520] ? kthread_create_on_node+0xd0/0xd0
[ 1146.690168] ret_from_fork+0x24/0x30
[ 1146.694245] Kernel Offset: disabled
[ 1146.697857] Rebooting in 86400 seconds..