[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.238' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 855.650424] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 855.665056] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 855.731646] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 855.751860] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 855.798941] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 855.829582] EXT4-fs (loop0): re-mounted. Opts: (null) [ 855.900230] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 855.919058] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 855.979012] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.009125] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 856.062792] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.083513] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 856.148927] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.178320] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 856.241283] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.265535] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 856.319921] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.354161] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 856.409156] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.437670] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 856.510983] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.533246] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 856.591387] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.605705] EXT4-fs (loop0): re-mounted. Opts: (null) [ 856.678602] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.698497] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 856.758942] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.778738] EXT4-fs (loop0): re-mounted. Opts: (null) [ 856.824075] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.843042] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 856.914443] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 856.939655] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 857.007801] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.028413] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.102720] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.112616] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 857.190786] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.211739] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.268135] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.287837] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.341222] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.362096] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.418831] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.439186] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 857.510937] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.533074] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.574813] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.595469] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.640981] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.660335] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.748301] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.765645] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 857.818973] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.831701] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 857.893670] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.903129] EXT4-fs (loop0): re-mounted. Opts: (null) [ 857.948971] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 857.968243] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 858.031861] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.048186] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 858.110010] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.127710] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 858.199212] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.222622] EXT4-fs (loop0): re-mounted. Opts: (null) [ 858.289532] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.308108] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 858.381374] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.397728] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 858.451352] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.470553] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 858.520457] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.542166] EXT4-fs (loop0): re-mounted. Opts: (null) [ 858.600496] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.613299] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 858.685280] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.707651] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 858.778198] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.797855] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 858.859033] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.870786] EXT4-fs (loop0): re-mounted. Opts: (null) [ 858.930987] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 858.948487] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.027803] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.048132] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.110205] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.126819] EXT4-fs (loop0): re-mounted. Opts: (null) [ 859.190477] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.208200] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.259232] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.268878] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.338755] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.348344] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 859.420490] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.431034] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 859.489066] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.511551] EXT4-fs (loop0): re-mounted. Opts: (null) [ 859.568585] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.587687] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 859.648926] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.664242] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.725130] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.745307] EXT4-fs (loop0): re-mounted. Opts: (null) [ 859.778794] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.798481] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 859.868957] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.878462] EXT4-fs (loop0): re-mounted. Opts: (null) [ 859.952531] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 859.969531] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 860.028631] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.048117] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 860.099400] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.115895] EXT4-fs (loop0): re-mounted. Opts: (null) [ 860.173691] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.192745] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 860.248803] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.258929] EXT4-fs (loop0): re-mounted. Opts: (null) [ 860.339183] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.357783] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 860.418407] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.440967] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 860.498444] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.513862] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 860.579368] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.603624] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 860.668645] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.690112] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 860.753367] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 860.762762] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 860.807463] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 860.890256] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 860.967262] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 861.020432] EXT4-fs (loop0): re-mounted. Opts: (null) [ 861.081736] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.157305] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.231743] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.308243] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 861.367945] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 861.425003] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.507322] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.559677] EXT4-fs (loop0): re-mounted. Opts: (null) [ 861.615878] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.687386] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.768321] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 861.856305] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 861.897944] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 861.984344] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.086422] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 862.177482] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 862.242051] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 862.327380] EXT4-fs (loop0): re-mounted. Opts: (null) [ 862.392815] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.477950] EXT4-fs (loop0): re-mounted. Opts: (null) [ 862.557816] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.637262] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.691587] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.770993] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 862.847492] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 862.913742] EXT4-fs (loop0): re-mounted. Opts: (null) [ 862.967209] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 863.026920] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 863.089731] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 863.166662] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 863.247058] EXT4-fs (loop0): re-mounted. Opts: (null) [ 863.306866] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 863.389113] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 863.461127] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 863.527037] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 863.624399] EXT4-fs (loop0): re-mounted. Opts: (null) [ 863.673007] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 863.758098] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 863.827392] EXT4-fs (loop0): re-mounted. Opts: (null) [ 863.889511] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 863.967282] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 864.034237] EXT4-fs (loop0): re-mounted. Opts: (null) [ 864.099481] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 864.157936] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 864.208973] EXT4-fs (loop0): re-mounted. Opts: (null) [ 864.275926] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 864.338374] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 864.447062] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 864.534924] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 864.616838] EXT4-fs (loop0): re-mounted. Opts: (null) [ 864.686182] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 864.761766] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 864.857253] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 864.928296] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 864.997410] EXT4-fs (loop0): re-mounted. Opts: (null) [ 865.047060] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program [ 865.111019] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.197369] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.263860] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.332947] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 865.399378] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.471660] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.547160] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 865.631494] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 865.687036] EXT4-fs (loop0): re-mounted. Opts: (null) [ 865.769351] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.839353] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 865.894643] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 865.957230] EXT4-fs (loop0): re-mounted. Opts: (null) [ 866.017298] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 866.085911] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 866.140009] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.209344] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.286745] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.340484] EXT4-fs (loop0): re-mounted. Opts: (null) [ 866.414795] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 866.495952] EXT4-fs (loop0): re-mounted. Opts: (null) [ 866.567189] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 866.637374] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.700699] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.787245] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 866.860814] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program executing program executing program [ 866.922241] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.024084] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 867.103857] EXT4-fs (loop0): re-mounted. Opts: (null) [ 867.157096] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 867.236102] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 867.346000] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.403862] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.466499] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.546768] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 867.610648] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.677804] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 867.747105] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.807016] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.904270] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 867.952851] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.030823] EXT4-fs (loop0): re-mounted. Opts: (null) [ 868.104432] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.176629] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.235441] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.306816] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.400823] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.477073] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.535820] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.607019] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.712127] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.788416] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.846942] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 868.937061] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 868.996327] EXT4-fs (loop0): re-mounted. Opts: (null) [ 869.057014] EXT4-fs (loop0): re-mounted. Opts: (null) executing program executing program [ 869.134603] EXT4-fs (loop0): re-mounted. Opts: (null) executing program [ 869.200135] EXT4-fs (loop0): re-mounted. Opts: (null) [ 1147.724363] INFO: task syz-executor579:8117 blocked for more than 140 seconds. [ 1147.731925] Not tainted 4.19.211-syzkaller #0 [ 1147.737671] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1147.745811] syz-executor579 D27632 8117 8115 0x00000000 [ 1147.751442] Call Trace: [ 1147.754018] __schedule+0x887/0x2040 [ 1147.757777] ? io_schedule_timeout+0x140/0x140 [ 1147.762358] ? mark_held_locks+0xf0/0xf0 [ 1147.766473] schedule+0x8d/0x1b0 [ 1147.769832] schedule_timeout+0x92d/0xfe0 [ 1147.773960] ? kfree+0xcc/0x210 [ 1147.777269] ? ext4_xattr_destroy_cache+0x1b/0x30 [ 1147.782108] ? ext4_put_super+0x8d6/0x1010 [ 1147.786388] ? usleep_range+0x170/0x170 [ 1147.790356] ? deactivate_super+0x174/0x1a0 [ 1147.794721] ? wait_for_common+0x294/0x470 [ 1147.798957] ? mark_held_locks+0xa6/0xf0 [ 1147.802998] ? _raw_spin_unlock_irq+0x24/0x80 [ 1147.807541] wait_for_common+0x29c/0x470 [ 1147.811600] ? try_to_wake_up+0x733/0x1050 [ 1147.815888] ? bit_wait_io_timeout+0x100/0x100 [ 1147.820478] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1147.825628] ? wake_up_q+0xe0/0xe0 [ 1147.829168] kthread_stop+0x109/0x6b0 [ 1147.832954] ext4_put_super+0x93c/0x1010 [ 1147.837070] ? ext4_quota_write+0x530/0x530 [ 1147.841395] generic_shutdown_super+0x144/0x370 [ 1147.846111] kill_block_super+0x97/0xf0 [ 1147.850081] deactivate_locked_super+0x94/0x160 [ 1147.854779] deactivate_super+0x174/0x1a0 [ 1147.858946] ? deactivate_locked_super+0x160/0x160 [ 1147.863873] ? dput+0x31/0x640 [ 1147.867113] cleanup_mnt+0x1a8/0x290 [ 1147.870847] task_work_run+0x148/0x1c0 [ 1147.874775] exit_to_usermode_loop+0x251/0x2a0 [ 1147.879355] do_syscall_64+0x538/0x620 [ 1147.883236] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1147.888491] RIP: 0033:0x7f4f40d1f3e7 [ 1147.892199] Code: Bad RIP value. [ 1147.895592] RSP: 002b:00007ffec274c618 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 1147.903298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4f40d1f3e7 [ 1147.910628] RDX: 00007ffec274c6db RSI: 000000000000000a RDI: 00007ffec274c6d0 [ 1147.917943] RBP: 00007ffec274c6d0 R08: 00000000ffffffff R09: 00007ffec274c4b0 [ 1147.925288] R10: 000055555734a683 R11: 0000000000000206 R12: 00007ffec274d740 [ 1147.932556] R13: 000055555734a5f0 R14: 00007ffec274c640 R15: 00000000000000ec [ 1147.939887] [ 1147.939887] Showing all locks held in the system: [ 1147.946272] 1 lock held by khungtaskd/1570: [ 1147.950573] #0: 0000000034e37715 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 1147.959656] 1 lock held by in:imklog/7814: [ 1147.963879] #0: 00000000fd65db30 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 1147.971914] 1 lock held by syz-executor579/8117: [ 1147.976707] #0: 00000000fb7a01c7 (&type->s_umount_key#34){++++}, at: deactivate_super+0x16c/0x1a0 [ 1147.985869] [ 1147.987486] ============================================= [ 1147.987486] [ 1147.994545] NMI backtrace for cpu 0 [ 1147.998162] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 1148.005590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1148.014920] Call Trace: [ 1148.017491] dump_stack+0x1fc/0x2ef [ 1148.021104] nmi_cpu_backtrace.cold+0x63/0xa2 [ 1148.025580] ? lapic_can_unplug_cpu+0x80/0x80 [ 1148.030056] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 1148.036603] watchdog+0x991/0xe60 [ 1148.040039] ? reset_hung_task_detector+0x30/0x30 [ 1148.044863] kthread+0x33f/0x460 [ 1148.048209] ? kthread_park+0x180/0x180 [ 1148.052170] ret_from_fork+0x24/0x30 [ 1148.055974] Sending NMI from CPU 0 to CPUs 1: [ 1148.061012] NMI backtrace for cpu 1 [ 1148.061018] CPU: 1 PID: 4692 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 1148.061024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1148.061028] RIP: 0010:__lock_acquire+0x3d9/0x3ff0 [ 1148.061038] Code: 85 46 28 00 00 48 8b 84 24 d8 01 00 00 49 8d 7a 10 48 89 fa 48 c1 ea 03 49 89 42 08 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 <0f> 85 43 28 00 00 48 b8 00 00 00 00 00 fc ff df 4d 89 72 10 4d 8d [ 1148.061042] RSP: 0018:ffff8880a0dcfa38 EFLAGS: 00000046 [ 1148.061050] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000002 [ 1148.061055] RDX: 1ffff110141b89c8 RSI: 1ffff110141b89c5 RDI: ffff8880a0dc4e40 [ 1148.061060] RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000001 [ 1148.061065] R10: ffff8880a0dc4e30 R11: 0000000000000000 R12: 0000000000000001 [ 1148.061070] R13: ffff8880a0dc4580 R14: ffffffff8a462a78 R15: 0000000000000001 [ 1148.061075] FS: 00007fd5293d48c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 1148.061080] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1148.061084] CR2: 00007fd5267b7000 CR3: 00000000a1009000 CR4: 00000000003406e0 [ 1148.061089] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1148.061094] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1148.061097] Call Trace: [ 1148.061100] ? is_bpf_text_address+0xfc/0x1b0 [ 1148.061104] ? kernel_text_address+0xbd/0xf0 [ 1148.061107] ? mark_held_locks+0xf0/0xf0 [ 1148.061111] ? __lock_acquire+0x6de/0x3ff0 [ 1148.061115] ? trace_hardirqs_off+0x64/0x200 [ 1148.061118] ? __kasan_slab_free+0x186/0x1f0 [ 1148.061122] ? mark_held_locks+0xf0/0xf0 [ 1148.061125] ? kfree+0xcc/0x210 [ 1148.061129] ? apparmor_file_free_security+0x9a/0xd0 [ 1148.061132] ? security_file_free+0x3e/0x70 [ 1148.061135] lock_acquire+0x170/0x3c0 [ 1148.061139] ? __debug_object_init+0x145/0x9b0 [ 1148.061142] ? do_raw_spin_lock+0xcb/0x220 [ 1148.061146] _raw_spin_lock+0x2a/0x40 [ 1148.061149] ? __debug_object_init+0x145/0x9b0 [ 1148.061153] __debug_object_init+0x145/0x9b0 [ 1148.061156] ? lock_downgrade+0x720/0x720 [ 1148.061160] ? debug_object_destroy+0x240/0x240 [ 1148.061164] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1148.061168] debug_object_activate+0x382/0x450 [ 1148.061172] ? debug_object_assert_init+0x2e0/0x2e0 [ 1148.061175] ? kfree+0x110/0x210 [ 1148.061179] ? percpu_counter_add_batch+0x126/0x180 [ 1148.061182] ? get_max_files+0x10/0x10 [ 1148.061186] __call_rcu.constprop.0+0x31/0x7f0 [ 1148.061190] ? _raw_spin_unlock_irq+0x24/0x80 [ 1148.061193] task_work_run+0x148/0x1c0 [ 1148.061197] exit_to_usermode_loop+0x251/0x2a0 [ 1148.061201] do_syscall_64+0x538/0x620 [ 1148.061205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1148.061208] RIP: 0033:0x7fd528963840 [ 1148.061219] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 1148.061223] RSP: 002b:00007ffda68ee018 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1148.061232] RAX: fffffffffffffffe RBX: 00007ffda68ee320 RCX: 00007fd528963840 [ 1148.061237] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055aebf7cb390 [ 1148.061242] RBP: 000000000000000d R08: 000000000000c0ff R09: 00000000ffffffff [ 1148.061247] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 1148.061252] R13: 000055aebf7bf040 R14: 00007ffda68ee2e0 R15: 000055aebf7cace0 [ 1148.061817] Kernel panic - not syncing: hung_task: blocked tasks [ 1148.388560] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 1148.395983] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1148.405399] Call Trace: [ 1148.407972] dump_stack+0x1fc/0x2ef [ 1148.411581] panic+0x26a/0x50e [ 1148.414841] ? __warn_printk+0xf3/0xf3 [ 1148.418706] ? lapic_can_unplug_cpu+0x80/0x80 [ 1148.423178] ? ___preempt_schedule+0x16/0x18 [ 1148.427565] ? watchdog+0x991/0xe60 [ 1148.431169] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 1148.436603] watchdog+0x9a2/0xe60 [ 1148.440038] ? reset_hung_task_detector+0x30/0x30 [ 1148.444862] kthread+0x33f/0x460 [ 1148.448205] ? kthread_park+0x180/0x180 [ 1148.452162] ret_from_fork+0x24/0x30 [ 1148.456124] Kernel Offset: disabled [ 1148.459753] Rebooting in 86400 seconds..