INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.47' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.699195] IPVS: ftp: loaded support on port[0] = 21 [ 27.730476] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 27.738973] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 27.754571] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 27.849449] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 27.857947] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 27.872373] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 27.937507] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 27.946010] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 27.960422] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.020760] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.029269] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.044274] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 28.108648] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.117160] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.133534] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.199973] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.208447] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.222645] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.289871] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.298383] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.312960] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.376089] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.384601] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.400743] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 28.473672] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.482192] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.496856] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 28.561416] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.569924] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.584212] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.647537] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.656074] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.671336] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.738794] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.747270] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.762202] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 28.827822] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.836343] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.850681] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 28.916750] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 28.925264] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 28.940821] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 28.998715] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.007220] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.021622] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 29.086948] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.095473] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.109994] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 29.175538] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.184094] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.198636] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 29.262613] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.271139] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.285735] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 29.347948] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.356445] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.371519] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 29.436882] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.445386] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.460070] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 29.515208] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.523689] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.538541] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 29.614394] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.622997] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.637674] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 29.694874] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.703355] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.717649] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 29.781881] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.790354] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.804741] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 29.870145] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.878640] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.893493] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 29.953613] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 29.962107] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 29.976721] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 30.038721] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.047214] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.062477] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 30.123253] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.131747] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.145967] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.210966] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.219479] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.235208] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.300926] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.309421] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.324431] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.392301] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.400808] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.415985] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 30.477949] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.486571] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.502235] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 30.561175] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.569676] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.584468] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.650889] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.659383] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.674220] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.738233] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.746697] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.761460] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 30.826086] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.834590] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.849325] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 30.905622] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 30.914113] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 30.929239] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 30.999829] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.008319] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.023498] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.085289] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.093785] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.108550] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 31.177784] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.186289] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.201501] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.261077] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.269574] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.283787] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 31.339298] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.347791] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.362009] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.424760] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.433283] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.448619] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.518687] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.527226] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.543391] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.621703] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.630193] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.645070] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.710605] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.719135] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.733570] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.802630] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.811257] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.828576] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 31.900511] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.909164] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 31.924605] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 31.989827] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 31.998320] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.013577] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.075124] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.083650] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.097890] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 32.160690] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.169189] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.185070] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.249176] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.257681] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.272584] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.334597] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.343091] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.357585] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.425816] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.434349] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.449655] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.512176] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.520656] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.535342] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program executing program [ 32.599566] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.608234] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.623303] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 32.681360] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.689986] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.705865] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.769408] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.777919] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.792389] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.860378] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.868933] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.883461] EXT4-fs (loop0): mounted filesystem without journal. Opts: executing program [ 32.949239] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended [ 32.957739] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:774: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 32.972596] EXT4-fs (loop0): mounted filesystem without journal. Opts: [ 33.001558] WARNING: CPU: 0 PID: 5126 at fs/ext4/ext4.h:2690 ext4_superblock_csum_set+0x2b8/0x350 [ 33.010598] Kernel panic - not syncing: panic_on_warn set ... [ 33.010598] [ 33.017952] CPU: 0 PID: 5126 Comm: syzkaller957684 Not tainted 4.16.0+ #10 [ 33.024951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.034280] Call Trace: [ 33.036845] dump_stack+0x194/0x24d [ 33.040456] ? arch_local_irq_restore+0x53/0x53 [ 33.045107] ? vsnprintf+0x1ed/0x1900 [ 33.048881] panic+0x1e4/0x41c [ 33.052048] ? refcount_error_report+0x214/0x214 [ 33.056777] ? show_regs_print_info+0x18/0x18 [ 33.061249] ? __warn+0x1c1/0x200 [ 33.064676] ? ext4_superblock_csum_set+0x2b8/0x350 [ 33.069759] __warn+0x1dc/0x200 [ 33.073021] ? ext4_superblock_csum_set+0x2b8/0x350 [ 33.078027] report_bug+0x1f4/0x2b0 [ 33.081638] fixup_bug.part.10+0x37/0x80 [ 33.085669] do_error_trap+0x2d7/0x3e0 [ 33.089528] ? math_error+0x400/0x400 [ 33.093311] ? print_irqtrace_events+0x270/0x270 [ 33.098055] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.102872] do_invalid_op+0x1b/0x20 [ 33.106556] invalid_op+0x1b/0x40 [ 33.109984] RIP: 0010:ext4_superblock_csum_set+0x2b8/0x350 [ 33.115582] RSP: 0000:ffff8801b3e97868 EFLAGS: 00010293 [ 33.120925] RAX: ffff8801bf85e1c0 RBX: 1ffff100367d2f0d RCX: ffffffff81fd4308 [ 33.128170] RDX: 0000000000000000 RSI: ffff8801bea41400 RDI: ffff8801bea41464 [ 33.135413] RBP: ffff8801b3e978f0 R08: 1ffff100367d2ede R09: 0000000000000000 [ 33.142657] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c28a46c0 [ 33.149898] R13: ffff8801b3e978c8 R14: ffff8801bea41400 R15: ffff8801c28a4c40 [ 33.157148] ? ext4_superblock_csum_set+0x2b8/0x350 [ 33.162137] ? ext4_superblock_csum_set+0x2b8/0x350 [ 33.167126] ? ext4_group_desc_csum+0xf50/0xf50 [ 33.171767] ? __percpu_counter_sum+0x127/0x190 [ 33.176407] ? find_next_bit+0xcc/0x100 [ 33.180357] ext4_commit_super+0x609/0xb60 [ 33.184570] ? rcu_read_lock_sched_held+0x108/0x120 [ 33.189560] ext4_put_super+0x25b/0xf50 [ 33.193507] ? insert_inode_locked4+0x530/0x530 [ 33.198148] ? ext4_quota_write+0x570/0x570 [ 33.202441] ? cgroup_writeback_umount+0xb3/0xf0 [ 33.207167] ? sync_inode_metadata+0x160/0x160 [ 33.211721] ? mark_held_locks+0xaf/0x100 [ 33.215851] ? ext4_quota_write+0x570/0x570 [ 33.220146] generic_shutdown_super+0x1b5/0x540 [ 33.224790] ? destroy_super_rcu+0x200/0x200 [ 33.229181] ? unregister_shrinker+0x22c/0x3a0 [ 33.233737] ? __might_sleep+0x95/0x190 [ 33.237685] ? perf_trace_mm_vmscan_writepage+0x790/0x790 [ 33.243192] ? down_write+0x87/0x120 [ 33.246889] kill_block_super+0x9b/0xf0 [ 33.250843] deactivate_locked_super+0x88/0xd0 [ 33.255396] deactivate_super+0x141/0x1b0 [ 33.259525] ? __sb_start_write+0x2a0/0x2a0 [ 33.263825] cleanup_mnt+0xb2/0x150 [ 33.267427] __cleanup_mnt+0x16/0x20 [ 33.271115] task_work_run+0x199/0x270 [ 33.274996] ? task_work_cancel+0x210/0x210 [ 33.279300] ? exit_to_usermode_loop+0x8c/0x2f0 [ 33.283943] exit_to_usermode_loop+0x275/0x2f0 [ 33.288497] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.294008] ? trace_hardirqs_on+0xd/0x10 [ 33.298139] do_syscall_64+0x6ec/0x940 [ 33.302004] ? vmalloc_sync_all+0x30/0x30 [ 33.306129] ? _raw_spin_unlock_irq+0x27/0x70 [ 33.310599] ? finish_task_switch+0x1c1/0x7e0 [ 33.315066] ? syscall_return_slowpath+0x550/0x550 [ 33.319967] ? syscall_return_slowpath+0x2ac/0x550 [ 33.324881] ? prepare_exit_to_usermode+0x350/0x350 [ 33.329888] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 33.335229] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.340057] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.345225] RIP: 0033:0x449d2a [ 33.348389] RSP: 002b:00007f07d6e22cf8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.356068] RAX: ffffffffffffffec RBX: 0000000020000100 RCX: 0000000000449d2a [ 33.363308] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f07d6e22d10 [ 33.370556] RBP: 0000000000000012 R08: 0000000020012f00 R09: 000000000000000a [ 33.377800] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000006 [ 33.385046] R13: 0000000000000007 R14: 0000000000000000 R15: 0000000000000012 [ 33.392978] Dumping ftrace buffer: [ 33.396635] (ftrace buffer empty) [ 33.400317] Kernel Offset: disabled [ 33.403917] Rebooting in 86400 seconds..