[  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 '10.128.0.170' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.865538] IPVS: ftp: loaded support on port[0] = 21
[   31.904260] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[   31.914840] Quota error (device loop0): qtree_write_dquot: Error -2054730252 occurred while creating quota
[   31.925874] EXT4-fs error (device loop0): ext4_mb_generate_buddy:754: group 0, block bitmap and bg descriptor inconsistent: 32768 vs 25 free clusters
[   31.941359] Quota error (device loop0): write_blk: dquota write failed
[   31.948274] Quota error (device loop0): qtree_write_dquot: Error -28 occurred while creating quota
[   31.962377] kasan: CONFIG_KASAN_INLINE enabled
[   31.967169] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   31.974725] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   31.980953] Modules linked in:
[   31.984148] CPU: 1 PID: 7997 Comm: syz-executor422 Not tainted 4.14.212-syzkaller #0
[   31.994013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.003464] task: ffff8880b2928300 task.stack: ffff888095560000
[   32.009516] RIP: 0010:dqput.part.0+0x198/0x750
[   32.014095] RSP: 0018:ffff888095567980 EFLAGS: 00010a03
[   32.019439] RAX: e8a8eb082444b60f RBX: ffffffff85874df4 RCX: 0000000000000000
[   32.026795] RDX: 1d151d61048896c8 RSI: 0000000000000002 RDI: e8a8eb082444b647
[   32.034043] RBP: dffffc0000000000 R08: ffffffff8b99a738 R09: 0000000000000001
[   32.041307] R10: 0000000000000000 R11: ffff8880b2928300 R12: 0000000000000007
[   32.048557] R13: fffffbfff0b0e9dd R14: ffffffff85874f0c R15: ffffffff85874eec
[   32.055804] FS:  0000000001add880(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[   32.064011] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.069957] CR2: 00000000004c4008 CR3: 0000000008e6a000 CR4: 00000000001406e0
[   32.077228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.084476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.091746] Call Trace:
[   32.094316]  ? logi_dj_raw_event+0x674/0x710
[   32.098705]  ? logi_dj_raw_event+0x574/0x710
[   32.103111]  __dquot_drop+0x193/0x250
[   32.106905]  ? dquot_scan_active+0x290/0x290
[   32.111388]  ? logi_dj_raw_event+0x574/0x710
[   32.115792]  ? _raw_spin_unlock_irq+0x24/0x80
[   32.120295]  dquot_drop+0x13e/0x190
[   32.123930]  ext4_clear_inode+0x31/0x1d0
[   32.128012]  ext4_evict_inode+0x1f1/0x1500
[   32.132254]  ? ext4_journalled_write_end+0x1140/0x1140
[   32.137521]  ? ext4_journalled_write_end+0x1140/0x1140
[   32.143014]  evict+0x2c8/0x700
[   32.146210]  ? lock_acquire+0x170/0x3f0
[   32.150180]  dispose_list+0x109/0x1e0
[   32.154350]  evict_inodes+0x2cd/0x3a0
[   32.158137]  ? dispose_list+0x1e0/0x1e0
[   32.162095]  ? fsnotify_unmount_inodes+0x1b4/0x210
[   32.167031]  generic_shutdown_super+0xb3/0x370
[   32.171619]  kill_block_super+0x95/0xe0
[   32.175590]  deactivate_locked_super+0x6c/0xd0
[   32.180153]  deactivate_super+0x7f/0xa0
[   32.184108]  cleanup_mnt+0x186/0x2c0
[   32.187804]  task_work_run+0x11f/0x190
[   32.191724]  do_exit+0xa44/0x2850
[   32.195159]  ? __do_page_fault+0x571/0xad0
[   32.199376]  ? mm_update_next_owner+0x5b0/0x5b0
[   32.204110]  ? lock_downgrade+0x740/0x740
[   32.208237]  do_group_exit+0x100/0x2e0
[   32.212103]  SyS_exit_group+0x19/0x20
[   32.215895]  ? do_group_exit+0x2e0/0x2e0
[   32.219932]  do_syscall_64+0x1d5/0x640
[   32.223801]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   32.228975] RIP: 0033:0x443a28
[   32.232191] RSP: 002b:00007fffb5d640a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   32.239902] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000443a28
[   32.247153] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   32.254416] RBP: 00000000004c3fd0 R08: 00000000000000e7 R09: ffffffffffffffd0
[   32.261663] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[   32.268912] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000
[   32.276163] Code: 48 8d 83 00 01 00 00 48 89 04 24 48 c1 e8 03 80 3c 28 00 0f 85 54 04 00 00 48 8b 83 00 01 00 00 48 8d 78 38 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 24 04 00 00 48 8b 40 38 48 89 c2 48 c1 ea 03 
[   32.295264] RIP: dqput.part.0+0x198/0x750 RSP: ffff888095567980
[   32.301911] ---[ end trace 98b1817e42190939 ]---
[   32.306671] Kernel panic - not syncing: Fatal exception
[   32.312755] Kernel Offset: disabled
[   32.316498] Rebooting in 86400 seconds..