[  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 '10.128.0.230' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.537453] audit: type=1400 audit(1600884575.761:8): avc:  denied  { execmem } for  pid=6360 comm="syz-executor985" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   32.559225] IPVS: ftp: loaded support on port[0] = 21
[   32.597904] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[   32.607183] Quota error (device loop0): qtree_write_dquot: Error -2147481216 occurred while creating quota
[   32.631178] BUG: unable to handle kernel paging request at fffffbfff000014f
[   32.638742] IP: dqput.part.0+0x9d/0x750
[   32.642782] PGD 21ffec067 P4D 21ffec067 PUD 21ffeb067 PMD 0 
[   32.648564] Oops: 0000 [#1] PREEMPT SMP KASAN
[   32.653035] Modules linked in:
[   32.656208] CPU: 0 PID: 6361 Comm: syz-executor985 Not tainted 4.14.198-syzkaller #0
[   32.664077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.673422] task: ffff88808bf1a400 task.stack: ffff88808c7c0000
[   32.679469] RIP: 0010:dqput.part.0+0x9d/0x750
[   32.683937] RSP: 0018:ffff88808c7c7980 EFLAGS: 00010282
[   32.689276] RAX: dffffc0000000000 RBX: ffffffff80000980 RCX: 0000000000005ad2
[   32.696535] RDX: 1ffffffff0f82502 RSI: 0000000000000001 RDI: ffffffff87c12804
[   32.703800] RBP: dffffc0000000000 R08: ffffffff8a0aa010 R09: 00000000000401c9
[   32.711045] R10: ffff88808bf1acb0 R11: ffff88808bf1a400 R12: 0000000000000003
[   32.718291] R13: fffffbfff000014f R14: ffffffff80000a98 R15: ffffffff80000a78
[   32.725555] FS:  0000000001448880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[   32.734034] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.739898] CR2: fffffbfff000014f CR3: 0000000007c6a000 CR4: 00000000001406f0
[   32.747169] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.754421] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.761683] Call Trace:
[   32.764268]  __dquot_drop+0x193/0x250
[   32.768047]  ? dquot_scan_active+0x290/0x290
[   32.772449]  ? _raw_spin_unlock_irq+0x24/0x80
[   32.776922]  dquot_drop+0x13e/0x190
[   32.780525]  ext4_clear_inode+0x31/0x1d0
[   32.784580]  ext4_evict_inode+0x1f1/0x1500
[   32.788810]  ? ext4_journalled_write_end+0x1140/0x1140
[   32.794078]  ? ext4_journalled_write_end+0x1140/0x1140
[   32.799341]  evict+0x2c8/0x700
[   32.803388]  ? lock_acquire+0x170/0x3f0
[   32.807339]  dispose_list+0x109/0x1e0
[   32.811115]  evict_inodes+0x2cd/0x3a0
[   32.814892]  ? dispose_list+0x1e0/0x1e0
[   32.818842]  ? fsnotify_unmount_inodes+0x1b4/0x210
[   32.823749]  generic_shutdown_super+0xb3/0x370
[   32.828307]  kill_block_super+0x95/0xe0
[   32.832256]  deactivate_locked_super+0x6c/0xd0
[   32.836814]  deactivate_super+0x7f/0xa0
[   32.840762]  cleanup_mnt+0x186/0x2c0
[   32.844454]  task_work_run+0x11f/0x190
[   32.848319]  do_exit+0xa08/0x27f0
[   32.851751]  ? __do_page_fault+0x5a0/0xb50
[   32.855975]  ? mm_update_next_owner+0x5b0/0x5b0
[   32.860978]  ? lock_downgrade+0x740/0x740
[   32.865107]  do_group_exit+0x100/0x2e0
[   32.868979]  SyS_exit_group+0x19/0x20
[   32.872755]  ? do_group_exit+0x2e0/0x2e0
[   32.876791]  do_syscall_64+0x1d5/0x640
[   32.880677]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   32.885859] RIP: 0033:0x443918
[   32.889027] RSP: 002b:00007ffd42a6a6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   32.896721] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000443918
[   32.903973] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   32.911221] RBP: 00000000004c3e30 R08: 00000000000000e7 R09: ffffffffffffffd0
[   32.918490] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[   32.925743] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000
[   32.932998] Code: 8d b3 18 01 00 00 49 c1 ed 03 41 83 e4 07 49 01 ed 41 83 c4 03 e8 a4 82 70 01 e8 7f 82 b7 ff 48 c7 c7 00 28 c1 87 e8 13 78 b1 04 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 cf 04 00 00 8b 83 f8 
[   32.952091] RIP: dqput.part.0+0x9d/0x750 RSP: ffff88808c7c7980
[   32.958035] CR2: fffffbfff000014f
[   32.961466] ---[ end trace 05838537344d2dac ]---
[   32.966194] Kernel panic - not syncing: Fatal exception
[   32.972790] Kernel Offset: disabled
[   32.976413] Rebooting in 86400 seconds..