[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.773272] audit: type=1400 audit(1600178065.092:8): avc:  denied  { execmem } for  pid=6368 comm="syz-executor605" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   32.775344] kasan: CONFIG_KASAN_INLINE enabled
[   32.798695] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   32.806179] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   32.812494] Modules linked in:
[   32.815734] CPU: 0 PID: 6368 Comm: syz-executor605 Not tainted 4.14.198-syzkaller #0
[   32.823679] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.833401] task: ffff888097864440 task.stack: ffff888097c40000
[   32.839777] RIP: 0010:rb_erase+0x29/0x1290
[   32.844432] RSP: 0018:ffff888097c47a68 EFLAGS: 00010292
[   32.849943] RAX: dffffc0000000000 RBX: ffff88808efde1f0 RCX: 1ffff11012f88f27
[   32.857203] RDX: 0000000000000001 RSI: ffffffff8a67afa0 RDI: 0000000000000008
[   32.864637] RBP: 0000000000000000 R08: ffffffff8a1170fc R09: 0000000000001e3c
[   32.872027] R10: 0000000000000001 R11: ffff888097864440 R12: 0000000000000000
[   32.879378] R13: dffffc0000000000 R14: ffff88808efe73f8 R15: ffffffff8a67afa0
[   32.886757] FS:  000000000145c880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[   32.895057] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.900926] CR2: 0000000020000080 CR3: 00000000a15a0000 CR4: 00000000001406f0
[   32.908662] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.916015] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.923365] Call Trace:
[   32.926359]  integrity_inode_free+0x119/0x300
[   32.930851]  security_inode_free+0x14/0x80
[   32.935215]  __destroy_inode+0x1e8/0x4d0
[   32.939300]  destroy_inode+0x49/0x110
[   32.943217]  iput+0x458/0x7e0
[   32.946478]  ? ext4_mark_dquot_dirty+0x190/0x190
[   32.951368]  ext4_ioctl+0x16c5/0x3870
[   32.955203]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   32.960890]  ? putname+0xcd/0x110
[   32.964771]  ? do_sys_open+0x203/0x410
[   32.968702]  ? do_syscall_64+0x1d5/0x640
[   32.972759]  ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   32.978288]  ? path_lookupat+0x780/0x780
[   32.982932]  ? debug_check_no_obj_freed+0x2c0/0x674
[   32.988170]  ? lock_acquire+0x170/0x3f0
[   32.992262]  ? lock_downgrade+0x740/0x740
[   32.996666]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   33.001813]  ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[   33.007139]  do_vfs_ioctl+0x75a/0xff0
[   33.011012]  ? selinux_inode_setxattr+0x730/0x730
[   33.016058]  ? ioctl_preallocate+0x1a0/0x1a0
[   33.020544]  ? kmem_cache_free+0x23a/0x2b0
[   33.024766]  ? putname+0xcd/0x110
[   33.028349]  ? do_sys_open+0x208/0x410
[   33.032477]  ? security_file_ioctl+0x83/0xb0
[   33.037072]  SyS_ioctl+0x7f/0xb0
[   33.040518]  ? do_vfs_ioctl+0xff0/0xff0
[   33.044530]  do_syscall_64+0x1d5/0x640
[   33.048410]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   33.053726] RIP: 0033:0x440229
[   33.057047] RSP: 002b:00007fff8f8218a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   33.065079] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440229
[   33.072337] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[   33.079594] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   33.086976] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a30
[   33.094532] R13: 0000000000401ac0 R14: 0000000000000000 R15: 0000000000000000
[   33.101965] Code: ff ff 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 41 54 49 89 fc 48 83 c7 08 48 89 fa 55 48 c1 ea 03 53 48 83 ec 18 <80> 3c 02 00 0f 85 f2 0c 00 00 49 8d 7c 24 10 4d 8b 74 24 08 48 
[   33.121266] RIP: rb_erase+0x29/0x1290 RSP: ffff888097c47a68
[   33.127162] ---[ end trace 76a5eb4b516d26e1 ]---
[   33.131946] Kernel panic - not syncing: Fatal exception
[   33.139122] Kernel Offset: disabled
[   33.143018] Rebooting in 86400 seconds..