[info] Using makefile-style concurrent boot in runlevel 2.
[   23.195405] audit: type=1800 audit(1537917504.659:21): pid=5399 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[   23.230443] audit: type=1800 audit(1537917504.669:22): pid=5399 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0
[....] 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 '10.128.0.34' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.952265] kasan: CONFIG_KASAN_INLINE enabled
[   32.956917] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   32.964321] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   32.970558] CPU: 1 PID: 5553 Comm: syz-executor715 Not tainted 4.19.0-rc5-next-20180925+ #80
[   32.979112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.988456] RIP: 0010:rb_erase+0x306/0x3710
[   32.992765] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00
[   33.011695] RSP: 0018:ffff8801d7e86918 EFLAGS: 00010202
[   33.017039] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   33.024289] RDX: 1ffff1003afd0d2b RSI: ffffffff8b5a4340 RDI: 0000000000000008
[   33.031543] RBP: ffff8801d7e87320 R08: dffffc0000000000 R09: fffffbfff135d930
[   33.038794] R10: fffffbfff135d930 R11: ffffffff89aec983 R12: ffff8801b6f6f970
[   33.046046] R13: dffffc0000000000 R14: ffff8801d7e872f8 R15: ffff8801d7e87438
[   33.053299] FS:  00000000017b3880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
[   33.061505] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.067365] CR2: 0000000020000700 CR3: 00000001d96fe000 CR4: 00000000001406e0
[   33.074634] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.081889] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.089318] Call Trace:
[   33.091893]  ? lockdep_on+0x50/0x50
[   33.095504]  ? rb_insert_color+0x1460/0x1460
[   33.099900]  ? noop_count+0x40/0x40
[   33.103510]  ? lock_pin_lock+0x350/0x350
[   33.107563]  ? noop_count+0x40/0x40
[   33.111180]  ? kasan_check_read+0x11/0x20
[   33.115309]  ? noop_count+0x40/0x40
[   33.118918]  ? noop_count+0x40/0x40
[   33.122524]  ? lock_pin_lock+0x350/0x350
[   33.126568]  ? mark_held_locks+0x130/0x130
[   33.130784]  ? check_usage_forwards+0x3e0/0x3e0
[   33.135434]  ? __bfs+0x385/0x7a0
[   33.138782]  ? noop_count+0x40/0x40
[   33.142393]  ? check_usage+0x1a9/0x790
[   33.146259]  ? lock_pin_lock+0x350/0x350
[   33.150307]  ? check_usage_forwards+0x3e0/0x3e0
[   33.154957]  ? __bfs+0x385/0x7a0
[   33.158323]  ? __lock_acquire+0x7ec/0x4ec0
[   33.162549]  ? lockdep_on+0x50/0x50
[   33.166154]  ? lock_pin_lock+0x350/0x350
[   33.170209]  ? mark_held_locks+0x130/0x130
[   33.174428]  ? kasan_check_read+0x11/0x20
[   33.178559]  ? __lock_acquire+0x2881/0x4ec0
[   33.182867]  ? mark_held_locks+0x130/0x130
[   33.187083]  ? print_usage_bug+0xc0/0xc0
[   33.191129]  ? _raw_spin_unlock+0x2c/0x50
[   33.195263]  ? graph_lock+0x170/0x170
[   33.199045]  ? ext4_exit_mballoc+0xc0/0xc0
[   33.203264]  ? __lock_acquire+0x7ec/0x4ec0
[   33.207479]  ? find_held_lock+0x36/0x1c0
[   33.211526]  ? mark_held_locks+0x130/0x130
[   33.215754]  ? lock_downgrade+0x900/0x900
[   33.219882]  ? ext4_es_scan+0x950/0x950
[   33.223842]  ? do_raw_write_trylock+0x1c0/0x1c0
[   33.228495]  ? kasan_check_write+0x14/0x20
[   33.232730]  ? lock_acquire+0x1ed/0x520
[   33.236689]  ? integrity_inode_free+0x77/0x320
[   33.241255]  ? ext4_es_remove_extent+0x14c/0x4f0
[   33.245994]  ? lock_release+0x970/0x970
[   33.249952]  ? kasan_check_write+0x14/0x20
[   33.254171]  ? do_raw_write_lock+0xbd/0x1b0
[   33.258475]  integrity_inode_free+0x12f/0x320
[   33.262953]  security_inode_free+0x19/0x90
[   33.267174]  __destroy_inode+0x328/0x820
[   33.271247]  ? generic_update_time+0x450/0x450
[   33.275810]  ? evict+0x5d8/0x980
[   33.279161]  ? lock_downgrade+0x900/0x900
[   33.283299]  ? __inode_wait_for_writeback+0x2cf/0x380
[   33.288476]  destroy_inode+0xda/0x200
[   33.292259]  ? __destroy_inode+0x820/0x820
[   33.296472]  ? kasan_check_write+0x14/0x20
[   33.300688]  ? do_raw_spin_lock+0xc1/0x200
[   33.304906]  evict+0x5e0/0x980
[   33.308084]  ? destroy_inode+0x200/0x200
[   33.312127]  ? iput+0x66c/0xa90
[   33.315387]  ? lock_downgrade+0x900/0x900
[   33.319517]  ? kasan_check_read+0x11/0x20
[   33.323667]  ? do_raw_spin_trylock+0x1c0/0x1c0
[   33.328240]  ? lock_downgrade+0x900/0x900
[   33.332369]  iput+0x674/0xa90
[   33.335461]  ? inode_add_lru+0x2a0/0x2a0
[   33.339503]  ? up_write+0x7b/0x220
[   33.343057]  ? down_write_nested+0x130/0x130
[   33.347449]  ? down_write_nested+0x130/0x130
[   33.351843]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.357360]  ? check_preemption_disabled+0x48/0x200
[   33.362361]  ext4_ioctl+0x236a/0x4210
[   33.366142]  ? ext4_ioctl_group_add+0x560/0x560
[   33.370796]  ? rcu_read_unlock_special+0x1c0/0x1c0
[   33.375704]  ? kasan_check_read+0x11/0x20
[   33.379833]  ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170
[   33.385090]  ? rcu_softirq_qs+0x20/0x20
[   33.389046]  ? rcu_softirq_qs+0x20/0x20
[   33.393004]  ? unwind_dump+0x190/0x190
[   33.396878]  ? is_bpf_text_address+0xd3/0x170
[   33.401359]  ? kernel_text_address+0x79/0xf0
[   33.405749]  ? __kernel_text_address+0xd/0x40
[   33.410245]  ? unwind_get_return_address+0x61/0xa0
[   33.415158]  ? __save_stack_trace+0x8d/0xf0
[   33.419469]  ? save_stack+0xa9/0xd0
[   33.423086]  ? save_stack+0x43/0xd0
[   33.426695]  ? __kasan_slab_free+0x102/0x150
[   33.431087]  ? kasan_slab_free+0xe/0x10
[   33.435042]  ? kmem_cache_free+0x83/0x290
[   33.439175]  ? putname+0xf2/0x130
[   33.442610]  ? do_sys_open+0x54d/0x700
[   33.446474]  ? __x64_sys_open+0x7e/0xc0
[   33.450430]  ? do_syscall_64+0x1b9/0x820
[   33.454471]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   33.459826]  ? trace_hardirqs_off+0xb8/0x310
[   33.464216]  ? kasan_check_read+0x11/0x20
[   33.468346]  ? do_raw_spin_unlock+0xa7/0x2f0
[   33.472737]  ? trace_hardirqs_on_caller+0x310/0x310
[   33.477741]  ? kasan_check_write+0x14/0x20
[   33.481968]  ? trace_hardirqs_off+0xb8/0x310
[   33.486360]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.491882]  ? ext4_ioctl_group_add+0x560/0x560
[   33.496531]  do_vfs_ioctl+0x1de/0x1720
[   33.500403]  ? rcu_lockdep_current_cpu_online+0x1a4/0x210
[   33.505918]  ? ioctl_preallocate+0x300/0x300
[   33.510308]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   33.515823]  ? __fget_light+0x2e9/0x430
[   33.519779]  ? fget_raw+0x20/0x20
[   33.523219]  ? rcu_read_lock_sched_held+0x108/0x120
[   33.528218]  ? kmem_cache_free+0x24f/0x290
[   33.532432]  ? putname+0xf7/0x130
[   33.535864]  ? do_syscall_64+0x9a/0x820
[   33.539821]  ? do_syscall_64+0x9a/0x820
[   33.543781]  ? lockdep_hardirqs_on+0x421/0x5c0
[   33.548345]  ? security_file_ioctl+0x94/0xc0
[   33.552733]  ksys_ioctl+0xa9/0xd0
[   33.556173]  __x64_sys_ioctl+0x73/0xb0
[   33.560063]  do_syscall_64+0x1b9/0x820
[   33.563940]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   33.569285]  ? syscall_return_slowpath+0x5e0/0x5e0
[   33.574197]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.579021]  ? trace_hardirqs_off+0x310/0x310
[   33.583495]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   33.588493]  ? prepare_exit_to_usermode+0x291/0x3b0
[   33.593493]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.598318]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   33.603508] RIP: 0033:0x440029
[   33.606687] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   33.625597] RSP: 002b:00007fff504c4408 EFLAGS: 00000207 ORIG_RAX: 0000000000000010
[   33.633288] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029
[   33.640540] RDX: 0000000000440029 RSI: 0000000000006611 RDI: 0000000000000003
[   33.647789] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   33.655055] R10: 0000000000000000 R11: 0000000000000207 R12: 00000000004018b0
[   33.662303] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000
[   33.669555] Modules linked in:
[   33.672845] ---[ end trace 1c94867877cd27b4 ]---
[   33.677646] RIP: 0010:rb_erase+0x306/0x3710
[   33.681977] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00
[   33.700889] RSP: 0018:ffff8801d7e86918 EFLAGS: 00010202
[   33.706270] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   33.713551] RDX: 1ffff1003afd0d2b RSI: ffffffff8b5a4340 RDI: 0000000000000008
[   33.720836] RBP: ffff8801d7e87320 R08: dffffc0000000000 R09: fffffbfff135d930
[   33.728120] R10: fffffbfff135d930 R11: ffffffff89aec983 R12: ffff8801b6f6f970
[   33.735390] R13: dffffc0000000000 R14: ffff8801d7e872f8 R15: ffff8801d7e87438
[   33.742703] FS:  00000000017b3880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
[   33.750939] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.756801] CR2: 0000000020000700 CR3: 00000001d96fe000 CR4: 00000000001406e0
[   33.764084] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.771367] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.778649] Kernel panic - not syncing: Fatal exception
[   33.785073] Kernel Offset: disabled
[   33.788716] Rebooting in 86400 seconds..