[info] Using makefile-style concurrent boot in runlevel 2.
[   24.910165] audit: type=1800 audit(1538348174.436:21): pid=5224 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 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 '10.128.0.56' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   38.982984] kasan: CONFIG_KASAN_INLINE enabled
[   38.987643] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   38.995118] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   39.001351] CPU: 0 PID: 5379 Comm: syz-executor068 Not tainted 4.19.0-rc6+ #39
[   39.008688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.018054] RIP: 0010:rb_erase+0x306/0x3710
[   39.022366] 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
[   39.041253] RSP: 0018:ffff8801bd466918 EFLAGS: 00010202
[   39.046595] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   39.053844] RDX: 1ffff10037a8cd2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008
[   39.061092] RBP: ffff8801bd467320 R08: dffffc0000000000 R09: fffffbfff12d6a48
[   39.068344] R10: fffffbfff12d6a48 R11: ffffffff896b5243 R12: ffff8801b6b861f0
[   39.075616] R13: dffffc0000000000 R14: ffff8801bd4672f8 R15: ffff8801bd467438
[   39.082871] FS:  0000000002449880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
[   39.091077] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.096949] CR2: 0000000020000080 CR3: 00000001ba81c000 CR4: 00000000001406f0
[   39.104198] Call Trace:
[   39.106771]  ? lockdep_on+0x50/0x50
[   39.110380]  ? rb_insert_color+0x1460/0x1460
[   39.114771]  ? noop_count+0x40/0x40
[   39.118377]  ? lock_pin_lock+0x350/0x350
[   39.122419]  ? noop_count+0x40/0x40
[   39.126038]  ? kasan_check_read+0x11/0x20
[   39.130164]  ? noop_count+0x40/0x40
[   39.133788]  ? noop_count+0x40/0x40
[   39.137423]  ? lock_pin_lock+0x350/0x350
[   39.141469]  ? mark_held_locks+0x130/0x130
[   39.145691]  ? check_usage_forwards+0x3e0/0x3e0
[   39.150362]  ? __bfs+0x385/0x7a0
[   39.153713]  ? noop_count+0x40/0x40
[   39.157324]  ? check_usage+0x1a9/0x790
[   39.161189]  ? lock_pin_lock+0x350/0x350
[   39.165238]  ? check_usage_forwards+0x3e0/0x3e0
[   39.169885]  ? __bfs+0x385/0x7a0
[   39.173233]  ? __lock_acquire+0x7ec/0x4ec0
[   39.177451]  ? lockdep_on+0x50/0x50
[   39.181058]  ? lock_pin_lock+0x350/0x350
[   39.185103]  ? mark_held_locks+0x130/0x130
[   39.189315]  ? kasan_check_read+0x11/0x20
[   39.193450]  ? __lock_acquire+0x2881/0x4ec0
[   39.197755]  ? mark_held_locks+0x130/0x130
[   39.201970]  ? print_usage_bug+0xc0/0xc0
[   39.206027]  ? _raw_spin_unlock+0x2c/0x50
[   39.210156]  ? graph_lock+0x170/0x170
[   39.213963]  ? ext4_exit_mballoc+0xc0/0xc0
[   39.218181]  ? __lock_acquire+0x7ec/0x4ec0
[   39.222397]  ? find_held_lock+0x36/0x1c0
[   39.226466]  ? mark_held_locks+0x130/0x130
[   39.230683]  ? lock_downgrade+0x900/0x900
[   39.234815]  ? ext4_es_scan+0x960/0x960
[   39.238767]  ? lock_release+0x970/0x970
[   39.242730]  ? do_raw_write_trylock+0x1c0/0x1c0
[   39.247384]  ? kasan_check_write+0x14/0x20
[   39.251598]  ? lock_acquire+0x1ed/0x520
[   39.255555]  ? integrity_inode_free+0x77/0x320
[   39.260116]  ? ext4_es_remove_extent+0x151/0x500
[   39.264867]  ? lock_release+0x970/0x970
[   39.268848]  ? kasan_check_write+0x14/0x20
[   39.273065]  ? do_raw_write_lock+0xbd/0x1b0
[   39.277370]  integrity_inode_free+0x12f/0x320
[   39.281846]  security_inode_free+0x19/0x90
[   39.286063]  __destroy_inode+0x328/0x820
[   39.290102]  ? generic_update_time+0x450/0x450
[   39.294937]  ? evict+0x5d8/0x980
[   39.298284]  ? lock_downgrade+0x900/0x900
[   39.302449]  ? __inode_wait_for_writeback+0x2cf/0x380
[   39.307635]  destroy_inode+0xda/0x200
[   39.311414]  ? __destroy_inode+0x820/0x820
[   39.315653]  ? kasan_check_write+0x14/0x20
[   39.319886]  ? do_raw_spin_lock+0xc1/0x200
[   39.324104]  evict+0x5e0/0x980
[   39.327277]  ? destroy_inode+0x200/0x200
[   39.331315]  ? iput+0x671/0xa90
[   39.334588]  ? lock_downgrade+0x900/0x900
[   39.338723]  ? kasan_check_read+0x11/0x20
[   39.342855]  ? do_raw_spin_trylock+0x1c0/0x1c0
[   39.347427]  ? lock_downgrade+0x900/0x900
[   39.351575]  iput+0x679/0xa90
[   39.354661]  ? inode_add_lru+0x2a0/0x2a0
[   39.358700]  ? up_write+0x7b/0x220
[   39.362223]  ? up_read+0x110/0x110
[   39.365740]  ? up_read+0x110/0x110
[   39.369274]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.374793]  ? check_preemption_disabled+0x48/0x200
[   39.379806]  ext4_ioctl+0x236f/0x4210
[   39.383592]  ? is_bpf_text_address+0xac/0x170
[   39.388068]  ? ext4_ioctl_group_add+0x560/0x560
[   39.392729]  ? rcu_read_unlock_special.part.39+0x11f0/0x11f0
[   39.398508]  ? kasan_check_read+0x11/0x20
[   39.402638]  ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160
[   39.407913]  ? rcu_bh_qs+0xc0/0xc0
[   39.411437]  ? rcu_bh_qs+0xc0/0xc0
[   39.414984]  ? unwind_dump+0x190/0x190
[   39.418857]  ? is_bpf_text_address+0xd3/0x170
[   39.423339]  ? kernel_text_address+0x79/0xf0
[   39.427726]  ? __kernel_text_address+0xd/0x40
[   39.432200]  ? unwind_get_return_address+0x61/0xa0
[   39.437115]  ? __save_stack_trace+0x8d/0xf0
[   39.441432]  ? save_stack+0xa9/0xd0
[   39.445045]  ? save_stack+0x43/0xd0
[   39.448658]  ? __kasan_slab_free+0x102/0x150
[   39.453086]  ? kasan_slab_free+0xe/0x10
[   39.457054]  ? kmem_cache_free+0x83/0x290
[   39.461179]  ? putname+0xf2/0x130
[   39.464615]  ? do_sys_open+0x54d/0x700
[   39.468481]  ? __x64_sys_openat+0x9d/0x100
[   39.472699]  ? do_syscall_64+0x1b9/0x820
[   39.476751]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.482097]  ? trace_hardirqs_off+0xb8/0x310
[   39.486487]  ? kasan_check_read+0x11/0x20
[   39.490684]  ? do_raw_spin_unlock+0xa7/0x2f0
[   39.495094]  ? trace_hardirqs_on+0x310/0x310
[   39.499486]  ? kasan_check_write+0x14/0x20
[   39.503720]  ? trace_hardirqs_off+0xb8/0x310
[   39.508112]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.513653]  ? check_preemption_disabled+0x48/0x200
[   39.518668]  ? check_preemption_disabled+0x48/0x200
[   39.523694]  ? ext4_ioctl_group_add+0x560/0x560
[   39.528374]  do_vfs_ioctl+0x1de/0x1720
[   39.532248]  ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160
[   39.537540]  ? ioctl_preallocate+0x300/0x300
[   39.541933]  ? memset+0x31/0x40
[   39.545216]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.550739]  ? smack_file_ioctl+0x210/0x3c0
[   39.555045]  ? fget_raw+0x20/0x20
[   39.558491]  ? smack_file_lock+0x2e0/0x2e0
[   39.562720]  ? do_syscall_64+0x9a/0x820
[   39.566679]  ? do_syscall_64+0x9a/0x820
[   39.570645]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.576176]  ? security_file_ioctl+0x94/0xc0
[   39.580575]  ksys_ioctl+0xa9/0xd0
[   39.584017]  __x64_sys_ioctl+0x73/0xb0
[   39.587891]  do_syscall_64+0x1b9/0x820
[   39.591780]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   39.597146]  ? syscall_return_slowpath+0x5e0/0x5e0
[   39.602070]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.607017]  ? trace_hardirqs_on_caller+0x310/0x310
[   39.612037]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   39.617041]  ? prepare_exit_to_usermode+0x291/0x3b0
[   39.622055]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.626888]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.632072] RIP: 0033:0x440019
[   39.635276] 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
[   39.654164] RSP: 002b:00007ffd1cbc4688 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
[   39.661869] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440019
[   39.669128] RDX: 0000000000440019 RSI: 0000000000006611 RDI: 0000000000000003
[   39.676388] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   39.683673] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004018a0
[   39.690931] R13: 0000000000401930 R14: 0000000000000000 R15: 0000000000000000
[   39.698194] Modules linked in:
[   39.701579] ---[ end trace ab96f23c9b2d6de7 ]---
[   39.706366] RIP: 0010:rb_erase+0x306/0x3710
[   39.710671] 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
[   39.729592] RSP: 0018:ffff8801bd466918 EFLAGS: 00010202
[   39.734973] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   39.742238] RDX: 1ffff10037a8cd2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008
[   39.749523] RBP: ffff8801bd467320 R08: dffffc0000000000 R09: fffffbfff12d6a48
[   39.756809] R10: fffffbfff12d6a48 R11: ffffffff896b5243 R12: ffff8801b6b861f0
[   39.764109] R13: dffffc0000000000 R14: ffff8801bd4672f8 R15: ffff8801bd467438
[   39.771407] FS:  0000000002449880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
[   39.779660] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.785556] CR2: 0000000020000080 CR3: 00000001ba81c000 CR4: 00000000001406f0
[   39.792843] Kernel panic - not syncing: Fatal exception
[   39.799103] Kernel Offset: disabled
[   39.802728] Rebooting in 86400 seconds..