[info] Using makefile-style concurrent boot in runlevel 2. [ 24.007672] audit: type=1800 audit(1539847090.719:21): pid=5197 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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[ 25.286657] ssh (5259) used greatest stack depth: 15688 bytes left . Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.266804] kasan: CONFIG_KASAN_INLINE enabled [ 34.271529] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.278973] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.285221] CPU: 0 PID: 5350 Comm: syz-executor800 Not tainted 4.19.0-rc7+ #145 [ 34.292648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.302022] RIP: 0010:rb_erase+0x306/0x3710 [ 34.306331] 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 [ 34.325232] RSP: 0018:ffff8801d9b9e918 EFLAGS: 00010202 [ 34.330623] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 34.337874] RDX: 1ffff1003b373d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 34.345126] RBP: ffff8801d9b9f320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 34.352377] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b7325970 [ 34.359628] R13: dffffc0000000000 R14: ffff8801d9b9f2f8 R15: ffff8801d9b9f438 [ 34.366880] FS: 0000000000c62880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 34.375086] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.380948] CR2: 0000000020000080 CR3: 00000001d8979000 CR4: 00000000001406f0 [ 34.388197] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.395448] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.402703] Call Trace: [ 34.405277] ? lockdep_on+0x50/0x50 [ 34.408888] ? rb_insert_color+0x1460/0x1460 [ 34.413284] ? lock_downgrade+0x900/0x900 [ 34.417414] ? noop_count+0x40/0x40 [ 34.421023] ? lock_pin_lock+0x350/0x350 [ 34.425065] ? rcu_bh_qs+0xc0/0xc0 [ 34.428586] ? unwind_dump+0x190/0x190 [ 34.432456] ? kasan_check_read+0x11/0x20 [ 34.436587] ? noop_count+0x40/0x40 [ 34.440197] ? lock_pin_lock+0x350/0x350 [ 34.444241] ? mark_held_locks+0x130/0x130 [ 34.448479] ? check_usage_forwards+0x3e0/0x3e0 [ 34.453141] ? __bfs+0x385/0x7a0 [ 34.456491] ? check_usage+0x1a9/0x790 [ 34.460363] ? lock_pin_lock+0x350/0x350 [ 34.464420] ? check_usage_forwards+0x3e0/0x3e0 [ 34.469070] ? __bfs+0x385/0x7a0 [ 34.472420] ? modules_open+0xa0/0xa0 [ 34.476214] ? lockdep_on+0x50/0x50 [ 34.479832] ? lock_pin_lock+0x350/0x350 [ 34.483877] ? mark_held_locks+0x130/0x130 [ 34.488109] ? kasan_check_read+0x11/0x20 [ 34.492245] ? __lock_acquire+0x2881/0x4ec0 [ 34.496549] ? mark_held_locks+0x130/0x130 [ 34.500766] ? print_usage_bug+0xc0/0xc0 [ 34.504829] ? _raw_spin_unlock+0x2c/0x50 [ 34.508973] ? graph_lock+0x170/0x170 [ 34.512764] ? ext4_exit_mballoc+0xc0/0xc0 [ 34.517005] ? __lock_acquire+0x7ec/0x4ec0 [ 34.521238] ? find_held_lock+0x36/0x1c0 [ 34.525285] ? mark_held_locks+0x130/0x130 [ 34.529507] ? lock_downgrade+0x900/0x900 [ 34.533639] ? ext4_es_scan+0x960/0x960 [ 34.537600] ? do_raw_write_trylock+0x1c0/0x1c0 [ 34.542256] ? kasan_check_write+0x14/0x20 [ 34.546477] ? lock_acquire+0x1ed/0x520 [ 34.550443] ? integrity_inode_free+0x77/0x320 [ 34.555022] ? ext4_es_remove_extent+0x151/0x500 [ 34.559766] ? lock_release+0x970/0x970 [ 34.563735] ? kasan_check_write+0x14/0x20 [ 34.567994] ? do_raw_write_lock+0xbd/0x1b0 [ 34.572308] integrity_inode_free+0x12f/0x320 [ 34.576801] security_inode_free+0x19/0x90 [ 34.581027] __destroy_inode+0x328/0x820 [ 34.585092] ? generic_update_time+0x450/0x450 [ 34.589660] ? evict+0x5d8/0x980 [ 34.593012] ? lock_downgrade+0x900/0x900 [ 34.597143] ? __inode_wait_for_writeback+0x2cf/0x380 [ 34.602378] destroy_inode+0xda/0x200 [ 34.606162] ? __destroy_inode+0x820/0x820 [ 34.610393] ? kasan_check_write+0x14/0x20 [ 34.614621] ? do_raw_spin_lock+0xc1/0x200 [ 34.618839] evict+0x5e0/0x980 [ 34.622016] ? destroy_inode+0x200/0x200 [ 34.626062] ? iput+0x671/0xa90 [ 34.629325] ? lock_downgrade+0x900/0x900 [ 34.633455] ? kasan_check_read+0x11/0x20 [ 34.637588] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.642156] ? lock_downgrade+0x900/0x900 [ 34.646308] iput+0x679/0xa90 [ 34.649396] ? inode_add_lru+0x2a0/0x2a0 [ 34.653438] ? up_write+0x7b/0x220 [ 34.656959] ? up_read+0x110/0x110 [ 34.660477] ? up_read+0x110/0x110 [ 34.664011] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.669530] ? check_preemption_disabled+0x48/0x200 [ 34.674531] ext4_ioctl+0x236f/0x4210 [ 34.678315] ? is_bpf_text_address+0xac/0x170 [ 34.682792] ? ext4_ioctl_group_add+0x560/0x560 [ 34.687443] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 34.693221] ? kasan_check_read+0x11/0x20 [ 34.697354] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 34.702612] ? rcu_bh_qs+0xc0/0xc0 [ 34.706129] ? rcu_bh_qs+0xc0/0xc0 [ 34.709649] ? unwind_dump+0x190/0x190 [ 34.713522] ? is_bpf_text_address+0xd3/0x170 [ 34.717998] ? kernel_text_address+0x79/0xf0 [ 34.722386] ? __kernel_text_address+0xd/0x40 [ 34.726861] ? unwind_get_return_address+0x61/0xa0 [ 34.731785] ? __save_stack_trace+0x8d/0xf0 [ 34.736113] ? save_stack+0xa9/0xd0 [ 34.739731] ? save_stack+0x43/0xd0 [ 34.743351] ? __kasan_slab_free+0x102/0x150 [ 34.747735] ? kasan_slab_free+0xe/0x10 [ 34.751692] ? kmem_cache_free+0x83/0x290 [ 34.755833] ? putname+0xf2/0x130 [ 34.759267] ? do_sys_open+0x54d/0x700 [ 34.763150] ? __x64_sys_openat+0x9d/0x100 [ 34.767363] ? do_syscall_64+0x1b9/0x820 [ 34.771409] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.776771] ? trace_hardirqs_off+0xb8/0x310 [ 34.781189] ? kasan_check_read+0x11/0x20 [ 34.785320] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.789709] ? trace_hardirqs_on+0x310/0x310 [ 34.794097] ? kasan_check_write+0x14/0x20 [ 34.798309] ? trace_hardirqs_off+0xb8/0x310 [ 34.802702] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.808226] ? check_preemption_disabled+0x48/0x200 [ 34.813224] ? check_preemption_disabled+0x48/0x200 [ 34.818239] ? ext4_ioctl_group_add+0x560/0x560 [ 34.822902] do_vfs_ioctl+0x1de/0x1720 [ 34.826792] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 34.832054] ? ioctl_preallocate+0x300/0x300 [ 34.836445] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.841983] ? __fget_light+0x2e9/0x430 [ 34.845937] ? fget_raw+0x20/0x20 [ 34.849372] ? putname+0xf2/0x130 [ 34.852808] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.857817] ? kmem_cache_free+0x24f/0x290 [ 34.862033] ? putname+0xf7/0x130 [ 34.865484] ? do_syscall_64+0x9a/0x820 [ 34.869439] ? do_syscall_64+0x9a/0x820 [ 34.873394] ? lockdep_hardirqs_on+0x421/0x5c0 [ 34.877967] ? security_file_ioctl+0x94/0xc0 [ 34.882360] ksys_ioctl+0xa9/0xd0 [ 34.885797] __x64_sys_ioctl+0x73/0xb0 [ 34.889709] do_syscall_64+0x1b9/0x820 [ 34.893596] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.898943] ? syscall_return_slowpath+0x5e0/0x5e0 [ 34.903865] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.908706] ? trace_hardirqs_on_caller+0x310/0x310 [ 34.913706] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 34.918721] ? prepare_exit_to_usermode+0x291/0x3b0 [ 34.923725] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.928556] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.933725] RIP: 0033:0x440009 [ 34.936901] 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 [ 34.955803] RSP: 002b:00007ffe94e33218 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 34.963493] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 34.970747] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 34.977997] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 34.985251] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 34.992514] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 34.999770] Modules linked in: [ 35.003060] ---[ end trace 8d4218b702e16bc0 ]--- [ 35.007828] RIP: 0010:rb_erase+0x306/0x3710 [ 35.012204] 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 [ 35.031155] RSP: 0018:ffff8801d9b9e918 EFLAGS: 00010202 [ 35.036521] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 35.043955] RDX: 1ffff1003b373d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 35.051270] RBP: ffff8801d9b9f320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 35.058586] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b7325970 [ 35.065852] R13: dffffc0000000000 R14: ffff8801d9b9f2f8 R15: ffff8801d9b9f438 [ 35.073151] FS: 0000000000c62880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 35.081397] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.087268] CR2: 0000000020000080 CR3: 00000001d8979000 CR4: 00000000001406f0 [ 35.094572] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.101871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.109183] Kernel panic - not syncing: Fatal exception [ 35.115498] Kernel Offset: disabled [ 35.119132] Rebooting in 86400 seconds..