[info] Using makefile-style concurrent boot in runlevel 2. [ 24.203993] audit: type=1800 audit(1540365622.906:21): pid=5172 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.236215] audit: type=1800 audit(1540365622.916:22): pid=5172 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 '10.128.0.95' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.386040] kasan: CONFIG_KASAN_INLINE enabled [ 35.390813] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.398217] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.404455] CPU: 0 PID: 5326 Comm: syz-executor408 Not tainted 4.19.0+ #300 [ 35.411533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.420874] RIP: 0010:rb_erase+0x306/0x3710 [ 35.425201] 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 [ 35.444363] RSP: 0018:ffff8801c5336918 EFLAGS: 00010202 [ 35.449706] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 35.456957] RDX: 1ffff10038a66d2b RSI: ffffffff8af89820 RDI: 0000000000000008 [ 35.464208] RBP: ffff8801c5337320 R08: dffffc0000000000 R09: ffffed0038a66e53 [ 35.471459] R10: ffffed0038a66e53 R11: 0000000000000003 R12: ffff8801b7287870 [ 35.478709] R13: dffffc0000000000 R14: ffff8801c53372f8 R15: ffff8801c5337438 [ 35.485958] FS: 0000000002131880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 35.494178] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.500057] CR2: 0000000020000080 CR3: 00000001bb63a000 CR4: 00000000001406f0 [ 35.507314] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.514563] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.521813] Call Trace: [ 35.524386] ? modules_open+0xa0/0xa0 [ 35.528171] ? rb_insert_color+0x1460/0x1460 [ 35.532563] ? noop_count+0x40/0x40 [ 35.536176] ? print_bfs_bug+0x80/0x80 [ 35.540047] ? mark_held_locks+0x130/0x130 [ 35.544264] ? kernel_text_address+0x79/0xf0 [ 35.548655] ? noop_count+0x40/0x40 [ 35.552260] ? print_bfs_bug+0x80/0x80 [ 35.556137] ? noop_count+0x40/0x40 [ 35.559809] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.565334] ? check_usage_forwards+0x3d0/0x3d0 [ 35.569984] ? __bfs+0x321/0x780 [ 35.573330] ? check_usage+0x1aa/0x790 [ 35.577199] ? print_bfs_bug+0x80/0x80 [ 35.581071] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 35.585981] ? check_usage_forwards+0x3d0/0x3d0 [ 35.590632] ? kasan_check_read+0x11/0x20 [ 35.594767] ? graph_lock+0x9c/0x270 [ 35.598461] ? __bfs+0x321/0x780 [ 35.601806] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 35.607671] ? lockdep_on+0x50/0x50 [ 35.611283] ? print_bfs_bug+0x80/0x80 [ 35.615154] ? kasan_check_read+0x11/0x20 [ 35.619289] ? graph_lock+0x9c/0x270 [ 35.622984] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 35.628850] ? mark_held_locks+0x130/0x130 [ 35.633069] ? kasan_check_read+0x11/0x20 [ 35.637198] ? __lock_acquire+0x2aff/0x4c20 [ 35.641506] ? mark_held_locks+0x130/0x130 [ 35.645781] ? print_usage_bug+0xc0/0xc0 [ 35.649825] ? print_usage_bug+0xc0/0xc0 [ 35.653869] ? __lock_acquire+0x62f/0x4c20 [ 35.658087] ? zap_class+0x640/0x640 [ 35.661781] ? print_usage_bug+0xc0/0xc0 [ 35.665828] ? __lock_acquire+0x62f/0x4c20 [ 35.670052] ? mark_held_locks+0x130/0x130 [ 35.674267] ? lock_downgrade+0x900/0x900 [ 35.678403] ? ext4_es_scan+0x960/0x960 [ 35.682362] ? kasan_check_read+0x11/0x20 [ 35.686493] ? do_raw_write_lock+0x14f/0x310 [ 35.690882] ? do_raw_write_trylock+0x270/0x270 [ 35.695534] ? lock_acquire+0x1ed/0x520 [ 35.699491] ? integrity_inode_free+0x77/0x320 [ 35.704054] ? ext4_es_remove_extent+0x151/0x500 [ 35.708797] ? kasan_check_read+0x11/0x20 [ 35.712925] ? do_raw_write_lock+0x14f/0x310 [ 35.717317] ? do_raw_read_unlock+0x70/0x70 [ 35.721619] ? zap_class+0x640/0x640 [ 35.725320] integrity_inode_free+0x12f/0x320 [ 35.729801] security_inode_free+0x19/0x90 [ 35.734027] __destroy_inode+0x328/0x820 [ 35.738070] ? clear_nlink+0xe0/0xe0 [ 35.741767] ? evict+0x5d8/0x980 [ 35.745144] ? lock_downgrade+0x900/0x900 [ 35.749274] ? __inode_wait_for_writeback+0x2cf/0x380 [ 35.754450] destroy_inode+0xda/0x200 [ 35.758248] ? __destroy_inode+0x820/0x820 [ 35.762465] evict+0x5e0/0x980 [ 35.765638] ? destroy_inode+0x200/0x200 [ 35.769680] ? iput+0x671/0xa90 [ 35.772944] ? lock_downgrade+0x900/0x900 [ 35.777081] ? kasan_check_read+0x11/0x20 [ 35.781213] ? do_raw_spin_trylock+0x270/0x270 [ 35.785776] ? lock_downgrade+0x900/0x900 [ 35.789925] iput+0x679/0xa90 [ 35.793013] ? inode_add_lru+0x2a0/0x2a0 [ 35.797064] ? up_write+0x7b/0x220 [ 35.800585] ? down_write_nested+0x130/0x130 [ 35.804986] ? down_write_nested+0x130/0x130 [ 35.809376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.814901] ? check_preemption_disabled+0x48/0x280 [ 35.819916] ext4_ioctl+0x236f/0x4210 [ 35.823724] ? is_bpf_text_address+0xac/0x170 [ 35.828209] ? ext4_ioctl_group_add+0x560/0x560 [ 35.832860] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 35.837771] ? kasan_check_read+0x11/0x20 [ 35.841901] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 35.847162] ? rcu_softirq_qs+0x20/0x20 [ 35.851117] ? rcu_softirq_qs+0x20/0x20 [ 35.855073] ? unwind_dump+0x190/0x190 [ 35.858943] ? is_bpf_text_address+0xd3/0x170 [ 35.863420] ? kernel_text_address+0x79/0xf0 [ 35.867808] ? __kernel_text_address+0xd/0x40 [ 35.872286] ? unwind_get_return_address+0x61/0xa0 [ 35.877203] ? __save_stack_trace+0x8d/0xf0 [ 35.881511] ? save_stack+0xa9/0xd0 [ 35.885117] ? save_stack+0x43/0xd0 [ 35.888728] ? __kasan_slab_free+0x102/0x150 [ 35.893116] ? kasan_slab_free+0xe/0x10 [ 35.897070] ? kmem_cache_free+0x83/0x290 [ 35.901197] ? putname+0xf2/0x130 [ 35.904630] ? do_sys_open+0x54d/0x700 [ 35.908496] ? __x64_sys_openat+0x9d/0x100 [ 35.912714] ? do_syscall_64+0x1b9/0x820 [ 35.916789] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.922150] ? trace_hardirqs_off+0xb8/0x310 [ 35.926539] ? kasan_check_read+0x11/0x20 [ 35.930669] ? do_raw_spin_unlock+0xa7/0x330 [ 35.935074] ? trace_hardirqs_on+0x310/0x310 [ 35.939466] ? trace_hardirqs_off+0xb8/0x310 [ 35.943858] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.949378] ? ext4_ioctl_group_add+0x560/0x560 [ 35.954031] do_vfs_ioctl+0x1de/0x1720 [ 35.957902] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 35.963419] ? ioctl_preallocate+0x300/0x300 [ 35.967808] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.973323] ? __fget_light+0x2e9/0x430 [ 35.977299] ? fget_raw+0x20/0x20 [ 35.980735] ? putname+0xf2/0x130 [ 35.984167] ? rcu_read_lock_sched_held+0x14f/0x180 [ 35.989165] ? kmem_cache_free+0x24f/0x290 [ 35.993382] ? putname+0xf7/0x130 [ 35.996817] ? do_syscall_64+0x9a/0x820 [ 36.000769] ? do_syscall_64+0x9a/0x820 [ 36.004726] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 36.009297] ? security_file_ioctl+0x94/0xc0 [ 36.013688] ksys_ioctl+0xa9/0xd0 [ 36.017127] __x64_sys_ioctl+0x73/0xb0 [ 36.021005] do_syscall_64+0x1b9/0x820 [ 36.024894] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.030241] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.035156] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.039980] ? trace_hardirqs_on_caller+0x310/0x310 [ 36.044975] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 36.049971] ? prepare_exit_to_usermode+0x291/0x3b0 [ 36.054971] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.059802] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.064971] RIP: 0033:0x440009 [ 36.068146] 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 [ 36.087032] RSP: 002b:00007ffe99734e38 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 36.094721] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 36.101972] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 36.109222] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 36.116470] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 36.123740] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 36.131035] Modules linked in: [ 36.134316] ---[ end trace a69430d70037fb9a ]--- [ 36.139104] RIP: 0010:rb_erase+0x306/0x3710 [ 36.143412] 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 [ 36.162328] RSP: 0018:ffff8801c5336918 EFLAGS: 00010202 [ 36.167711] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 36.174967] RDX: 1ffff10038a66d2b RSI: ffffffff8af89820 RDI: 0000000000000008 [ 36.182266] RBP: ffff8801c5337320 R08: dffffc0000000000 R09: ffffed0038a66e53 [ 36.189558] R10: ffffed0038a66e53 R11: 0000000000000003 R12: ffff8801b7287870 [ 36.196844] R13: dffffc0000000000 R14: ffff8801c53372f8 R15: ffff8801c5337438 [ 36.204131] FS: 0000000002131880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 36.212431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.218341] CR2: 0000000020000080 CR3: 00000001bb63a000 CR4: 00000000001406f0 [ 36.225596] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.232879] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.240165] Kernel panic - not syncing: Fatal exception [ 36.246440] Kernel Offset: disabled [ 36.250063] Rebooting in 86400 seconds..