[info] Using makefile-style concurrent boot in runlevel 2. [ 22.781187] audit: type=1800 audit(1540394741.277:21): pid=5168 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 22.808480] audit: type=1800 audit(1540394741.277:22): pid=5168 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 '10.128.0.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.750929] kasan: CONFIG_KASAN_INLINE enabled [ 40.755614] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.762964] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.769182] CPU: 1 PID: 5324 Comm: syz-executor236 Not tainted 4.19.0-rc8+ #275 [ 40.776606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.785948] RIP: 0010:rb_erase+0x306/0x3710 [ 40.790269] 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 [ 40.809169] RSP: 0018:ffff8801bde16918 EFLAGS: 00010202 [ 40.814611] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 40.821867] RDX: 1ffff10037bc2d2b RSI: ffffffff8afc5060 RDI: 0000000000000008 [ 40.829117] RBP: ffff8801bde17320 R08: dffffc0000000000 R09: fffffbfff12d6970 [ 40.836369] R10: fffffbfff12d6970 R11: ffffffff896b4b83 R12: ffff8801b7325970 [ 40.843738] R13: dffffc0000000000 R14: ffff8801bde172f8 R15: ffff8801bde17438 [ 40.850994] FS: 00000000023ac880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 40.859201] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.865064] CR2: 0000000020000080 CR3: 00000001bb210000 CR4: 00000000001406e0 [ 40.872325] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.879614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.886868] Call Trace: [ 40.889465] ? lockdep_on+0x50/0x50 [ 40.893080] ? rb_insert_color+0x1460/0x1460 [ 40.897469] ? lock_downgrade+0x900/0x900 [ 40.901601] ? noop_count+0x40/0x40 [ 40.905210] ? lock_pin_lock+0x350/0x350 [ 40.909257] ? rcu_bh_qs+0xc0/0xc0 [ 40.912777] ? unwind_dump+0x190/0x190 [ 40.916649] ? kasan_check_read+0x11/0x20 [ 40.920815] ? noop_count+0x40/0x40 [ 40.924428] ? lock_pin_lock+0x350/0x350 [ 40.928484] ? mark_held_locks+0x130/0x130 [ 40.932708] ? check_usage_forwards+0x3e0/0x3e0 [ 40.937358] ? __bfs+0x385/0x7a0 [ 40.940729] ? check_usage+0x1a9/0x790 [ 40.944602] ? lock_pin_lock+0x350/0x350 [ 40.948649] ? check_usage_forwards+0x3e0/0x3e0 [ 40.953297] ? __bfs+0x385/0x7a0 [ 40.956658] ? modules_open+0xa0/0xa0 [ 40.960442] ? lockdep_on+0x50/0x50 [ 40.964048] ? lock_pin_lock+0x350/0x350 [ 40.968094] ? mark_held_locks+0x130/0x130 [ 40.972327] ? kasan_check_read+0x11/0x20 [ 40.976457] ? __lock_acquire+0x2881/0x4ec0 [ 40.980774] ? mark_held_locks+0x130/0x130 [ 40.984990] ? print_usage_bug+0xc0/0xc0 [ 40.989032] ? _raw_spin_unlock+0x2c/0x50 [ 40.993164] ? graph_lock+0x170/0x170 [ 40.996948] ? ext4_exit_mballoc+0xc0/0xc0 [ 41.001167] ? __lock_acquire+0x7ec/0x4ec0 [ 41.005400] ? find_held_lock+0x36/0x1c0 [ 41.009451] ? mark_held_locks+0x130/0x130 [ 41.013665] ? lock_downgrade+0x900/0x900 [ 41.017794] ? ext4_es_scan+0x960/0x960 [ 41.021765] ? lock_release+0x970/0x970 [ 41.025737] ? do_raw_write_trylock+0x1c0/0x1c0 [ 41.030391] ? kasan_check_write+0x14/0x20 [ 41.034609] ? lock_acquire+0x1ed/0x520 [ 41.038567] ? integrity_inode_free+0x77/0x320 [ 41.043141] ? ext4_es_remove_extent+0x151/0x500 [ 41.047878] ? lock_release+0x970/0x970 [ 41.051843] ? kasan_check_write+0x14/0x20 [ 41.056063] ? do_raw_write_lock+0xbd/0x1e0 [ 41.060369] integrity_inode_free+0x12f/0x320 [ 41.064846] security_inode_free+0x19/0x90 [ 41.069066] __destroy_inode+0x328/0x820 [ 41.073107] ? generic_update_time+0x450/0x450 [ 41.077680] ? evict+0x5d8/0x980 [ 41.081030] ? lock_downgrade+0x900/0x900 [ 41.085160] ? __inode_wait_for_writeback+0x2cf/0x380 [ 41.090356] destroy_inode+0xda/0x200 [ 41.094145] ? __destroy_inode+0x820/0x820 [ 41.098362] ? kasan_check_write+0x14/0x20 [ 41.102578] ? do_raw_spin_lock+0xc1/0x230 [ 41.106797] evict+0x5e0/0x980 [ 41.109989] ? destroy_inode+0x200/0x200 [ 41.114032] ? iput+0x671/0xa90 [ 41.117294] ? lock_downgrade+0x900/0x900 [ 41.121426] ? kasan_check_read+0x11/0x20 [ 41.125557] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 41.130118] ? lock_downgrade+0x900/0x900 [ 41.134255] iput+0x679/0xa90 [ 41.137347] ? inode_add_lru+0x2a0/0x2a0 [ 41.141480] ? up_write+0x7b/0x220 [ 41.145024] ? up_read+0x110/0x110 [ 41.148567] ? up_read+0x110/0x110 [ 41.152092] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.157615] ? check_preemption_disabled+0x48/0x280 [ 41.162617] ext4_ioctl+0x236f/0x4210 [ 41.166406] ? is_bpf_text_address+0xac/0x170 [ 41.170888] ? ext4_ioctl_group_add+0x560/0x560 [ 41.175542] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 41.181335] ? kasan_check_read+0x11/0x20 [ 41.185471] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 41.190738] ? rcu_bh_qs+0xc0/0xc0 [ 41.194264] ? rcu_bh_qs+0xc0/0xc0 [ 41.197785] ? unwind_dump+0x190/0x190 [ 41.201781] ? is_bpf_text_address+0xd3/0x170 [ 41.206262] ? kernel_text_address+0x79/0xf0 [ 41.210756] ? __kernel_text_address+0xd/0x40 [ 41.215237] ? unwind_get_return_address+0x61/0xa0 [ 41.220152] ? __save_stack_trace+0x8d/0xf0 [ 41.224741] ? save_stack+0xa9/0xd0 [ 41.228353] ? save_stack+0x43/0xd0 [ 41.231960] ? __kasan_slab_free+0x102/0x150 [ 41.236358] ? kasan_slab_free+0xe/0x10 [ 41.240316] ? kmem_cache_free+0x83/0x290 [ 41.244443] ? putname+0xf2/0x130 [ 41.247875] ? do_sys_open+0x54d/0x700 [ 41.251746] ? __x64_sys_openat+0x9d/0x100 [ 41.255967] ? do_syscall_64+0x1b9/0x820 [ 41.260017] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.265380] ? trace_hardirqs_off+0xb8/0x310 [ 41.269781] ? kasan_check_read+0x11/0x20 [ 41.273911] ? do_raw_spin_unlock+0xa7/0x330 [ 41.278321] ? trace_hardirqs_on+0x310/0x310 [ 41.282728] ? kasan_check_write+0x14/0x20 [ 41.286950] ? trace_hardirqs_off+0xb8/0x310 [ 41.291354] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.296884] ? check_preemption_disabled+0x48/0x280 [ 41.301884] ? check_preemption_disabled+0x48/0x280 [ 41.306905] ? ext4_ioctl_group_add+0x560/0x560 [ 41.311560] do_vfs_ioctl+0x1de/0x1720 [ 41.315430] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 41.320705] ? ioctl_preallocate+0x300/0x300 [ 41.325188] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.330704] ? __fget_light+0x2e9/0x430 [ 41.334662] ? fget_raw+0x20/0x20 [ 41.338098] ? putname+0xf2/0x130 [ 41.341542] ? rcu_read_lock_sched_held+0x108/0x120 [ 41.346543] ? kmem_cache_free+0x24f/0x290 [ 41.350757] ? putname+0xf7/0x130 [ 41.354196] ? do_syscall_64+0x9a/0x820 [ 41.358152] ? do_syscall_64+0x9a/0x820 [ 41.362114] ? lockdep_hardirqs_on+0x421/0x5c0 [ 41.366682] ? security_file_ioctl+0x94/0xc0 [ 41.371075] ksys_ioctl+0xa9/0xd0 [ 41.374510] __x64_sys_ioctl+0x73/0xb0 [ 41.378384] do_syscall_64+0x1b9/0x820 [ 41.382254] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.387599] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.392512] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.397337] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.402336] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 41.407335] ? prepare_exit_to_usermode+0x291/0x3b0 [ 41.412332] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.417161] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.422330] RIP: 0033:0x440009 [ 41.425509] 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 [ 41.444395] RSP: 002b:00007ffd32ebb3c8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 41.452084] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 41.459344] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 41.466595] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 41.473843] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 41.481102] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 41.488354] Modules linked in: [ 41.491607] ---[ end trace 384e087dbaba6777 ]--- [ 41.496419] RIP: 0010:rb_erase+0x306/0x3710 [ 41.500727] 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 [ 41.519655] RSP: 0018:ffff8801bde16918 EFLAGS: 00010202 [ 41.525022] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 41.532512] RDX: 1ffff10037bc2d2b RSI: ffffffff8afc5060 RDI: 0000000000000008 [ 41.539809] RBP: ffff8801bde17320 R08: dffffc0000000000 R09: fffffbfff12d6970 [ 41.547107] R10: fffffbfff12d6970 R11: ffffffff896b4b83 R12: ffff8801b7325970 [ 41.554360] R13: dffffc0000000000 R14: ffff8801bde172f8 R15: ffff8801bde17438 [ 41.561650] FS: 00000000023ac880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 41.569909] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.575807] CR2: 0000000020000080 CR3: 00000001bb210000 CR4: 00000000001406e0 [ 41.583069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.590358] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.597659] Kernel panic - not syncing: Fatal exception [ 41.604162] Kernel Offset: disabled [ 41.607781] Rebooting in 86400 seconds..