[ 24.282335] audit: type=1800 audit(1540388678.027:21): pid=5177 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.312074] audit: type=1800 audit(1540388678.027:22): pid=5177 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. [ 25.419648] sshd (5243) used greatest stack depth: 16072 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 46.433690] sshd (5319) used greatest stack depth: 15976 bytes left Warning: Permanently added '10.128.0.78' (ECDSA) to the list of known hosts. executing program [ 52.884068] kasan: CONFIG_KASAN_INLINE enabled [ 52.888908] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.896367] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.902588] CPU: 1 PID: 5333 Comm: syz-executor870 Not tainted 4.19.0-rc8+ #152 [ 52.910016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.919459] RIP: 0010:rb_erase+0x306/0x3710 [ 52.923766] 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 [ 52.942653] RSP: 0018:ffff8801d92e6918 EFLAGS: 00010202 [ 52.948004] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 52.955262] RDX: 1ffff1003b25cd2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 52.962556] RBP: ffff8801d92e7320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 52.969820] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b76e9970 [ 52.977074] R13: dffffc0000000000 R14: ffff8801d92e72f8 R15: ffff8801d92e7438 [ 52.984329] FS: 0000000000dc7880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 52.992534] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.998402] CR2: 00000000200001c0 CR3: 00000001c1ba0000 CR4: 00000000001406e0 [ 53.005659] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.012912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.020166] Call Trace: [ 53.022747] ? lockdep_on+0x50/0x50 [ 53.026356] ? rb_insert_color+0x1460/0x1460 [ 53.030747] ? lock_downgrade+0x900/0x900 [ 53.034879] ? noop_count+0x40/0x40 [ 53.038490] ? lock_pin_lock+0x350/0x350 [ 53.042535] ? rcu_bh_qs+0xc0/0xc0 [ 53.046064] ? unwind_dump+0x190/0x190 [ 53.049945] ? kasan_check_read+0x11/0x20 [ 53.054078] ? noop_count+0x40/0x40 [ 53.057689] ? lock_pin_lock+0x350/0x350 [ 53.061745] ? mark_held_locks+0x130/0x130 [ 53.066006] ? check_usage_forwards+0x3e0/0x3e0 [ 53.070666] ? __bfs+0x385/0x7a0 [ 53.074023] ? check_usage+0x1a9/0x790 [ 53.077898] ? lock_pin_lock+0x350/0x350 [ 53.081943] ? check_usage_forwards+0x3e0/0x3e0 [ 53.086590] ? __bfs+0x385/0x7a0 [ 53.089941] ? lockdep_on+0x50/0x50 [ 53.093557] ? lock_pin_lock+0x350/0x350 [ 53.097619] ? mark_held_locks+0x130/0x130 [ 53.101851] ? kasan_check_read+0x11/0x20 [ 53.105982] ? __lock_acquire+0x2881/0x4ec0 [ 53.110295] ? mark_held_locks+0x130/0x130 [ 53.114517] ? print_usage_bug+0xc0/0xc0 [ 53.118561] ? _raw_spin_unlock+0x2c/0x50 [ 53.122743] ? graph_lock+0x170/0x170 [ 53.126536] ? ext4_exit_mballoc+0xc0/0xc0 [ 53.130754] ? __lock_acquire+0x7ec/0x4ec0 [ 53.134973] ? find_held_lock+0x36/0x1c0 [ 53.139023] ? mark_held_locks+0x130/0x130 [ 53.143244] ? lock_downgrade+0x900/0x900 [ 53.147383] ? ext4_es_scan+0x960/0x960 [ 53.151348] ? do_raw_write_trylock+0x1c0/0x1c0 [ 53.156009] ? kasan_check_write+0x14/0x20 [ 53.160230] ? lock_acquire+0x1ed/0x520 [ 53.164191] ? integrity_inode_free+0x77/0x320 [ 53.168760] ? ext4_es_remove_extent+0x151/0x500 [ 53.173501] ? lock_release+0x970/0x970 [ 53.177462] ? kasan_check_write+0x14/0x20 [ 53.181687] ? do_raw_write_lock+0xbd/0x1e0 [ 53.186004] integrity_inode_free+0x12f/0x320 [ 53.190527] security_inode_free+0x19/0x90 [ 53.194752] __destroy_inode+0x328/0x820 [ 53.198798] ? generic_update_time+0x450/0x450 [ 53.203363] ? evict+0x5d8/0x980 [ 53.206758] ? lock_downgrade+0x900/0x900 [ 53.210956] ? __inode_wait_for_writeback+0x2cf/0x380 [ 53.216136] destroy_inode+0xda/0x200 [ 53.219927] ? __destroy_inode+0x820/0x820 [ 53.224152] ? kasan_check_write+0x14/0x20 [ 53.228377] ? do_raw_spin_lock+0xc1/0x230 [ 53.232596] evict+0x5e0/0x980 [ 53.235771] ? destroy_inode+0x200/0x200 [ 53.239813] ? iput+0x671/0xa90 [ 53.243076] ? lock_downgrade+0x900/0x900 [ 53.247216] ? kasan_check_read+0x11/0x20 [ 53.251355] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 53.256024] ? lock_downgrade+0x900/0x900 [ 53.260162] iput+0x679/0xa90 [ 53.263258] ? inode_add_lru+0x2a0/0x2a0 [ 53.267309] ? up_write+0x7b/0x220 [ 53.270831] ? up_read+0x110/0x110 [ 53.274351] ? up_read+0x110/0x110 [ 53.277883] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.283406] ? check_preemption_disabled+0x48/0x280 [ 53.288413] ext4_ioctl+0x236f/0x4210 [ 53.292203] ? is_bpf_text_address+0xac/0x170 [ 53.296685] ? ext4_ioctl_group_add+0x560/0x560 [ 53.301399] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 53.307190] ? kasan_check_read+0x11/0x20 [ 53.311374] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 53.316642] ? rcu_bh_qs+0xc0/0xc0 [ 53.320171] ? rcu_bh_qs+0xc0/0xc0 [ 53.323694] ? unwind_dump+0x190/0x190 [ 53.327578] ? is_bpf_text_address+0xd3/0x170 [ 53.332059] ? kernel_text_address+0x79/0xf0 [ 53.336461] ? __kernel_text_address+0xd/0x40 [ 53.340985] ? unwind_get_return_address+0x61/0xa0 [ 53.345906] ? __save_stack_trace+0x8d/0xf0 [ 53.350216] ? save_stack+0xa9/0xd0 [ 53.353825] ? save_stack+0x43/0xd0 [ 53.357431] ? __kasan_slab_free+0x102/0x150 [ 53.361822] ? kasan_slab_free+0xe/0x10 [ 53.365776] ? kmem_cache_free+0x83/0x290 [ 53.369907] ? putname+0xf2/0x130 [ 53.373346] ? do_sys_open+0x54d/0x700 [ 53.377222] ? __x64_sys_openat+0x9d/0x100 [ 53.381444] ? do_syscall_64+0x1b9/0x820 [ 53.385485] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.390836] ? trace_hardirqs_off+0xb8/0x310 [ 53.395229] ? kasan_check_read+0x11/0x20 [ 53.399367] ? do_raw_spin_unlock+0xa7/0x330 [ 53.403759] ? trace_hardirqs_on+0x310/0x310 [ 53.408151] ? kasan_check_write+0x14/0x20 [ 53.412371] ? trace_hardirqs_off+0xb8/0x310 [ 53.416777] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.422413] ? check_preemption_disabled+0x48/0x280 [ 53.427416] ? check_preemption_disabled+0x48/0x280 [ 53.432417] ? ext4_ioctl_group_add+0x560/0x560 [ 53.437075] do_vfs_ioctl+0x1de/0x1720 [ 53.440954] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 53.446213] ? ioctl_preallocate+0x300/0x300 [ 53.450604] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.456122] ? __fget_light+0x2e9/0x430 [ 53.460078] ? fget_raw+0x20/0x20 [ 53.463511] ? putname+0xf2/0x130 [ 53.466946] ? rcu_read_lock_sched_held+0x108/0x120 [ 53.471945] ? kmem_cache_free+0x24f/0x290 [ 53.476164] ? putname+0xf7/0x130 [ 53.479604] ? do_syscall_64+0x9a/0x820 [ 53.483561] ? do_syscall_64+0x9a/0x820 [ 53.487526] ? lockdep_hardirqs_on+0x421/0x5c0 [ 53.492235] ? security_file_ioctl+0x94/0xc0 [ 53.496696] ksys_ioctl+0xa9/0xd0 [ 53.500152] __x64_sys_ioctl+0x73/0xb0 [ 53.504067] do_syscall_64+0x1b9/0x820 [ 53.507949] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 53.513295] ? syscall_return_slowpath+0x5e0/0x5e0 [ 53.518210] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.523041] ? trace_hardirqs_on_caller+0x310/0x310 [ 53.528041] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 53.533042] ? prepare_exit_to_usermode+0x291/0x3b0 [ 53.538050] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.542882] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.548056] RIP: 0033:0x440099 [ 53.551234] 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 [ 53.570123] RSP: 002b:00007fff87e7e088 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 53.577816] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440099 [ 53.585072] RDX: 0000000000440099 RSI: 0000000000006611 RDI: 0000000000000003 [ 53.592428] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 53.599684] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401920 [ 53.606937] R13: 00000000004019b0 R14: 0000000000000000 R15: 0000000000000000 [ 53.614190] Modules linked in: [ 53.617500] ---[ end trace 4fa2d53b8376dbab ]--- [ 53.622297] RIP: 0010:rb_erase+0x306/0x3710 [ 53.626622] 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 [ 53.645609] RSP: 0018:ffff8801d92e6918 EFLAGS: 00010202 [ 53.651067] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 53.658468] RDX: 1ffff1003b25cd2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 53.665743] RBP: ffff8801d92e7320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 53.673040] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b76e9970 [ 53.680351] R13: dffffc0000000000 R14: ffff8801d92e72f8 R15: ffff8801d92e7438 [ 53.687659] FS: 0000000000dc7880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 53.695988] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.701907] CR2: 00000000200001c0 CR3: 00000001c1ba0000 CR4: 00000000001406e0 [ 53.709214] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.716478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.723924] Kernel panic - not syncing: Fatal exception [ 53.730210] Kernel Offset: disabled [ 53.733834] Rebooting in 86400 seconds..