[info] Using makefile-style concurrent boot in runlevel 2. [ 24.778694] audit: type=1800 audit(1540043288.311:21): pid=5184 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.806010] audit: type=1800 audit(1540043288.321:22): pid=5184 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 '10.128.0.71' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.917511] kasan: CONFIG_KASAN_INLINE enabled [ 42.922267] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.929681] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.935918] CPU: 1 PID: 5339 Comm: syz-executor766 Not tainted 4.19.0-rc8+ #293 [ 42.943344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.952727] RIP: 0010:rb_erase+0x306/0x3710 [ 42.957076] 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 [ 42.975965] RSP: 0018:ffff8801bb23e918 EFLAGS: 00010202 [ 42.981315] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 42.988604] RDX: 1ffff10037647d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 42.995858] RBP: ffff8801bb23f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 43.003111] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b730d970 [ 43.010376] R13: dffffc0000000000 R14: ffff8801bb23f2f8 R15: ffff8801bb23f438 [ 43.017631] FS: 00000000018ee880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 43.025853] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.031718] CR2: 0000000020000080 CR3: 00000001bb27b000 CR4: 00000000001406e0 [ 43.038971] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.046225] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.053476] Call Trace: [ 43.056061] ? lockdep_on+0x50/0x50 [ 43.059677] ? rb_insert_color+0x1460/0x1460 [ 43.064081] ? lock_downgrade+0x900/0x900 [ 43.068211] ? noop_count+0x40/0x40 [ 43.071826] ? lock_pin_lock+0x350/0x350 [ 43.075869] ? rcu_bh_qs+0xc0/0xc0 [ 43.079392] ? unwind_dump+0x190/0x190 [ 43.083262] ? kasan_check_read+0x11/0x20 [ 43.087397] ? noop_count+0x40/0x40 [ 43.091006] ? lock_pin_lock+0x350/0x350 [ 43.095056] ? mark_held_locks+0x130/0x130 [ 43.099289] ? check_usage_forwards+0x3e0/0x3e0 [ 43.103953] ? __bfs+0x385/0x7a0 [ 43.107308] ? check_usage+0x1a9/0x790 [ 43.111192] ? lock_pin_lock+0x350/0x350 [ 43.115237] ? check_usage_forwards+0x3e0/0x3e0 [ 43.119889] ? __bfs+0x385/0x7a0 [ 43.123242] ? modules_open+0xa0/0xa0 [ 43.127022] ? lockdep_on+0x50/0x50 [ 43.130632] ? lock_pin_lock+0x350/0x350 [ 43.134676] ? mark_held_locks+0x130/0x130 [ 43.138912] ? kasan_check_read+0x11/0x20 [ 43.143044] ? __lock_acquire+0x2881/0x4ec0 [ 43.147356] ? mark_held_locks+0x130/0x130 [ 43.151572] ? print_usage_bug+0xc0/0xc0 [ 43.155615] ? _raw_spin_unlock+0x2c/0x50 [ 43.159748] ? graph_lock+0x170/0x170 [ 43.163532] ? ext4_exit_mballoc+0xc0/0xc0 [ 43.167750] ? __lock_acquire+0x7ec/0x4ec0 [ 43.171984] ? find_held_lock+0x36/0x1c0 [ 43.176028] ? mark_held_locks+0x130/0x130 [ 43.180252] ? lock_downgrade+0x900/0x900 [ 43.184383] ? ext4_es_scan+0x960/0x960 [ 43.188346] ? lock_release+0x970/0x970 [ 43.192308] ? do_raw_write_trylock+0x1c0/0x1c0 [ 43.196971] ? kasan_check_write+0x14/0x20 [ 43.201192] ? lock_acquire+0x1ed/0x520 [ 43.205156] ? integrity_inode_free+0x77/0x320 [ 43.209725] ? ext4_es_remove_extent+0x151/0x500 [ 43.214461] ? lock_release+0x970/0x970 [ 43.218419] ? kasan_check_write+0x14/0x20 [ 43.222655] ? do_raw_write_lock+0xbd/0x1b0 [ 43.226962] integrity_inode_free+0x12f/0x320 [ 43.231442] security_inode_free+0x19/0x90 [ 43.235676] __destroy_inode+0x328/0x820 [ 43.239721] ? generic_update_time+0x450/0x450 [ 43.244298] ? evict+0x5d8/0x980 [ 43.247651] ? lock_downgrade+0x900/0x900 [ 43.251784] ? __inode_wait_for_writeback+0x2cf/0x380 [ 43.256957] destroy_inode+0xda/0x200 [ 43.260740] ? __destroy_inode+0x820/0x820 [ 43.264957] ? kasan_check_write+0x14/0x20 [ 43.269176] ? do_raw_spin_lock+0xc1/0x200 [ 43.273394] evict+0x5e0/0x980 [ 43.276568] ? destroy_inode+0x200/0x200 [ 43.280614] ? iput+0x671/0xa90 [ 43.283875] ? lock_downgrade+0x900/0x900 [ 43.288004] ? kasan_check_read+0x11/0x20 [ 43.292138] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 43.296707] ? lock_downgrade+0x900/0x900 [ 43.300842] iput+0x679/0xa90 [ 43.303933] ? inode_add_lru+0x2a0/0x2a0 [ 43.307981] ? up_write+0x7b/0x220 [ 43.311512] ? up_read+0x110/0x110 [ 43.315033] ? up_read+0x110/0x110 [ 43.318562] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.324103] ? check_preemption_disabled+0x48/0x200 [ 43.329132] ext4_ioctl+0x236f/0x4210 [ 43.332921] ? is_bpf_text_address+0xac/0x170 [ 43.337407] ? ext4_ioctl_group_add+0x560/0x560 [ 43.342070] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 43.347873] ? kasan_check_read+0x11/0x20 [ 43.352009] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 43.357266] ? rcu_bh_qs+0xc0/0xc0 [ 43.360791] ? rcu_bh_qs+0xc0/0xc0 [ 43.364317] ? unwind_dump+0x190/0x190 [ 43.368207] ? is_bpf_text_address+0xd3/0x170 [ 43.372686] ? kernel_text_address+0x79/0xf0 [ 43.377083] ? __kernel_text_address+0xd/0x40 [ 43.381562] ? unwind_get_return_address+0x61/0xa0 [ 43.386475] ? __save_stack_trace+0x8d/0xf0 [ 43.390783] ? save_stack+0xa9/0xd0 [ 43.394389] ? save_stack+0x43/0xd0 [ 43.397994] ? __kasan_slab_free+0x102/0x150 [ 43.402382] ? kasan_slab_free+0xe/0x10 [ 43.406341] ? kmem_cache_free+0x83/0x290 [ 43.410470] ? putname+0xf2/0x130 [ 43.413903] ? do_sys_open+0x54d/0x700 [ 43.417770] ? __x64_sys_openat+0x9d/0x100 [ 43.421987] ? do_syscall_64+0x1b9/0x820 [ 43.426030] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.431384] ? trace_hardirqs_off+0xb8/0x310 [ 43.435771] ? kasan_check_read+0x11/0x20 [ 43.439932] ? do_raw_spin_unlock+0xa7/0x2f0 [ 43.444329] ? trace_hardirqs_on+0x310/0x310 [ 43.448720] ? kasan_check_write+0x14/0x20 [ 43.452939] ? trace_hardirqs_off+0xb8/0x310 [ 43.457330] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.462853] ? check_preemption_disabled+0x48/0x200 [ 43.467856] ? check_preemption_disabled+0x48/0x200 [ 43.472859] ? ext4_ioctl_group_add+0x560/0x560 [ 43.477521] do_vfs_ioctl+0x1de/0x1720 [ 43.481397] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 43.486661] ? ioctl_preallocate+0x300/0x300 [ 43.491063] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.496585] ? __fget_light+0x2e9/0x430 [ 43.500560] ? fget_raw+0x20/0x20 [ 43.504011] ? putname+0xf2/0x130 [ 43.507449] ? rcu_read_lock_sched_held+0x108/0x120 [ 43.512451] ? kmem_cache_free+0x24f/0x290 [ 43.516684] ? putname+0xf7/0x130 [ 43.520124] ? do_syscall_64+0x9a/0x820 [ 43.524081] ? do_syscall_64+0x9a/0x820 [ 43.528038] ? lockdep_hardirqs_on+0x421/0x5c0 [ 43.532612] ? security_file_ioctl+0x94/0xc0 [ 43.537003] ksys_ioctl+0xa9/0xd0 [ 43.540442] __x64_sys_ioctl+0x73/0xb0 [ 43.544329] do_syscall_64+0x1b9/0x820 [ 43.548200] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.553569] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.558491] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.563326] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.568341] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.573344] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.578343] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.583190] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.588446] RIP: 0033:0x440009 [ 43.591624] 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 [ 43.610528] RSP: 002b:00007ffcd7fc40d8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 43.618239] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 43.625496] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 43.632751] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 43.640002] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 43.647255] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 43.654523] Modules linked in: [ 43.657830] ---[ end trace 9f22eead1822cc0b ]--- [ 43.662657] RIP: 0010:rb_erase+0x306/0x3710 [ 43.667005] 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 [ 43.685975] RSP: 0018:ffff8801bb23e918 EFLAGS: 00010202 [ 43.691429] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 43.698706] RDX: 1ffff10037647d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 43.705997] RBP: ffff8801bb23f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 43.713282] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b730d970 [ 43.720571] R13: dffffc0000000000 R14: ffff8801bb23f2f8 R15: ffff8801bb23f438 [ 43.727842] FS: 00000000018ee880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 43.736101] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.741997] CR2: 0000000020000080 CR3: 00000001bb27b000 CR4: 00000000001406e0 [ 43.749317] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.756608] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.763898] Kernel panic - not syncing: Fatal exception [ 43.770119] Kernel Offset: disabled [ 43.773743] Rebooting in 86400 seconds..