[info] Using makefile-style concurrent boot in runlevel 2. [ 25.184747] audit: type=1800 audit(1541586476.494:21): pid=5532 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.911843] kasan: CONFIG_KASAN_INLINE enabled [ 79.917233] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.924594] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.930812] CPU: 0 PID: 5687 Comm: syz-executor973 Not tainted 4.20.0-rc1-next-20181107+ #107 [ 79.939453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.948900] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 79.954336] Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 [ 79.973337] RSP: 0018:ffff8801bf3ef2b0 EFLAGS: 00010293 [ 79.978697] RAX: ffff8801d4d26380 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 79.985960] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801bf3ef338 [ 79.993226] RBP: ffff8801bf3ef4a0 R08: ffff8801d4d26380 R09: ffffed003b5c5b67 [ 80.000490] R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801d5a9ca00 [ 80.007747] R13: ffff8801bf3ef338 R14: 1ffff10037e7de5b R15: dffffc0000000000 [ 80.015005] FS: 0000000001754880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 80.023289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.029157] CR2: 0000000020e2aff8 CR3: 000000000946a000 CR4: 00000000001406f0 [ 80.036411] Call Trace: [ 80.038990] ? locks_remove_flock+0x236/0x350 [ 80.043477] ? flock_lock_inode+0x11c0/0x11c0 [ 80.047960] ? mark_held_locks+0x130/0x130 [ 80.052180] ? unwind_dump+0x190/0x190 [ 80.056062] ? is_bpf_text_address+0xd3/0x170 [ 80.060541] ? kernel_text_address+0x79/0xf0 [ 80.064938] ? __kernel_text_address+0xd/0x40 [ 80.069423] ? unwind_get_return_address+0x61/0xa0 [ 80.074341] ? __save_stack_trace+0x8d/0xf0 [ 80.078651] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.084173] locks_remove_file+0x148/0x5c0 [ 80.088398] ? fcntl_setlk+0xfc0/0xfc0 [ 80.092342] ? fsnotify_first_mark+0x350/0x350 [ 80.096920] ? __fsnotify_parent+0xcc/0x420 [ 80.101273] ? perf_trace_sched_process_exec+0x860/0x860 [ 80.106715] ? fsnotify+0xf20/0xf20 [ 80.110329] ? __might_sleep+0x95/0x190 [ 80.114292] __fput+0x2f0/0xa70 [ 80.117559] ? get_max_files+0x20/0x20 [ 80.121429] ? trace_hardirqs_on+0xbd/0x310 [ 80.125741] ? kasan_check_read+0x11/0x20 [ 80.129874] ? task_work_run+0x1af/0x2a0 [ 80.133921] ? trace_hardirqs_off_caller+0x300/0x300 [ 80.139013] ____fput+0x15/0x20 [ 80.142275] task_work_run+0x1e8/0x2a0 [ 80.146150] ? task_work_cancel+0x240/0x240 [ 80.150506] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 80.156034] ? switch_task_namespaces+0x9d/0xd0 [ 80.160690] do_exit+0x1ad1/0x26d0 [ 80.164214] ? lock_downgrade+0x900/0x900 [ 80.168348] ? check_preemption_disabled+0x48/0x280 [ 80.173355] ? rcu_read_unlock_special+0x181/0x1c0 [ 80.178283] ? mm_update_next_owner+0x990/0x990 [ 80.182942] ? rcu_softirq_qs+0x20/0x20 [ 80.186901] ? rcu_softirq_qs+0x20/0x20 [ 80.190856] ? unwind_dump+0x190/0x190 [ 80.194737] ? is_bpf_text_address+0xd3/0x170 [ 80.199219] ? kernel_text_address+0x79/0xf0 [ 80.203665] ? __kernel_text_address+0xd/0x40 [ 80.208154] ? unwind_get_return_address+0x61/0xa0 [ 80.213066] ? __save_stack_trace+0x8d/0xf0 [ 80.217375] ? save_stack+0xa9/0xd0 [ 80.220991] ? save_stack+0x43/0xd0 [ 80.224603] ? __kasan_slab_free+0x102/0x150 [ 80.228994] ? kasan_slab_free+0xe/0x10 [ 80.232948] ? kmem_cache_free+0x83/0x290 [ 80.237084] ? locks_free_lock+0x295/0x420 [ 80.241304] ? __x64_sys_flock+0x289/0x350 [ 80.245521] ? do_syscall_64+0x1b9/0x820 [ 80.249564] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.254946] ? trace_hardirqs_off+0xb8/0x310 [ 80.259354] ? kasan_check_read+0x11/0x20 [ 80.263486] ? do_raw_spin_unlock+0xa7/0x330 [ 80.267879] ? trace_hardirqs_off+0xb8/0x310 [ 80.272271] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.277861] ? check_preemption_disabled+0x48/0x280 [ 80.282961] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 80.288557] ? rcu_pm_notify+0xc0/0xc0 [ 80.292431] ? locks_free_lock+0x295/0x420 [ 80.296652] ? locks_free_lock+0x295/0x420 [ 80.300871] ? rcu_read_lock_sched_held+0x14f/0x180 [ 80.305869] ? kmem_cache_free+0x24f/0x290 [ 80.310085] ? locks_free_lock+0x295/0x420 [ 80.314302] ? leases_conflict+0x190/0x190 [ 80.318526] ? locks_mandatory_area+0x6a0/0x6a0 [ 80.323230] ? apparmor_path_rmdir+0x30/0x30 [ 80.327728] do_group_exit+0x177/0x440 [ 80.331609] ? trace_hardirqs_on+0xbd/0x310 [ 80.335917] ? __ia32_sys_exit+0x50/0x50 [ 80.339989] ? trace_hardirqs_off_caller+0x300/0x300 [ 80.345087] __x64_sys_exit_group+0x3e/0x50 [ 80.349394] do_syscall_64+0x1b9/0x820 [ 80.353263] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 80.358612] ? syscall_return_slowpath+0x5e0/0x5e0 [ 80.363534] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 80.368362] ? trace_hardirqs_on_caller+0x310/0x310 [ 80.373367] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 80.378375] ? prepare_exit_to_usermode+0x291/0x3b0 [ 80.383381] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 80.388215] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.393388] RIP: 0033:0x43ec48 [ 80.396570] Code: Bad RIP value. [ 80.399917] RSP: 002b:00007ffdb2ef36a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 80.407621] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec48 [ 80.414869] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 80.422122] RBP: 00000000004be508 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 80.429510] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 80.436770] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 80.444040] Modules linked in: [ 80.447543] ---[ end trace 3a3f1d9d25e65971 ]--- [ 80.452333] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 80.457886] Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 [ 80.476820] RSP: 0018:ffff8801bf3ef2b0 EFLAGS: 00010293 [ 80.482175] RAX: ffff8801d4d26380 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 80.489538] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801bf3ef338 [ 80.496824] RBP: ffff8801bf3ef4a0 R08: ffff8801d4d26380 R09: ffffed003b5c5b67 [ 80.504088] R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801d5a9ca00 [ 80.511383] R13: ffff8801bf3ef338 R14: 1ffff10037e7de5b R15: dffffc0000000000 [ 80.518665] FS: 0000000001754880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 80.526905] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.532816] CR2: 000000000043ec1e CR3: 000000000946a000 CR4: 00000000001406f0 [ 80.540226] Kernel panic - not syncing: Fatal exception [ 80.546343] Kernel Offset: disabled [ 80.549967] Rebooting in 86400 seconds..