[info] Using makefile-style concurrent boot in runlevel 2. [ 25.205326] audit: type=1800 audit(1541590754.917:21): pid=5516 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 syzkaller login: [ 43.789337] sshd (5659) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. executing program [ 50.452949] kasan: CONFIG_KASAN_INLINE enabled [ 50.457661] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.466061] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 50.472299] CPU: 1 PID: 5673 Comm: syz-executor282 Not tainted 4.20.0-rc1-next-20181107+ #107 [ 50.480940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.490285] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 50.495716] 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 [ 50.514601] RSP: 0018:ffff8801d45b72b0 EFLAGS: 00010293 [ 50.519948] RAX: ffff8801ba7da540 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 50.527205] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d45b7338 [ 50.534460] RBP: ffff8801d45b74a0 R08: ffff8801ba7da540 R09: ffffed003b5e5b67 [ 50.541710] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801ce5ae780 [ 50.548960] R13: ffff8801d45b7338 R14: 1ffff1003a8b6e5b R15: dffffc0000000000 [ 50.556217] FS: 0000000001dc2880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 50.564428] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.570302] CR2: 0000000020000000 CR3: 000000000946a000 CR4: 00000000001406e0 [ 50.577596] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.584847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.592096] Call Trace: [ 50.594671] ? locks_remove_flock+0x236/0x350 [ 50.599150] ? flock_lock_inode+0x11c0/0x11c0 [ 50.603649] ? mark_held_locks+0x130/0x130 [ 50.607882] ? unwind_dump+0x190/0x190 [ 50.611761] ? is_bpf_text_address+0xd3/0x170 [ 50.616242] ? kernel_text_address+0x79/0xf0 [ 50.620869] ? __kernel_text_address+0xd/0x40 [ 50.625348] ? unwind_get_return_address+0x61/0xa0 [ 50.630259] ? __save_stack_trace+0x8d/0xf0 [ 50.634566] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.640136] locks_remove_file+0x148/0x5c0 [ 50.644371] ? fcntl_setlk+0xfc0/0xfc0 [ 50.648306] ? fsnotify_first_mark+0x350/0x350 [ 50.653001] ? __fsnotify_parent+0xcc/0x420 [ 50.657316] ? perf_trace_sched_process_exec+0x860/0x860 [ 50.662756] ? fsnotify+0xf20/0xf20 [ 50.666371] ? __might_sleep+0x95/0x190 [ 50.670339] __fput+0x2f0/0xa70 [ 50.673616] ? get_max_files+0x20/0x20 [ 50.677489] ? trace_hardirqs_on+0xbd/0x310 [ 50.681795] ? kasan_check_read+0x11/0x20 [ 50.685927] ? task_work_run+0x1af/0x2a0 [ 50.689971] ? trace_hardirqs_off_caller+0x300/0x300 [ 50.695060] ____fput+0x15/0x20 [ 50.698324] task_work_run+0x1e8/0x2a0 [ 50.702208] ? task_work_cancel+0x240/0x240 [ 50.706521] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 50.712041] ? switch_task_namespaces+0x9d/0xd0 [ 50.716696] do_exit+0x1ad1/0x26d0 [ 50.720223] ? lock_downgrade+0x900/0x900 [ 50.724469] ? check_preemption_disabled+0x48/0x280 [ 50.729477] ? rcu_read_unlock_special+0x181/0x1c0 [ 50.734405] ? mm_update_next_owner+0x990/0x990 [ 50.739086] ? rcu_softirq_qs+0x20/0x20 [ 50.743064] ? rcu_softirq_qs+0x20/0x20 [ 50.747026] ? unwind_dump+0x190/0x190 [ 50.750899] ? is_bpf_text_address+0xd3/0x170 [ 50.755383] ? kernel_text_address+0x79/0xf0 [ 50.759789] ? __kernel_text_address+0xd/0x40 [ 50.764270] ? unwind_get_return_address+0x61/0xa0 [ 50.769264] ? __save_stack_trace+0x8d/0xf0 [ 50.773582] ? save_stack+0xa9/0xd0 [ 50.777206] ? save_stack+0x43/0xd0 [ 50.780819] ? __kasan_slab_free+0x102/0x150 [ 50.785222] ? kasan_slab_free+0xe/0x10 [ 50.789184] ? kmem_cache_free+0x83/0x290 [ 50.793320] ? locks_free_lock+0x295/0x420 [ 50.797544] ? __x64_sys_flock+0x289/0x350 [ 50.801761] ? do_syscall_64+0x1b9/0x820 [ 50.805809] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.811162] ? trace_hardirqs_off+0xb8/0x310 [ 50.815554] ? kasan_check_read+0x11/0x20 [ 50.819683] ? do_raw_spin_unlock+0xa7/0x330 [ 50.824077] ? trace_hardirqs_off+0xb8/0x310 [ 50.828476] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.833998] ? check_preemption_disabled+0x48/0x280 [ 50.839003] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 50.844525] ? rcu_pm_notify+0xc0/0xc0 [ 50.848398] ? locks_free_lock+0x295/0x420 [ 50.852698] ? locks_free_lock+0x295/0x420 [ 50.856929] ? rcu_read_lock_sched_held+0x14f/0x180 [ 50.861933] ? kmem_cache_free+0x24f/0x290 [ 50.866152] ? locks_free_lock+0x295/0x420 [ 50.870369] ? leases_conflict+0x190/0x190 [ 50.874671] ? locks_mandatory_area+0x6a0/0x6a0 [ 50.879462] ? apparmor_path_rmdir+0x30/0x30 [ 50.883861] do_group_exit+0x177/0x440 [ 50.887737] ? trace_hardirqs_on+0xbd/0x310 [ 50.892048] ? __ia32_sys_exit+0x50/0x50 [ 50.896100] ? trace_hardirqs_off_caller+0x300/0x300 [ 50.901253] __x64_sys_exit_group+0x3e/0x50 [ 50.905568] do_syscall_64+0x1b9/0x820 [ 50.909439] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 50.914789] ? syscall_return_slowpath+0x5e0/0x5e0 [ 50.919704] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.924533] ? trace_hardirqs_on_caller+0x310/0x310 [ 50.929531] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 50.934532] ? prepare_exit_to_usermode+0x291/0x3b0 [ 50.939539] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.944388] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.949581] RIP: 0033:0x43ec48 [ 50.952765] Code: Bad RIP value. [ 50.956113] RSP: 002b:00007ffd4582f908 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 50.963803] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec48 [ 50.971113] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 50.978384] RBP: 00000000004be508 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 50.985642] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 50.992893] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 51.000148] Modules linked in: [ 51.004143] ---[ end trace 01c6e86a78e2d543 ]--- [ 51.008944] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 51.014652] 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 [ 51.033805] RSP: 0018:ffff8801d45b72b0 EFLAGS: 00010293 [ 51.039184] RAX: ffff8801ba7da540 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 51.046545] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d45b7338 [ 51.053817] RBP: ffff8801d45b74a0 R08: ffff8801ba7da540 R09: ffffed003b5e5b67 [ 51.061108] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801ce5ae780 [ 51.068398] R13: ffff8801d45b7338 R14: 1ffff1003a8b6e5b R15: dffffc0000000000 [ 51.075746] FS: 0000000001dc2880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 51.084018] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.089930] CR2: 000000000043ec1e CR3: 000000000946a000 CR4: 00000000001406e0 [ 51.097333] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.104625] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.111894] Kernel panic - not syncing: Fatal exception [ 51.118109] Kernel Offset: disabled [ 51.121732] Rebooting in 86400 seconds..