[info] Using makefile-style concurrent boot in runlevel 2. [ 24.391813] audit: type=1800 audit(1541632537.173:21): pid=5499 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.418476] audit: type=1800 audit(1541632537.173:22): pid=5499 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 syzkaller login: [ 42.524728] sshd (5641) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program [ 49.041149] kasan: CONFIG_KASAN_INLINE enabled [ 49.046130] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.054180] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.060424] CPU: 1 PID: 5655 Comm: syz-executor158 Not tainted 4.20.0-rc1-next-20181107+ #107 [ 49.069064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.078442] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 49.083952] 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 [ 49.102849] RSP: 0018:ffff8801d5b9f2b0 EFLAGS: 00010293 [ 49.108196] RAX: ffff8801ba204240 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 49.115512] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d5b9f338 [ 49.122777] RBP: ffff8801d5b9f4a0 R08: ffff8801ba204240 R09: ffffed003b5e5b67 [ 49.130034] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801ba0be800 [ 49.137310] R13: ffff8801d5b9f338 R14: 1ffff1003ab73e5b R15: dffffc0000000000 [ 49.144581] FS: 000000000181d880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 49.152800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.158663] CR2: 0000000020000040 CR3: 000000000946a000 CR4: 00000000001406e0 [ 49.165917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.173170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.180419] Call Trace: [ 49.182992] ? locks_remove_flock+0x236/0x350 [ 49.187467] ? flock_lock_inode+0x11c0/0x11c0 [ 49.191948] ? mark_held_locks+0x130/0x130 [ 49.196164] ? unwind_dump+0x190/0x190 [ 49.200037] ? is_bpf_text_address+0xd3/0x170 [ 49.204519] ? kernel_text_address+0x79/0xf0 [ 49.208913] ? __kernel_text_address+0xd/0x40 [ 49.213387] ? unwind_get_return_address+0x61/0xa0 [ 49.218300] ? __save_stack_trace+0x8d/0xf0 [ 49.222606] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.228141] locks_remove_file+0x148/0x5c0 [ 49.232371] ? fcntl_setlk+0xfc0/0xfc0 [ 49.236249] ? fsnotify_first_mark+0x350/0x350 [ 49.240822] ? __fsnotify_parent+0xcc/0x420 [ 49.245145] ? perf_trace_sched_process_exec+0x860/0x860 [ 49.250599] ? fsnotify+0xf20/0xf20 [ 49.254224] ? __might_sleep+0x95/0x190 [ 49.258183] __fput+0x2f0/0xa70 [ 49.261471] ? get_max_files+0x20/0x20 [ 49.265471] ? trace_hardirqs_on+0xbd/0x310 [ 49.269803] ? kasan_check_read+0x11/0x20 [ 49.274104] ? task_work_run+0x1af/0x2a0 [ 49.278220] ? trace_hardirqs_off_caller+0x300/0x300 [ 49.283413] ____fput+0x15/0x20 [ 49.286681] task_work_run+0x1e8/0x2a0 [ 49.290567] ? task_work_cancel+0x240/0x240 [ 49.294879] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 49.300404] ? switch_task_namespaces+0x9d/0xd0 [ 49.305069] do_exit+0x1ad1/0x26d0 [ 49.308595] ? lock_downgrade+0x900/0x900 [ 49.312726] ? check_preemption_disabled+0x48/0x280 [ 49.317733] ? rcu_read_unlock_special+0x181/0x1c0 [ 49.322659] ? mm_update_next_owner+0x990/0x990 [ 49.327309] ? rcu_softirq_qs+0x20/0x20 [ 49.331425] ? rcu_softirq_qs+0x20/0x20 [ 49.335401] ? unwind_dump+0x190/0x190 [ 49.339287] ? is_bpf_text_address+0xd3/0x170 [ 49.343770] ? kernel_text_address+0x79/0xf0 [ 49.348167] ? __kernel_text_address+0xd/0x40 [ 49.352658] ? unwind_get_return_address+0x61/0xa0 [ 49.357588] ? __save_stack_trace+0x8d/0xf0 [ 49.361904] ? save_stack+0xa9/0xd0 [ 49.365523] ? save_stack+0x43/0xd0 [ 49.369262] ? __kasan_slab_free+0x102/0x150 [ 49.373662] ? kasan_slab_free+0xe/0x10 [ 49.377794] ? kmem_cache_free+0x83/0x290 [ 49.381935] ? locks_free_lock+0x295/0x420 [ 49.386156] ? __x64_sys_flock+0x289/0x350 [ 49.390493] ? do_syscall_64+0x1b9/0x820 [ 49.394555] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.399917] ? trace_hardirqs_off+0xb8/0x310 [ 49.404314] ? kasan_check_read+0x11/0x20 [ 49.408453] ? do_raw_spin_unlock+0xa7/0x330 [ 49.412852] ? trace_hardirqs_off+0xb8/0x310 [ 49.417252] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.422775] ? check_preemption_disabled+0x48/0x280 [ 49.427788] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 49.433307] ? rcu_pm_notify+0xc0/0xc0 [ 49.437176] ? locks_free_lock+0x295/0x420 [ 49.441393] ? locks_free_lock+0x295/0x420 [ 49.445611] ? rcu_read_lock_sched_held+0x14f/0x180 [ 49.450623] ? kmem_cache_free+0x24f/0x290 [ 49.454861] ? locks_free_lock+0x295/0x420 [ 49.459083] ? leases_conflict+0x190/0x190 [ 49.463306] ? locks_mandatory_area+0x6a0/0x6a0 [ 49.467968] ? apparmor_path_rmdir+0x30/0x30 [ 49.472368] do_group_exit+0x177/0x440 [ 49.476240] ? trace_hardirqs_on+0xbd/0x310 [ 49.480553] ? __ia32_sys_exit+0x50/0x50 [ 49.484596] ? trace_hardirqs_off_caller+0x300/0x300 [ 49.489752] __x64_sys_exit_group+0x3e/0x50 [ 49.494078] do_syscall_64+0x1b9/0x820 [ 49.497958] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 49.503472] ? syscall_return_slowpath+0x5e0/0x5e0 [ 49.508384] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.513212] ? trace_hardirqs_on_caller+0x310/0x310 [ 49.518356] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 49.523363] ? prepare_exit_to_usermode+0x291/0x3b0 [ 49.528363] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.533206] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.538374] RIP: 0033:0x43efe8 [ 49.541557] Code: Bad RIP value. [ 49.544905] RSP: 002b:00007ffdcfd19218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 49.552609] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043efe8 [ 49.559857] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 49.567113] RBP: 00000000004be8a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 49.574368] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 49.581618] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 49.588983] Modules linked in: [ 49.592317] ---[ end trace 96397ecf10c169a4 ]--- [ 49.597081] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 49.602725] 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 [ 49.621812] RSP: 0018:ffff8801d5b9f2b0 EFLAGS: 00010293 [ 49.627162] RAX: ffff8801ba204240 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 49.634470] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801d5b9f338 [ 49.641783] RBP: ffff8801d5b9f4a0 R08: ffff8801ba204240 R09: ffffed003b5e5b67 [ 49.649043] R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801ba0be800 [ 49.656372] R13: ffff8801d5b9f338 R14: 1ffff1003ab73e5b R15: dffffc0000000000 [ 49.663664] FS: 000000000181d880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 49.671914] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.677785] CR2: 000000000043efbe CR3: 000000000946a000 CR4: 00000000001406e0 [ 49.685225] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.692614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.700056] Kernel panic - not syncing: Fatal exception [ 49.706564] Kernel Offset: disabled [ 49.710190] Rebooting in 86400 seconds..