[info] Using makefile-style concurrent boot in runlevel 2. [ 23.085231] audit: type=1800 audit(1541625197.420:21): pid=5476 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 23.117616] audit: type=1800 audit(1541625197.430:22): pid=5476 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: [ 42.844259] sshd (5619) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts. executing program [ 67.549428] kasan: CONFIG_KASAN_INLINE enabled [ 67.554100] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.561542] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.567771] CPU: 0 PID: 5633 Comm: syz-executor112 Not tainted 4.20.0-rc1-next-20181107+ #107 [ 67.576424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.585892] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 67.591331] 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 [ 67.610218] RSP: 0018:ffff8801ba6ff2b0 EFLAGS: 00010293 [ 67.615746] RAX: ffff8801d7440500 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 67.623015] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801ba6ff338 [ 67.630274] RBP: ffff8801ba6ff4a0 R08: ffff8801d7440500 R09: ffffed003b5c5b67 [ 67.637532] R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801d85bfcc0 [ 67.644786] R13: ffff8801ba6ff338 R14: 1ffff100374dfe5b R15: dffffc0000000000 [ 67.652154] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 67.660387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.666256] CR2: 0000000020000240 CR3: 000000000946a000 CR4: 00000000001406f0 [ 67.673620] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.680885] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.688158] Call Trace: [ 67.690747] ? locks_remove_flock+0x236/0x350 [ 67.695226] ? flock_lock_inode+0x11c0/0x11c0 [ 67.699778] ? mark_held_locks+0x130/0x130 [ 67.704020] ? unwind_dump+0x190/0x190 [ 67.707912] ? is_bpf_text_address+0xd3/0x170 [ 67.712399] ? kernel_text_address+0x79/0xf0 [ 67.716816] ? __kernel_text_address+0xd/0x40 [ 67.721309] ? unwind_get_return_address+0x61/0xa0 [ 67.726233] ? __save_stack_trace+0x8d/0xf0 [ 67.730549] locks_remove_file+0x148/0x5c0 [ 67.734774] ? fcntl_setlk+0xfc0/0xfc0 [ 67.738646] ? perf_trace_sched_process_exec+0x860/0x860 [ 67.744094] ? do_exit+0xf4d/0x26d0 [ 67.747826] ? __might_sleep+0x95/0x190 [ 67.751800] __fput+0x2f0/0xa70 [ 67.755070] ? get_max_files+0x20/0x20 [ 67.758963] ? trace_hardirqs_on+0xbd/0x310 [ 67.763274] ? kasan_check_read+0x11/0x20 [ 67.767410] ? task_work_run+0x1af/0x2a0 [ 67.771460] ? trace_hardirqs_off_caller+0x300/0x300 [ 67.776574] ____fput+0x15/0x20 [ 67.779849] task_work_run+0x1e8/0x2a0 [ 67.783795] ? task_work_cancel+0x240/0x240 [ 67.788128] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 67.793710] ? switch_task_namespaces+0x9d/0xd0 [ 67.798382] do_exit+0x1ad1/0x26d0 [ 67.802012] ? lock_downgrade+0x900/0x900 [ 67.806161] ? check_preemption_disabled+0x48/0x280 [ 67.811179] ? rcu_read_unlock_special+0x181/0x1c0 [ 67.816101] ? mm_update_next_owner+0x990/0x990 [ 67.820758] ? rcu_softirq_qs+0x20/0x20 [ 67.824716] ? rcu_softirq_qs+0x20/0x20 [ 67.828675] ? unwind_dump+0x190/0x190 [ 67.832571] ? is_bpf_text_address+0xd3/0x170 [ 67.837062] ? kernel_text_address+0x79/0xf0 [ 67.841487] ? __kernel_text_address+0xd/0x40 [ 67.845981] ? unwind_get_return_address+0x61/0xa0 [ 67.850905] ? __save_stack_trace+0x8d/0xf0 [ 67.855404] ? save_stack+0xa9/0xd0 [ 67.859043] ? save_stack+0x43/0xd0 [ 67.862659] ? __kasan_slab_free+0x102/0x150 [ 67.867054] ? kasan_slab_free+0xe/0x10 [ 67.871022] ? kmem_cache_free+0x83/0x290 [ 67.875182] ? locks_free_lock+0x295/0x420 [ 67.879415] ? __x64_sys_flock+0x289/0x350 [ 67.883635] ? do_syscall_64+0x1b9/0x820 [ 67.887680] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.893053] ? trace_hardirqs_off+0xb8/0x310 [ 67.897473] ? kasan_check_read+0x11/0x20 [ 67.901624] ? do_raw_spin_unlock+0xa7/0x330 [ 67.906074] ? trace_hardirqs_off+0xb8/0x310 [ 67.910502] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.916181] ? check_preemption_disabled+0x48/0x280 [ 67.921196] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 67.926728] ? rcu_pm_notify+0xc0/0xc0 [ 67.930606] ? locks_free_lock+0x295/0x420 [ 67.934850] ? locks_free_lock+0x295/0x420 [ 67.939077] ? rcu_read_lock_sched_held+0x14f/0x180 [ 67.944097] ? kmem_cache_free+0x24f/0x290 [ 67.948334] ? locks_free_lock+0x295/0x420 [ 67.952581] ? leases_conflict+0x190/0x190 [ 67.956822] ? locks_mandatory_area+0x6a0/0x6a0 [ 67.961496] ? apparmor_path_rmdir+0x30/0x30 [ 67.965898] do_group_exit+0x177/0x440 [ 67.969777] ? trace_hardirqs_on+0xbd/0x310 [ 67.974190] ? __ia32_sys_exit+0x50/0x50 [ 67.978299] ? trace_hardirqs_off_caller+0x300/0x300 [ 67.983408] __x64_sys_exit_group+0x3e/0x50 [ 67.987725] do_syscall_64+0x1b9/0x820 [ 67.991684] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 67.997061] ? syscall_return_slowpath+0x5e0/0x5e0 [ 68.001994] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.006836] ? trace_hardirqs_on_caller+0x310/0x310 [ 68.011961] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 68.016980] ? prepare_exit_to_usermode+0x291/0x3b0 [ 68.022008] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 68.026955] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.032228] RIP: 0033:0x43ec68 [ 68.035472] Code: Bad RIP value. [ 68.038832] RSP: 002b:00007fffd7cbebb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 68.046544] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec68 [ 68.053816] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 68.061077] RBP: 00000000004be528 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 68.068428] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 68.075986] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 68.083260] Modules linked in: [ 68.086984] ---[ end trace 3562830ca6c0716e ]--- [ 68.092076] RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 [ 68.097596] 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 [ 68.116803] RSP: 0018:ffff8801ba6ff2b0 EFLAGS: 00010293 [ 68.122237] RAX: ffff8801d7440500 RBX: 894cdffffc000000 RCX: ffffffff81ed555d [ 68.129539] RDX: 0000000000000000 RSI: ffffffff81ed5c9e RDI: ffff8801ba6ff338 [ 68.137063] RBP: ffff8801ba6ff4a0 R08: ffff8801d7440500 R09: ffffed003b5c5b67 [ 68.144563] R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801d85bfcc0 [ 68.151850] R13: ffff8801ba6ff338 R14: 1ffff100374dfe5b R15: dffffc0000000000 [ 68.159294] FS: 000000000164a880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 68.167545] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.173573] CR2: 000000000043ec3e CR3: 000000000946a000 CR4: 00000000001406f0 [ 68.181262] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.188663] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.195921] Kernel panic - not syncing: Fatal exception [ 68.202395] Kernel Offset: disabled [ 68.206026] Rebooting in 86400 seconds..