INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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 '10.128.0.44' (ECDSA) to the list of known hosts. 2018/04/23 13:17:33 parsed 1 programs 2018/04/23 13:17:33 executed programs: 0 syzkaller login: [ 65.084656] IPVS: ftp: loaded support on port[0] = 21 [ 65.129238] IPVS: ftp: loaded support on port[0] = 21 [ 65.168668] IPVS: ftp: loaded support on port[0] = 21 [ 65.218761] IPVS: ftp: loaded support on port[0] = 21 [ 65.261604] IPVS: ftp: loaded support on port[0] = 21 [ 65.309953] IPVS: ftp: loaded support on port[0] = 21 [ 65.357926] IPVS: ftp: loaded support on port[0] = 21 [ 65.405705] IPVS: ftp: loaded support on port[0] = 21 2018/04/23 13:17:38 executed programs: 40 2018/04/23 13:17:44 executed programs: 80 2018/04/23 13:17:49 executed programs: 120 2018/04/23 13:17:55 executed programs: 160 2018/04/23 13:18:00 executed programs: 200 2018/04/23 13:18:06 executed programs: 240 2018/04/23 13:18:11 executed programs: 280 2018/04/23 13:18:17 executed programs: 320 2018/04/23 13:18:22 executed programs: 360 2018/04/23 13:18:27 executed programs: 400 [ 122.159947] ================================================================== [ 122.167366] BUG: KMSAN: uninit-value in __list_del_entry_valid+0x19d/0x440 [ 122.174366] CPU: 0 PID: 8 Comm: rcu_sched Not tainted 4.16.0+ #87 [ 122.180577] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.189916] Call Trace: [ 122.192492] dump_stack+0x185/0x1d0 [ 122.196105] ? __list_del_entry_valid+0x19d/0x440 [ 122.200931] kmsan_report+0x142/0x240 [ 122.204713] __msan_warning_32+0x6c/0xb0 [ 122.208760] __list_del_entry_valid+0x19d/0x440 [ 122.213412] dequeue_task_fair+0xac0/0x2ea0 [ 122.218200] ? enqueue_task_fair+0x43a0/0x43a0 [ 122.222769] deactivate_task+0x50d/0x780 [ 122.226817] __schedule+0x164/0x730 [ 122.230429] ? schedule+0x1cc/0x2f0 [ 122.234038] schedule+0x1cc/0x2f0 [ 122.237474] schedule_timeout+0x3e7/0x570 [ 122.241603] ? run_local_timers+0x100/0x100 [ 122.245912] rcu_gp_kthread+0x21e1/0x38d0 [ 122.250051] ? rcu_barrier_func+0x120/0x120 [ 122.254355] kthread+0x539/0x720 [ 122.257720] ? rcu_barrier_func+0x120/0x120 [ 122.262025] ? kthread_blkcg+0xf0/0xf0 [ 122.265896] ret_from_fork+0x35/0x40 [ 122.269589] [ 122.271195] Uninit was stored to memory at: [ 122.275500] kmsan_internal_chain_origin+0x12b/0x210 [ 122.280584] __msan_chain_origin+0x69/0xc0 [ 122.284802] pick_next_task_fair+0x1e89/0x1f70 [ 122.289365] pick_next_task+0x1b4/0x410 [ 122.293320] __schedule+0x211/0x730 [ 122.296925] do_task_dead+0xa4/0xd0 [ 122.300537] do_exit+0x340e/0x38d0 [ 122.304065] do_group_exit+0x1a0/0x360 [ 122.307947] get_signal+0x1320/0x1f20 [ 122.311729] do_signal+0xb8/0x1c80 [ 122.315259] prepare_exit_to_usermode+0x271/0x3a0 [ 122.320083] syscall_return_slowpath+0xe9/0x700 [ 122.324734] do_syscall_64+0x36d/0x430 [ 122.328604] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 122.333768] Uninit was stored to memory at: [ 122.338070] kmsan_internal_chain_origin+0x12b/0x210 [ 122.343154] __msan_chain_origin+0x69/0xc0 [ 122.347373] enqueue_task_fair+0x2962/0x43a0 [ 122.351762] try_to_wake_up+0x13cc/0x20a0 [ 122.355888] wake_up_process+0x34/0x40 [ 122.359755] hrtimer_wakeup+0xac/0x100 [ 122.363624] __hrtimer_run_queues+0xc03/0x15d0 [ 122.368193] hrtimer_interrupt+0x426/0xaf0 [ 122.372411] local_apic_timer_interrupt+0x66/0x230 [ 122.377323] smp_apic_timer_interrupt+0x5a/0x90 [ 122.381969] Local variable description: ----t.i@SYSC_nanosleep [ 122.387915] Variable was created at: [ 122.391608] SYSC_nanosleep+0x5f/0x6a0 [ 122.395475] SyS_nanosleep+0x46/0x70 [ 122.399164] ================================================================== [ 122.406496] Disabling lock debugging due to kernel taint [ 122.411924] Kernel panic - not syncing: panic_on_warn set ... [ 122.411924] [ 122.419274] CPU: 0 PID: 8 Comm: rcu_sched Tainted: G B 4.16.0+ #87 [ 122.426785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.436118] Call Trace: [ 122.438692] dump_stack+0x185/0x1d0 [ 122.442311] panic+0x39d/0x940 [ 122.445505] ? __list_del_entry_valid+0x19d/0x440 [ 122.450330] kmsan_report+0x238/0x240 [ 122.454113] __msan_warning_32+0x6c/0xb0 [ 122.458156] __list_del_entry_valid+0x19d/0x440 [ 122.462807] dequeue_task_fair+0xac0/0x2ea0 [ 122.467121] ? enqueue_task_fair+0x43a0/0x43a0 [ 122.471684] deactivate_task+0x50d/0x780 [ 122.475734] __schedule+0x164/0x730 [ 122.479340] ? schedule+0x1cc/0x2f0 [ 122.482950] schedule+0x1cc/0x2f0 [ 122.486393] schedule_timeout+0x3e7/0x570 [ 122.490524] ? run_local_timers+0x100/0x100 [ 122.494830] rcu_gp_kthread+0x21e1/0x38d0 [ 122.498970] ? rcu_barrier_func+0x120/0x120 [ 122.503275] kthread+0x539/0x720 [ 122.506622] ? rcu_barrier_func+0x120/0x120 [ 122.510933] ? kthread_blkcg+0xf0/0xf0 [ 122.514802] ret_from_fork+0x35/0x40 [ 123.642221] Shutting down cpus with NMI [ 123.657917] Dumping ftrace buffer: [ 123.661442] (ftrace buffer empty) [ 123.665132] Kernel Offset: disabled [ 123.668738] Rebooting in 86400 seconds..