INIT: Entering runlevel: 2
[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
2018/04/16 17:17:03 parsed 1 programs
2018/04/16 17:17:03 executed programs: 0
2018/04/16 17:17:08 executed programs: 207
2018/04/16 17:17:13 executed programs: 411
2018/04/16 17:17:18 executed programs: 615
2018/04/16 17:17:23 executed programs: 820
2018/04/16 17:17:28 executed programs: 1025
2018/04/16 17:17:33 executed programs: 1228
2018/04/16 17:17:38 executed programs: 1433
2018/04/16 17:17:43 executed programs: 1631
2018/04/16 17:17:48 executed programs: 1833
2018/04/16 17:17:53 executed programs: 2033
2018/04/16 17:17:58 executed programs: 2235
2018/04/16 17:18:03 executed programs: 2436
2018/04/16 17:18:08 executed programs: 2637
2018/04/16 17:18:13 executed programs: 2840
2018/04/16 17:18:18 executed programs: 3044
2018/04/16 17:18:23 executed programs: 3247
2018/04/16 17:18:28 executed programs: 3447
2018/04/16 17:18:33 executed programs: 3649
2018/04/16 17:18:38 executed programs: 3850
2018/04/16 17:18:43 executed programs: 4051
2018/04/16 17:18:48 executed programs: 4251
2018/04/16 17:18:53 executed programs: 4449
2018/04/16 17:18:58 executed programs: 4650
2018/04/16 17:19:03 executed programs: 4848
2018/04/16 17:19:08 executed programs: 5046
2018/04/16 17:19:13 executed programs: 5246
2018/04/16 17:19:18 executed programs: 5446
2018/04/16 17:19:23 executed programs: 5648
2018/04/16 17:19:28 executed programs: 5849
2018/04/16 17:19:33 executed programs: 6051
2018/04/16 17:19:38 executed programs: 6251
2018/04/16 17:19:43 executed programs: 6452
2018/04/16 17:19:48 executed programs: 6652
2018/04/16 17:19:53 executed programs: 6850
2018/04/16 17:19:58 executed programs: 7050
2018/04/16 17:20:03 executed programs: 7250
2018/04/16 17:20:08 executed programs: 7453
2018/04/16 17:20:13 executed programs: 7652
syzkaller login: [ 663.467115] ==================================================================
[ 663.474624] BUG: KMSAN: uninit-value in rcu_cblist_dequeue+0x1bb/0x290
[ 663.481301] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.16.0+ #84
[ 663.487506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 663.496841] Call Trace:
[ 663.499404]
[ 663.501595] dump_stack+0x185/0x1d0
[ 663.505211] ? rcu_cblist_dequeue+0x1bb/0x290
[ 663.509723] kmsan_report+0x142/0x240
[ 663.513502] __msan_warning_32+0x6c/0xb0
[ 663.517543] rcu_cblist_dequeue+0x1bb/0x290
[ 663.521878] ? delayed_put_task_struct+0x2a1/0x2e0
[ 663.526785] ? release_task+0x2530/0x2530
[ 663.530917] rcu_process_callbacks+0x17cf/0x2070
[ 663.535651] ? rcu_scheduler_starting+0xe0/0xe0
[ 663.540329] __do_softirq+0x56d/0x93d
[ 663.544135] irq_exit+0x202/0x240
[ 663.547591] exiting_irq+0xe/0x10
[ 663.551024] smp_apic_timer_interrupt+0x64/0x90
[ 663.555672] apic_timer_interrupt+0xf/0x20
[ 663.559877]
[ 663.562097] RIP: 0010:default_idle+0x1fb/0x3c0
[ 663.566653] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
[ 663.574374] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000
[ 663.581620] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 663.588866] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002
[ 663.596112] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 663.603359] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418
[ 663.610617] ? default_idle+0x6b/0x3c0
[ 663.614482] ? __sched_text_end+0x1/0x1
[ 663.618459] arch_cpu_idle+0x20/0x30
[ 663.622193] do_idle+0x349/0x790
[ 663.625559] cpu_startup_entry+0x45/0x50
[ 663.629607] rest_init+0x1c1/0x1f0
[ 663.633161] ? hpet_time_init+0x20/0xe0
[ 663.637112] start_kernel+0xf93/0xfb0
[ 663.640889] x86_64_start_kernel+0x2fa/0x310
[ 663.645307] secondary_startup_64+0xa5/0xb0
[ 663.649609]
[ 663.651211] Uninit was stored to memory at:
[ 663.655518] kmsan_internal_chain_origin+0x12b/0x210
[ 663.660600] __msan_chain_origin+0x69/0xc0
[ 663.664818] rcu_cblist_dequeue+0x1e0/0x290
[ 663.669121] rcu_process_callbacks+0x17cf/0x2070
[ 663.673855] __do_softirq+0x56d/0x93d
[ 663.677626] Uninit was stored to memory at:
[ 663.681927] kmsan_internal_chain_origin+0x12b/0x210
[ 663.687016] __msan_chain_origin+0x69/0xc0
[ 663.691235] rcu_segcblist_enqueue+0x24c/0x2d0
[ 663.695801] __call_rcu+0x227/0xef0
[ 663.699412] call_rcu_sched+0x32/0x40
[ 663.703218] evict+0xd4b/0xda0
[ 663.706384] iput+0xb85/0xf10
[ 663.709504] dentry_unlink_inode+0x84b/0x8a0
[ 663.713897] d_delete+0x1d5/0x580
[ 663.717379] devpts_pty_kill+0xf9/0x170
[ 663.721368] pty_close+0x721/0x780
[ 663.724887] tty_release+0xdf2/0x2350
[ 663.728676] __fput+0x49e/0xa10
[ 663.731931] ____fput+0x37/0x40
[ 663.735241] task_work_run+0x243/0x2c0
[ 663.739112] do_exit+0x10e1/0x38d0
[ 663.742624] do_group_exit+0x1a0/0x360
[ 663.746485] get_signal+0x1320/0x1f20
[ 663.750296] do_signal+0xb8/0x1c80
[ 663.753811] prepare_exit_to_usermode+0x271/0x3a0
[ 663.758629] syscall_return_slowpath+0xe9/0x700
[ 663.763271] do_syscall_64+0x36d/0x430
[ 663.767137] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 663.772295] Uninit was created at:
[ 663.775853] kmsan_internal_poison_shadow+0xb8/0x1b0
[ 663.780934] kmsan_kmalloc+0x94/0x100
[ 663.784716] kmem_cache_alloc+0xaab/0xb90
[ 663.788844] __d_alloc+0x8b/0xc60
[ 663.792275] d_alloc_name+0x113/0x5f0
[ 663.796058] devpts_pty_new+0x4bf/0x9b0
[ 663.800023] ptmx_open+0x4ba/0x7a0
[ 663.803539] chrdev_open+0xc20/0xd90
[ 663.807263] do_dentry_open+0xcc6/0x1430
[ 663.811298] vfs_open+0x1b7/0x2e0
[ 663.814725] path_openat+0x460a/0x6520
[ 663.818598] do_filp_open+0x261/0x640
[ 663.822380] do_sys_open+0x624/0x960
[ 663.826082] SYSC_openat+0xc7/0xe0
[ 663.829604] SyS_openat+0x63/0x90
[ 663.833031] do_syscall_64+0x309/0x430
[ 663.836900] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 663.842065] ==================================================================
[ 663.849403] Disabling lock debugging due to kernel taint
[ 663.854839] Kernel panic - not syncing: panic_on_warn set ...
[ 663.854839]
[ 663.862180] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 4.16.0+ #84
[ 663.869693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 663.879034] Call Trace:
[ 663.881601]
[ 663.883732] dump_stack+0x185/0x1d0
[ 663.887336] panic+0x39d/0x940
[ 663.890515] ? rcu_cblist_dequeue+0x1bb/0x290
[ 663.894988] kmsan_report+0x238/0x240
[ 663.898768] __msan_warning_32+0x6c/0xb0
[ 663.902805] rcu_cblist_dequeue+0x1bb/0x290
[ 663.907106] ? delayed_put_task_struct+0x2a1/0x2e0
[ 663.912021] ? release_task+0x2530/0x2530
[ 663.916147] rcu_process_callbacks+0x17cf/0x2070
[ 663.920883] ? rcu_scheduler_starting+0xe0/0xe0
[ 663.925544] __do_softirq+0x56d/0x93d
[ 663.929342] irq_exit+0x202/0x240
[ 663.932790] exiting_irq+0xe/0x10
[ 663.936219] smp_apic_timer_interrupt+0x64/0x90
[ 663.940871] apic_timer_interrupt+0xf/0x20
[ 663.945082]
[ 663.947301] RIP: 0010:default_idle+0x1fb/0x3c0
[ 663.951853] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
[ 663.959550] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000
[ 663.966797] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 663.974053] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002
[ 663.981318] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 663.988569] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418
[ 663.995835] ? default_idle+0x6b/0x3c0
[ 663.999707] ? __sched_text_end+0x1/0x1
[ 664.003665] arch_cpu_idle+0x20/0x30
[ 664.007366] do_idle+0x349/0x790
[ 664.010733] cpu_startup_entry+0x45/0x50
[ 664.014783] rest_init+0x1c1/0x1f0
[ 664.018302] ? hpet_time_init+0x20/0xe0
[ 664.022254] start_kernel+0xf93/0xfb0
[ 664.026033] x86_64_start_kernel+0x2fa/0x310
[ 664.030434] secondary_startup_64+0xa5/0xb0
[ 664.035144] Dumping ftrace buffer:
[ 664.038661] (ftrace buffer empty)
[ 664.042345] Kernel Offset: disabled
[ 664.045951] Rebooting in 86400 seconds..