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 'ci-upstream-kasan-gce-6,10.128.15.198' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [   57.852464] 
[   57.863942] =============================
[   57.873306] WARNING: suspicious RCU usage
[   57.878970] 4.13.0+ #69 Not tainted
[   57.885412] -----------------------------
executing program
executing program
executing program
[   57.902734] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
[   57.913635] 
[   57.913635] other info that might help us debug this:
[   57.913635] 
executing program
executing program
executing program
[   57.945917] 
[   57.945917] rcu_scheduler_active = 2, debug_locks = 1
[   57.963860] no locks held by syzkaller318797/3194.
[   57.969417] 
[   57.969417] stack backtrace:
[   57.977473] CPU: 0 PID: 3194 Comm: syzkaller318797 Not tainted 4.13.0+ #69
[   57.984467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.993812] Call Trace:
executing program
[   57.996376]  dump_stack+0x194/0x257
[   57.999981]  ? arch_local_irq_restore+0x53/0x53
[   58.004639]  lockdep_rcu_suspicious+0x123/0x170
[   58.009287]  kvm_dev_ioctl+0x877/0x1840
[   58.013243]  ? install_new_memslots+0x420/0x420
[   58.017901]  ? avc_has_extended_perms+0x7fa/0x12c0
[   58.022802]  ? lock_downgrade+0x990/0x990
[   58.026929]  ? avc_ss_reset+0x110/0x110
[   58.030905]  ? lock_release+0xd70/0xd70
[   58.034863]  ? __lock_is_held+0xbc/0x140
[   58.038936]  ? check_same_owner+0x320/0x320
executing program
[   58.043231]  ? rcu_pm_notify+0xc0/0xc0
[   58.047102]  ? install_new_memslots+0x420/0x420
[   58.051758]  do_vfs_ioctl+0x1b1/0x1530
[   58.055623]  ? ioctl_preallocate+0x2b0/0x2b0
[   58.060009]  ? selinux_capable+0x40/0x40
[   58.064059]  ? __lock_acquire+0x29e1/0x4620
[   58.068362]  ? lockdep_sys_exit+0x4b/0xf0
[   58.072486]  ? syscall_return_slowpath+0x2b3/0x500
[   58.077389]  ? finish_task_switch+0x1aa/0x740
[   58.081866]  ? security_file_ioctl+0x7d/0xb0
[   58.086243]  ? security_file_ioctl+0x89/0xb0
[   58.090627]  SyS_ioctl+0x8f/0xc0
[   58.093976]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   58.098702] RIP: 0033:0x4462f9
[   58.101862] RSP: 002b:00007f93e6c9bdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   58.109556] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004462f9
[   58.116812] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   58.124068] RBP: 0000000000000082 R08: 00007f93e6c9c700 R09: 00007f93e6c9c700
[   58.131322] R10: 00007f93e6c9c700 R11: 0000000000000246 R12: 0000000000000000
[   58.138578] R13: 00007fffdf18af5f R14: 00007f93e6c9c9c0 R15: 0000000000000000
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[   58.146093] 
[   58.149619] =============================
[   58.153853] WARNING: suspicious RCU usage
[   58.159575] 4.13.0+ #69 Not tainted
[   58.164476] -----------------------------
[   58.168927] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[   58.185444] 
[   58.185444] other info that might help us debug this:
[   58.185444] 
executing program
[   58.202150] 
[   58.202150] rcu_scheduler_active = 2, debug_locks = 1
[   58.212246] no locks held by syzkaller318797/3194.
[   58.217275] 
[   58.217275] stack backtrace:
[   58.222260] CPU: 0 PID: 3194 Comm: syzkaller318797 Not tainted 4.13.0+ #69
[   58.229291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.238624] Call Trace:
[   58.241189]  dump_stack+0x194/0x257
[   58.244795]  ? arch_local_irq_restore+0x53/0x53
executing program
[   58.249456]  lockdep_rcu_suspicious+0x123/0x170
[   58.254113]  kvm_dev_ioctl+0xd21/0x1840
[   58.258080]  ? install_new_memslots+0x420/0x420
[   58.262747]  ? avc_has_extended_perms+0x7fa/0x12c0
[   58.267662]  ? lock_downgrade+0x990/0x990
[   58.271801]  ? avc_ss_reset+0x110/0x110
[   58.275757]  ? lock_release+0xd70/0xd70
[   58.279728]  ? __lock_is_held+0xbc/0x140
[   58.283792]  ? check_same_owner+0x320/0x320
[   58.288094]  ? rcu_pm_notify+0xc0/0xc0
[   58.291976]  ? install_new_memslots+0x420/0x420
[   58.296627]  do_vfs_ioctl+0x1b1/0x1530
[   58.300505]  ? ioctl_preallocate+0x2b0/0x2b0
[   58.304891]  ? selinux_capable+0x40/0x40
[   58.308933]  ? __lock_acquire+0x29e1/0x4620
[   58.313235]  ? lockdep_sys_exit+0x4b/0xf0
[   58.317373]  ? syscall_return_slowpath+0x2b3/0x500
[   58.322280]  ? finish_task_switch+0x1aa/0x740
[   58.326759]  ? security_file_ioctl+0x7d/0xb0
[   58.331139]  ? security_file_ioctl+0x89/0xb0
[   58.335533]  SyS_ioctl+0x8f/0xc0
[   58.338888]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   58.343620] RIP: 0033:0x4462f9
executing program
executing program
executing program
executing program
executing program
executing program
[   58.346788] RSP: 002b:00007f93e6c9bdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   58.354481] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004462f9
[   58.361731] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   58.368980] RBP: 0000000000000082 R08: 00007f93e6c9c700 R09: 00007f93e6c9c700
[   58.376226] R10: 00007f93e6c9c700 R11: 0000000000000246 R12: 0000000000000000
[   58.383471] R13: 00007fffdf18af5f R14: 00007f93e6c9c9c0 R15: 0000000000000000
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program