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-4,10.128.0.57' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz6.accept_dad = 0
net.ipv6.conf.syz3.accept_dad = 0
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz4.accept_dad = 0
net.ipv6.conf.syz5.accept_dad = 0
net.ipv6.conf.syz7.accept_dad = 0
net.ipv6.conf.syz1.accept_dad = 0
net.ipv6.conf.syz3.router_solicitations = 0
net.ipv6.conf.syz6.router_solicitations = 0
net.ipv6.conf.syz7.router_solicitations = 0
net.ipv6.conf.syz1.router_solicitations = 0
net.ipv6.conf.syz0.router_solicitations = 0
net.ipv6.conf.syz2.accept_dad = 0
net.ipv6.conf.syz4.router_solicitations = 0
net.ipv6.conf.syz5.router_solicitations = 0
net.ipv6.conf.syz2.router_solicitations = 0
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
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
executing program
executing program
executing program
executing program
syzkaller login: [   42.805685] 
[   42.806091] =============================
[   42.809107] WARNING: suspicious RCU usage
[   42.809918] 4.13.0-rc6+ #47 Not tainted
[   42.811742] -----------------------------
[   42.813917] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
[   42.823059] 
[   42.823059] other info that might help us debug this:
[   42.823059] 
[   42.826788] 
[   42.826788] rcu_scheduler_active = 2, debug_locks = 1
[   42.849840] no locks held by syzkaller147213/4231.
[   42.857271] 
[   42.857271] stack backtrace:
[   42.872068] CPU: 1 PID: 4231 Comm: syzkaller147213 Not tainted 4.13.0-rc6+ #47
[   42.879463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   42.888785] Call Trace:
[   42.891352]  dump_stack+0x194/0x257
[   42.894953]  ? arch_local_irq_restore+0x53/0x53
[   42.899606]  lockdep_rcu_suspicious+0x123/0x170
[   42.904254]  kvm_dev_ioctl+0x877/0x1840
[   42.908195]  ? lock_downgrade+0x990/0x990
[   42.912318]  ? install_new_memslots+0x420/0x420
[   42.916972]  ? avc_has_extended_perms+0x7fa/0x12c0
[   42.921869]  ? find_held_lock+0x35/0x1d0
[   42.925911]  ? avc_ss_reset+0x110/0x110
[   42.930444]  ? lock_downgrade+0x990/0x990
[   42.934567]  ? lock_release+0xa40/0xa40
[   42.938510]  ? __lock_is_held+0xb6/0x140
[   42.942562]  ? check_same_owner+0x320/0x320
[   42.946867]  ? install_new_memslots+0x420/0x420
[   42.951514]  do_vfs_ioctl+0x1b1/0x1520
[   42.955377]  ? ioctl_preallocate+0x2b0/0x2b0
[   42.959759]  ? selinux_capable+0x40/0x40
[   42.963787]  ? lock_release+0x1d1/0xa40
[   42.967740]  ? syscall_return_slowpath+0x22f/0x450
[   42.972642]  ? security_file_ioctl+0x7d/0xb0
[   42.977015]  ? security_file_ioctl+0x89/0xb0
[   42.981392]  SyS_ioctl+0x8f/0xc0
[   42.984732]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   42.989452] RIP: 0033:0x44b419
[   42.992609] RSP: 002b:00007fe37b037dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   43.000285] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044b419
executing program
executing program
[   43.007521] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   43.014758] RBP: 0000000000000086 R08: 00007fe37b038700 R09: 00007fe37b038700
[   43.021995] R10: 00007fe37b038700 R11: 0000000000000202 R12: 0000000000000000
[   43.029232] R13: 00007ffef7b1a42f R14: 00007fe37b0389c0 R15: 0000000000000000
[   43.036703] 
[   43.038327] =============================
[   43.045520] WARNING: suspicious RCU usage
[   43.050619] 4.13.0-rc6+ #47 Not tainted
executing program
executing program
executing program
executing program
[   43.055864] -----------------------------
[   43.060250] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[   43.070826] 
[   43.070826] other info that might help us debug this:
[   43.070826] 
[   43.079956] 
[   43.079956] rcu_scheduler_active = 2, debug_locks = 1
[   43.089909] no locks held by syzkaller147213/4231.
[   43.097692] 
[   43.097692] stack backtrace:
executing program
executing program
[   43.105673] CPU: 1 PID: 4231 Comm: syzkaller147213 Not tainted 4.13.0-rc6+ #47
[   43.113016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.122355] Call Trace:
[   43.124918]  dump_stack+0x194/0x257
[   43.128520]  ? arch_local_irq_restore+0x53/0x53
[   43.133172]  lockdep_rcu_suspicious+0x123/0x170
[   43.137839]  kvm_dev_ioctl+0xd21/0x1840
[   43.141780]  ? lock_downgrade+0x990/0x990
[   43.145908]  ? install_new_memslots+0x420/0x420
[   43.150565]  ? avc_has_extended_perms+0x7fa/0x12c0
executing program
executing program
[   43.155463]  ? find_held_lock+0x35/0x1d0
[   43.159511]  ? avc_ss_reset+0x110/0x110
[   43.163456]  ? lock_downgrade+0x990/0x990
[   43.167577]  ? lock_release+0xa40/0xa40
[   43.171528]  ? __lock_is_held+0xb6/0x140
[   43.175586]  ? check_same_owner+0x320/0x320
[   43.179890]  ? install_new_memslots+0x420/0x420
[   43.184533]  do_vfs_ioctl+0x1b1/0x1520
[   43.188398]  ? ioctl_preallocate+0x2b0/0x2b0
[   43.192782]  ? selinux_capable+0x40/0x40
[   43.196816]  ? lock_release+0x1d1/0xa40
[   43.200767]  ? syscall_return_slowpath+0x22f/0x450
executing program
executing program
[   43.205674]  ? security_file_ioctl+0x7d/0xb0
[   43.210049]  ? security_file_ioctl+0x89/0xb0
[   43.214431]  SyS_ioctl+0x8f/0xc0
[   43.217773]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   43.222497] RIP: 0033:0x44b419
[   43.225654] RSP: 002b:00007fe37b037dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   43.233327] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044b419
[   43.240563] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   43.247801] RBP: 0000000000000086 R08: 00007fe37b038700 R09: 00007fe37b038700
executing program
executing program
[   43.255037] R10: 00007fe37b038700 R11: 0000000000000202 R12: 0000000000000000
[   43.262273] R13: 00007ffef7b1a42f R14: 00007fe37b0389c0 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
executing program
executing program