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-8,10.128.0.59' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz3.accept_dad = 0
net.ipv6.conf.syz5.accept_dad = 0
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz4.accept_dad = 0
net.ipv6.conf.syz6.accept_dad = 0
net.ipv6.conf.syz1.accept_dad = 0
net.ipv6.conf.syz7.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
net.ipv6.conf.syz3.router_solicitations = 0
net.ipv6.conf.syz2.accept_dad = 0
net.ipv6.conf.syz5.router_solicitations = 0
net.ipv6.conf.syz7.router_solicitations = 0
net.ipv6.conf.syz6.router_solicitations = 0
net.ipv6.conf.syz1.router_solicitations = 0
net.ipv6.conf.syz4.router_solicitations = 0
net.ipv6.conf.syz2.router_solicitations = 0
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syzkaller login: [   44.689386] 
[   44.689716] =============================
[   44.692532] WARNING: suspicious RCU usage
[   44.695329] 4.13.0-rc6+ #44 Not tainted
[   44.696451] -----------------------------
[   44.709909] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
[   44.719159] 
[   44.719159] other info that might help us debug this:
[   44.719159] 
[   44.729940] 
[   44.729940] rcu_scheduler_active = 2, debug_locks = 1
executing program
executing program
[   44.740233] no locks held by syzkaller938479/3665.
[   44.751816] 
[   44.751816] stack backtrace:
[   44.769559] CPU: 1 PID: 3665 Comm: syzkaller938479 Not tainted 4.13.0-rc6+ #44
[   44.776920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.786252] Call Trace:
[   44.788826]  dump_stack+0x194/0x257
[   44.792430]  ? arch_local_irq_restore+0x53/0x53
[   44.797086]  lockdep_rcu_suspicious+0x123/0x170
[   44.801734]  kvm_dev_ioctl+0x877/0x1840
[   44.805674]  ? lock_downgrade+0x990/0x990
[   44.809797]  ? install_new_memslots+0x420/0x420
[   44.814451]  ? avc_has_extended_perms+0x7fa/0x12c0
[   44.819350]  ? find_held_lock+0x35/0x1d0
[   44.823401]  ? avc_ss_reset+0x110/0x110
[   44.827344]  ? lock_downgrade+0x990/0x990
[   44.831469]  ? lock_release+0xa40/0xa40
[   44.835416]  ? __lock_is_held+0xb6/0x140
[   44.839473]  ? check_same_owner+0x320/0x320
[   44.843766]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   44.848854]  ? install_new_memslots+0x420/0x420
[   44.853494]  do_vfs_ioctl+0x1b1/0x1520
[   44.857352]  ? ioctl_preallocate+0x2b0/0x2b0
[   44.861737]  ? selinux_capable+0x40/0x40
[   44.865778]  ? syscall_return_slowpath+0x22f/0x450
[   44.870682]  ? security_file_ioctl+0x7d/0xb0
[   44.875059]  ? security_file_ioctl+0x89/0xb0
[   44.879442]  SyS_ioctl+0x8f/0xc0
[   44.882782]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.887502] RIP: 0033:0x44e2a9
executing program
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executing program
[   44.890658] RSP: 002b:00007f58f7446dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   44.898336] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044e2a9
[   44.905578] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006
[   44.912818] RBP: 0000000000000086 R08: 00007f58f7447700 R09: 00007f58f7447700
[   44.920056] R10: 00007f58f7447700 R11: 0000000000000202 R12: 0000000000000000
[   44.927296] R13: 00007ffd92c7d35f R14: 00007f58f74479c0 R15: 0000000000000000
[   44.934845] 
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[   44.943134] =============================
[   44.947743] WARNING: suspicious RCU usage
[   44.954089] 4.13.0-rc6+ #44 Not tainted
[   44.962977] -----------------------------
[   44.973162] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[   44.986053] 
[   44.986053] other info that might help us debug this:
[   44.986053] 
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[   45.016303] 
[   45.016303] rcu_scheduler_active = 2, debug_locks = 1
[   45.031173] no locks held by syzkaller938479/3665.
[   45.039852] 
[   45.039852] stack backtrace:
[   45.055107] CPU: 1 PID: 3665 Comm: syzkaller938479 Not tainted 4.13.0-rc6+ #44
executing program
executing program
executing program
[   45.062461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.071786] Call Trace:
[   45.074348]  dump_stack+0x194/0x257
[   45.077956]  ? arch_local_irq_restore+0x53/0x53
[   45.082607]  lockdep_rcu_suspicious+0x123/0x170
[   45.087260]  kvm_dev_ioctl+0xd21/0x1840
[   45.091204]  ? lock_downgrade+0x990/0x990
[   45.095333]  ? install_new_memslots+0x420/0x420
[   45.099990]  ? avc_has_extended_perms+0x7fa/0x12c0
[   45.104898]  ? find_held_lock+0x35/0x1d0
[   45.108939]  ? avc_ss_reset+0x110/0x110
[   45.112880]  ? lock_downgrade+0x990/0x990
[   45.117000]  ? lock_release+0xa40/0xa40
[   45.120946]  ? __lock_is_held+0xb6/0x140
[   45.125001]  ? check_same_owner+0x320/0x320
[   45.129296]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   45.134385]  ? install_new_memslots+0x420/0x420
[   45.139028]  do_vfs_ioctl+0x1b1/0x1520
[   45.142893]  ? ioctl_preallocate+0x2b0/0x2b0
[   45.147275]  ? selinux_capable+0x40/0x40
[   45.151319]  ? syscall_return_slowpath+0x22f/0x450
[   45.156228]  ? security_file_ioctl+0x7d/0xb0
[   45.160605]  ? security_file_ioctl+0x89/0xb0
[   45.164985]  SyS_ioctl+0x8f/0xc0
[   45.168327]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   45.173051] RIP: 0033:0x44e2a9
[   45.176210] RSP: 002b:00007f58f7446dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   45.183889] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044e2a9
[   45.191133] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006
[   45.198387] RBP: 0000000000000086 R08: 00007f58f7447700 R09: 00007f58f7447700
[   45.205645] R10: 00007f58f7447700 R11: 0000000000000202 R12: 0000000000000000
executing program
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[   45.212896] R13: 00007ffd92c7d35f R14: 00007f58f74479c0 R15: 0000000000000000
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