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-3,10.128.15.192' (ECDSA) to the list of known hosts.
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syzkaller login: [   44.066825] 
[   44.073091] =============================
[   44.075279] WARNING: suspicious RCU usage
[   44.075943] 4.13.0-rc7+ #57 Not tainted
[   44.077916] -----------------------------
[   44.078997] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
[   44.083580] 
[   44.083580] other info that might help us debug this:
[   44.083580] 
[   44.087350] 
[   44.087350] rcu_scheduler_active = 2, debug_locks = 1
[   44.096822] no locks held by syzkaller987112/5241.
[   44.105558] 
[   44.105558] stack backtrace:
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[   44.121671] CPU: 1 PID: 5241 Comm: syzkaller987112 Not tainted 4.13.0-rc7+ #57
[   44.129113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.138461] Call Trace:
[   44.141077]  dump_stack+0x194/0x257
[   44.144699]  ? arch_local_irq_restore+0x53/0x53
[   44.149382]  lockdep_rcu_suspicious+0x123/0x170
[   44.154054]  kvm_dev_ioctl+0x877/0x1840
[   44.158019]  ? lock_downgrade+0x990/0x990
[   44.162182]  ? install_new_memslots+0x420/0x420
[   44.166919]  ? avc_has_extended_perms+0x7fa/0x12c0
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[   44.171839]  ? find_held_lock+0x35/0x1d0
[   44.175912]  ? avc_ss_reset+0x110/0x110
[   44.179879]  ? lock_downgrade+0x990/0x990
[   44.184024]  ? lock_release+0xa40/0xa40
[   44.188006]  ? __lock_is_held+0xb6/0x140
[   44.192119]  ? check_same_owner+0x320/0x320
[   44.196549]  ? install_new_memslots+0x420/0x420
[   44.201352]  do_vfs_ioctl+0x1b1/0x1520
[   44.205243]  ? ioctl_preallocate+0x2b0/0x2b0
[   44.209654]  ? selinux_capable+0x40/0x40
[   44.213719]  ? lock_release+0x111/0xa40
[   44.217705]  ? syscall_return_slowpath+0x22f/0x450
[   44.222647]  ? security_file_ioctl+0x7d/0xb0
[   44.227056]  ? security_file_ioctl+0x89/0xb0
[   44.231466]  SyS_ioctl+0x8f/0xc0
[   44.234831]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.239593] RIP: 0033:0x446209
[   44.242770] RSP: 002b:00007f0461c52dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   44.250469] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446209
[   44.257728] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005
[   44.264984] RBP: 0000000000000086 R08: 00007f0461c53700 R09: 00007f0461c53700
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[   44.272239] R10: 00007f0461c53700 R11: 0000000000000246 R12: 0000000000000000
[   44.279502] R13: 00007fffd069fbdf R14: 00007f0461c539c0 R15: 0000000000000000
[   44.286933] 
[   44.302439] =============================
[   44.309388] WARNING: suspicious RCU usage
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[   44.333858] 4.13.0-rc7+ #57 Not tainted
[   44.346714] -----------------------------
[   44.354599] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[   44.370137] 
[   44.370137] other info that might help us debug this:
[   44.370137] 
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[   44.391458] 
[   44.391458] rcu_scheduler_active = 2, debug_locks = 1
[   44.410322] no locks held by syzkaller987112/5241.
[   44.430563] 
[   44.430563] stack backtrace:
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[   44.438792] CPU: 1 PID: 5241 Comm: syzkaller987112 Not tainted 4.13.0-rc7+ #57
[   44.446145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.455596] Call Trace:
[   44.458177]  dump_stack+0x194/0x257
[   44.461804]  ? arch_local_irq_restore+0x53/0x53
[   44.466493]  lockdep_rcu_suspicious+0x123/0x170
[   44.471164]  kvm_dev_ioctl+0xd21/0x1840
[   44.475153]  ? lock_downgrade+0x990/0x990
[   44.479336]  ? install_new_memslots+0x420/0x420
[   44.484015]  ? avc_has_extended_perms+0x7fa/0x12c0
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[   44.488939]  ? find_held_lock+0x35/0x1d0
[   44.493022]  ? avc_ss_reset+0x110/0x110
[   44.497017]  ? lock_downgrade+0x990/0x990
[   44.501206]  ? lock_release+0xa40/0xa40
[   44.505181]  ? __lock_is_held+0xb6/0x140
[   44.509281]  ? check_same_owner+0x320/0x320
[   44.513622]  ? install_new_memslots+0x420/0x420
[   44.518286]  do_vfs_ioctl+0x1b1/0x1520
[   44.522177]  ? ioctl_preallocate+0x2b0/0x2b0
[   44.526588]  ? selinux_capable+0x40/0x40
[   44.530664]  ? lock_release+0x111/0xa40
[   44.534641]  ? syscall_return_slowpath+0x22f/0x450
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[   44.539586]  ? security_file_ioctl+0x7d/0xb0
[   44.543985]  ? security_file_ioctl+0x89/0xb0
[   44.548393]  SyS_ioctl+0x8f/0xc0
[   44.551848]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.556942] RIP: 0033:0x446209
[   44.560118] RSP: 002b:00007f0461c52dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   44.567818] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446209
[   44.575077] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005
[   44.582341] RBP: 0000000000000086 R08: 00007f0461c53700 R09: 00007f0461c53700
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[   44.589596] R10: 00007f0461c53700 R11: 0000000000000246 R12: 0000000000000000
[   44.596854] R13: 00007fffd069fbdf R14: 00007f0461c539c0 R15: 0000000000000000
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