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-6,10.128.0.15' (ECDSA) to the list of known hosts.
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syzkaller login: [   56.479344] 
[   56.479764] =============================
[   56.481560] WARNING: suspicious RCU usage
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[   56.501421] 4.13.0-rc5+ #43 Not tainted
[   56.518226] -----------------------------
[   56.537824] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
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[   56.577888] 
[   56.577888] other info that might help us debug this:
[   56.577888] 
[   56.593008] 
[   56.593008] rcu_scheduler_active = 2, debug_locks = 1
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[   56.624051] no locks held by syzkaller950707/8436.
[   56.631568] 
[   56.631568] stack backtrace:
[   56.650353] CPU: 0 PID: 8436 Comm: syzkaller950707 Not tainted 4.13.0-rc5+ #43
[   56.657720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.667072] Call Trace:
[   56.669649]  dump_stack+0x194/0x257
[   56.673273]  ? arch_local_irq_restore+0x53/0x53
[   56.677952]  lockdep_rcu_suspicious+0x123/0x170
[   56.682619]  kvm_dev_ioctl+0x877/0x1840
[   56.686585]  ? lock_downgrade+0x990/0x990
[   56.690736]  ? install_new_memslots+0x420/0x420
[   56.695434]  ? avc_has_extended_perms+0x7fa/0x12c0
[   56.700350]  ? find_held_lock+0x35/0x1d0
[   56.704440]  ? avc_ss_reset+0x110/0x110
[   56.708416]  ? lock_downgrade+0x990/0x990
[   56.712592]  ? lock_release+0xa40/0xa40
[   56.716558]  ? __lock_is_held+0xb6/0x140
[   56.720650]  ? check_same_owner+0x320/0x320
[   56.724967]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   56.730073]  ? install_new_memslots+0x420/0x420
[   56.734767]  do_vfs_ioctl+0x1b1/0x1520
[   56.738656]  ? ioctl_preallocate+0x2b0/0x2b0
[   56.743087]  ? selinux_capable+0x40/0x40
[   56.747167]  ? syscall_return_slowpath+0x22f/0x450
[   56.752100]  ? security_file_ioctl+0x7d/0xb0
[   56.756499]  ? security_file_ioctl+0x89/0xb0
[   56.760907]  SyS_ioctl+0x8f/0xc0
[   56.764274]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   56.769037] RIP: 0033:0x4490f9
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[   56.772244] RSP: 002b:00007f2a35a44dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   56.779966] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004490f9
[   56.787223] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
[   56.794491] RBP: 0000000000000086 R08: 00007f2a35a45700 R09: 00007f2a35a45700
[   56.801751] R10: 00007f2a35a45700 R11: 0000000000000202 R12: 0000000000000000
[   56.809008] R13: 00007ffd8eeee49f R14: 00007f2a35a459c0 R15: 0000000000000000
[   56.816597] 
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[   56.888125] =============================
[   56.893648] WARNING: suspicious RCU usage
[   56.901526] 4.13.0-rc5+ #43 Not tainted
[   56.910823] -----------------------------
[   56.930617] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
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[   56.948570] 
[   56.948570] other info that might help us debug this:
[   56.948570] 
[   56.969263] 
[   56.969263] rcu_scheduler_active = 2, debug_locks = 1
[   56.980480] no locks held by syzkaller950707/8436.
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[   56.997490] 
[   56.997490] stack backtrace:
[   57.014618] CPU: 0 PID: 8436 Comm: syzkaller950707 Not tainted 4.13.0-rc5+ #43
[   57.021974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.031311] Call Trace:
[   57.033889]  dump_stack+0x194/0x257
[   57.037516]  ? arch_local_irq_restore+0x53/0x53
[   57.042196]  lockdep_rcu_suspicious+0x123/0x170
[   57.046864]  kvm_dev_ioctl+0xd21/0x1840
[   57.050826]  ? lock_downgrade+0x990/0x990
[   57.054976]  ? install_new_memslots+0x420/0x420
[   57.059656]  ? avc_has_extended_perms+0x7fa/0x12c0
[   57.064582]  ? find_held_lock+0x35/0x1d0
[   57.068650]  ? avc_ss_reset+0x110/0x110
[   57.072612]  ? lock_downgrade+0x990/0x990
[   57.076930]  ? lock_release+0xa40/0xa40
[   57.080897]  ? __lock_is_held+0xb6/0x140
[   57.085033]  ? check_same_owner+0x320/0x320
[   57.089365]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   57.094484]  ? install_new_memslots+0x420/0x420
[   57.099142]  do_vfs_ioctl+0x1b1/0x1520
[   57.103031]  ? ioctl_preallocate+0x2b0/0x2b0
[   57.107434]  ? selinux_capable+0x40/0x40
[   57.111529]  ? syscall_return_slowpath+0x22f/0x450
[   57.116476]  ? security_file_ioctl+0x7d/0xb0
[   57.120873]  ? security_file_ioctl+0x89/0xb0
[   57.125279]  SyS_ioctl+0x8f/0xc0
[   57.128642]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   57.133384] RIP: 0033:0x4490f9
[   57.136560] RSP: 002b:00007f2a35a44dc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
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[   57.144256] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004490f9
[   57.151509] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
[   57.158767] RBP: 0000000000000086 R08: 00007f2a35a45700 R09: 00007f2a35a45700
[   57.166026] R10: 00007f2a35a45700 R11: 0000000000000202 R12: 0000000000000000
[   57.173282] R13: 00007ffd8eeee49f R14: 00007f2a35a459c0 R15: 0000000000000000
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