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-mmots-kasan-gce-5,10.128.0.16' (ECDSA) to the list of known hosts.
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syzkaller login: [   72.797870] 
[   72.801424] =============================
[   72.809721] WARNING: suspicious RCU usage
[   72.818576] 4.13.0-mm1+ #7 Not tainted
[   72.826642] -----------------------------
[   72.831759] ./include/linux/kvm_host.h:481 suspicious rcu_dereference_check() usage!
[   72.844729] 
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[   72.844729] other info that might help us debug this:
[   72.844729] 
[   72.862121] 
[   72.862121] rcu_scheduler_active = 2, debug_locks = 1
[   72.878057] no locks held by syzkaller225117/3101.
[   72.888517] 
[   72.888517] stack backtrace:
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[   72.893353] CPU: 1 PID: 3101 Comm: syzkaller225117 Not tainted 4.13.0-mm1+ #7
[   72.900601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.909929] Call Trace:
[   72.912496]  dump_stack+0x194/0x257
[   72.916100]  ? arch_local_irq_restore+0x53/0x53
[   72.920756]  lockdep_rcu_suspicious+0x123/0x170
[   72.925401]  kvm_dev_ioctl+0x877/0x1840
[   72.929368]  ? install_new_memslots+0x420/0x420
[   72.934030]  ? avc_has_extended_perms+0x7fa/0x12c0
[   72.938930]  ? lock_downgrade+0x990/0x990
[   72.943064]  ? avc_ss_reset+0x110/0x110
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[   72.947015]  ? lock_release+0xd70/0xd70
[   72.950971]  ? __lock_is_held+0xbc/0x140
[   72.955045]  ? check_same_owner+0x320/0x320
[   72.959341]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   72.964425]  ? install_new_memslots+0x420/0x420
[   72.969066]  do_vfs_ioctl+0x1b1/0x1530
[   72.972935]  ? ioctl_preallocate+0x2b0/0x2b0
[   72.977319]  ? selinux_capable+0x40/0x40
[   72.981365]  ? lockdep_invariant_state+0xdb/0x120
[   72.986184]  ? syscall_return_slowpath+0x2b3/0x500
[   72.991086]  ? finish_task_switch+0x4c9/0x740
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[   72.995565]  ? security_file_ioctl+0x7d/0xb0
[   72.999946]  ? security_file_ioctl+0x89/0xb0
[   73.004333]  SyS_ioctl+0x8f/0xc0
[   73.007677]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   73.012402] RIP: 0033:0x446369
[   73.015561] RSP: 002b:00007f6aeae97dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   73.023242] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446369
[   73.030486] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   73.037729] RBP: 0000000000000082 R08: 00007f6aeae98700 R09: 00007f6aeae98700
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[   73.044972] R10: 00007f6aeae98700 R11: 0000000000000246 R12: 0000000000000000
[   73.052217] R13: 00007ffd07391c7f R14: 00007f6aeae989c0 R15: 0000000000000000
[   73.059631] 
[   73.063579] =============================
[   73.067801] WARNING: suspicious RCU usage
[   73.071960] 4.13.0-mm1+ #7 Not tainted
[   73.076042] -----------------------------
[   73.082078] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[   73.092239] 
[   73.092239] other info that might help us debug this:
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[   73.092239] 
[   73.104182] 
[   73.104182] rcu_scheduler_active = 2, debug_locks = 1
[   73.113218] no locks held by syzkaller225117/3101.
[   73.119323] 
[   73.119323] stack backtrace:
[   73.124362] CPU: 1 PID: 3101 Comm: syzkaller225117 Not tainted 4.13.0-mm1+ #7
[   73.131610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   73.140932] Call Trace:
[   73.143495]  dump_stack+0x194/0x257
executing program
[   73.147099]  ? arch_local_irq_restore+0x53/0x53
[   73.151753]  lockdep_rcu_suspicious+0x123/0x170
[   73.156399]  kvm_dev_ioctl+0xd21/0x1840
[   73.160364]  ? install_new_memslots+0x420/0x420
[   73.165025]  ? avc_has_extended_perms+0x7fa/0x12c0
[   73.169924]  ? lock_downgrade+0x990/0x990
[   73.174058]  ? avc_ss_reset+0x110/0x110
[   73.178011]  ? lock_release+0xd70/0xd70
[   73.181965]  ? __lock_is_held+0xbc/0x140
[   73.186029]  ? check_same_owner+0x320/0x320
[   73.190325]  ? _raw_spin_unlock_irqrestore+0x31/0xba
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[   73.195408]  ? install_new_memslots+0x420/0x420
[   73.200047]  do_vfs_ioctl+0x1b1/0x1530
[   73.203914]  ? ioctl_preallocate+0x2b0/0x2b0
[   73.208296]  ? selinux_capable+0x40/0x40
[   73.212335]  ? lockdep_invariant_state+0xdb/0x120
[   73.217150]  ? syscall_return_slowpath+0x2b3/0x500
[   73.222048]  ? finish_task_switch+0x4c9/0x740
[   73.226540]  ? security_file_ioctl+0x7d/0xb0
[   73.230920]  ? security_file_ioctl+0x89/0xb0
[   73.235318]  SyS_ioctl+0x8f/0xc0
[   73.238665]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   73.243400] RIP: 0033:0x446369
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[   73.246559] RSP: 002b:00007f6aeae97dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   73.254239] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446369
[   73.261479] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
[   73.268719] RBP: 0000000000000082 R08: 00007f6aeae98700 R09: 00007f6aeae98700
[   73.275960] R10: 00007f6aeae98700 R11: 0000000000000246 R12: 0000000000000000
[   73.283201] R13: 00007ffd07391c7f R14: 00007f6aeae989c0 R15: 0000000000000000
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