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-386-4,10.128.0.32' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   25.393065] WARNING: CPU: 1 PID: 3039 at sound/core/timer_compat.c:69 snd_timer_user_info_compat.isra.6+0x3be/0x490
[   25.394587] Kernel panic - not syncing: panic_on_warn set ...
[   25.394587] 
[   25.395560] CPU: 1 PID: 3039 Comm: syzkaller881964 Not tainted 4.14.0+ #98
[   25.396504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   25.397760] Call Trace:
[   25.398124]  dump_stack+0x194/0x257
[   25.398617]  ? arch_local_irq_restore+0x53/0x53
[   25.399246]  ? vsnprintf+0x1ed/0x1900
[   25.399765]  panic+0x1e4/0x41c
[   25.400201]  ? refcount_error_report+0x214/0x214
[   25.400863]  ? show_regs_print_info+0x65/0x65
[   25.401470]  ? __warn+0x1c1/0x200
[   25.401944]  ? snd_timer_user_info_compat.isra.6+0x3be/0x490
[   25.402713]  __warn+0x1dc/0x200
[   25.403159]  ? snd_timer_user_info_compat.isra.6+0x3be/0x490
[   25.403941]  report_bug+0x211/0x2d0
[   25.404441]  fixup_bug.part.11+0x37/0x80
[   25.404989]  do_error_trap+0x2d7/0x3e0
[   25.405517]  ? math_error+0x400/0x400
[   25.406037]  ? avc_has_extended_perms+0x7fa/0x12c0
[   25.406697]  ? do_raw_spin_trylock+0x190/0x190
[   25.407316]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   25.407969]  do_invalid_op+0x1b/0x20
[   25.408471]  invalid_op+0x18/0x20
[   25.408989] RIP: 0010:snd_timer_user_info_compat.isra.6+0x3be/0x490
[   25.409832] RSP: 0018:ffff8801cd037a70 EFLAGS: 00010293
[   25.410546] RAX: ffff8801cd96a280 RBX: 1ffff10039a06f51 RCX: ffffffff8402d83e
[   25.411503] RDX: 0000000000000000 RSI: 0000000020a73000 RDI: ffff8801cd2b6eb0
[   25.412457] RBP: ffff8801cd037bd0 R08: ffffffff8403ab4b R09: 0000000000000000
[   25.414734] R10: ffff8801cd037bd0 R11: ffffffff8747dd60 R12: 0000000000000000
[   25.421972] R13: dffffc0000000000 R14: ffff8801cd037ba8 R15: ffff8801cd037d18
[   25.429223]  ? snd_timer_user_ioctl_compat+0xbb/0x890
[   25.434381]  ? snd_timer_user_info_compat.isra.6+0x3be/0x490
[   25.440161]  ? snd_timer_user_tinterrupt+0x960/0x960
[   25.445244]  ? trace_event_raw_event_sched_switch+0x8a0/0x8a0
[   25.451103]  ? rcu_note_context_switch+0x710/0x710
[   25.456016]  snd_timer_user_ioctl_compat+0x4a6/0x890
[   25.461095]  ? __snd_timer_user_ioctl+0x2fe0/0x2fe0
[   25.466084]  ? selinux_capable+0x40/0x40
[   25.470388]  ? srcu_invoke_callbacks+0x81/0x4d0
[   25.475032]  ? kmem_cache_free+0x249/0x280
[   25.479238]  ? putname+0xf3/0x130
[   25.482668]  ? security_file_ioctl+0x7d/0xb0
[   25.487045]  ? security_file_ioctl+0x89/0xb0
[   25.491430]  compat_SyS_ioctl+0x151/0x2a30
[   25.495634]  ? do_fast_syscall_32+0x156/0xf9d
[   25.500100]  ? __snd_timer_user_ioctl+0x2fe0/0x2fe0
[   25.505086]  ? do_ioctl+0x60/0x60
[   25.508509]  do_fast_syscall_32+0x3ee/0xf9d
[   25.512805]  ? do_int80_syscall_32+0x9d0/0x9d0
[   25.517357]  ? kasan_check_read+0x11/0x20
[   25.521477]  ? syscall_return_slowpath+0x550/0x550
[   25.526380]  ? SyS_rt_sigaction+0x94/0x1b0
[   25.530591]  ? sysret32_from_system_call+0x5/0x3b
[   25.535412]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   25.540232]  entry_SYSENTER_compat+0x51/0x60
[   25.544607] RIP: 0023:0xf7f8dc79
[   25.547939] RSP: 002b:00000000ffcd112c EFLAGS: 00000282 ORIG_RAX: 0000000000000036
[   25.555614] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000080e05411
[   25.562873] RDX: 0000000020a73000 RSI: 00000000080ef00c RDI: 000000000000003f
[   25.570114] RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000
[   25.577365] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   25.584604] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   25.592009] Dumping ftrace buffer:
[   25.595571]    (ftrace buffer empty)
[   25.599251] Kernel Offset: disabled
[   25.602848] Rebooting in 86400 seconds..