syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 5496 at arch/x86/kvm/lapic.c:3483 kvm_apic_accept_events+0x341/0x490 arch/x86/kvm/lapic.c:3483
Modules linked in:
CPU: 0 UID: 0 PID: 5496 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:kvm_apic_accept_events+0x341/0x490 arch/x86/kvm/lapic.c:3483
Code: eb 0c e8 32 da 71 00 eb 05 e8 2b da 71 00 45 31 ff 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 10 da 71 00 90 <0f> 0b 90 e9 ec fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 4f
RSP: 0018:ffffc90002acfbf0 EFLAGS: 00010293
RAX: ffffffff814e3940 RBX: 0000000000000002 RCX: ffff8880005c4900
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff814689b6
R10: dffffc0000000000 R11: ffffed100827c008 R12: 0000000000000002
R13: dffffc0000000000 R14: ffff888032de9200 R15: ffff8880413e02d8
FS:  0000555570b9c500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 00000000115bf000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 kvm_arch_vcpu_ioctl_get_mpstate+0x128/0x480 arch/x86/kvm/x86.c:12147
 kvm_vcpu_ioctl+0x625/0xe90 virt/kvm/kvm_main.c:4539
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3bdab8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff9c843d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3bdade5fa0 RCX: 00007f3bdab8f749
RDX: 0000000000000000 RSI: 000000008004ae98 RDI: 0000000000000005
RBP: 00007f3bdac13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3bdade5fa0 R14: 00007f3bdade5fa0 R15: 0000000000000003
 </TASK>