------------[ cut here ]------------ WARNING: arch/x86/kvm/lapic.c:3483 at kvm_apic_accept_events+0x444/0x4c0 arch/x86/kvm/lapic.c:3483, CPU#2: syz.0.2020/12841 Modules linked in: CPU: 2 UID: 0 PID: 12841 Comm: syz.0.2020 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP 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+0x444/0x4c0 arch/x86/kvm/lapic.c:3483 Code: 34 03 00 00 02 00 00 00 e9 ae fd ff ff 4c 89 ef e8 e1 eb df 00 e9 33 fc ff ff e8 a7 eb df 00 e9 17 fd ff ff e8 7d e1 76 00 90 <0f> 0b 90 e9 24 fd ff ff e8 bf eb df 00 e9 de fb ff ff e8 85 eb df RSP: 0018:ffffc900037f7c38 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff814741e7 RDX: ffff88804380a4c0 RSI: ffffffff814744c3 RDI: 0000000000000005 RBP: ffff88803ba2e800 R08: 0000000000000005 R09: 0000000000000002 R10: 0000000000000002 R11: 0000000089836ddd R12: 0000000000000001 R13: ffff88803ba2e8e0 R14: ffff888056442970 R15: 0000000000000001 FS: 00007f22160a06c0(0000) GS:ffff8880d6b60000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05cebedf98 CR3: 0000000031bf0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000009fab DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: kvm_arch_vcpu_ioctl_get_mpstate+0x103/0x3f0 arch/x86/kvm/x86.c:12147 kvm_vcpu_ioctl+0x7b8/0x1660 virt/kvm/kvm_main.c:4546 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f221518f7c9 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:00007f22160a0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f22153e6180 RCX: 00007f221518f7c9 RDX: 0000200000000040 RSI: 000000008004ae98 RDI: 000000000000000b RBP: 00007f2215213f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f22153e6218 R14: 00007f22153e6180 R15: 00007fff3d4f7a18