L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5327 Comm: syz-executor571 Not tainted 4.19.0-rc5+ #160
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x237/0x4ec0 kernel/locking/lockdep.c:3290
Code: 28 00 00 00 0f 85 aa 33 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 35 00 00 49 81 7d 00 20 c6 8e 8a 0f 84 54 ff
RSP: 0018:ffff8801ccfb7030 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 1ffff100399f6e82 RCX: 0000000000000000
RDX: 0000000000000039 RSI: 0000000000000000 RDI: ffffffff89723ac0
RBP: ffff8801ccfb73b8 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000000001c8 R14: ffff8801d8cf4640 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801dad00000(0063) knlGS:00000000081bd840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000280 CR3: 00000001d9106000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 kvm_ioapic_scan_entry+0x7f/0x3c0 arch/x86/kvm/ioapic.c:246
 vcpu_scan_ioapic arch/x86/kvm/x86.c:7316 [inline]
 vcpu_enter_guest+0x492f/0x62b0 arch/x86/kvm/x86.c:7458
 vcpu_run arch/x86/kvm/x86.c:7730 [inline]
 kvm_arch_vcpu_ioctl_run+0x375/0x16e0 arch/x86/kvm/x86.c:7930
 kvm_vcpu_ioctl+0x72b/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590
 kvm_vcpu_compat_ioctl+0x210/0x4a0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2785
 __do_compat_sys_ioctl fs/compat_ioctl.c:1419 [inline]
 __se_compat_sys_ioctl fs/compat_ioctl.c:1365 [inline]
 __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:1365
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fcfca9
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffbbb9ec EFLAGS: 00000207 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000000ae80
RDX: 0000000000000000 RSI: 0000000000000036 RDI: 0000000000000005
RBP: 000000004008ae89 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace f8d31e3a49e49cee ]---
RIP: 0010:__lock_acquire+0x237/0x4ec0 kernel/locking/lockdep.c:3290
Code: 28 00 00 00 0f 85 aa 33 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 35 00 00 49 81 7d 00 20 c6 8e 8a 0f 84 54 ff
RSP: 0018:ffff8801ccfb7030 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 1ffff100399f6e82 RCX: 0000000000000000
RDX: 0000000000000039 RSI: 0000000000000000 RDI: ffffffff89723ac0
RBP: ffff8801ccfb73b8 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000000001c8 R14: ffff8801d8cf4640 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801dad00000(0063) knlGS:00000000081bd840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000280 CR3: 00000001d9106000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400