kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
kvm: pic: non byte write
------------[ cut here ]------------
WARNING: arch/x86/kvm/x86.c:11599 at vcpu_block arch/x86/kvm/x86.c:11599 [inline], CPU#0: syz.0.17/6014
WARNING: arch/x86/kvm/x86.c:11599 at vcpu_run+0x748a/0x76b0 arch/x86/kvm/x86.c:11641, CPU#0: syz.0.17/6014
Modules linked in:
CPU: 0 UID: 0 PID: 6014 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:vcpu_block arch/x86/kvm/x86.c:11599 [inline]
RIP: 0010:vcpu_run+0x748a/0x76b0 arch/x86/kvm/x86.c:11641
Code: 48 83 c3 20 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 16 02 00 00 44 88 33 eb 10 e8 8e a8 7a 00 eb 09 e8 87 a8 7a 00 90 <0f> 0b 90 45 31 e4 48 c7 84 24 00 03 00 00 0e 36 e0 45 48 8b 84 24
RSP: 0018:ffffc900034d7560 EFLAGS: 00010293
RAX: ffffffff81474ec9 RBX: 00000000fffffff0 RCX: ffff8880269f0000
RDX: 0000000000000000 RSI: 00000000fffffff0 RDI: 00000000fffffff0
RBP: ffffc900034d7990 R08: ffff888011497ae7 R09: 1ffff11002292f5c
R10: dffffc0000000000 R11: ffffed1002292f5d R12: 1ffff110062bb066
R13: ffff8880315d8000 R14: ffff8880315d8038 R15: dffffc0000000000
FS:  000055558949a500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007318e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kvm_arch_vcpu_ioctl_run+0x1148/0x1c90 arch/x86/kvm/x86.c:11984
 kvm_vcpu_ioctl+0x99a/0xed0 virt/kvm/kvm_main.c:4492
 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/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdd7518f749
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:00007ffe66267068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdd753e5fa0 RCX: 00007fdd7518f749
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fdd75213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdd753e5fa0 R14: 00007fdd753e5fa0 R15: 0000000000000003
 </TASK>