kvm: pic: non byte write
------------[ cut here ]------------
WARNING: arch/x86/kvm/x86.c:11571 at vcpu_block arch/x86/kvm/x86.c:11571 [inline], CPU#1: syz.4.1045/8704
WARNING: arch/x86/kvm/x86.c:11571 at vcpu_run+0x6d51/0x6f80 arch/x86/kvm/x86.c:11613, CPU#1: syz.4.1045/8704
Modules linked in:
CPU: 1 UID: 0 PID: 8704 Comm: syz.4.1045 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:11571 [inline]
RIP: 0010:vcpu_run+0x6d51/0x6f80 arch/x86/kvm/x86.c:11613
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 77 4f 7a 00 eb 09 e8 70 4f 7a 00 90 <0f> 0b 90 45 31 ed 48 c7 84 24 c0 02 00 00 0e 36 e0 45 48 8b 84 24
RSP: 0018:ffffc9000e4975c0 EFLAGS: 00010283
RAX: ffffffff8146cbf0 RBX: 00000000fffffff0 RCX: 0000000000080000
RDX: ffffc9001bb76000 RSI: 000000000000046f RDI: 0000000000000470
RBP: ffffc9000e497990 R08: ffff8880302e44e7 R09: 1ffff1100605c89c
R10: dffffc0000000000 R11: ffffed100605c89d R12: ffff88807f42aa18
R13: ffff88807f42a978 R14: ffff88807f42a940 R15: dffffc0000000000
FS:  00007f47c9a4e6c0(0000) GS:ffff8881261c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c377ed5 CR3: 000000001a14c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: fffffffffffffffc DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_arch_vcpu_ioctl_run+0x1148/0x1c90 arch/x86/kvm/x86.c:11956
 kvm_vcpu_ioctl+0x95c/0xe90 virt/kvm/kvm_main.c:4477
 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: 0033:0x7f47c8b8f749
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:00007f47c9a4e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f47c8de6090 RCX: 00007f47c8b8f749
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f47c8c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f47c8de6128 R14: 00007f47c8de6090 R15: 00007f47c8f0fa28
 </TASK>