syzbot

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.
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WARNING: CPU: 1 PID: 382 at arch/x86/kvm/x86.c:11594 kvm_arch_vcpu_ioctl_run+0x12af/0x1aa0 arch/x86/kvm/x86.c:11594
Modules linked in:
CPU: 1 UID: 0 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 5858c650b1a5817904c779681fc6b689ba617a84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x12af/0x1aa0 arch/x86/kvm/x86.c:11594
Code: 7e 3b e8 14 26 6a 00 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 4c 8b 64 24 40 48 8b 5c 24 28 e9 26 fd ff ff e8 f1 25 6a 00 <0f> 0b e9 e4 fc ff ff e8 e5 25 6a 00 0f 0b e9 0e fd ff ff e8 d9 25
RSP: 0018:ffffc9000123f9c0 EFLAGS: 00010293
RAX: ffffffff811bd7ef RBX: ffff8881151f4300 RCX: ffff88810d72cc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000123fc70 R08: ffff88810d72cc07 R09: 1ffff11021ae5980
R10: dffffc0000000000 R11: ffffed1021ae5981 R12: ffff888114ff2000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881151f4378
FS:  000055558ec47500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000005200000c CR3: 0000000115468000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 kvm_vcpu_ioctl+0x96f/0xee0 virt/kvm/kvm_main.c:4515
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x132/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7ff92f58eec9
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:00007ffc6b0ff6a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff92f7e5fa0 RCX: 00007ff92f58eec9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007ff92f611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff92f7e5fa0 R14: 00007ff92f7e5fa0 R15: 0000000000000003
 </TASK>
---[ end trace 0000000000000000 ]---