WARNING in kvm_arch_vcpu_ioctl

Date	Name	Commit	Repro	Result
2025/09/18	upstream (ToT)	cbf658dd0941	C	[report] WARNING in kvm_arch_vcpu_ioctl_run

Date

Name

Commit

Repro

Result

2025/09/18

upstream (ToT)

cbf658dd0941

[report] WARNING in kvm_arch_vcpu_ioctl_run

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in kvm_arch_vcpu_ioctl_run (5) kvm-x86	-1	C	error		343	771d	859d	23/29	fixed on 2023/10/12 12:47
upstream	WARNING in kvm_arch_vcpu_ioctl_run (4) kvm-x86	-1	C	error		288	864d	947d	22/29	fixed on 2023/06/08 14:41
upstream	WARNING in kvm_arch_vcpu_ioctl_run (2) kvm-x86	-1	C			61018	2819d	2908d	4/29	fixed on 2018/03/13 09:44
upstream	WARNING in kvm_arch_vcpu_ioctl_run (6) kvm-x86	-1	C			117	12d	93d	27/29	upstream: reported C repro on 2025/07/17 14:50
upstream	WARNING in kvm_arch_vcpu_ioctl_run	-1	C			20284	2945d	3010d	3/29	fixed on 2017/09/26 01:38
linux-4.14	WARNING in kvm_arch_vcpu_ioctl_run	-1	C		inconclusive	71	1131d	2307d	0/1	upstream: reported C repro on 2019/06/25 23:07
upstream	WARNING in kvm_arch_vcpu_ioctl_run (3) kvm-x86	-1	C	done	error	16157	968d	2762d	22/29	fixed on 2023/02/24 13:50
linux-4.19	WARNING in kvm_arch_vcpu_ioctl_run	-1	C		error	116	1040d	2315d	0/1	upstream: reported C repro on 2019/06/17 10:07
linux-5.15	WARNING in kvm_arch_vcpu_ioctl_run origin:lts-only	-1	C		inconclusive	1162	6h46m	924d	0/3	upstream: reported C repro on 2023/04/09 03:02
android-6-12	WARNING in kvm_arch_vcpu_ioctl_run origin:upstream	-1	C			49	8d23h	94d	0/1	premoderation: reported C repro on 2025/07/17 01:43
linux-6.1	WARNING in kvm_arch_vcpu_ioctl_run origin:lts-only	-1	C		done	713	3h51m	940d	0/3	upstream: reported C repro on 2023/03/23 13:22

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. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5941 at arch/x86/kvm/x86.c:11233 kvm_arch_vcpu_ioctl_run+0xfdc/0x16a0 arch/x86/kvm/x86.c:11233 Modules linked in: CPU: 0 PID: 5941 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:kvm_arch_vcpu_ioctl_run+0xfdc/0x16a0 arch/x86/kvm/x86.c:11233 Code: bf 01 00 00 00 89 c6 e8 82 8c 74 00 45 85 f6 7e 46 e8 c8 88 74 00 49 bd 00 00 00 00 00 fc ff df e9 0a fe ff ff e8 b4 88 74 00 <0f> 0b e9 c7 fd ff ff e8 a8 88 74 00 0f 0b e9 f2 fd ff ff e8 9c 88 RSP: 0018:ffffc900032d7a40 EFLAGS: 00010293 RAX: ffffffff8111078c RBX: ffff888026310000 RCX: ffff88802d2dbc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900032d7d10 R08: dffffc0000000000 R09: 1ffffffff21b4ebc R10: dffffc0000000000 R11: fffffbfff21b4ebd R12: 1ffff11004c62124 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88801b77d000 FS: 000055556f133500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000005200000c CR3: 000000001fb4d000 CR4: 00000000003526f0 Call Trace: <TASK> kvm_vcpu_ioctl+0x88b/0xb80 virt/kvm/kvm_main.c:4162 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f97d058eba9 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:00007fff535a8978 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f97d07d5fa0 RCX: 00007f97d058eba9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00007f97d0611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f97d07d5fa0 R14: 00007f97d07d5fa0 R15: 0000000000000003 </TASK>

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/09/13 05:43	linux-6.6.y	60a9e718726f	e2beed91	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan	WARNING in kvm_arch_vcpu_ioctl_run
2025/09/13 04:51	linux-6.6.y	60a9e718726f	e2beed91	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan	WARNING in kvm_arch_vcpu_ioctl_run

Crashes (2):

Assets (help?)