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WARNING in kvm_arch_vcpu_ioctl_run

Status: upstream: reported C repro on 2023/03/23 13:22
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+b000b7d21f93fc69de32@syzkaller.appspotmail.com
First crash: 848d, last: 1d01h
Fix commit to backport (bisect log) :
tree: upstream
commit 8e6ed96cdd5001c55fccc80a17f651741c1ca7d2
Author: Li RongQing <lirongqing@baidu.com>
Date: Fri Jan 6 04:06:25 2023 +0000

  KVM: x86: fire timer when it is migrated and expired, and in oneshot mode

[report pending]
  
Fix bisection: the issue occurs on the latest tested release (bisect log)
Crash: WARNING in kvm_arch_vcpu_ioctl_run (log)
Repro: C syz .config
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
Re: [v5.15] WARNING in kvm_arch_vcpu_ioctl_run 3 (3) 2023/08/28 15:23
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/05/18 linux-6.1.y (ToT) fa74641fb6b9 C [report] WARNING in kvm_arch_vcpu_ioctl_run
2023/05/18 upstream (ToT) 4d6d4c7f541d C Didn't crash
▶ ▼ Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kvm_arch_vcpu_ioctl_run (5) kvm -1 C error 343 679d 766d 23/29 fixed on 2023/10/12 12:47
upstream WARNING in kvm_arch_vcpu_ioctl_run (4) kvm -1 C error 288 771d 855d 22/29 fixed on 2023/06/08 14:41
upstream WARNING in kvm_arch_vcpu_ioctl_run (2) kvm -1 C 61018 2727d 2816d 4/29 fixed on 2018/03/13 09:44
upstream WARNING in kvm_arch_vcpu_ioctl_run (6) kvm-x86 -1 C 6 44m 1d07h 0/29 upstream: reported C repro on 2025/07/17 14:50
upstream WARNING in kvm_arch_vcpu_ioctl_run -1 C 20284 2852d 2917d 3/29 fixed on 2017/09/26 01:38
linux-4.14 WARNING in kvm_arch_vcpu_ioctl_run -1 C inconclusive 71 1038d 2214d 0/1 upstream: reported C repro on 2019/06/25 23:07
upstream WARNING in kvm_arch_vcpu_ioctl_run (3) kvm -1 C done error 16157 876d 2669d 22/29 fixed on 2023/02/24 13:50
linux-4.19 WARNING in kvm_arch_vcpu_ioctl_run -1 C error 116 947d 2223d 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 937 2d05h 831d 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 1 1d20h 1d20h 0/1 premoderation: reported C repro on 2025/07/17 01:43
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/01/23 15:07 3h52m (2) fix candidate upstream OK (1) job log
2023/04/29 07:09 43m bisect fix linux-6.1.y OK (0) job log log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4444 at arch/x86/kvm/x86.c:11214 kvm_arch_vcpu_ioctl_run+0x1e9e/0x2390 arch/x86/kvm/x86.c:11214
Modules linked in:
CPU: 1 PID: 4444 Comm: syz.0.26 Not tainted 6.1.145-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1e9e/0x2390 arch/x86/kvm/x86.c:11214
Code: e8 d7 89 c2 00 e9 4e ef ff ff 44 89 f9 80 e1 07 38 c1 0f 8c db e5 ff ff 4c 89 ff e8 9c 89 c2 00 e9 ce e5 ff ff e8 12 0e 71 00 <0f> 0b e9 da fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ae eb
RSP: 0018:ffffc9000355fc48 EFLAGS: 00010293
RAX: ffffffff810fc97e RBX: ffff88802b918000 RCX: ffff888025209dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802b918000
RBP: ffff88807425a000 R08: dffffc0000000000 R09: fffffbfff215c468
R10: fffffbfff215c468 R11: 1ffffffff215c467 R12: ffff88802b9182ec
R13: ffff88802b9180d8 R14: dffffc0000000000 R15: 0000000000000000
FS:  000055556bd8a500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006635000 CR3: 000000007f6b6000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_vcpu_ioctl+0x887/0xb80 virt/kvm/kvm_main.c:4122
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6e9cf8e929
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:00007ffdaf28d598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6e9d1b5fa0 RCX: 00007f6e9cf8e929
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f6e9d010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6e9d1b5fa0 R14: 00007f6e9d1b5fa0 R15: 0000000000000003
 </TASK>

Crashes (515):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/15 16:44 linux-6.1.y f2198ea7eb3e 03fcfc4b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/04/03 00:03 linux-6.1.y 8e60a714ba3b c799dfdd .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2024/12/23 03:08 linux-6.1.y 29f02ec58a94 b4fbdbd4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2024/05/02 13:33 linux-6.1.y dcbc050cb0d3 3ba885bc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2024/01/21 20:27 linux-6.1.y 8fd7f4462453 9bd8dcda .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2023/03/23 16:10 linux-6.1.y e3a87a10f259 f94b4a29 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2023/08/18 01:00 linux-6.1.y 6c44e13dc284 74b106b6 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2023/07/30 14:08 linux-6.1.y d2a6dc4eaf6d 92476829 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2023/06/04 12:06 linux-6.1.y d2869ace6eeb a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/17 20:24 linux-6.1.y f2198ea7eb3e 0d1223f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/16 19:10 linux-6.1.y f2198ea7eb3e 124ec9cc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/16 06:54 linux-6.1.y f2198ea7eb3e 03fcfc4b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/15 14:05 linux-6.1.y f2198ea7eb3e 03fcfc4b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/15 13:27 linux-6.1.y f2198ea7eb3e 03fcfc4b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/11 20:46 linux-6.1.y dfc486ec9cce 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/05 01:05 linux-6.1.y 7e69c33e4858 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/07/04 23:53 linux-6.1.y 7e69c33e4858 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/29 22:08 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/29 08:53 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/28 19:32 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/27 03:53 linux-6.1.y 58485ff1a74f 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/26 11:19 linux-6.1.y 58485ff1a74f 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/26 04:57 linux-6.1.y 58485ff1a74f 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/23 17:16 linux-6.1.y 58485ff1a74f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/22 19:33 linux-6.1.y 58485ff1a74f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/22 08:35 linux-6.1.y 58485ff1a74f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/22 05:08 linux-6.1.y 58485ff1a74f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/21 16:09 linux-6.1.y 58485ff1a74f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/18 06:33 linux-6.1.y 58485ff1a74f e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/17 15:55 linux-6.1.y 58485ff1a74f cfebc887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/17 13:23 linux-6.1.y 58485ff1a74f cfebc887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/14 12:12 linux-6.1.y 58485ff1a74f 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/12 15:42 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/12 06:25 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/11 11:31 linux-6.1.y 58485ff1a74f 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/10 09:02 linux-6.1.y 58485ff1a74f 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/07 18:36 linux-6.1.y 58485ff1a74f 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/06 20:25 linux-6.1.y 58485ff1a74f 9fa58bba .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/05 13:31 linux-6.1.y 58485ff1a74f 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/05 10:40 linux-6.1.y 58485ff1a74f 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/03 18:17 linux-6.1.y da3c5173c55f a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/02 22:50 linux-6.1.y da3c5173c55f b396b4bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/01 12:21 linux-6.1.y da3c5173c55f 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/06/01 11:18 linux-6.1.y da3c5173c55f 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/31 05:48 linux-6.1.y da3c5173c55f 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/28 10:39 linux-6.1.y da3c5173c55f 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/28 10:05 linux-6.1.y da3c5173c55f 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/27 03:10 linux-6.1.y da3c5173c55f 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/26 10:21 linux-6.1.y da3c5173c55f 2d4582d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/26 05:44 linux-6.1.y da3c5173c55f 2d4582d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/25 10:04 linux-6.1.y da3c5173c55f ed351ea7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2025/05/24 11:51 linux-6.1.y da3c5173c55f ed351ea7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
2023/03/23 13:22 linux-6.1.y e3a87a10f259 f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in kvm_arch_vcpu_ioctl_run
* Struck through repros no longer work on HEAD.