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WARNING in kvm_arch_vcpu_ioctl_run

Status: upstream: reported C repro on 2019/06/25 23:07
Reported-by: syzbot+d8f921b63518234f6a20@syzkaller.appspotmail.com
First crash: 2005d, last: 829d
Fix bisection the fix commit could be any of (bisect log):
  050272a0423e Linux 4.14.177
  4139fb08c05f Linux 4.14.187
   
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kvm_arch_vcpu_ioctl_run (5) kvm C error 343 470d 557d 23/28 fixed on 2023/10/12 12:47
upstream WARNING in kvm_arch_vcpu_ioctl_run (4) kvm C error 288 562d 645d 22/28 fixed on 2023/06/08 14:41
upstream WARNING in kvm_arch_vcpu_ioctl_run (2) kvm C 61018 2518d 2606d 4/28 fixed on 2018/03/13 09:44
upstream WARNING in kvm_arch_vcpu_ioctl_run C 20284 2643d 2708d 3/28 fixed on 2017/09/26 01:38
upstream WARNING in kvm_arch_vcpu_ioctl_run (3) kvm C done error 16157 666d 2460d 22/28 fixed on 2023/02/24 13:50
linux-4.19 WARNING in kvm_arch_vcpu_ioctl_run C error 116 738d 2014d 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 C inconclusive 592 1d02h 622d 0/3 upstream: reported C repro on 2023/04/09 03:02
linux-6.1 WARNING in kvm_arch_vcpu_ioctl_run origin:lts-only C done 283 4d19h 639d 0/3 upstream: reported C repro on 2023/03/23 13:22
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2020/06/28 00:31 30m (3) bisect fix linux-4.14.y OK (2) job log
2020/05/29 00:07 23m bisect fix linux-4.14.y OK (0) job log log
2020/04/11 02:16 24m bisect fix linux-4.14.y OK (0) job log log
2020/03/12 01:48 24m bisect fix linux-4.14.y OK (0) job log log
2020/02/10 22:44 22m bisect fix linux-4.14.y OK (0) job log log
2020/01/11 22:20 22m bisect fix linux-4.14.y OK (0) job log log
2019/12/12 20:12 22m bisect fix linux-4.14.y OK (0) job log log

Sample crash report:
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: 7960 at arch/x86/kvm/x86.c:7542 kvm_arch_vcpu_ioctl_run+0x145/0x5c80 arch/x86/kvm/x86.c:7542
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7960 Comm: syz-executor289 Not tainted 4.14.292-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x145/0x5c80 arch/x86/kvm/x86.c:7542
RSP: 0018:ffff88809cbafaf0 EFLAGS: 00010297
RAX: ffff888098a46000 RBX: ffff8880ac3fd000 RCX: ffff88809361045c
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888093610268
RBP: ffff88809cbafc40 R08: ffff888093615720 R09: 0000000000000001
R10: ffff88809cbafc60 R11: ffff888098a46000 R12: 0000000000000000
R13: ffff888093610118 R14: 0000000000000000 R15: ffff888093610040
 kvm_vcpu_ioctl+0x417/0xca0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2698
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fe382e05549
RSP: 002b:00007ffd0a2775b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000002e RCX: 00007fe382e05549
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fe382dc9530 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe382dc95c0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (71):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/09/14 07:42 linux-4.14.y 65640c873dcf b884348d .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2022/03/04 15:42 linux-4.14.y e853993d29aa 45a13a73 .config console log report syz C ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/08/21 10:27 linux-4.14.y 162b95d01320 b599f2fc .config console log report syz C ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2020/04/28 23:12 linux-4.14.y 050272a0423e e3ecea2e .config console log report syz C ci2-linux-4-14
2019/06/25 22:06 linux-4.14.y bc2bccef19ee 0a8d1a96 .config console log report syz C ci2-linux-4-14
2022/07/16 00:18 linux-4.14.y 424a46ea058e 95cb00d1 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2022/07/06 18:50 linux-4.14.y ed2e96e11936 bff65f44 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/05/15 12:16 linux-4.14.y 7d7d1c0ab3eb 93f844de .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/25 20:18 linux-4.14.y cf256fbcbe34 2a82f1b3 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/24 07:17 linux-4.14.y cf256fbcbe34 17f0b706 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/23 07:45 linux-4.14.y cf256fbcbe34 590921a5 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/22 12:49 linux-4.14.y cf256fbcbe34 33c28d03 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/21 09:54 linux-4.14.y cf256fbcbe34 95777977 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/19 10:24 linux-4.14.y cf256fbcbe34 50f523d7 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/18 19:33 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/18 16:07 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/18 12:17 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/17 16:18 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/17 14:51 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/16 14:42 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/16 13:15 linux-4.14.y cf256fbcbe34 7e2b734b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/16 05:55 linux-4.14.y 958e517f4e16 c59079a6 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/15 18:37 linux-4.14.y 958e517f4e16 c59079a6 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/15 16:33 linux-4.14.y 958e517f4e16 c59079a6 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/13 22:50 linux-4.14.y 958e517f4e16 a184b83e .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/13 20:07 linux-4.14.y 958e517f4e16 a184b83e .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/13 04:35 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/12 10:14 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/12 08:06 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/10 15:53 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/10 15:27 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/10 15:26 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/10 14:13 linux-4.14.y 958e517f4e16 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/09 18:48 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/09 11:31 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/09 09:28 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/08 03:34 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/08 00:00 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/07 23:17 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/07 13:29 linux-4.14.y 0cc244011f40 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/07 02:54 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/06 00:38 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/05 20:14 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/05 18:36 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/05 09:27 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/05 01:02 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/04 18:17 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/02 20:40 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/02 19:35 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/04/01 15:44 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/31 02:45 linux-4.14.y bd634aa64163 6a81331a .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/28 07:55 linux-4.14.y 670d6552eda8 a8529b82 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/25 12:49 linux-4.14.y 670d6552eda8 6a383ecf .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/25 10:32 linux-4.14.y 670d6552eda8 6a383ecf .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/25 08:58 linux-4.14.y 670d6552eda8 6a383ecf .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/24 15:12 linux-4.14.y 670d6552eda8 607e3baf .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/24 14:46 linux-4.14.y 670d6552eda8 607e3baf .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/23 16:34 linux-4.14.y cb83ddcd5332 e613994b .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/22 19:07 linux-4.14.y cb83ddcd5332 8092f30d .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/22 06:57 linux-4.14.y cb83ddcd5332 bea32f74 .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/21 16:32 linux-4.14.y cb83ddcd5332 4c9a64da .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/21 12:07 linux-4.14.y cb83ddcd5332 17810eae .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/20 21:14 linux-4.14.y cb83ddcd5332 17810eae .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/20 21:13 linux-4.14.y cb83ddcd5332 17810eae .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2021/03/20 02:45 linux-4.14.y cb83ddcd5332 3d01c4de .config console log report info ci2-linux-4-14 WARNING in kvm_arch_vcpu_ioctl_run
2019/10/19 10:55 linux-4.14.y b98aebd29824 8c88c9c1 .config console log report ci2-linux-4-14
2019/07/30 07:19 linux-4.14.y ff33472c282e f67095ee .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.