linux-kernel - [syzbot] [kvm?] WARNING in vcpu

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Message-ID: <671bc7a7.050a0220.455e8.022a.GAE@google.com>
Date: Fri, 25 Oct 2024 09:30:31 -0700
From: syzbot <syzbot+1522459a74d26b0ac33a@...kaller.appspotmail.com>
To: bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, 
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org, mingo@...hat.com, 
	pbonzini@...hat.com, seanjc@...gle.com, syzkaller-bugs@...glegroups.com, 
	tglx@...utronix.de, x86@...nel.org
Subject: [syzbot] [kvm?] WARNING in vcpu_run

Hello,

syzbot found the following issue on:

HEAD commit:    ae90f6a6170d Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=168d0230580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=309bb816d40abc28
dashboard link: https://syzkaller.appspot.com/bug?extid=1522459a74d26b0ac33a
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=158d0230580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f8de40580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1fd044836856/disk-ae90f6a6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a01e01be8aa8/vmlinux-ae90f6a6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b0e73e0cce7/bzImage-ae90f6a6.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1522459a74d26b0ac33a@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 5838 at arch/x86/kvm/x86.c:11215 vcpu_block arch/x86/kvm/x86.c:11215 [inline]
WARNING: CPU: 1 PID: 5838 at arch/x86/kvm/x86.c:11215 vcpu_run+0x872d/0x8900 arch/x86/kvm/x86.c:11259
Modules linked in:
CPU: 1 UID: 0 PID: 5838 Comm: syz-executor929 Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:vcpu_block arch/x86/kvm/x86.c:11215 [inline]
RIP: 0010:vcpu_run+0x872d/0x8900 arch/x86/kvm/x86.c:11259
Code: 48 3b 84 24 e0 04 00 00 0f 85 e5 01 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 f4 12 81 00 90 <0f> 0b 90 e9 72 ff ff ff e8 e6 12 81 00 e9 68 ff ff ff e8 dc 12 81
RSP: 0018:ffffc90003c6f480 EFLAGS: 00010293
RAX: ffffffff8113c4cc RBX: 00000000fffffff0 RCX: ffff88802eae8000
RDX: 0000000000000000 RSI: 00000000fffffff0 RDI: 00000000fffffff0
RBP: ffffc90003c6f9b0 R08: ffffffff8113498c R09: 1ffff110069638dc
R10: dffffc0000000000 R11: ffffed10069638dd R12: 1ffff1100691305d
R13: ffff888034898000 R14: ffffffff8e72ae90 R15: ffff888034898038
FS:  00007f148304f6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000781b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_arch_vcpu_ioctl_run+0xa73/0x19d0 arch/x86/kvm/x86.c:11575
 kvm_vcpu_ioctl+0x91a/0xea0 virt/kvm/kvm_main.c:4475
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f14830f9049
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f148304f228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1483183358 RCX: 00007f14830f9049
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f1483183350 R08: 00007ffe514601c7 R09: 00007f148304f6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f148318335c
R13: 00007f1483150038 R14: 6d766b2f7665642f R15: 00007ffe514601c8
 </TASK>


---
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