From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0120B29B783 for ; Sat, 15 Nov 2025 18:59:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763233162; cv=none; b=RVya++mYy5JWWQqbl9xcjaQxjl9uwDuuT8uZKr5ObaKkLWd/sfETK7yoYGyNlfZz/cj+4Q54xR3K8Cluz+QlQADbQ1mjNO4QHCGDj7T7tye5owpZPRYc4WYdD2FZmO1UeEFJvU+ws28FrJRk9WAXnxb90ayF4/mvRA8vxE/mlao= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763233162; c=relaxed/simple; bh=+2kYoRGpLw7If+rQuosRU2cnJ4zLJfAp8kL+kRt2EKw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=biOh0ucDN0GfzHiqDmbcNQgV2EsEs6M9Wo8mq9Ovdadid0NzDOnpdmgibDFIqHFGpzEDMQGgtMXxh3xFZTgAwMiGSbfh5VWH5mT39JWOINJ5DAF3AQGmC6NaUNWZMALnUaWlVF3weoDjkDDp7jyRY7lkRnr3JpHbbJG9s+eFDZw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f79.google.com with SMTP id ca18e2360f4ac-8870219dce3so408733739f.0 for ; Sat, 15 Nov 2025 10:59:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763233160; x=1763837960; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Hh84L/w/M4L5E9rl0NqJcCUd9TshzOxlJPaXwCeAvmw=; b=euLefAS3ibJjSzA+oRBw9Exnuok9L6CxvgANpp/kArF2hM2v925plPl/ezBeMZaDky 9XTvtyGBzOPJhrCk7+cqUyKOciu3QJ2iqs7BQbDlo8l8HL9oPCheHoaFNVp2J1PqHOSE ZzH/h8uvg/p7OI3KACkZ/QGXuGrTunWyutspImYXrvV1pCuwfywMxS+DgnwKB2dEvm3m LShSRyY49pqSBgIH1efVHguNnkyXN6hv5LmckoQc2BoIB0cJ0sgPWeFPAg8ZfIlsFnTH xLIZXGDtTAloZHy6bZ+AjNJmohUjSC4C8pm05Z4EG9TTTybCgSvm0qMlpASoCVQdhAnE jEjQ== X-Forwarded-Encrypted: i=1; AJvYcCWccCC34HATYpLR967Q1FPWhFX00H8eTQ8PA6KmZNuh0pyIc7fMOq8X9jZYcUo3kbpMWPVU9GHVTjopn6M=@vger.kernel.org X-Gm-Message-State: AOJu0YyMet74zG6WvGVm8MvYb11DOESH1pPj7lTnbUp1jqJ7eO2fa8zQ gBDYWGym52BydWUaFhr9JUrNfbWZuoX/XVVx5lTEAUk30q1seBhYuHbdoWRhgdw/rxBSdEIfbjS zaiewOAAwrFku+lDXnpOSYTUKpg03441uBt+ZlXQjehkp7ruKFxL8tSaOMW8= X-Google-Smtp-Source: AGHT+IGAjUvEoAFE5aGheWc9M4XVW88LXL6etrr+P8QM9EJ8eCbbKXLDOA9ojzUpcKBx8dfM+EIEwdm7N+3dwWg4mQ1Ob7M0Ai2M Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:188f:b0:432:f3b:a809 with SMTP id e9e14a558f8ab-4348c94e420mr103669645ab.26.1763233160174; Sat, 15 Nov 2025 10:59:20 -0800 (PST) Date: Sat, 15 Nov 2025 10:59:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6918cd88.050a0220.1c914e.0044.GAE@google.com> Subject: [syzbot] [kvmarm?] WARNING in kvm_set_vm_id_reg From: syzbot To: catalin.marinas@arm.com, joey.gouly@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, maz@kernel.org, oliver.upton@linux.dev, oupton@kernel.org, suzuki.poulose@arm.com, syzkaller-bugs@googlegroups.com, will@kernel.org, yuzenghui@huawei.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 7a0892d2836e Merge tag 'pci-v6.18-fixes-5' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12c56884580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bbf220ce32df0361 dashboard link: https://syzkaller.appspot.com/bug?extid=c4aef6558d0cd90fe378 compiler: aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=139c77cd980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11d6a914580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-7a0892d2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e83411b74df6/vmlinux-7a0892d2.xz kernel image: https://storage.googleapis.com/syzbot-assets/135caed64c95/Image-7a0892d2.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c4aef6558d0cd90fe378@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3583 at arch/arm64/kvm/sys_regs.c:2353 kvm_set_vm_id_reg+0x60/0xf4 arch/arm64/kvm/sys_regs.c:2348 Modules linked in: CPU: 1 UID: 0 PID: 3583 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: a1402009 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : kvm_set_vm_id_reg+0x60/0xf4 arch/arm64/kvm/sys_regs.c:2353 lr : kvm_finalize_sys_regs+0x88/0x244 arch/arm64/kvm/sys_regs.c:5616 sp : ffff800089543ab0 x29: ffff800089543ab0 x28: f6f00000121c12c0 x27: 0000000000000000 x26: 0000000000000000 x25: f1f00000085d8000 x24: 0000000000000000 x23: f1f00000085d8048 x22: 0000000000000000 x21: f9ff800083e0dbd0 x20: f9ff800083e0d000 x19: f1f00000085d8000 x18: 00000000ffffffff x17: 0000000000000000 x16: 0000000000000000 x15: ffff800089543a90 x14: ffff800089543d98 x13: ffff800089543d5a x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000078 x8 : ffff800089543da8 x7 : f0f0000004469ffc x6 : 0000000000000077 x5 : f6f00000121c12c0 x4 : 0000000000000001 x3 : f9ff800083e0dd18 x2 : 1101001020110222 x1 : 0000000000000000 x0 : f9ff800083e0d000 Call trace: kvm_set_vm_id_reg+0x60/0xf4 arch/arm64/kvm/sys_regs.c:2348 (P) kvm_finalize_sys_regs+0x88/0x244 arch/arm64/kvm/sys_regs.c:5616 kvm_arch_vcpu_run_pid_change+0x8c/0x36c arch/arm64/kvm/arm.c:857 kvm_vcpu_ioctl+0x7f8/0x878 virt/kvm/kvm_main.c:4464 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0xac/0x104 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup