From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEA122C3240; Fri, 15 Aug 2025 15:36:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755272179; cv=none; b=lOIhHM6WaZ9Fyiwv5G+kraIKFIrEe++UtAhcSrIvbQJ+Dkb+XQPs6BQxuGXT+qa71utDrnfo50wpxLwEBzUS1y9+kfKBbTTGipReyvirXJ9zy0gSNn5p96JLaQc4bE8/ruoc/I38IySi2Hyu/m1vG9c3IR3n8+TtyZ2HaE9GXhA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755272179; c=relaxed/simple; bh=LVvtEoWl6zkJ4vXxFj1wZD+JN3DAXY3Ez5tp4hw21jw=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=cR+i1NmtNJHPTwDVzQLQErh6zfAwszeFGsNY5ZAViJ5gHV1xxqzO4VfVChCBkrz0NVqlwMEkmQwjArjkrNOiJK2xymjpZHwjPXOnRhcbd5+Hm4dmil2KvqorWQZ2LmA9NGS6J9DJCBXt6YZxHTJWztvuuQmAXnm2L43lKTc0ZI0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=casper.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=dvNNOMCa; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=casper.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dvNNOMCa" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description; bh=LVvtEoWl6zkJ4vXxFj1wZD+JN3DAXY3Ez5tp4hw21jw=; b=dvNNOMCakAet0aULtF2eHCyYfF qNVLQncAzyuV257dyRHzIMYwHYWvAet2cSaMNGAoqHsQ1Qck//75/HFd+5JTF0ZxlHVtKG2wD0E6x JESccKEWLSGGKevGoXHbkB8QOW0e2MX5VpdxaajR8KZEowGrpRwTeJIyLoPtwbegvRM5NX8bmJtpF M+mRz0BaX4DhU9tWskk0s9rkrAly/9V65IQovhNy9xeWKo92pHxo94+G4qdAxNlpkF4nmBlh7Xn6W It8h72XxkkEISs6GGPtQpyJ8X2POsp5VIjMSWv31zddJ6LOFlAOU9Cpx44gvr3VM5tkn9bTRJCF4S gQwzLQJQ==; Received: from 54-240-197-234.amazon.com ([54.240.197.234] helo=u09cd745991455d.ant.amazon.com) by casper.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1umwTO-0000000ETzu-0QlL; Fri, 15 Aug 2025 15:36:07 +0000 Message-ID: Subject: Re: [syzbot ci] Re: Support "generic" CPUID timing leaf as KVM guest and host. From: David Woodhouse To: syzbot ci , ajay.kaher@broadcom.com, alexey.makhalov@broadcom.com, bp@alien8.de, dave.hansen@linux.intel.com, graf@amazon.de, hpa@zytor.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, seanjc@google.com, tglx@linutronix.de, vkuznets@redhat.com, x86@kernel.org Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Date: Fri, 15 Aug 2025 16:36:05 +0100 In-Reply-To: <689f5129.050a0220.e29e5.0019.GAE@google.com> References: <689f5129.050a0220.e29e5.0019.GAE@google.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.3-0ubuntu1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html On Fri, 2025-08-15 at 08:24 -0700, syzbot ci wrote: > syzbot ci has tested the following series >=20 > [v1] Support "generic" CPUID timing leaf as KVM guest and host. > https://lore.kernel.org/all/20250814120237.2469583-1-dwmw2@infradead.org > * [PATCH 1/3] KVM: x86: Restore caching of KVM CPUID base > * [PATCH 2/3] KVM: x86: Provide TSC frequency in "generic" timing infomat= ion CPUID leaf > * [PATCH 3/3] x86/kvm: Obtain TSC frequency from CPUID if present >=20 > and found the following issue: > kernel build error >=20 > Full report is available here: > https://ci.syzbot.org/series/a9510b1a-8024-41ce-9775-675f5c165e20 >=20 > *** >=20 > kernel build error >=20 > tree:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 torvalds > URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 https://kernel.googlesource.com/= pub/scm/linux/kernel/git/torvalds/linux > base:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 dfc0f6373094dd88e1eaf76c44f2ff01b65db= 851 > arch:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 amd64 > compiler:=C2=A0 Debian clang version 20.1.7 (++20250616065708+6146a88f604= 9-1~exp1~20250616065826.132), Debian LLD 20.1.7 > config:=C2=A0=C2=A0=C2=A0 https://ci.syzbot.org/builds/590edf8b-b2a0-4cbd= -a80e-35083fe0988e/config >=20 > arch/x86/kernel/kvm.c:899:30: error: a function declaration without a pro= totype is deprecated in all versions of C [-Werror,-Wstrict-prototypes] >=20 > *** #syz test: git://git.infradead.org/users/dwmw2/linux.git f280e5436b3297ebb3ac282faf555= 9139b097969