linux-kernel - Re: [syzbot ci] Re: Support "generic" CPUID timing leaf as KVM guest and host.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CANp29Y7BFtp9YrgzMTJhF1rmF_xx_48zMuCwbkP978LHPazD1g@mail.gmail.com>
Date: Fri, 15 Aug 2025 17:43:03 +0200
From: Aleksandr Nogikh <nogikh@...gle.com>
To: David Woodhouse <dwmw2@...radead.org>
Cc: syzbot ci <syzbot+ci156aec4dff349a40@...kaller.appspotmail.com>, 
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org, 
	syzbot@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot ci] Re: Support "generic" CPUID timing leaf as KVM guest
 and host.

On Fri, Aug 15, 2025 at 5:36 PM David Woodhouse <dwmw2@...radead.org> wrote:
>
> On Fri, 2025-08-15 at 08:24 -0700, syzbot ci wrote:
> > syzbot ci has tested the following series
> >
> > [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 infomation CPUID leaf
> > * [PATCH 3/3] x86/kvm: Obtain TSC frequency from CPUID if present
> >
> > and found the following issue:
> > kernel build error
> >
> > Full report is available here:
> > https://ci.syzbot.org/series/a9510b1a-8024-41ce-9775-675f5c165e20
> >
> > ***
> >
> > kernel build error
> >
> > tree:      torvalds
> > URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
> > base:      dfc0f6373094dd88e1eaf76c44f2ff01b65db851
> > arch:      amd64
> > compiler:  Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
> > config:    https://ci.syzbot.org/builds/590edf8b-b2a0-4cbd-a80e-35083fe0988e/config
> >
> > arch/x86/kernel/kvm.c:899:30: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
> >
> > ***
>
> #syz test:
> git://git.infradead.org/users/dwmw2/linux.git f280e5436b3297ebb3ac282faf5559139b097969
>

Hi David,

(FYI) The syz test command is not supported for "syzbot ci" reports
yet (but it's in the plans).

-- 
Aleksandr