Re: [BUG] WARNING in workingset_activation triggered by KVM page fault path on Linux 7.0.0-08391-g1d51b370a0f8

[Zw Tang]

Hi David,

Thanks for pointing this out.

You are right. The commit id I sent was incorrect. I mistakenly used the
git describe-style suffix g1d51b370a0f8, but the actual git commit is:

1d51b370a0f8f642f4fc84c795fbedac0fcdbbd2

The short commit id is:

1d51b370a0f8

Sorry for the confusion.

I am also re-checking whether the kernel image was built from a clean tree
and whether there were any local modifications when the crash was reproduced,
so that the reported source line numbers match the exact build.

Thanks.

Zw Tang <shicenci@xxxxxxxxx> 于2026年4月22日周三 10:06写道：
>
>
> ________________________________
> 发件人: Tang Zw <shicenci@xxxxxxxxx>
> 发送时间: 2026年4月22日 10:03
> 收件人: David Hildenbrand (Arm) <david@xxxxxxxxxx>; linux-mm@xxxxxxxxx <linux-mm@xxxxxxxxx>; akpm@xxxxxxxxxxxxxxxxxxxx <akpm@xxxxxxxxxxxxxxxxxxxx>; hannes@xxxxxxxxxxx <hannes@xxxxxxxxxxx>
> 抄送: kvm@xxxxxxxxxxxxxxx <kvm@xxxxxxxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx>; pbonzini@xxxxxxxxxx <pbonzini@xxxxxxxxxx>; seanjc@xxxxxxxxxx <seanjc@xxxxxxxxxx>
> 主题: 回复: [BUG] WARNING in workingset_activation triggered by KVM page fault path on Linux 7.0.0-08391-g1d51b370a0f8
>
> Hi David,
> Thanks for pointing this out.
> You are right. The commit id I sent was incorrect. I mistakenly used the
> git describe-style suffix g1d51b370a0f8, but the actual git commit is:
> 1d51b370a0f8f642f4fc84c795fbedac0fcdbbd2
> The short commit id is:
> 1d51b370a0f8
> Sorry for the confusion.
> I am also re-checking whether the kernel image was built from a clean tree
> and whether there were any local modifications when the crash was reproduced,
> so that the reported source line numbers match the exact build.
> Thanks.
>
> ________________________________
> 发件人: David Hildenbrand (Arm) <david@xxxxxxxxxx>
> 发送时间: 2026年4月21日 22:06
> 收件人: Zw Tang <shicenci@xxxxxxxxx>; linux-mm@xxxxxxxxx <linux-mm@xxxxxxxxx>; akpm@xxxxxxxxxxxxxxxxxxxx <akpm@xxxxxxxxxxxxxxxxxxxx>; hannes@xxxxxxxxxxx <hannes@xxxxxxxxxxx>
> 抄送: kvm@xxxxxxxxxxxxxxx <kvm@xxxxxxxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx>; pbonzini@xxxxxxxxxx <pbonzini@xxxxxxxxxx>; seanjc@xxxxxxxxxx <seanjc@xxxxxxxxxx>
> 主题: Re: [BUG] WARNING in workingset_activation triggered by KVM page fault path on Linux 7.0.0-08391-g1d51b370a0f8
>
> On 4/21/26 13:17, Zw Tang wrote:
> > Hi,
> >
> > I am reporting a WARNING in workingset_activation() triggered by a
> > syzkaller C reproducer on Linux 7.0.0-08391-g1d51b370a0f8.
>
> g1d51b370a0f8 is not a known git commit id.
>
> Do you have an upstream git commit where the line number
> include/linux/memcontrol.h:381 makes sense?
>
>
> --
> Cheers,
>
> David