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Tue, 21 Apr 2026 19:07:09 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Zw Tang Date: Wed, 22 Apr 2026 10:06:58 +0800 X-Gm-Features: AQROBzCiAonjo35s67_JoyIpUPtqTCm3_6UwO3hAdG0USmTimwNrRapE995lvK0 Message-ID: Subject: Re: [BUG] WARNING in workingset_activation triggered by KVM page fault path on Linux 7.0.0-08391-g1d51b370a0f8 To: "David Hildenbrand (Arm)" , "linux-mm@kvack.org" , "akpm@linux-foundation.org" , "hannes@cmpxchg.org" Cc: "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "pbonzini@redhat.com" , "seanjc@google.com" Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: B2919140005 X-Stat-Signature: 8ihqh4wrxwabu7paj6ejdj9zxrap4p77 X-Rspam-User: X-HE-Tag: 1776823630-957625 X-HE-Meta: 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 vddE8zGo 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 reproduce= d, so that the reported source line numbers match the exact build. Thanks. Zw Tang =E4=BA=8E2026=E5=B9=B44=E6=9C=8822=E6=97=A5=E5= =91=A8=E4=B8=89 10:06=E5=86=99=E9=81=93=EF=BC=9A > > > ________________________________ > =E5=8F=91=E4=BB=B6=E4=BA=BA: Tang Zw > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2026=E5=B9=B44=E6=9C=8822=E6=97=A5 = 10:03 > =E6=94=B6=E4=BB=B6=E4=BA=BA: David Hildenbrand (Arm) ; = linux-mm@kvack.org ; akpm@linux-foundation.org ; hannes@cmpxchg.org > =E6=8A=84=E9=80=81: kvm@vger.kernel.org ; linux-kern= el@vger.kernel.org ; pbonzini@redhat.com ; seanjc@google.com > =E4=B8=BB=E9=A2=98: =E5=9B=9E=E5=A4=8D: [BUG] WARNING in workingset_activ= ation 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 tre= e > and whether there were any local modifications when the crash was reprodu= ced, > so that the reported source line numbers match the exact build. > Thanks. > > ________________________________ > =E5=8F=91=E4=BB=B6=E4=BA=BA: David Hildenbrand (Arm) > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2026=E5=B9=B44=E6=9C=8821=E6=97=A5 = 22:06 > =E6=94=B6=E4=BB=B6=E4=BA=BA: Zw Tang ; linux-mm@kvack= .org ; akpm@linux-foundation.org ; hannes@cmpxchg.org > =E6=8A=84=E9=80=81: kvm@vger.kernel.org ; linux-kern= el@vger.kernel.org ; pbonzini@redhat.com ; seanjc@google.com > =E4=B8=BB=E9=A2=98: 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