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AJvYcCWZ4uXwczVIGtVQn3gzy2kaIGF1aG+cdVVlqDbXfw6LjHZ3+ioUMKto47veUIkceTIb4l7FlnPecw==@kvack.org X-Gm-Message-State: AOJu0Yxmzdgi9J9Hv1odB39cB70CwxnZraR2VtsvfQqSpmPfeHCAYjcO 9oO1ahUZXZFpbF6HNf9CRXDIGFXIiOI0zKW91LCUKtlfQC0X1Vq8sCtvb464+OejJEbSnQDjHdP x/hLdyAioVENpVyBWNoBrIQd8O4U= X-Google-Smtp-Source: AGHT+IFvRf0Pxcb3wJuPeJTsK8vYkAQv91LEsZobHX9BvFAeqsRLRIv43cHdKoLCTjXDYXArXPEueCLHvEMn7+L8RS8= X-Received: by 2002:a05:6214:53c9:b0:6c5:5384:96b3 with SMTP id 6a1803df08f44-6cb81cc379fmr56780016d6.52.1727901933943; Wed, 02 Oct 2024 13:45:33 -0700 (PDT) MIME-Version: 1.0 References: <302fd5b8-e4a4-4748-9a91-413575a54a9a@lucifer.local> In-Reply-To: <302fd5b8-e4a4-4748-9a91-413575a54a9a@lucifer.local> From: Mikhail Gavrilov Date: Thu, 3 Oct 2024 01:45:23 +0500 Message-ID: Subject: Re: 6.12/BUG: KASAN: slab-use-after-free in m_next at fs/proc/task_mmu.c:187 To: Lorenzo Stoakes Cc: Linux List Kernel Mailing , Linux regressions mailing list , linux-fsdevel@vger.kernel.org, Liam.Howlett@oracle.com, Andrew Morton , Linux Memory Management List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Queue-Id: 287AB100003 X-Rspamd-Server: rspam01 X-Stat-Signature: mjt9q7wh5b194hs8k5qxsar3hinomcz4 X-HE-Tag: 1727901934-76073 X-HE-Meta: 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 HjBtNSOB 8PojH4BZ2cj8y9S0S3A5vkf9TiDYPFmywLFildcmsommRKDbi0FiicvrJnCZO6mXWMBeJsZNpyCoS/jrtt2AJE8KuBkQ7fJIdN3vIJorFV7oew0B4+vKKADezak2n4zS4SV2C+QKguYJHGd0jQ09rGfkcaspcxP22ie+WkhbnILayh6voaCRCs+eMozGDZTu7QRxjeO8HpdwqgPMUBUfj8HY0KPWbgXYYDeHasnCHcRh817FC8fsdagGzpg7ZI6g5IiWF6vDxl9esxC1KD4E7QVpjR6OiroQtioZuXQbKx3tfNJPfEEV4/htt1L4n9WTleBDqMRCpSCh6NmrPglP36BsCLs0nZqDdz9/J0Bf8UhTjRm0kSZCSsAeX37NjWRaadyCJ2Pl0YO1vhSlZjEm7JNxuyIsGRARYhA8+ X-Bogosity: Ham, tests=bogofilter, spamicity=0.000173, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Oct 2, 2024 at 10:56=E2=80=AFPM Lorenzo Stoakes wrote: > We can reliably repro it with CONFIG_DEBUG_VM_MAPLE_TREE, CONFIG_DEBUG_VM= , and > CONFIG_DEBUG_MAPLE_TREE set, if you set these you should see a report mor= e > quickly (let us know if you do). mikhail@primary-ws ~/dmesg> cat .config | grep 'CONFIG_DEBUG_VM_MAPLE_TREE' # CONFIG_DEBUG_VM_MAPLE_TREE is not set mikhail@primary-ws ~/dmesg> cat .config | grep 'CONFIG_DEBUG_VM' CONFIG_DEBUG_VM_IRQSOFF=3Dy CONFIG_DEBUG_VM=3Dy # CONFIG_DEBUG_VM_MAPLE_TREE is not set # CONFIG_DEBUG_VM_RB is not set CONFIG_DEBUG_VM_PGFLAGS=3Dy CONFIG_DEBUG_VM_PGTABLE=3Dy mikhail@primary-ws ~/dmesg> cat .config | grep 'CONFIG_DEBUG_MAPLE_TREE' # CONFIG_DEBUG_MAPLE_TREE is not set Fedora's kernel build uses only CONFIG_DEBUG_VM and it's enough for reproducing this issue. Anyway I enabled all three options. I'll try to live for a day without steam launching. In a day I'll write whether it is reproducing without steam or not. On Thu, Oct 3, 2024 at 1:32=E2=80=AFAM Lorenzo Stoakes wrote: > Out of curiosity, what GPU are you using? :) The issue reproduces on all my machines. One has an AMD Radeon 6900 XT and a second AMD Radeon 7900 XTX. --=20 Best Regards, Mike Gavrilov.