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Tue, 03 Jun 2025 21:47:57 -0700 (PDT) MIME-Version: 1.0 From: Luka Date: Wed, 4 Jun 2025 12:47:45 +0800 X-Gm-Features: AX0GCFsWGVBKHqqQT3C3oTPflCcAW357GAjJhN8iq8LxArwF6lTVf5oxUJmtO0s Message-ID: Subject: [BUG] WARNING: locking bug in ___rmqueue_pcplist in Linux kernel v6.12 To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: A8970140002 X-Stat-Signature: mockpjtt4bygga9faxm6jreigyxgmhdc X-Rspam-User: X-HE-Tag: 1749012479-741214 X-HE-Meta: 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 LCnXtPiU klf5FxmYVtqk+nwaZDv+IEG/rnVQRlEcdO0SyB9Leirp9R2i36lF32eTd/w== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Dear Kernel Maintainers, I am writing to report a potential vulnerability identified in the upstream Linux Kernel version v6.12, corresponding to the following commit in the mainline repository: Git Commit: adc218676eef25575469234709c2d87185ca223a (tag: v6.12) This issue was discovered during the testing of the Android 16 AOSP kernel, which is based on Linux kernel version 6.12, specifically from the AOSP kernel branch: AOSP kernel branch: android16-6.12 Manifest path: kernel/common.git Source URL: https://android.googlesource.com/kernel/common/+/refs/heads/android16-6.12 Although this kernel branch is used in Android 16 development, its base is aligned with the upstream Linux v6.12 release. I observed this issue while conducting stability and fuzzing tests on the Android 16 platform and identified that the root cause lies in the upstream codebase. Bug Location: ___rmqueue_pcplist+0x3b0/0x236c mm/page_alloc.c:3276 Bug Report: https://hastebin.com/share/tobupusuya.bash Entire Log: https://hastebin.com/share/imecipavet.yaml Thank you very much for your time and attention. I sincerely apologize that I am currently unable to provide a reproducer for this issue. However, I am actively working on reproducing the problem, and I will make sure to share any findings or reproducing steps with you as soon as they are available. I greatly appreciate your efforts in maintaining the Linux kernel and your attention to this matter. Best regards, Luka