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Sat, 22 Mar 2025 05:17:01 -0700 (PDT) Message-ID: <5e7ad224-651c-41aa-8d9b-b9ac43241793@gmail.com> Date: Sat, 22 Mar 2025 20:16:53 +0800 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: ryncsn@gmail.com Cc: axboe@kernel.dk, brauner@kernel.org, clm@meta.com, ct@flyingcircus.io, david@fromorbit.com, dhowells@redhat.com, dqminh@cloudflare.com, gregkh@linuxfoundation.org, kasong@tencent.com, sam@gentoo.org, stable@vger.kernel.org, torvalds@linux-foundation.org, willy@infradead.org References: <20241001210625.95825-1-ryncsn@gmail.com> Subject: Re: [PATCH 6.1.y 6.6.y 0/3] mm/filemap: fix page cache corruption with large folios Content-Language: en-US From: Yafang Shao In-Reply-To: <20241001210625.95825-1-ryncsn@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hello, After applying this patch series to our 6.1 kernel and enabling XFS large folios, we encountered random core dumps in one of our Hadoop services. These core dumps occurred sporadically over several weeks, and it took us a long time to identify XFS large folios as the root cause. Reverting commit 6795801366da0cd3d99e27c37f020a8f16714886 ("xfs: Support large folios") eliminated the issue. However, we have yet to determine the exact cause, as there are no warnings or errors in the kernel logs when the core dump occurs. Additionally, we have not found a reliable way to reproduce it consistently. While we have managed to trigger the issue within a few days on our test servers, this has not provided significant insights. At this point, XFS large folios appear to be unreliable in the 6.1.y stable kernel. We would appreciate any suggestions, such as adding debug messages to the kernel source code, to help us diagnose the root cause. Regards Yafang