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[80.218.24.251]) by smtp.gmail.com with ESMTPSA id f22sm4827173edu.26.2021.10.30.00.30.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 Oct 2021 00:30:54 -0700 (PDT) Sender: Salvatore Bonaccorso Date: Sat, 30 Oct 2021 09:30:54 +0200 From: Salvatore Bonaccorso To: Pavel Begunkov Cc: Daniel Black , linux-block@vger.kernel.org, io-uring@vger.kernel.org Subject: Re: uring regression - lost write request Message-ID: References: <77f9feaa-2d65-c0f5-8e55-5f8210d6a4c6@gmail.com> <8cd3d258-91b8-c9b2-106c-01b577cc44d4@gmail.com> <23555381-2bea-f63a-1715-a80edd3ee27f@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <23555381-2bea-f63a-1715-a80edd3ee27f@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hi Daniel, On Mon, Oct 25, 2021 at 12:25:01PM +0100, Pavel Begunkov wrote: > On 10/25/21 12:09, Daniel Black wrote: > > On Mon, Oct 25, 2021 at 8:59 PM Pavel Begunkov wrote: > > > > > > On 10/22/21 10:10, Pavel Begunkov wrote: > > > > On 10/22/21 04:12, Daniel Black wrote: > > > > > Sometime after 5.11 and is fixed in 5.15-rcX (rc6 extensively tested > > > > > over last few days) is a kernel regression we are tracing in > > > > > https://jira.mariadb.org/browse/MDEV-26674 and > > > > > https://jira.mariadb.org/browse/MDEV-26555 > > > > > 5.10 and early across many distros and hardware appear not to have a problem. > > > > > > > > > > I'd appreciate some help identifying a 5.14 linux stable patch > > > > > suitable as I observe the fault in mainline 5.14.14 (built > > > > > > > > Cc: io-uring@vger.kernel.org > > > > > > > > Let me try to remember anything relevant from 5.15, > > > > Thanks for letting know > > > > > > Daniel, following the links I found this: > > > > > > "From: Daniel Black > > > ... > > > The good news is I've validated that the linux mainline 5.14.14 build > > > from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.14/ has > > > actually fixed this problem." > > > > > > To be clear, is the mainline 5.14 kernel affected with the issue? > > > Or does the problem exists only in debian/etc. kernel trees? > > > > Thanks Pavel for looking. > > > > I'm retesting https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.14/ > > in earnest. I did get some assertions, but they may have been > > unrelated. The testing continues... > > Thanks for the work on pinpointing it. I'll wait for your conclusion > then, it'll give us an idea what we should look for. Were you able to pinpoint the issue? Regards, Salvatore