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[82.192.244.13]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ad1894c032fsm492456566b.123.2025.05.05.07.00.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 May 2025 07:00:31 -0700 (PDT) Sender: Salvatore Bonaccorso Received: by eldamar.lan (Postfix, from userid 1000) id 26597BE2DE0; Mon, 05 May 2025 16:00:31 +0200 (CEST) Date: Mon, 5 May 2025 16:00:31 +0200 From: Salvatore Bonaccorso To: Moritz =?iso-8859-1?Q?M=FChlenhoff?= Cc: Yu Kuai , Melvin Vermeeren , Greg Kroah-Hartman , 1104460@bugs.debian.org, Coly Li , Sasha Levin , stable , regressions@lists.linux.dev Subject: Re: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Message-ID: References: <174602441004.174814.6400502946223473449.reportbug@talos.vermwa.re> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Hi Moritz, On Mon, May 05, 2025 at 01:47:15PM +0200, Moritz Mühlenhoff wrote: > Am Wed, Apr 30, 2025 at 05:55:20PM +0200 schrieb Salvatore Bonaccorso: > > Hi > > > > We got a regression report in Debian after the update from 6.1.133 to > > 6.1.135. Melvin is reporting that discard/trimm trhough a RAID10 array > > stalls idefintively. The full report is inlined below and originates > > from https://bugs.debian.org/1104460 . > > JFTR, we ran into the same problem with a few Wikimedia servers running > 6.1.135 and RAID 10: The servers started to lock up once fstrim.service > got started. Full oops messages are available at > https://phabricator.wikimedia.org/P75746 Thanks for this aditional datapoints. Assuming you wont be able to thest the other stable series where the commit d05af90d6218 ("md/raid10: fix missing discard IO accounting") went in, might you at least be able to test the 6.1.y branch with the commit reverted again and manually trigger the issue? If needed I can provide a test Debian package of 6.1.135 (or 6.1.137) with the patch reverted. Regards, Salvatore