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Sat, 28 Feb 2026 17:10:15 +0800 (AWST) Message-ID: Date: Sat, 28 Feb 2026 17:10:15 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [BISECTED]: Black screen on 7.0-rc1 To: Thorsten Leemhuis , Linus Torvalds , Harald Arnesen , Takashi Sakamoto Cc: Danilo Krummrich , Linux Kernel Mailing List , Linux kernel regressions list References: <18b0ead7-0a5d-4699-a09d-de5bc2208b68@skogtun.org> <245628b6-6cdb-446c-824d-442100c89da8@skogtun.org> <67f655bb-4d81-4609-b008-68d200255dd2@davidgow.net> Content-Language: fr From: David Gow In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 28/02/2026 à 3:22 PM, Thorsten Leemhuis a écrit : > On 2/26/26 05:08, David Gow wrote: >> Le 25/02/2026 à 12:57 AM, Linus Torvalds a écrit : >>> On Mon, 23 Feb 2026 at 23:59, Harald Arnesen wrote: >>>> >>>>>>> In fact, I would expect it to be related to one (or both) of >>>>>>>       f2ae92780ab9 ("firewire: ohci: split page allocation from >>>>>>> 993ab48006b3 ("firewire: ohci: stop using page private to store >>>>>> dma mapping") >>>>>> Should I try reverting one or both of these? >>>>> Yes. From a quick check, they revert cleanly (revert 993ab48006b3 >>>>> first) and the result seems to compile cleanly too. >>>> I can confirm that the kernel boots with these two reverted. >>>> I have attached the new dmesg output. >>> Thanks. I guess it's up to Takashi to figure out what exactly goes >>> wrong, but it's good to have this confirmed. I hope you'll be willing >>> to test any patches that Takashi comes up with. >>> And if we can't figure it out, I guess reverting them is the right >>> thing, but let's wait until at least rc2 is imminent before we do >>> that. >> I am also seeing this, and can confirm that reverting the whole firewire >> pull fixes it here. > > TWIMC, John ran into a problem with mentioned f2ae92780ab9 commit that > from a brief look looks similar to the one Harald reported. And Takashi > posted a fix for it here: > https://lore.kernel.org/lkml/20260228031255.GA832746@workstation.local/ > > Not sure why Takashi did not reply here. Feels a bit like I'm missing > something. > Thanks, that patch indeed fixes it for me, too. -- David