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[84.0.24.210]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4399c60f764sm42846932f8f.3.2026.03.04.01.09.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 01:09:21 -0800 (PST) From: Timur =?UTF-8?B?S3Jpc3TDs2Y=?= To: Rosen Penev , Christian =?UTF-8?B?S8O2bmln?= Cc: Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , Xinhui Pan , David Airlie , Simona Vetter , Kenneth Feng , Alex Hung , Greg Kroah-Hartman , Lijo Lazar , "chr[]" , Sasha Levin , Wentao Liang , "open list:AMD DISPLAY CORE" , "open list:DRM DRIVERS" , open list , Greg KH Subject: Re: [PATCHv2 for 6.112 and 6.6 0/2] amdgpu: fix panic on old GPUs Date: Wed, 04 Mar 2026 10:09:19 +0100 Message-ID: <2596902.XAFRqVoOGU@timur-hyperion> In-Reply-To: <7d3a4090-06bf-40b0-8c80-ca08625608d7@amd.com> References: <20260228045356.3561-1-rosenp@gmail.com> <7d3a4090-06bf-40b0-8c80-ca08625608d7@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" On Wednesday, March 4, 2026 9:10:02=E2=80=AFAM Central European Standard Ti= me=20 Christian K=C3=B6nig wrote: > -stable +Greg >=20 > On 3/4/26 05:03, Rosen Penev wrote: > > On Fri, Feb 27, 2026 at 8:54=E2=80=AFPM Rosen Penev = wrote: > >> Because of incomplete backports to stable kernels, DC ended up breaking > >> on older GCN 1 GPUs. This patchset adds the missing upstream commits to > >> at least fix the panic/black screen on boot. > >>=20 > >> They are applicable to 6.12, 6.6, and 6.1 as those are the currently > >> supported kernels that 7009e3af0474aca5f64262b3c72fb6e23b232f9b got > >> backported to. > >>=20 > >> 6.1 needs two extra backports for these two commits to be cherry-picked > >> cleanly. Those are > >>=20 > >> 96ce96f8773da4814622fd97e5226915a2c30706 > >> d09ef243035b75a6d403ebfeb7e87fa20d7e25c6 > >>=20 > >> v2: Add Signed-off-by. > >=20 > > Do I need to resend? >=20 > Well first of all please stop sending those patches at all. >=20 > When you want something backported then add the CC: stable tag to the > original patch. >=20 > If you find that some patch is already upstream which isn't correctly tag= ged > then ping the relevant maintainers if that patch can be backported. >=20 > But don't send stuff to the stable list all by yourself. >=20 > Regards, > Christian. Hi Everyone, The patches actually come from a branch of mine: https://gitlab.freedesktop.org/Venemo/linux/-/commits/v6.12.74_si_dc_fixes =46or context: The crash comes from a patch that I wrote for 6.18 that fixes some issues o= n=20 the default, non-DC code path, that was backported to stable kernels. DC wa= s=20 not the default code path before Linux 6.19, so I didn't mark the patches t= hat=20 also fix DC for backporting, because I had assumed nobody uses the DC code = path=20 on these kernel versions. After a user reported to me that this causes issues for him with DC on 6.17= =20 and older kernels, I sent a backported series to Greg and Sasha, in an emai= l=20 thread with the subject line "Fixing an amdgpu crash caused by a backported= =20 patch". The fixes were backported to 6.17 then. I assumed that the stable maintainers would backport the fixes to all older= =20 kernels that were also affected, but Rosen brought it to my attention that = it=20 didn't happen. So I made the backports in the above branch. Rosen then deci= ded=20 to send them to the mailing list. Hope that helps clear up the situation. Thanks & best regards, Timur