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Subject: Re: kernel panic when resuming from hibernate in next-20260406 with PREEMPT_RT From: Bert Karwatzki To: "Ostrowski, Rafal" Cc: "Varone, Dillon" , spasswolf@web.de, "Hung, Alex" , "Deucher, Alexander" , Sebastian Andrzej Siewior , Thomas Gleixner , "linux-kernel@vger.kernel.org" , "linux-next@vger.kernel.org" , "linux-rt-devel@lists.linux.dev" , "amd-gfx@lists.freedesktop.org" Date: Sun, 26 Apr 2026 10:28:57 +0200 In-Reply-To: References: <20260409131411.10598-1-spasswolf@web.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.56.2-0+deb13u1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:kQcTY/3PUzonPXpbQyWw2UThw3wqIb8voXSQJLLomU3am6FJDtR jZEP7YjWtr84o9Yl8q0+X5GrTyAG3qmGq3XCH8ntrf/Qermk+r/+kQwmlbZGZFG0LpAlsqq DzTZ25+xm1GEcinLjcrK0xqw5JmKojq2GYVPKBIIGO0j0rYGcTJfg7GeJ4+i9FqQ+btJE8m NFSIttFCnUI4EoF1sh+9g== UI-OutboundReport: notjunk:1;M01:P0:BQjYTB6cc+s=;Jk4SPeur+K1R2pZmrzCYIHw0jgO 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List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Am Freitag, dem 10.04.2026 um 13:20 +0000 schrieb Ostrowski, Rafal: > Hi Bert, >=20 > I identified root cause of problem. I had to do modifications to mention= ed patches to work well with PREEMPT_RT enabled. I tested it on my local m= achine and it seems to fix the problem. Now it has to go through internal = processes. I will let you know if I know when fix will be available to you= . >=20 > Kind Regards, > Rafal Ostrowski So it seems that commit 8bf0cb97edb6 ("drm/amd/display: Move dml2_destroy to non-FPU compilation u= nit") is the commit that fixes the issue, but is missing the appropriate tags: Reported-By: Bert Karwatzki Fixes: 3539437f354b ("drm/amd/display: Move FPU Guards From DML To DC - Pa= rt 3") Please fix this. Bert Karwatzki