From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outbound.st.icloud.com (st-2004b-snip4-11.eps.apple.com [57.103.78.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1F944429CED for ; Fri, 17 Jul 2026 16:44:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=57.103.78.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784306665; cv=none; b=UI7cAoO00s/jLsHTu5m98SiEQy6tSsG2zX1gwYYMLv0gSA5fLbYNz/H9wOAYNK0QvSWZdYF0DCLxSBmgODgbp2/PXfSOfkY9lknDQ7jBDK01XPR2GML1+XX9A0WiTDZ8708DtNdIXqVrTGQ+9hkx78Ews2pJxPdVa4ekgSHSiW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784306665; c=relaxed/simple; bh=ArBkVRRAB5Hvap9lCuY6dcFa5nG0SOuaadtHLVMS3oI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=WTz5UL33Eqc2lwrW/94QVKspc9eDYmdi1rYZOP85+IhnAD6AEttjkQFu5YPZbFFqXKE8ZYAKeZldeb3wr4rQzmDFXF1oVCpy9N7xonEx5A77k2qAjKfnSk5NSnLiAnQo3ipGzv/JdB99dRL+Ot5gcpyy7cQPJahgsoBoyt7GKFI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com; spf=pass smtp.mailfrom=icloud.com; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b=ZxD8ifEN; arc=none smtp.client-ip=57.103.78.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=icloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=icloud.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=icloud.com header.i=@icloud.com header.b="ZxD8ifEN" Received: from outbound.st.icloud.com (unknown [127.0.0.2]) by p00-icloudmta-asmtp-us-east-1a-60-percent-10 (Postfix) with ESMTPS id 085271800162; Fri, 17 Jul 2026 16:44:20 +0000 (UTC) X-ICL-RepId: 019f70f6-f646-78c2-a5a8-9dc1ab044d36 X-ICL-Out-Info: HUtFAUMEWwJACUgBTUQeDx5WFlZNRAJCTQhICkMGWQJeCE0HQwZcAFBcHA4EVANbQgtICi1eCF4fTBwdDlgGEhZdRVoOWwRHFBcbXAAXGVFNDlhbCFsEDx9MDFECQgVWXkoMHQRUB10FXVZQAlpLQgRLRWhcBVwcQBdIHV9qS1YUBBFQAVgeVl5aF15NWgJWTQVJBFUDWAJGD00FXwVFCkEOTABeGVkGQQpOAV8FUwVGAEoLXANTA0IXH1UVXx5QXUoMUg9bDh8WVhRfAkAeQjBQG18CQg8cE1YVDU1DEkIVBBFQAVgeVg== Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1784306663; x=1786898663; bh=IcoWptpMMKJfRvm1yIVnGLPBbqqPSHCKZlMZVkgirlQ=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:x-icloud-hme; b=ZxD8ifEN7b8aRl1NYfGicJmcE6DYELUf0Qd10WubY7eLMn/y6DIo+WNmCSdoxTnsh3VRct9wWITtyyGIbWABPQ0nUvSKsScX302ALMZeeo+uLDur3D70GwQZcM81qm3Cucc0N/5FvuBmhR2cx3mJiadTSPUZs0TdkTlvSTyPHhdBEUm7sMLcZQ74YebDT9HZR1QKJiTYKjAPI1o0wyQJDnn83Dr1lIDbSxwpTc/SYCagrlGwatZ0Y0IYGAELX2dVi0ajTSPBsQ/Qvp4eei0oh4nCtcgN3Yx1j9xqWRxrDDsCF8MBz6vviFTEea+63TifE/HEX0/HjRLGhANz7YO2wQ== Received: from [192.168.1.7] (unknown [17.42.251.67]) by p00-icloudmta-asmtp-us-east-1a-60-percent-10 (Postfix) with ESMTPSA id B734718004DC; Fri, 17 Jul 2026 16:44:18 +0000 (UTC) From: LetsDank To: Hamza Mahfooz Cc: Leo Li , Mario Limonciello , Harry Wentland , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 2/2] drm/amd/display: add DMU timeout recovery support In-Reply-To: <178429570497.694276.1089609041510474786.dmub-recovery-v6-test@icloud.com> References: <20260505182105.420525-1-someguy@effective-light.com> <20260505182105.420525-2-someguy@effective-light.com> <178429570497.694276.1089609041510474786.dmub-recovery-v6-test@icloud.com> Content-Transfer-Encoding: 8bit Date: Fri, 17 Jul 2026 19:44:16 +0300 Message-ID: <178430665622.817433.2413622287692814812.gfxhub-stable-followup@icloud.com> X-Mailer: b4 0.14.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Developer-Signature: v=1; a=ed25519-sha256; t=1784306658; l=1310; i=ichi2209@icloud.com; s=default; h=from:subject:message-id; bh=ArBkVRRAB5Hvap9lCuY6dcFa5nG0SOuaadtHLVMS3oI=; b=CWUuXgg1PEAiHyqq03uqN3F0jdvYWw8zJjJAdYXq4drRPjbbmuk028yQ0z0xM8qEcEWq7yUAg 3vSnsWflprABSOoMGhLfQQfN3hqiAN9iDqcn45y+T2xgPGqy3ILlKGQ X-Developer-Key: i=ichi2209@icloud.com; a=ed25519; pk=XxjWf2lZjzshfIjDjk9y0WzmUwfl3qazBLI51WfnrWs= X-Proofpoint-GUID: w3bjnjs-y5_2ErSwc5aNum-ipELnllOs X-Proofpoint-ORIG-GUID: w3bjnjs-y5_2ErSwc5aNum-ipELnllOs X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE3MDE3MSBTYWx0ZWRfXykUdY01ZPP1+ tSy8A/Cqq6jmZjHJ2XutCumk0L/k/c6nW/UFrWF9I04vAqfoNUaoqcGXce2ThCsslOjG2WE1FJb r28dQolaQ7ZUzwSXBqNinf5so0+EBJHlaukZJAAImijXm+4mFfwur2vDptj+pl5dUe3l5U9Qnrm xfm8QrklycqVB+MfTtR8znQ8dgovmhEzhT2QyhIGPAZI/WYQ3erTdVTMrNW+22Pby19Jz4ROwb0 hQVkusegqcahpuyhWCBq9m+uKZOngCnbVULpsJ2gX3Jnm4MVTHscwQJ3l/C+3stHxCtA+KxnC4S gRRVyVahnuFJh3wSyVd Hi, An important follow-up arrived shortly after my previous message. The same separate gfxhub failure has now reproduced on the Fedora 7.1.3-200 kernel with amdgpu.dcdebugmask=0x810, after about 30.5 hours of uptime. The sequence was: [gfxhub] page fault, process Xorg, ring 24, vmid 5 GCVM_L2_PROTECTION_FAULT_STATUS: 0x00501031 Faulty UTCL2 client ID: TCP PERMISSION_FAULTS: 0x3 ring gfx_0.0.0 timeout Ring gfx_0.0.0 reset succeeded Mesa then aborted Xorg in amdgpu_ctx_set_sw_reset_status(), ending the X11 session and returning to SDDM. As in the v7.2-rc3 incident, there were no DMUB, DMCUB, flip_done, or commit-wait timeout messages. I captured a second complete 5.4 MB AMDGPU devcoredump. The fault status, client, Xorg context, Mesa abort path, and ring-reset sequence match the v7.2-rc3 incident. This corrects any impression that the machine is stable against all GPU faults with dcdebugmask=0x810. The workaround still appears to avoid the original DMCUB/page-flip timeout signature, but it does not prevent this separate gfxhub VM fault. The reproduction on both kernels also makes it unlikely that the gfxhub fault was introduced by this patch series. Both devcoredumps and the matching kernel logs are available if useful. Regards, LetsDank