From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 7CBAB2AD35; Sat, 12 Sep 2026 07:28:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789198137; cv=none; b=h6QO4nxtvFisW1vOKR5sbpoQDlQQ70e2C9izOBblQxdVwmod06NQa+0AIL6yA3AQMAROypGF5P3jXULY1jTTF0sKNH2WjuxbP6JXDMSv1ctTRO10wgKEfbfx+UYewGfCoIoDkL1czO09Oy97MU0Tm2BTyOQIR8b36a+Jy3BKNfY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789198137; c=relaxed/simple; bh=GSjjz6TY9ZsrsBrn3b40y4d6sgTORQl2EmH5/rQY2tw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=l2PmP6hkN43XAjAX93MvpwyGqwhS3XZBZ99TbX6Id7amd/Gu41NlKFc4wjlrs9AjghKxLvkJnC/Ks4zBr02ZdnzSYd8ZI1KSQ1R9YvNd/Y39T/BdlTIoFzzJN5hqoLbh+VWYotGbhA1S1DpjDgsxy4znwVq5STStFN7JGHX1Z2k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=U+heCQig; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="U+heCQig" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1A7D1F000FF; Sat, 12 Sep 2026 07:28:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789198135; bh=hbcmqgHhLqLPs6m6LAVDPWBt3yw6fx0/avi+bkc5QvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=U+heCQigi6cAjxAERNB+Flgw2fzid7mDQeQfrOhF1gW+I7yetH6AXMFdjjvzKgBs0 1CusshOdMIqPCE4GXXgEQD+nWTWKVOP84NpGUPhZwMTaE6GkVHj6Rh6YhNFx9qfVGn n2coHU4T9S+MuhO14OzQpsLJfLjkIlgI2sFc23zA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Geoffrey McRae , Amber Lin , Alex Deucher , Sasha Levin Subject: [PATCH 7.2 0276/1815] drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC Date: Sat, 12 Sep 2026 08:33:46 +0200 Message-ID: <20260912065655.445654365@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065648.999753832@linuxfoundation.org> References: <20260912065648.999753832@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geoffrey McRae [ Upstream commit 2c256086a363f01f9840a57949506eccf5c990a6 ] The loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries uninitialized for multi-XCC GPUs. This causes null pointer dereferences when accessing arrays indexed by XCC ID >= 2. Extend the loop to cover all XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC arrays. Fixes: a132fc9bc2f8 ("drm/amdgpu: Fixup boost mes detect hang array size") Signed-off-by: Geoffrey McRae Reviewed-by: Amber Lin Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index e3972673fd641..c47e5ffd3d0c7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -237,7 +237,7 @@ int amdgpu_mes_init(struct amdgpu_device *adev) } if (adev->mes.hung_queue_db_array_size) { - for (i = 0; i < AMDGPU_MAX_MES_PIPES; i++) { + for (i = 0; i < AMDGPU_MAX_MES_PIPES * num_xcc; i++) { r = amdgpu_bo_create_kernel(adev, adev->mes.hung_queue_db_array_size * sizeof(u32), PAGE_SIZE, -- 2.53.0