From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 55A561A841C; Wed, 19 Mar 2025 14:39:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742395144; cv=none; b=SNu2vdjn2OIkUCIewI01qVw6sZX1XPXtS172qS6MpLSCBI08G1wyaU6ncXBS7AdzcurMwcWXKpXIpj5OHYpIoPpOFDtA/BmRSs0PupM50SuX0/6BH6UpZPalRkeEjiZkaBKwd6qjL9cDHvMdb4dyWNhPlL4T1dzio1CbB2VQgBo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742395144; c=relaxed/simple; bh=iX1OqZY2rZGviVxUK5qI42O0aIvxe13gDil03XrF8tc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=C6GGP6Y89/edYLjTNcF0VMTT/3Ob71gUp51yAWoRE/TmlCgCb3DRUvTOCMwBPQ/2UF3gAvGSglguGXOJRlEzthpupLpGcfyd+kjdMOxYGfE9DJqTLivt7V55q2uXkAZhRMSbWKVZs9TJbUSI8+sauKJsbaoDFnmM0m1ceBSFEWI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=n1/mK4tl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="n1/mK4tl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C321C4CEE4; Wed, 19 Mar 2025 14:39:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1742395144; bh=iX1OqZY2rZGviVxUK5qI42O0aIvxe13gDil03XrF8tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n1/mK4tlwMJ3gyHvyUtjxVVPCJMetoIH/SpEebPkHGwlzxIdHcJ3hxNnMnibR2uhR QIWTvmPglxFGaocjO8W15g8M0m6HOf9h88BVuPgFN9Ael3CbZ8ewq/+2qltVD0iUSj MrsCEi4TCwA1o+DPxNEaCw6ARrrNvkTr9/ULtspk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Christian=20K=C3=B6nig?= , Natalie Vock , Alex Deucher Subject: [PATCH 6.12 174/231] drm/amdgpu: NULL-check BOs backing store when determining GFX12 PTE flags Date: Wed, 19 Mar 2025 07:31:07 -0700 Message-ID: <20250319143031.139634805@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250319143026.865956961@linuxfoundation.org> References: <20250319143026.865956961@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Natalie Vock commit 6cc30748e17ea2a64051ceaf83a8372484e597f1 upstream. PRT BOs may not have any backing store, so bo->tbo.resource will be NULL. Check for that before dereferencing. Fixes: 0cce5f285d9a ("drm/amdkfd: Check correct memory types for is_system variable") Reviewed-by: Christian König Signed-off-by: Natalie Vock Signed-off-by: Alex Deucher (cherry picked from commit 3e3fcd29b505cebed659311337ea03b7698767fc) Cc: stable@vger.kernel.org # 6.12.x Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c @@ -525,8 +525,9 @@ static void gmc_v12_0_get_vm_pte(struct bo_adev = amdgpu_ttm_adev(bo->tbo.bdev); coherent = bo->flags & AMDGPU_GEM_CREATE_COHERENT; - is_system = (bo->tbo.resource->mem_type == TTM_PL_TT) || - (bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT); + is_system = bo->tbo.resource && + (bo->tbo.resource->mem_type == TTM_PL_TT || + bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT); if (bo && bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC) *flags |= AMDGPU_PTE_DCC;