From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 918EFCE7A8B for ; Sun, 24 Sep 2023 13:19:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EEF9D10E1AA; Sun, 24 Sep 2023 13:19:41 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id CEFCC10E1A7; Sun, 24 Sep 2023 13:19:33 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 703B8B808BB; Sun, 24 Sep 2023 13:19:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E82FEC433C8; Sun, 24 Sep 2023 13:19:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695561571; bh=b67eFkGG4FA5qQvRlrX364tY9dG3aYyLchXpY55B+QM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FfWjLrjBUtrjGCepkiW4SpOoEJDnusyds8n/QZyffs+AKPAnF+BF0e4SN5+GF1Msm rD2ate45Ju+dCoEAnsZJZ46oTMtr2DLHXpz12p1jxWCkRNbDqlcDGY4OzUzx5Xap/9 SDY7dIYJu+9oF+9a+P6+4cMcklrVum/OPgK4jCdnzDAXiFR8wQuEQGQ54ckxkCDDZf D1KfFw8uynygkn4FnkLN6DgwqByhV0hGtmWm+x4tspt5uowH20Xs6Z3aqLrJXXI/lM p6W/BOSPiUYPBEU9mpDTomnQuI/QJsay9dDZstCgv604gBXennvHavdq9txkARInlc 57AmV2f4+Liqg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 14/18] drm/amdgpu: Handle null atom context in VBIOS info ioctl Date: Sun, 24 Sep 2023 09:18:51 -0400 Message-Id: <20230924131857.1276330-14-sashal@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230924131857.1276330-1-sashal@kernel.org> References: <20230924131857.1276330-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.133 Content-Transfer-Encoding: 8bit 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: , Cc: Sasha Levin , evan.quan@amd.com, srinivasan.shanmugam@amd.com, guchun.chen@amd.com, Lang.Yu@amd.com, David Francis , Xinhui.Pan@amd.com, amd-gfx@lists.freedesktop.org, marek.olsak@amd.com, dri-devel@lists.freedesktop.org, daniel@ffwll.ch, Alex Deucher , Felix.Kuehling@amd.com, James.Zhu@amd.com, airlied@gmail.com, christian.koenig@amd.com, Graham.Sider@amd.com Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: David Francis [ Upstream commit 5e7e82254270c8cf8b107451c5de01cee2f135ae ] On some APU systems, there is no atom context and so the atom_context struct is null. Add a check to the VBIOS_INFO branch of amdgpu_info_ioctl to handle this case, returning all zeroes. Reviewed-by: Alex Deucher Signed-off-by: David Francis Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index e8485b1f02ed6..70d49b998ee9e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -926,12 +926,17 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) struct atom_context *atom_context; atom_context = adev->mode_info.atom_context; - memcpy(vbios_info.name, atom_context->name, sizeof(atom_context->name)); - memcpy(vbios_info.vbios_pn, atom_context->vbios_pn, sizeof(atom_context->vbios_pn)); - vbios_info.version = atom_context->version; - memcpy(vbios_info.vbios_ver_str, atom_context->vbios_ver_str, - sizeof(atom_context->vbios_ver_str)); - memcpy(vbios_info.date, atom_context->date, sizeof(atom_context->date)); + if (atom_context) { + memcpy(vbios_info.name, atom_context->name, + sizeof(atom_context->name)); + memcpy(vbios_info.vbios_pn, atom_context->vbios_pn, + sizeof(atom_context->vbios_pn)); + vbios_info.version = atom_context->version; + memcpy(vbios_info.vbios_ver_str, atom_context->vbios_ver_str, + sizeof(atom_context->vbios_ver_str)); + memcpy(vbios_info.date, atom_context->date, + sizeof(atom_context->date)); + } return copy_to_user(out, &vbios_info, min((size_t)size, sizeof(vbios_info))) ? -EFAULT : 0; -- 2.40.1