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 1A33938CFF0; Sat, 28 Feb 2026 17:36:46 +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=1772300207; cv=none; b=tbSBYLdbs+lu5mB1MrWLdk7YVFcsk19eYgkwNoBCaqaupb49Ln+0g+f2mfV92PnTwMjZ3BBvSAlPA54LpRVxCXcJvhs/bs6Vbx/AMZf0jaKGB+Vbty5QQTJY+B1mJvMpvXhlnjRPgEbqI6ND5ktXtIgdL5SRKq6hh3qM0/EfSu8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300207; c=relaxed/simple; bh=uokOkRCSMVLxsGu3rqxKfmFg2fGZyt7kKmsiD3KiJqM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SCYPXG+6ZehORA9leiAAh5JRFW3zWgDljpRaxj/t7y6YubmhlKkYwWGWq7hnPuUyRJRkbJakLbSezfseYkc59/XayMTpxQxfNBVjsDho+khCPsxAx2QCMLrpcgLNCMu715KIIk6WxClWpgXUjzjnSnCaCa+V5Sqlu5+mewjqyPE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lrXLm8y2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lrXLm8y2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 174CBC19423; Sat, 28 Feb 2026 17:36:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300206; bh=uokOkRCSMVLxsGu3rqxKfmFg2fGZyt7kKmsiD3KiJqM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lrXLm8y2/GtRcoh60QQKXwLxKBEHT98Of7Yz9or3NLqUrzO8oeFGme3Z/Ji9BRI+S 99KdACBB+TPL1fBbMBp7DppPi84i/0oFf46Pz1TecVJNE2/MYS8BweU4B3dkUNybed 69vGfV2rMr1JeLqtCeEnP95HzG82AXp4xzdAVi/T2DrSlRr+PINbUaNiUFiI2WmhjZ xFpqqILpnQ9x/i+v6iVq5RIT4PLOSVeOmiL77JEFQLdKThuYZo5dhZaPHvu50rTwDj m20TKDHNXfUpK73Zmu1SNDZlxeOXt7d1oFP1qE9u0BPSbuDn4lykulF3aD4zJi/IP0 qyA57hoiZ6a3g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jinzhou Su , Yang Wang , Alex Deucher , Sasha Levin Subject: [PATCH 6.19 225/844] drm/amd/pm: Fix null pointer dereference issue Date: Sat, 28 Feb 2026 12:22:18 -0500 Message-ID: <20260228173244.1509663-226-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Jinzhou Su [ Upstream commit 1197366cca89a4c44c541ddedb8ce8bf0757993d ] If SMU is disabled, during RAS initialization, there will be null pointer dereference issue here. Signed-off-by: Jinzhou Su Reviewed-by: Yang Wang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index f51fa265230b3..2a0e826d0317d 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -618,6 +618,9 @@ int amdgpu_smu_ras_send_msg(struct amdgpu_device *adev, enum smu_message_type ms struct smu_context *smu = adev->powerplay.pp_handle; int ret = -EOPNOTSUPP; + if (!smu) + return ret; + if (smu->ppt_funcs && smu->ppt_funcs->ras_send_msg) ret = smu->ppt_funcs->ras_send_msg(smu, msg, param, read_arg); -- 2.51.0