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 553D737708; Sun, 28 Jul 2024 15:50:49 +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=1722181849; cv=none; b=KMQgUgTRM+hqYy1nCqYdMJ2Zf9iGQbixjHqCpbLeF6AsGIIGu6MBV4oiBs2J2QrGkAngSp6AeJANlukW97bhDpV5ClQn7HZdYhFohTt2BMElA0PT3ZkquDOqhU9XJ69cRIZWhr9dSNshBpeItNRc+7bfdLgQ1MrGSAoxlQBTGS4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722181849; c=relaxed/simple; bh=KALLrYV+Zxa0bQhiA9biUBgvIiyIfY5GNyLwImNTXOE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=VCjq4TsElSuhWl34Qb0jLPBMNNg/A6t0fFancUhY/32rjnWtPSrFKF3EiLGLKrRmu2Fv1dloYXLBEtkO2TVyijUbCDCflJlSyRe7BJzNv+T1H4BMqJz3hzQwbvOybhwo+QO2dwnvQloL5btm+ga8H9PDrX1HL0YLbgFwJO5T868= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vLvJ7Umd; 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="vLvJ7Umd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11BDDC116B1; Sun, 28 Jul 2024 15:50:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722181849; bh=KALLrYV+Zxa0bQhiA9biUBgvIiyIfY5GNyLwImNTXOE=; h=From:To:Cc:Subject:Date:From; b=vLvJ7UmdAKAGIuyIgn+llb8bEhBUjJ8JIv3XLRukhOwbSFoJHbbLtCa/1A/jx8Fg1 oYDFySPoR2LXiX2mZ3IJE0TwhprXg4+PQUKLsSlSnBG101BYmkmrYAQNDp3ZjUtzQN a2b3GNg2c4Oxp5+lYVvvSRGfTim6xWJWJ2PRiGPfUWTpwg91ioVx3HfmuC4PQt9JuN u72XpoVke2WVdkmRwrKtXgFsncltny7hz77/AzzwKXdkuruzAzfXRKoC4vjN7eooGm jdnW6V9NQepetrDNpCaNrlxsuwxI9kdL6m/waJS+r8j1UPvnKR90t7oPUMff0QfKvX YX7xDg4KHtVmg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ma Jun , Lijo Lazar , Alex Deucher , Sasha Levin , christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, Hawking.Zhang@amd.com, tao.zhou1@amd.com, kevinyang.wang@amd.com, YiPeng.Chai@amd.com, Stanley.Yang@amd.com, candice.li@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 1/6] drm/amdgpu: Fix the null pointer dereference to ras_manager Date: Sun, 28 Jul 2024 11:50:33 -0400 Message-ID: <20240728155045.2050587-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.281 Content-Transfer-Encoding: 8bit From: Ma Jun [ Upstream commit 4c11d30c95576937c6c35e6f29884761f2dddb43 ] Check ras_manager before using it Signed-off-by: Ma Jun Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index b6fc191c353a7..96aad6cc83b1e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -1053,12 +1053,15 @@ static void amdgpu_ras_interrupt_process_handler(struct work_struct *work) int amdgpu_ras_interrupt_dispatch(struct amdgpu_device *adev, struct ras_dispatch_if *info) { - struct ras_manager *obj = amdgpu_ras_find_obj(adev, &info->head); - struct ras_ih_data *data = &obj->ih_data; + struct ras_manager *obj; + struct ras_ih_data *data; + obj = amdgpu_ras_find_obj(adev, &info->head); if (!obj) return -EINVAL; + data = &obj->ih_data; + if (data->inuse == 0) return 0; -- 2.43.0