From patchwork Mon Dec 6 14:55:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 521571 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62B6DC433FE for ; Mon, 6 Dec 2021 15:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345621AbhLFPHJ (ORCPT ); Mon, 6 Dec 2021 10:07:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345708AbhLFPEv (ORCPT ); Mon, 6 Dec 2021 10:04:51 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFAA5C061354; Mon, 6 Dec 2021 07:01:22 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5E93761322; Mon, 6 Dec 2021 15:01:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D33AC341C2; Mon, 6 Dec 2021 15:01:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1638802881; bh=rzhNHhs1j2g0urBtPmF4JNDjLmj+5T+5w+5qmfRitvA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IdrRfxTmQaDlE3Pc8etuloK261umfIt6Yf5UgcMnFp0p5DtmnDVyPvTq0rn3ySSTR H1ZOZCkBL+GNaQD/YN3giF/ugES9DA8dEh4WQwiX/dHkxPHOUq0FB27y2K6Envs+ww 30aUdpo3HCYCM3oAwblMH0uKlTdeYeX3oA4MezcY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christian Brauner , Todd Kjos Subject: [PATCH 4.9 06/62] binder: fix test regression due to sender_euid change Date: Mon, 6 Dec 2021 15:55:49 +0100 Message-Id: <20211206145549.378566976@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211206145549.155163074@linuxfoundation.org> References: <20211206145549.155163074@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Todd Kjos commit c21a80ca0684ec2910344d72556c816cb8940c01 upstream. This is a partial revert of commit 29bc22ac5e5b ("binder: use euid from cred instead of using task"). Setting sender_euid using proc->cred caused some Android system test regressions that need further investigation. It is a partial reversion because subsequent patches rely on proc->cred. Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task") Cc: stable@vger.kernel.org # 4.4+ Acked-by: Christian Brauner Signed-off-by: Todd Kjos Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66 Link: https://lore.kernel.org/r/20211112180720.2858135-1-tkjos@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -1506,7 +1506,7 @@ static void binder_transaction(struct bi t->from = thread; else t->from = NULL; - t->sender_euid = proc->cred->euid; + t->sender_euid = task_euid(proc->tsk); t->to_proc = target_proc; t->to_thread = target_thread; t->code = tr->code;