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 X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 492B8C04AAC for ; Mon, 20 May 2019 12:37:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1FF1520645 for ; Mon, 20 May 2019 12:37:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558355847; bh=x62WriVRkN9FKAQvcN+jmk/ARSI//BBip78pCZHD35o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lzFT3kS8n/NF2dG0NtCUxToEunXDcfjcsoeZHS9ca7VAeh5Ygehf9WtvsjC7ihB0g YctGhMM/fdRwMnb7dN/UVtKBEFcccHgHgG/YK47A8GmuXNgPye76mH8f9VdqYCUDcD j8qCFhoCQhFAeHRa+Wq5Ih86MajgDus1GLCUhYn0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391282AbfETMg1 (ORCPT ); Mon, 20 May 2019 08:36:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:55532 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391279AbfETMg0 (ORCPT ); Mon, 20 May 2019 08:36:26 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C9932216C4; Mon, 20 May 2019 12:36:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558355786; bh=x62WriVRkN9FKAQvcN+jmk/ARSI//BBip78pCZHD35o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m4Vu4e2G4ywWxIlwU80mLc84wlfF9z3n4fWONYj/sIKMmmSulAs3kiEnPdwWM1mcB ywZirRTRzJjX83H/DwE1lM9RzqIQlbSDCKT8cUHinCqwshYD6kM6C0tI+UOt7Y8G54 q6MQZx3kMrefA7aReYbOiSa7PZioF2zou+CEtwZQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Erhard F." , Christophe Leroy , Michael Ellerman Subject: [PATCH 5.1 123/128] powerpc/32s: fix flush_hash_pages() on SMP Date: Mon, 20 May 2019 14:15:10 +0200 Message-Id: <20190520115256.917618940@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190520115249.449077487@linuxfoundation.org> References: <20190520115249.449077487@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Christophe Leroy commit 397d2300b08cdee052053e362018cdb6dd65eea2 upstream. flush_hash_pages() runs with data translation off, so current task_struct has to be accesssed using physical address. Fixes: f7354ccac844 ("powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU") Cc: stable@vger.kernel.org # v5.1+ Reported-by: Erhard F. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/mm/hash_low_32.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/powerpc/mm/hash_low_32.S +++ b/arch/powerpc/mm/hash_low_32.S @@ -539,7 +539,8 @@ _GLOBAL(flush_hash_pages) #ifdef CONFIG_SMP lis r9, (mmu_hash_lock - PAGE_OFFSET)@ha addi r9, r9, (mmu_hash_lock - PAGE_OFFSET)@l - lwz r8,TASK_CPU(r2) + tophys (r8, r2) + lwz r8, TASK_CPU(r8) oris r8,r8,9 10: lwarx r0,0,r9 cmpi 0,r0,0