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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 305ABC433DB for ; Fri, 12 Mar 2021 09:21:12 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B5E7164FF3 for ; Fri, 12 Mar 2021 09:21:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5E7164FF3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 39A058D033F; Fri, 12 Mar 2021 04:21:11 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 372578D0317; Fri, 12 Mar 2021 04:21:11 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 212008D033F; Fri, 12 Mar 2021 04:21:11 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0023.hostedemail.com [216.40.44.23]) by kanga.kvack.org (Postfix) with ESMTP id 02C328D0317 for ; Fri, 12 Mar 2021 04:21:10 -0500 (EST) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id B7233181C1921 for ; Fri, 12 Mar 2021 09:21:10 +0000 (UTC) X-FDA: 77910678300.19.F49330E Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf20.hostedemail.com (Postfix) with ESMTP id F107113A for ; Fri, 12 Mar 2021 09:21:05 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CD17BAF49; Fri, 12 Mar 2021 09:21:08 +0000 (UTC) Subject: Re: [PATCH v2] arm: print alloc free paths for address in registers To: maninder1.s@samsung.com, "linux@armlinux.org.uk" , "cl@linux.com" , "penberg@kernel.org" , "rientjes@google.com" , "iamjoonsoo.kim@lge.com" , "akpm@linux-foundation.org" Cc: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , AMIT SAHRAWAT , Vaneet Narang , "Paul E . McKenney" References: <6f34c594-a840-30a5-5eb0-42b30844ec87@suse.cz> <1614239800-27549-1-git-send-email-maninder1.s@samsung.com> <20210311105115epcms5p679b5dd4fb157f85a73f5a36632ee2c43@epcms5p6> From: Vlastimil Babka Message-ID: <9e517b50-de9d-4191-21d0-08f278091b62@suse.cz> Date: Fri, 12 Mar 2021 10:21:07 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: <20210311105115epcms5p679b5dd4fb157f85a73f5a36632ee2c43@epcms5p6> Content-Type: text/plain; charset=utf-8 Content-Language: en-US X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: F107113A X-Stat-Signature: poxnkbnfmptnfcmecawt6heb1u18i6en Received-SPF: none (suse.cz>: No applicable sender policy available) receiver=imf20; identity=mailfrom; envelope-from=""; helo=mx2.suse.de; client-ip=195.135.220.15 X-HE-DKIM-Result: none/none X-HE-Tag: 1615540865-320885 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/11/21 11:51 AM, Maninder Singh wrote: > Hi, >=20 > =C2=A0 >=20 >> Instead of your changes to SL*B, could you check mem_dump_obj() and ot= hers added >> by Paul in 5.12-rc1? >=20 >> (+CC Paul, thus not trimming) >=20 > =C2=A0 >=20 > checked mem_dump_obj(), but it only provides path=C2=A0of allocation an= d not of=C2=A0free. >=20 > /** > =C2=A0* mem_dump_obj - Print available provenance information >=20 > .. >=20 > =C2=A0* if available, the return address and stack trace from the alloc= ation > =C2=A0* of that object. > =C2=A0*/ > void mem_dump_obj(void *object) >=20 > and in case of "Use After Free", Free path is also required. >=20 > So we need to add support for free path in this API if we have to use i= t. I think that would make sense. =C2=A0 > Thanks, >=20 > Maninder Singh >=20