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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 62779C4332E for ; Tue, 16 Mar 2021 17:55:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45E776512B for ; Tue, 16 Mar 2021 17:55:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236081AbhCPRzr (ORCPT ); Tue, 16 Mar 2021 13:55:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:23354 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239451AbhCPRzI (ORCPT ); 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Tue, 16 Mar 2021 17:55:01 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.192.135]) by smtp.corp.redhat.com (Postfix) with SMTP id 744255D9C0; Tue, 16 Mar 2021 17:54:57 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Tue, 16 Mar 2021 18:55:00 +0100 (CET) Date: Tue, 16 Mar 2021 18:54:56 +0100 From: Oleg Nesterov To: Walter Wu Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Matthias Brugger , Andrey Konovalov , Andrew Morton , Jens Axboe , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wsd_upstream , linux-mediatek@lists.infradead.org Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack Message-ID: <20210316175455.GA25881@redhat.com> References: <20210316024410.19967-1-walter-zh.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/16, Walter Wu wrote: > > --- a/kernel/task_work.c > +++ b/kernel/task_work.c > @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work, > { > struct callback_head *head; > > + /* record the work call stack in order to print it in KASAN reports */ > + kasan_record_aux_stack(work); > + > do { > head = READ_ONCE(task->task_works); > if (unlikely(head == &work_exited)) Acked-by: Oleg Nesterov 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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 5FB3DC433DB for ; Tue, 16 Mar 2021 17:57:53 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EAB1765104 for ; 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Tue, 16 Mar 2021 13:55:03 -0400 X-MC-Unique: X_-hKvDyOCOief-DATOHdQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2E413760C7; Tue, 16 Mar 2021 17:55:01 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.192.135]) by smtp.corp.redhat.com (Postfix) with SMTP id 744255D9C0; Tue, 16 Mar 2021 17:54:57 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Tue, 16 Mar 2021 18:55:00 +0100 (CET) Date: Tue, 16 Mar 2021 18:54:56 +0100 From: Oleg Nesterov To: Walter Wu Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Matthias Brugger , Andrey Konovalov , Andrew Morton , Jens Axboe , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wsd_upstream , linux-mediatek@lists.infradead.org Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack Message-ID: <20210316175455.GA25881@redhat.com> References: <20210316024410.19967-1-walter-zh.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210316_175511_852672_DB8C9261 X-CRM114-Status: GOOD ( 11.68 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 03/16, Walter Wu wrote: > > --- a/kernel/task_work.c > +++ b/kernel/task_work.c > @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work, > { > struct callback_head *head; > > + /* record the work call stack in order to print it in KASAN reports */ > + kasan_record_aux_stack(work); > + > do { > head = READ_ONCE(task->task_works); > if (unlikely(head == &work_exited)) Acked-by: Oleg Nesterov _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 12390C433DB for ; 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Tue, 16 Mar 2021 18:55:00 +0100 (CET) Date: Tue, 16 Mar 2021 18:54:56 +0100 From: Oleg Nesterov To: Walter Wu Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Matthias Brugger , Andrey Konovalov , Andrew Morton , Jens Axboe , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wsd_upstream , linux-mediatek@lists.infradead.org Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack Message-ID: <20210316175455.GA25881@redhat.com> References: <20210316024410.19967-1-walter-zh.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210316_175511_619146_740BBBBD X-CRM114-Status: GOOD ( 12.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 03/16, Walter Wu wrote: > > --- a/kernel/task_work.c > +++ b/kernel/task_work.c > @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work, > { > struct callback_head *head; > > + /* record the work call stack in order to print it in KASAN reports */ > + kasan_record_aux_stack(work); > + > do { > head = READ_ONCE(task->task_works); > if (unlikely(head == &work_exited)) Acked-by: Oleg Nesterov _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel