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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 6B0EEC4320E for ; Wed, 28 Jul 2021 13:47:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 54E5460EC0 for ; Wed, 28 Jul 2021 13:47:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236997AbhG1Nrq (ORCPT ); Wed, 28 Jul 2021 09:47:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236876AbhG1NqW (ORCPT ); Wed, 28 Jul 2021 09:46:22 -0400 Received: from ustc.edu.cn (email6.ustc.edu.cn [IPv6:2001:da8:d800::8]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E01C1C0617B0 for ; Wed, 28 Jul 2021 06:45:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mail.ustc.edu.cn; s=dkim; h=Received:Date:From:To:Cc:Subject: Message-ID:In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=gSlg8rRsSXoJ0fWh8d+x+IcEx/wtHhvBcH sY6dFKF0A=; b=ryb3fbKBlgKMA7reFRVg6exgROkuPU0THvFSabOvpO+g9BEPCX tN1gXX639yATePUgxA9cf763wOW0BXsDGKGp5vIqIZ/VDL/51RF18sUhdf88n34S CJ3CwbkrW1Jx1f7I6siaaXlQB5LQG3C3TEVFiPXfGrEt6dQhkFokIMefg= Received: from xhacker (unknown [101.86.20.15]) by newmailweb.ustc.edu.cn (Coremail) with SMTP id LkAmygA3Tkx8XwFhDnNaAA--.1287S2; Wed, 28 Jul 2021 21:45:32 +0800 (CST) Date: Wed, 28 Jul 2021 21:39:34 +0800 From: Jisheng Zhang To: Changbin Du Cc: Jisheng Zhang , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] riscv: stacktrace: fix dump_backtrace/walk_stackframe with NULL task Message-ID: <20210728213934.5a0ee52e@xhacker> In-Reply-To: <20210727221656.wq3ponbzhvftfxc5@mail.google.com> References: <20210627092659.46193-1-changbin.du@gmail.com> <20210628134404.4c470112@xhacker.debian> <20210727221656.wq3ponbzhvftfxc5@mail.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-CM-TRANSID: LkAmygA3Tkx8XwFhDnNaAA--.1287S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtw17GFW5WrWrXrW8KF1Dtrb_yoW3Gwc_Xr Z3A3WDCrsrZrZ7Ca93Jr13ZryDKFW8Jr4rKw4v9r95Awn8G398JrnYkF1fJF1DKrn7ua43 Gr9xX3WFg342vjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbrAYjsxI4VWxJwAYFVCjjxCrM7AC8VAFwI0_Gr0_Xr1l1xkIjI8I 6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM2 8CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0 cI8IcVCY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4 A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IE w4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMc vjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvEwIxGrwCF04k20xvY0x0EwIxGrwCFx2IqxVCF s4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r 1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWU JVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r W3Jr0E3s1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8 JbIYCTnIWIevJa73UjIFyTuYvjxU7GYLDUUUU X-CM-SenderInfo: xmv2xttqjtqzxdloh3xvwfhvlgxou0/ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 28 Jul 2021 06:16:56 +0800 Changbin Du wrote: > On Mon, Jun 28, 2021 at 01:44:04PM +0800, Jisheng Zhang wrote: > > On Sun, 27 Jun 2021 17:26:59 +0800 > > Changbin Du wrote: > > > > > > > > > > > > > Some places try to show backtrace with NULL task, and expect the task is > > > 'current'. For example, dump_stack()->show_stack(NULL,...). So the > > > stacktrace code should take care of this case. > > > > I fixed this issue one week ago: > > > > http://lists.infradead.org/pipermail/linux-riscv/2021-June/007258.html > > I still see this issue on mainline. Is your fix merged? Thanks! Nope, the fix is missed twice. Palmer has added the fix patch into fix branch, I help it will be in next rc Regards