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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 86B82C4338F for ; Tue, 27 Jul 2021 22:17:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48FEA60FEA for ; Tue, 27 Jul 2021 22:17:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232340AbhG0WRE (ORCPT ); Tue, 27 Jul 2021 18:17:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231706AbhG0WRC (ORCPT ); Tue, 27 Jul 2021 18:17:02 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C93CC061757 for ; Tue, 27 Jul 2021 15:17:01 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id q17-20020a17090a2e11b02901757deaf2c8so1472129pjd.0 for ; Tue, 27 Jul 2021 15:17:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=P1d9rZ1oYibIdHcSFP8OH769BC+V4C1W5//f6yOaEyc=; b=LS83kkwUb+IGU887vVihaCeocobOMswJ2zbDSo6QbCumBxka3rMnfNk+UDoOV8j0Fz rDizPV7rSAr8ulto+OqWlJAfPYqDS9RojyXNAl+SLClg1PnZPRf4naI7UTLphMmoH8XL 0hNNzCgG8/144+auWDESC0+3ZidmvcWYpVIRnOUa8uw9lsZ4U1VFY8zWURolgT7gLQfG Dfby7F6+/rtTQxjFn6LsqsX7pohOvUEmLY6R5snTwFdZsrVCTiPoN6GL0v1G0E2KVw+s zbFZZmo8CQwCKf0eIQgmmpV58+A+TIKMUlLJb7BiqjY8WGJypNUfgG4TK3H3lmTEaU6p Q/VA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=P1d9rZ1oYibIdHcSFP8OH769BC+V4C1W5//f6yOaEyc=; b=lhTaaNn7jfzC/6I8GqhEDwaZP4TfBxFK7LqOLpWsy/NXGHpkPxspdTmuRP+YeHAt7b /dioAgvQjyI/Z3LHFodJqDt0hfwUNZjBjjXER1yuqi65g+y/q825xCw3t3QxmVqI+vG1 hO1dDs9geiqvVX8x1U1x0Zt5FZjNWrsQzRBGE/2q52Qbo8AIewzH694thATgflkhOskl Nik6snS11CAB1s4T6k9dKHLc4+3f0E5cmvJgqNiAUVex1yWbVcBMVX7PXleVSTCx/TOp nW8bOaM3E2kdvIEH8/RDuof7BpCzLRmo/XSaCoQQ4d3LKw/pqx4CZCr8yNPbOoIlwN9L lZPg== X-Gm-Message-State: AOAM531ZKfRLG5fLfAd++ox24ZLZmL7KqHnKE2fHp/3SSJusaZjlZiZo cFyZU3bTe14Kv+7BM+dB/aU= X-Google-Smtp-Source: ABdhPJxWFhl0R6uivd9of6xzOQF30aYFleE1PTX+ZKeuyZQxGt0wy/4WWKx3OrVQGfKlyRcpzUwOJw== X-Received: by 2002:a65:4286:: with SMTP id j6mr26146974pgp.10.1627424220879; Tue, 27 Jul 2021 15:17:00 -0700 (PDT) Received: from mail.google.com ([141.164.41.4]) by smtp.gmail.com with ESMTPSA id y139sm4752532pfb.107.2021.07.27.15.16.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jul 2021 15:17:00 -0700 (PDT) Date: Wed, 28 Jul 2021 06:16:56 +0800 From: Changbin Du To: Jisheng Zhang Cc: Changbin Du , 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: <20210727221656.wq3ponbzhvftfxc5@mail.google.com> References: <20210627092659.46193-1-changbin.du@gmail.com> <20210628134404.4c470112@xhacker.debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210628134404.4c470112@xhacker.debian> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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! -- Cheers, Changbin Du