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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96DFBC77B76 for ; Sun, 23 Apr 2023 01:41:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229794AbjDWBlV (ORCPT ); Sat, 22 Apr 2023 21:41:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229587AbjDWBlT (ORCPT ); Sat, 22 Apr 2023 21:41:19 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38A311703 for ; Sat, 22 Apr 2023 18:41:19 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-63d4595d60fso21232883b3a.0 for ; Sat, 22 Apr 2023 18:41:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682214078; x=1684806078; h=content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:from:cc:references:to:subject:from:to:cc:subject:date :message-id:reply-to; bh=T2Wm0dw6NKZD+OO07rBlUflSxPOCW2HMZtl0cGPaiPU=; b=dxc97womXKrw/C4VCY2vwiJNANQXn7I0KqsWZWiP1ig6hdSkmPluPumSPat2qWr/mw RsDLb8zJq37S9kOi0WHPkMh1KlwYXU0eJgXgu6lBvQc1zLAjEzfVA9XnjmBvbfKH4qeK 5gw0LHYl2xLJ9YtXxjMQ8xaGRFofjbo0+uftl5v4ZnKK1txd+SQc2i2GniOB+DO4W4fF vXSKgAyJosvOcYQ4hnfxM8SRgs+Ap1MggtKqXv93hq8YfFW5Ljg79nYfbOslXT4B02Jq rwriPo2s6KamdXxOveKOe4TnhNqd4lwx8yKyAFi5cCgaG5y29G88xW5uw8bta6tDq6M0 DpGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682214078; x=1684806078; h=content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:from:cc:references:to:subject:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=T2Wm0dw6NKZD+OO07rBlUflSxPOCW2HMZtl0cGPaiPU=; b=bkzBWKTROL4ZObs2Iei3caFf/6NCf0Q5K5kj2pF5hEni9jca/hcMeh6Fm2mSI9MdBd 22VZ+AXXzbkusiHrTE/Y2s1vv/KbzGl+TZeIq92HdAQ0zU9M09tBVzd047iHYFVXkXEY ptBN/DOCnnf0heEgDzjrQQYzYs9sTX6tU7Do/5Lfskb+E6mL3QKZfUGcy4fikSEQObzV VWUXMZ740RjUS+brH2tn6rsmh1YvWBbgcfCsfCnPlUcUKoIeGOHtW9KcQ8RdGWXqqEBS aadg7YLXxkkkE86dVTls/fJenwbLIRPKKO5N18q1SKPEuaT5k2gXJUCYZQYPJKnPFh+x FZuQ== X-Gm-Message-State: AAQBX9fWgAcYxc2mkJve1D3UHramZihIY6VThVidzCQP82cudzkbQhbI LIjgWaFcIYRJLhwIukcb/9WzNPeTrzk= X-Google-Smtp-Source: AKy350YmVG55jvcKdH6uJwyFHySi7ozpMW5BlfjDt31aKQiVMLPd8e3FtYhZ9CD8ClghGFicUsCIxw== X-Received: by 2002:a05:6a00:2450:b0:634:c34f:e214 with SMTP id d16-20020a056a00245000b00634c34fe214mr15393626pfj.10.1682214078206; Sat, 22 Apr 2023 18:41:18 -0700 (PDT) Received: from [10.1.1.24] (222-152-172-8-fibre.sparkbb.co.nz. [222.152.172.8]) by smtp.gmail.com with ESMTPSA id e21-20020a656895000000b004facdf070d6sm4480633pgt.39.2023.04.22.18.41.14 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 22 Apr 2023 18:41:17 -0700 (PDT) Subject: Re: reliable reproducer, was Re: core dump analysis To: Andreas Schwab References: <4a9c1d0d-07aa-792e-921f-237d5a30fc44.ref@yahoo.com> <54597ab3-2776-2a55-9952-3bfbbc329829@linux-m68k.org> <406cb339-0a0c-4d71-9b5c-c11568793c14@gmail.com> <71af7b52-a1d4-581c-d5af-afce6991c48d@gmail.com> <7ea095ba-7df1-1ffe-e87d-12d46ebe72f6@gmail.com> <2fdc2819-526a-756f-19d0-ac1147f85b63@linux-m68k.org> <868b5214-fa13-dcf7-a671-9843169eea06@gmail.com> <87fs8sz6e9.fsf@igel.home> <878rekz0md.fsf@igel.home> <87o7nfyd7e.fsf@igel.home> <87jzy3y79y.fsf@igel.home> Cc: Finn Thain , debian-68k@lists.debian.org, linux-m68k@lists.linux-m68k.org From: Michael Schmitz Message-ID: <5824d97d-683b-a354-3c39-cb0f54e50bc0@gmail.com> Date: Sun, 23 Apr 2023 13:41:12 +1200 User-Agent: Mozilla/5.0 (X11; Linux ppc; rv:45.0) Gecko/20100101 Icedove/45.4.0 MIME-Version: 1.0 In-Reply-To: <87jzy3y79y.fsf@igel.home> Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org Hi Andreas, Am 23.04.2023 um 08:46 schrieb Andreas Schwab: > On Apr 23 2023, Michael Schmitz wrote: > >> I'll see whether the signal context is available on the stack even if the >> handler isn't passed that parameter. > > The signal context is always on the stack, and used by the > (rt_)sigreturn syscall. True, but at the time the signal handler (sa_handler type) runs, all I have is the user stack pointer upon entry to the handler. I'll have to calculate back from that address, if that is possible. Cheers, Michael