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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6512FC433FE for ; Fri, 19 Nov 2021 16:03:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4EAC61154 for ; Fri, 19 Nov 2021 16:03:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236181AbhKSQGz (ORCPT ); Fri, 19 Nov 2021 11:06:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236178AbhKSQGy (ORCPT ); Fri, 19 Nov 2021 11:06:54 -0500 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43814C061574 for ; Fri, 19 Nov 2021 08:03:52 -0800 (PST) Received: by mail-pj1-x102b.google.com with SMTP id gx15-20020a17090b124f00b001a695f3734aso9226178pjb.0 for ; Fri, 19 Nov 2021 08:03:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kylehuey.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dVl1y7dz5yzJ4ISPiOpYJmuusOkr3uxzfmH+anrgaX0=; b=lNLzz5grJcL0EywAhMja05SHW9eUygNXTKtZgQTXHqcNE3IcqDLr7U1Bc/rHf3k6Nk 1mQ3kHTclvYs0jl3aSAbbDLNi6nu0sJX30vXpGyuO4zUJ+QE32QxlqFT6XWNep4MMz3W hX7TiTqGvoo24R7EPvxePcX71JCNKLq9DLI+G+pE7y7GACDF3kPbqfPgGeg6PTMk0Tl3 r922k7X3j6boaoG3JHogizBD7db0bKuztYPCXmqGV3N77n8dkB14ZEuRVo6VSQzcsJfe uTbYjndK+PCGFaSP9fsT3WWSO1WEW/jkbuT4OaKIqs0DZCSIQLiOI7G/82vvUiNhqBiq IpCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dVl1y7dz5yzJ4ISPiOpYJmuusOkr3uxzfmH+anrgaX0=; b=F6HHV26Gocr9tNpVq4KyvgCWauqZVnp8WJrn8ez+2Q0u7h54rvyyMRwMdRXhby2j2W yZpuICsRboN9J+eSxraS5SLiI1tTFt+0US2ULd+ENXjEckX43U9El4w4BuSsgwl/RtwK 68FE157pSVEvbwK/+rIFibVA7iokrUhcIZvky3v/kTVqalN7wAXLSAUPhOC4zU5l20m3 KTVrMVcGdLWJfvxz/rMvL0LiIHyM9LiVOKJ/05xP1+qAISK+S6vxbTkjac5HhwYvibiT 5YM3I850GpvqoYkVhDKZnELjkLdDNxETMSw06ZWQLns3rjWbPSEgFHJvl5N/CzklftoB hbPQ== X-Gm-Message-State: AOAM532lTTCYq0KWCaR2KVyOl4A603gWDJ/3zYo58rAmAXYnGZ9+BPkX dO/qz2baa4umtq/+rQqyXxzaiybqanZkmwlp X-Google-Smtp-Source: ABdhPJy0I7OeJBwYUukJb+gm4HMPcsPZFQFz2Io92uNtCvJbhNfZYOtwBBIchHRWXe+X3HstC7hC4A== X-Received: by 2002:a17:90b:3a83:: with SMTP id om3mr778565pjb.211.1637337831717; Fri, 19 Nov 2021 08:03:51 -0800 (PST) Received: from minbar.home.kylehuey.com (c-71-198-251-229.hsd1.ca.comcast.net. [71.198.251.229]) by smtp.gmail.com with ESMTPSA id o4sm11067326pjq.23.2021.11.19.08.03.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Nov 2021 08:03:50 -0800 (PST) From: Kyle Huey X-Google-Original-From: Kyle Huey To: "Eric W . Biederman" Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Oleg Nesterov , Al Viro , linux-api@vger.kernel.org, Kees Cook , Robert O'Callahan Subject: Re: [PATCH 6/6] coredump: Limit coredumps to a single thread group Date: Fri, 19 Nov 2021 08:03:48 -0800 Message-Id: <20211119160348.22409-1-khuey@kylehuey.com> X-Mailer: git-send-email 2.34.0 In-Reply-To: <87y27mvnke.fsf@disp2133> References: <87y27mvnke.fsf@disp2133> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org > Solve this by making a userspace visible change to only kill a single > process/thread group. [...] With LinuxThreads long gone I don't > expect anyone to have a notice this behavior change in practice. FWIW rr's test suite does have an explicit test that we correctly record and replay the old behavior. We don't actually care what that behavior is though, so we will update our tests. - Kyle