From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 2634 invoked from network); 1 Oct 2020 06:08:44 -0000 Received: from mother.openwall.net (195.42.179.200) by inbox.vuxu.org with ESMTPUTF8; 1 Oct 2020 06:08:44 -0000 Received: (qmail 26253 invoked by uid 550); 1 Oct 2020 06:08:41 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 26235 invoked from network); 1 Oct 2020 06:08:40 -0000 From: Florian Weimer To: Rich Felker Cc: Carlos O'Donell via Libc-alpha , musl@lists.openwall.com References: <20200927141952.121047-1-carlos@redhat.com> <871rinm1fx.fsf@mid.deneb.enyo.de> <20200928234833.GC17637@brightrain.aerifal.cx> <87d025jcn0.fsf@mid.deneb.enyo.de> <20200929144207.GD17637@brightrain.aerifal.cx> <20201001023018.GL17637@brightrain.aerifal.cx> Date: Thu, 01 Oct 2020 08:08:24 +0200 In-Reply-To: <20201001023018.GL17637@brightrain.aerifal.cx> (Rich Felker's message of "Wed, 30 Sep 2020 22:30:19 -0400") Message-ID: <87o8lmeaw7.fsf@mid.deneb.enyo.de> MIME-Version: 1.0 Content-Type: text/plain Subject: [musl] Re: [PATCH] Make abort() AS-safe (Bug 26275). * Rich Felker: > Even without fork, execve and posix_spawn can also see the SIGABRT > disposition change made by abort(), passing it on to a process that > should have started with a disposition of SIG_IGN if you hit exactly > the wrong spot in the race. My feeling is that it's not worth bothering with this kind of leakage. We've had this bug forever in glibc, and no one has complained about it. Carlos is investigating removal of the abort lock from glibc, I think.