From: Florian Weimer <fw@deneb.enyo.de>
To: Rich Felker <dalias@libc.org>
Cc: Carlos O'Donell via Libc-alpha <libc-alpha@sourceware.org>,
musl@lists.openwall.com
Subject: [musl] Re: [PATCH] Make abort() AS-safe (Bug 26275).
Date: Thu, 01 Oct 2020 08:08:24 +0200 [thread overview]
Message-ID: <87o8lmeaw7.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <20201001023018.GL17637@brightrain.aerifal.cx> (Rich Felker's message of "Wed, 30 Sep 2020 22:30:19 -0400")
* 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.
next prev parent reply other threads:[~2020-10-01 6:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200927141952.121047-1-carlos@redhat.com>
[not found] ` <871rinm1fx.fsf@mid.deneb.enyo.de>
[not found] ` <20200928234833.GC17637@brightrain.aerifal.cx>
[not found] ` <87d025jcn0.fsf@mid.deneb.enyo.de>
[not found] ` <20200929144207.GD17637@brightrain.aerifal.cx>
2020-10-01 2:30 ` Rich Felker
2020-10-01 6:08 ` Florian Weimer [this message]
2020-10-01 14:39 ` Rich Felker
2020-10-01 15:11 ` Florian Weimer
2020-10-01 15:28 ` Rich Felker
2020-10-01 14:49 ` Carlos O'Donell
2020-10-01 14:55 ` Rich Felker
2020-10-10 0:26 ` Rich Felker
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