From: Simon <simonhf@gmail.com>
To: musl@lists.openwall.com
Subject: [musl] Bug report: Reproduction of seg fault caused by musl thread creation race condition
Date: Sun, 26 Jan 2020 16:33:57 -0800 [thread overview]
Message-ID: <CABkUXbdOP8d=BzFTpYetmEEKyEwWqwaW7NmmB9vdJacu-wXABQ@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 672 bytes --]
Hello! I recently had some C code which works normally with glibc but seg
faults sometimes with musl. I managed to reproduce the seg fault via
musl-gcc and Alpine Linux and document it here [1]. Seems to be some kind
of race condition, so hopefully you guys also get a seg fault when you
follow my reproduction steps. Hope this helps and looking forward to any
feedback or helping further if possible, Simon
P.S. musl newbie question: Why does my binary built on Alpine Linux report
a .so being loaded by ldd, but on Ubuntu the same binary is reported as
being static? Also, detail that here [1] too.
[1] https://gist.github.com/simonhf/6d8097f4d6caa572cc42354f494b20ef
[-- Attachment #2: Type: text/html, Size: 836 bytes --]
next reply other threads:[~2020-01-27 0:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-27 0:33 Simon [this message]
2020-01-27 5:28 ` Markus Wichmann
2020-01-27 17:51 ` Rich Felker
2020-01-27 19:59 ` Simon
2020-01-27 20:37 ` Szabolcs Nagy
2020-01-27 20:46 ` Rich Felker
2020-02-03 21:14 ` [musl] Why does musl printf() use so much more stack than other implementations when printf()ing floating point numbers? Simon
2020-02-03 21:57 ` Rich Felker
2020-02-03 23:05 ` Szabolcs Nagy
2020-02-03 23:52 ` Szabolcs Nagy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CABkUXbdOP8d=BzFTpYetmEEKyEwWqwaW7NmmB9vdJacu-wXABQ@mail.gmail.com' \
--to=simonhf@gmail.com \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).