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From: Eli Zaretskii <eliz@gnu.org>
To: "Gerd Möllmann" <gerd.moellmann@gmail.com>
Cc: 56108@debbugs.gnu.org
Subject: bug#56108: 29.0.50; ASAN use-after-free in re_match_2_internal
Date: Wed, 22 Jun 2022 17:24:18 +0300	[thread overview]
Message-ID: <831qvgkc8d.fsf@gnu.org> (raw)
In-Reply-To: <6e56407a-b564-4aa9-b74c-78883727ef09@Spark> (message from Gerd Möllmann on Wed, 22 Jun 2022 16:10:23 +0200)

> Date: Wed, 22 Jun 2022 16:10:23 +0200
> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: 56108@debbugs.gnu.org
> 
> Functions fast_string_match_internal* don't freeze in the sense you explained.  What I don't see so far is
> what could lead to a GC in these cases, between the compile_pattern and the use of its result...

I don't know if something inside re_match_2_internal can call
something that would trigger GC.  There's too much stuff going on
there, what with syntax tables and whatnot.

> Did you find other places where there's no freeze?

string_match_1, I think.





  reply	other threads:[~2022-06-22 14:24 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-20 14:07 bug#56108: 29.0.50; ASAN use-after-free in re_match_2_internal Gerd Möllmann
2022-06-20 19:09 ` Eli Zaretskii
2022-06-22  8:13   ` Gerd Möllmann
2022-06-22 13:38     ` Eli Zaretskii
2022-06-22 14:10       ` Gerd Möllmann
2022-06-22 14:24         ` Eli Zaretskii [this message]
2022-06-22 15:11           ` Gerd Möllmann
2022-06-22 16:19             ` Eli Zaretskii
2022-06-23  5:53               ` Gerd Möllmann
2022-06-23  6:57                 ` Eli Zaretskii
2022-06-23  7:17                   ` Eli Zaretskii
2022-06-23 21:29                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-24  5:55                       ` Eli Zaretskii
2022-06-24  6:01                         ` Gerd Möllmann
2022-06-24  9:35                           ` Gerd Möllmann
2022-06-24 15:40                             ` Eli Zaretskii
2022-06-25  9:18                               ` Eli Zaretskii
2022-06-27 13:26                             ` Eli Zaretskii
2022-06-27 13:29                               ` Gerd Möllmann
2022-06-23  8:24                   ` Gerd Möllmann
2022-06-23  8:37                     ` Eli Zaretskii
2022-06-23  8:49                       ` Gerd Möllmann

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