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bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs
From: |
Gerd Möllmann |
Subject: |
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs |
Date: |
Fri, 07 Oct 2022 13:11:39 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Po Lu <luangruo@yahoo.com> writes:
> Gerd Möllmann <gerd.moellmann@gmail.com> writes:
>
>> Redisplay has two phases:
>>
>> 1. Building desired matrices, that is, what should be on the screen
>> after redisplay.
>
> Well, at least there's this in redisplay_internal (I think you wrote
> it):
>
> /* I don't think this happens but let's be paranoid. */
> if (redisplaying_p) <=================================
> return;
>
> So perhaps the right thing to do would be to replace the comment with
> one saying that process_pending_signals can potentially cause redisplay
> to be called within itself.
I'd rather first understand what happens and why, which I don't.
Otherwise the comment would be no good.
So, do you agree that block_input wouldn't solve the problem? Or does
it?
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, (continued)
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Po Lu, 2022/10/06
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Po Lu, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Po Lu, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs,
Gerd Möllmann <=
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Po Lu, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
- bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Po Lu, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Gerd Möllmann, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07
bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs, Eli Zaretskii, 2022/10/07