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bug#61960: 30.0.50; Unexec build reliably crashes during loadup
From: |
Konstantin Kharlamov |
Subject: |
bug#61960: 30.0.50; Unexec build reliably crashes during loadup |
Date: |
Sun, 05 Mar 2023 00:56:18 +0300 |
User-agent: |
Evolution 3.46.4 |
On Sat, 2023-03-04 at 21:45 +0000, Andrea Corallo wrote:
> Konstantin Kharlamov <hi-angel@yandex.ru> writes:
>
> > Oh, I am sorry, I posted the configuration line from the wrong emacs build.
> > It's
> > supposed to be:
> >
> > --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib --localstatedir=/var -
> > -
> > mandir=/usr/share/man --with-gameuser=:games --with-modules --without-libotf
> > --
> > without-m17n-flt --without-gconf --with-native-compilation=yes --with-
> > xinput2 --
> > with-x-toolkit=gtk3 --without-xaw3d --with-sound=no --with-tree-sitter --
> > with-
> > unexec --without-gpm --without-compress-install 'CFLAGS=-O0 -g3'
>
> Hi Konstantin,
>
> maybe the crash you see is not related but native-compilation is not
> supposed to work with unexec builds.
>
> I think we should really add a configure time error for this. Eli could
> this change go to emacs-29?
emacs-29 haven't got the BLOCK_ALIGN change, so is unaffected.
I should note though that I'm not the reporter :)
---------------
Regarding my current findings: apparently the `unexec` has always been broken.
I built it with sanitizer and found out that the variable `bss_size_growth`
when doing the dump has too big size. The only difference between "before" and
"after" the BLOCK_ALIGN change is that the difference "after" became quite
large. It was just 440 bytes before, and became 31494584 bytes after.
However, when built with sanitizer, sanitizer catches the problem in both
cases, so there's that.
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup,
Konstantin Kharlamov <=
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/05
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/06
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Andrea Corallo, 2023/03/07
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/07
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/11
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/12
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/15