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From: Eli Zaretskii <eliz@gnu.org>
To: Pip Cet <pipcet@gmail.com>
Cc: akrl@sdf.org, 47067@debbugs.gnu.org
Subject: bug#47067: 28.0.50; [feature/native-comp] Crash while scrolling through dispnew.c
Date: Sat, 13 Mar 2021 19:26:48 +0200	[thread overview]
Message-ID: <834khfhsmf.fsf@gnu.org> (raw)
In-Reply-To: <CAOqdjBf-a4Nwdh_yQgvya3ZRMirU8gHV8x1W-sZyZ2ES+p-mvA@mail.gmail.com> (message from Pip Cet on Sat, 13 Mar 2021 17:10:08 +0000)

> From: Pip Cet <pipcet@gmail.com>
> Date: Sat, 13 Mar 2021 17:10:08 +0000
> Cc: Andrea Corallo <akrl@sdf.org>, 47067@debbugs.gnu.org
> 
> > > It's a long function, that might not have been enough.
> >
> > But since I found those two, everything before that is irrelevant,
> > right?
> 
> Assuming all code paths hit these insns, yes.

Then tell me how far back to go.

Or, better yet, perhaps there's a way of displaying that code in C?

> Since mingw (at least the version I could find) declares setjmp with
> the "returns_twice" attribute, I'm assuming their implementation is
> not such that you can call it through a function pointer.

I think you are looking at a 64-bit MinGW64, but I'm out of my depth
here anyway.  If you want to pursue this further, the implementation I
use is in MSVCRT.DLL.

> > > > Note how arguments to Funcall's are the same, whereas arguments to
> > > > funcall_lambda's aren't.  Even the garbage in the 2 arguments to
> > > > wrong_type_argument are identical.
> > >
> > > Which non-stack addresses are invariant in that backtrace?
> >
> > Not sure how stack-based vs non-stack based is important here.
> 
> If non-stack addresses vary between runs and stack addresses don't, I
> don't see any evidence we're looking at corruption here.

Why would non-stack base addresses change?  There's no ASLR here.

Anyway, if that doesn't help, just forget it.





  reply	other threads:[~2021-03-13 17:26 UTC|newest]

Thread overview: 115+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-11 11:27 bug#47067: 28.0.50; [feature/native-comp] Crash while scrolling through dispnew.c Eli Zaretskii
2021-03-11 12:19 ` Eli Zaretskii
2021-03-11 14:07 ` Eli Zaretskii
2021-03-12  6:46 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12  8:10   ` Eli Zaretskii
2021-03-12 12:04     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 12:51       ` Eli Zaretskii
2021-03-12 15:27         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 15:50           ` Eli Zaretskii
2021-03-12 16:08             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 16:14               ` Eli Zaretskii
2021-03-12 19:30                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 19:48                   ` Eli Zaretskii
2021-03-12 20:21                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13  7:11                       ` Eli Zaretskii
2021-03-13 19:51                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13 20:07                           ` Eli Zaretskii
2021-03-13 20:20                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  7:19                               ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  8:02                                 ` Eli Zaretskii
2021-03-14  8:10                                   ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14 19:29                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13 19:48                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 16:23               ` Eli Zaretskii
2021-03-12 19:04                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 19:32                   ` Eli Zaretskii
2021-03-12 20:10                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13  8:34                       ` Eli Zaretskii
2021-03-19  9:42                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-19 12:10                           ` Eli Zaretskii
2021-03-19 14:05                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-19 14:09                               ` Eli Zaretskii
2021-03-20  9:52                                 ` Eli Zaretskii
2021-03-21  8:26                                   ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-21  9:52                                     ` Eli Zaretskii
2021-03-21 11:56                                       ` Eli Zaretskii
2021-03-21 14:37                                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-21 15:34                                           ` Eli Zaretskii
2021-03-21 15:41                                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-21 15:54                                               ` Eli Zaretskii
2021-03-21 16:41                                                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-21 17:01                                                   ` Eli Zaretskii
2021-03-21 18:36                                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-25 16:51                                                       ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-25 17:03                                                         ` Eli Zaretskii
2021-03-25 20:24                                                           ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-25 20:43                                                             ` Eli Zaretskii
2021-04-04 20:52                                                               ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-05 15:06                                                                 ` Eli Zaretskii
2021-04-05 16:09                                                                   ` Eli Zaretskii
2021-04-05 17:58                                                                     ` Eli Zaretskii
2021-04-06 13:17                                                                       ` Eli Zaretskii
2021-04-06 13:29                                                                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-06 13:53                                                                           ` Eli Zaretskii
2021-04-06 14:01                                                                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-05 18:45                                                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-05 18:04                                                                   ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-05 18:19                                                                     ` Eli Zaretskii
2021-04-05 18:47                                                                       ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-05 19:22                                                                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-06 15:49                                                                           ` Eli Zaretskii
2021-04-06 16:06                                                                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-06 16:09                                                                               ` Eli Zaretskii
2021-03-21 14:36                                       ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-12 18:42         ` Pip Cet
2021-03-12 19:50           ` Eli Zaretskii
2021-03-13  8:18             ` Pip Cet
2021-03-13  8:47               ` Eli Zaretskii
2021-03-13  8:53                 ` Pip Cet
2021-03-13 11:10                   ` Eli Zaretskii
2021-03-13 11:23                     ` Eli Zaretskii
2021-03-13 11:24                     ` Pip Cet
2021-03-13 15:27                       ` Eli Zaretskii
2021-03-13 15:45                         ` Pip Cet
2021-03-13 16:21                           ` Eli Zaretskii
2021-03-13 16:32                             ` Pip Cet
2021-03-13 16:53                               ` Eli Zaretskii
2021-03-13 17:10                                 ` Pip Cet
2021-03-13 17:26                                   ` Eli Zaretskii [this message]
2021-03-13 18:55                                     ` Pip Cet
2021-03-13 19:43                                       ` Eli Zaretskii
2021-03-13 20:53                                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13 21:00                                   ` Pip Cet
2021-03-13 21:07                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-13 21:11                                       ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  6:07                                       ` Eli Zaretskii
2021-03-14  6:53                                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  7:21                                           ` Eli Zaretskii
2021-03-14  7:31                                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  7:48                                               ` Eli Zaretskii
2021-03-14  8:02                                                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  8:06                                                 ` Pip Cet
2021-03-14 11:39                                                   ` Eli Zaretskii
2021-03-14 11:44                                                     ` Pip Cet
2021-03-14 12:08                                                       ` Eli Zaretskii
2021-03-14 12:09                                                         ` Pip Cet
2021-03-14 12:17                                                           ` Pip Cet
2021-03-14 13:31                                                             ` Eli Zaretskii
2021-03-14 14:08                                                               ` Eli Zaretskii
2021-03-14 18:47                                                                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
     [not found]                                                                   ` <83mtv5frr4.fsf@gnu.org>
2021-03-14 20:30                                                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-15 18:36                                                                       ` Eli Zaretskii
2021-03-15 20:17                                                                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-16 13:25                                                                           ` Eli Zaretskii
2021-03-14  8:03                                               ` Pip Cet
2021-03-14  5:55                                   ` Eli Zaretskii
2021-03-14  6:57                                     ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14  8:20                                       ` Eli Zaretskii
2021-03-13 17:09                               ` Eli Zaretskii
2021-03-14 12:17                           ` Eli Zaretskii
2021-03-14 19:00                             ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-14 19:48                               ` Eli Zaretskii
2021-03-14 20:36                                 ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-03-15  3:24                                   ` Eli Zaretskii
2021-03-13 20:03                         ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors

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