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bug#33091: 27.0.50; Daily+ crashes in auto-save-hook
From: |
Eli Zaretskii |
Subject: |
bug#33091: 27.0.50; Daily+ crashes in auto-save-hook |
Date: |
Fri, 19 Oct 2018 09:28:34 +0300 |
> From: "Mark A. Hershberger" <mah@everybody.org>
> Cc: 33091@debbugs.gnu.org
> Date: Thu, 18 Oct 2018 16:15:51 -0400
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > IOW, GC segfaults, and then Emacs tries to auto-save the session,
> > which fails.
> >
> > Is it possible that GC hits a stack overflow? Can you try manually
> > establishing whether that is the case by doing what stack_overflow in
> > sysdep.c does?
>
> I don't know how to do this. I can follow directions if you can tell me
> what to do, though.
Given the backtrace you show in your report, I believe the commands
below should do that:
(gdb) frame 13
(gdb) p/x siginfo->si_addr
(gdb) p/x stack_bottom
(gdb) p/x current_thread->stack_top
Stack frame #13 is inside handle_sigsegv, according to your backtrace.