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Re: SEGV in alloc.c on x86_64
From: |
Reiner Steib |
Subject: |
Re: SEGV in alloc.c on x86_64 |
Date: |
Fri, 25 Feb 2005 16:37:05 +0100 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
On Mon, Feb 21 2005, Reiner Steib wrote:
> While using Gnus, Emacs received SIGSEGV. See gdb backtrace and
> xbacktrace below. The gdb session is still running so I can provide
> more information if necessary.
[...]
> In GNU Emacs 22.0.50.14 (x86_64-unknown-linux-gnu, GTK+ Version 2.4.9)
> of 2005-02-21 on bridgekeeper
[...]
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 182940272320 (LWP 27119)]
> Fcons (car=22960485, cdr=9613345)
> at /home/dept/ste/src/links/emacs/cvs-HEAD/emacs/src/alloc.c:2680
> 2680 cons_free_list = *(struct Lisp_Cons **)&cons_free_list->cdr;
> (gdb) bt
> #0 Fcons (car=22960485, cdr=9613345)
> at /home/dept/ste/src/links/emacs/cvs-HEAD/emacs/src/alloc.c:2680
[...]
> (gdb) xbacktrace
> "mapcar"
> "easy-menu-create-menu"
> "byte-code"
> "recentf-update-menu"
> "run-hooks"
> (gdb)
> --8<---------------cut here---------------end--------------->8---
It seems to me that this SEGV is similar to the one reported by
Juri Linkov ("SIGSEGV on cons_free_list in alloc.c") today[1].
Here is some additional information from gdb (I'm not familiar with
debugging Emacs, so I just tried to enter the same commands Juri did):
--8<---------------cut here---------------start------------->8---
(gdb) p cons_free_list
$1 = (struct Lisp_Cons *) 0x2100000000006dbb
(gdb) p *cons_free_list
Cannot access memory at address 0x2100000000006dbb
(gdb) info local
val = 2377900603251649979
(gdb) p val
$2 = 2377900603251649979
(gdb) xtype
Lisp_String
(gdb) xsymbol
$3 = (struct Lisp_Symbol *) 0x2100000000006db8
Cannot access memory at address 0x2100000000006dc0
(gdb) xstring
Argument to arithmetic operation not a number or boolean.
--8<---------------cut here---------------end--------------->8---
Bye, Reiner.
[1] See http://thread.gmane.org/address@hidden
--
,,,
(o o)
---ooO-(_)-Ooo--- | PGP key available | http://rsteib.home.pages.de/