GNU bug report logs - #11677
24.1.50; Segfault in delete-other-windows on the current trunk

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Package: emacs;

Reported by: Lars Magne Ingebrigtsen <larsi <at> gnus.org>

Date: Mon, 11 Jun 2012 22:53:02 UTC

Severity: normal

Merged with 11717

Found in version 24.1.50

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#11677; Package emacs. (Mon, 11 Jun 2012 22:53:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Lars Magne Ingebrigtsen <larsi <at> gnus.org>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 11 Jun 2012 22:53:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.1.50; Segfault in delete-other-windows on the current trunk
Date: Tue, 12 Jun 2012 00:49:38 +0200

When running Emacs in batch mode (i.e. "make check" in Gnus), I'm now
getting segfaults.  This started happening today.

It's totally reproducible.

If the backtrace doesn't reveal immediately what the problem is, I can
do a non-optimised Emacs build.

Hm...  I just tried the same with Emacs 24.1, and it segfaults the same
way, so it's not a change that's happened to Emacs today, but rather a
Gnus code change that's tickling this bug.

Program received signal SIGSEGV, Segmentation fault.
0x000000000046b0ec in Fdelete_other_windows_internal (window=11995861, 
    root=15346021) at window.c:2649
2649      hlinfo = MOUSE_HL_INFO (f);
(gdb) bt
#0  0x000000000046b0ec in Fdelete_other_windows_internal (window=11995861, 
    root=15346021) at window.c:2649
#1  0x000000000056c6ea in Ffuncall (nargs=<value optimized out>, 
    args=<value optimized out>) at eval.c:3005
#2  0x00000000005a6bf5 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 
    args_template=<value optimized out>, nargs=0, args=0x0) at bytecode.c:785
#3  0x000000000056e99c in eval_sub (form=<value optimized out>) at eval.c:2356
#4  0x000000000056ffd8 in internal_catch (tag=<value optimized out>,
    func=<value optimized out>, arg=<value optimized out>) at eval.c:1272
#5  0x00000000005a62b0 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 
    args_template=<value optimized out>, nargs=0, args=0x0) at bytecode.c:966
#6  0x000000000056ef58 in funcall_lambda (fun=8890901, 
    nargs=<value optimized out>, arg_vector=<value optimized out>)
    at eval.c:3233
#7  0x000000000056c52b in Ffuncall (nargs=<value optimized out>, args=0x87aa10)
    at eval.c:3063
#8  0x00000000005a6bf5 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 
    args_template=<value optimized out>, nargs=0, args=0x0) at bytecode.c:785
#9  0x000000000056ef58 in funcall_lambda (fun=20103093, 
    nargs=<value optimized out>, arg_vector=<value optimized out>)
    at eval.c:3233
#10 0x000000000056c52b in Ffuncall (nargs=<value optimized out>, 
    args=0x132bfb0) at eval.c:3063
#11 0x00000000005a6bf5 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 
    args_template=<value optimized out>, nargs=0, args=0x0) at bytecode.c:785
#12 0x000000000056ef58 in funcall_lambda (fun=22169781, 
    nargs=<value optimized out>, arg_vector=<value optimized out>)
    at eval.c:3233
#13 0x000000000056c52b in Ffuncall (nargs=<value optimized out>, 
    args=0x15248b0) at eval.c:3063
#14 0x00000000005a6bf5 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 
    args_template=<value optimized out>, nargs=0, args=0x0) at bytecode.c:785
#15 0x000000000056ef58 in funcall_lambda (fun=22164277, 
    nargs=<value optimized out>, arg_vector=<value optimized out>)
    at eval.c:3233
#16 0x000000000056c52b in Ffuncall (nargs=<value optimized out>, 
    args=0x1523330) at eval.c:3063
etc
    

In GNU Emacs 24.1.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2012-06-11 on stories
Bzr revision: 108563 monnier <at> iro.umontreal.ca-20120611204733-zudy4qhm3c1z0lzu
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
  value of $LANG: en_US
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  diff-auto-refine-mode: t
  gnus-topic-mode: t
  gnus-undo-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
M-x m <return> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <up> <up> <up> <up> <up> 
<down> M-: M-p H-o C-x C-f g n u s - <M-backspace> 
l i s <tab> t e s <tab> <return> <down> <up> <return> 
M-> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <right> <right> <up> <right> <right> C-SPC C-e 
M-w H-o <up> <down> M-: C-y <return> Q . <return> <return> 
q l s g C-x b <right> <return> C-x v = C-x o C-x v 
y C-x v u y <switch-frame> H-o C-x 1 C-x C-f <M-backspace> 
C h <tab> <return> C-s C-g C-x C-f M a <tab> <return> 
C-s c h a <up> C-s t e s t <down> <down> <down> <down> 
<down> <down> <down> <switch-frame> <switch-frame> 
<down> <right> g d b SPC 0 <backspace> - e x SPC r 
u n SPC C-x C-s <switch-frame> <switch-frame> <switch-frame> 
<switch-frame> <switch-frame> <switch-frame> - - a 
r g s SPC C-x C-s H-o M-x r e p o <tab> r <tab> <r
eturn>

Recent messages:
Finding changes in /home/larsi/mgnus/lisp/tests/gnustest-nntp.el...
Discard changes in /home/larsi/mgnus/lisp/tests/gnustest-nntp.el? (y or n)  y
Reverting /home/larsi/mgnus/lisp/tests/gnustest-nntp.el...done
Quit
Mark saved where search started [2 times]
Saving file /home/larsi/mgnus/lisp/Makefile...
Wrote /home/larsi/mgnus/lisp/Makefile
Saving file /home/larsi/mgnus/lisp/Makefile...
Wrote /home/larsi/mgnus/lisp/Makefile
Making completion list...

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/home/larsi/mgnus/lisp/gnus-range hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-range
/home/larsi/mgnus/lisp/gnus-util hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-util
/home/larsi/mgnus/lisp/legacy-gnus-agent hides /home/larsi/src/emacs/trunk/lisp/gnus/legacy-gnus-agent
/home/larsi/mgnus/lisp/gnus-cus hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-cus
/home/larsi/mgnus/lisp/shr hides /home/larsi/src/emacs/trunk/lisp/gnus/shr
/home/larsi/mgnus/lisp/gnus-art hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-art
/home/larsi/mgnus/lisp/nnheader hides /home/larsi/src/emacs/trunk/lisp/gnus/nnheader
/home/larsi/mgnus/lisp/nnnil hides /home/larsi/src/emacs/trunk/lisp/gnus/nnnil
/home/larsi/mgnus/lisp/mm-url hides /home/larsi/src/emacs/trunk/lisp/gnus/mm-url
/home/larsi/mgnus/lisp/gnus-spec hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-spec
/home/larsi/mgnus/lisp/auth-source hides /home/larsi/src/emacs/trunk/lisp/gnus/auth-source
/home/larsi/mgnus/lisp/nnspool hides /home/larsi/src/emacs/trunk/lisp/gnus/nnspool
/home/larsi/mgnus/lisp/canlock hides /home/larsi/src/emacs/trunk/lisp/gnus/canlock
/home/larsi/mgnus/lisp/rfc1843 hides /home/larsi/src/emacs/trunk/lisp/gnus/rfc1843
/home/larsi/mgnus/lisp/rfc2104 hides /home/larsi/src/emacs/trunk/lisp/gnus/rfc2104
/home/larsi/mgnus/lisp/gnus-delay hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-delay
/home/larsi/mgnus/lisp/nnbabyl hides /home/larsi/src/emacs/trunk/lisp/gnus/nnbabyl
/home/larsi/mgnus/lisp/flow-fill hides /home/larsi/src/emacs/trunk/lisp/gnus/flow-fill
/home/larsi/mgnus/lisp/rfc2231 hides /home/larsi/src/emacs/trunk/lisp/gnus/rfc2231
/home/larsi/mgnus/lisp/gravatar hides /home/larsi/src/emacs/trunk/lisp/gnus/gravatar
/home/larsi/mgnus/lisp/nnregistry hides /home/larsi/src/emacs/trunk/lisp/gnus/nnregistry
/home/larsi/mgnus/lisp/ietf-drums hides /home/larsi/src/emacs/trunk/lisp/gnus/ietf-drums
/home/larsi/mgnus/lisp/qp hides /home/larsi/src/emacs/trunk/lisp/gnus/qp
/home/larsi/mgnus/lisp/gnus-diary hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-diary
/home/larsi/mgnus/lisp/gnus-bcklg hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-bcklg
/home/larsi/mgnus/lisp/nnweb hides /home/larsi/src/emacs/trunk/lisp/gnus/nnweb
/home/larsi/mgnus/lisp/mml hides /home/larsi/src/emacs/trunk/lisp/gnus/mml
/home/larsi/mgnus/lisp/message hides /home/larsi/src/emacs/trunk/lisp/gnus/message
/home/larsi/mgnus/lisp/spam-stat hides /home/larsi/src/emacs/trunk/lisp/gnus/spam-stat
/home/larsi/mgnus/lisp/nnir hides /home/larsi/src/emacs/trunk/lisp/gnus/nnir
/home/larsi/mgnus/lisp/gnus-group hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-group
/home/larsi/mgnus/lisp/mail-source hides /home/larsi/src/emacs/trunk/lisp/gnus/mail-source
/home/larsi/mgnus/lisp/parse-time hides /home/larsi/src/emacs/trunk/lisp/calendar/parse-time
/home/larsi/mgnus/lisp/time-date hides /home/larsi/src/emacs/trunk/lisp/calendar/time-date

Features:
(shadow ecomplete emacsbug sendmail help-mode view make-mode
multi-isearch diff-mode vc ediff-merg ediff-diff ediff-wind ediff-help
ediff-util ediff-mult ediff-init ediff vc-dispatcher copyright vc-cvs
sort qp shr browse-url gnus-async gnus-dup gnus-ml gmane spam-gmane dns
mm-url disp-table vc-git gnus-fun gnus-mdrtn gnus-topic pop3 nndoc
nnmbox nndraft utf-7 nnimap utf7 nnmh nnml nnfolder parse-time netrc
gnutls network-stream starttls nnir spam-report spam spam-stat gnus-uu
yenc gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg
gnus-art mm-uu mml2015 epg-config mm-view mml-smime smime dig nntp
gnus-cache gnus-sum nnoo gnus-group gnus-undo nnmail mail-source
gnus-start gnus-spec gnus-int gnus-range message format-spec rfc822 mml
easymenu mml-sec mailabbrev gmm-utils mailheader gnus-win gnus-load gnus
gnus-ems gnus-compat nnheader mail-utils wid-edit debug uniquify advice
help-fns advice-preload debbugs-gnu easy-mmode derived debbugs
soap-client mm-decode mm-bodies mm-encode url-http tls url-auth
mail-parse rfc2231 rfc2047 rfc2045 ietf-drums url-gw url url-proxy
url-privacy url-expand url-methods url-history url-cookie url-domsuf
url-util url-parse auth-source eieio byte-opt bytecomp byte-compile
cconv gnus-util mm-util mail-prsvr password-cache url-vars mailcap
warnings xml cl-macs ido flyspell ispell dired add-log mail-extr
jka-compr cl macroexp cl-lib time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
make-network-process dynamic-setting font-render-setting move-toolbar
gtk x-toolkit x multi-tty emacs)

-- 
(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#11677; Package emacs. (Tue, 12 Jun 2012 02:58:02 GMT) Full text and rfc822 format available.

Message #8 received at 11677 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
Cc: 11677 <at> debbugs.gnu.org
Subject: Re: bug#11677: 24.1.50;
	Segfault in delete-other-windows on the current trunk
Date: Tue, 12 Jun 2012 05:54:12 +0300

> From: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
> Date: Tue, 12 Jun 2012 00:49:38 +0200
> MailScanner-NULL-Check: 1340059778.9007 <at> 2uKdo4fQ4rEzyKCQA3Ok1Q
> 
> When running Emacs in batch mode (i.e. "make check" in Gnus), I'm now
> getting segfaults.  This started happening today.
> 
> It's totally reproducible.

Can it be reproduced with something simpler than "make check" in Gnus?
E.g., can you show the Lisp code of the function where this crash
happens?  "xbacktrace" would be useful.

> If the backtrace doesn't reveal immediately what the problem is, I can
> do a non-optimised Emacs build.

Please do.  I don't trust backtraces from optimized builds enough to
invest any time in studying them.

> Program received signal SIGSEGV, Segmentation fault.
> 0x000000000046b0ec in Fdelete_other_windows_internal (window=11995861, 
>     root=15346021) at window.c:2649
> 2649      hlinfo = MOUSE_HL_INFO (f);

What is f in this frame, and can you see which part of the
MOUSE_HL_INFO macro causes the crash?
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#11677; Package emacs. (Fri, 15 Jun 2012 20:37:01 GMT) Full text and rfc822 format available.

Message #11 received at 11677 <at> debbugs.gnu.org (full text, mbox):

From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Lars Magne Ingebrigtsen <larsi <at> gnus.org>, 11677 <at> debbugs.gnu.org
Subject: Re: bug#11677: 24.1.50;
	Segfault in delete-other-windows on the current trunk
Date: Fri, 15 Jun 2012 22:33:16 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> Can it be reproduced with something simpler than "make check" in Gnus?

$ emacs -batch --eval '(progn (split-window-vertically) (delete-other-windows))'
Fatal error (11)

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
Merged 11677 11717. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Sat, 16 Jun 2012 02:30:02 GMT) Full text and rfc822 format available.
Reply sent to Eli Zaretskii <eliz <at> gnu.org>:
You have taken responsibility. (Sat, 16 Jun 2012 07:25:02 GMT) Full text and rfc822 format available.
Notification sent to Lars Magne Ingebrigtsen <larsi <at> gnus.org>:
bug acknowledged by developer. (Sat, 16 Jun 2012 07:25:03 GMT) Full text and rfc822 format available.

Message #18 received at 11677-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Andreas Schwab <schwab <at> linux-m68k.org>
Cc: larsi <at> gnus.org, 11677-done <at> debbugs.gnu.org
Subject: Re: bug#11677: 24.1.50;
	Segfault in delete-other-windows on the current trunk
Date: Sat, 16 Jun 2012 10:20:45 +0300

> From: Andreas Schwab <schwab <at> linux-m68k.org>
> Cc: Lars Magne Ingebrigtsen <larsi <at> gnus.org>,  11677 <at> debbugs.gnu.org
> Date: Fri, 15 Jun 2012 22:33:16 +0200
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > Can it be reproduced with something simpler than "make check" in Gnus?
> 
> $ emacs -batch --eval '(progn (split-window-vertically) (delete-other-windows))'
> Fatal error (11)

Thanks.  I fixed this (and another similar bug) in revision 108619 on
the trunk.
Reply sent to Eli Zaretskii <eliz <at> gnu.org>:
You have taken responsibility. (Sat, 16 Jun 2012 07:25:03 GMT) Full text and rfc822 format available.
Notification sent to David Engster <deng <at> randomsample.de>:
bug acknowledged by developer. (Sat, 16 Jun 2012 07:25:03 GMT) Full text and rfc822 format available.

Message #24 received at 11677-done <at> debbugs.gnu.org (full text, mbox):

From: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Andreas Schwab <schwab <at> linux-m68k.org>, 11677-done <at> debbugs.gnu.org
Subject: Re: bug#11677: 24.1.50;
	Segfault in delete-other-windows on the current trunk
Date: Wed, 20 Jun 2012 19:21:29 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> Thanks.  I fixed this (and another similar bug) in revision 108619 on
> the trunk.

Thanks!

-- 
(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Thu, 19 Jul 2012 11:24:05 GMT) Full text and rfc822 format available.
This bug report was last modified 11 years and 277 days ago.

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