bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Christoph Groth]

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I'm using Emacs as shipped in Debian testing.  Since some weeks or 
perhaps months I started to observe occasional random freezes. 
Finally I managed to find a way to reproduce the freeze: I open a 
certain aricle in Gnus, and scroll up and down with the mouse 
wheel for some time.  Eventually Emacs freezes.

This problem is present in both Emacs 24 and 25 from Debian 
testing.  In order to provide a meaningful backtrace, I rebuilt 
the emacs25 source package (from Debian testing) without 
optimizations and attach the full log of a gdb session (done with 
/usr/bin/script).  I hope that this will allow someone to identify 
and fix the problem.  Please let me know if I can be of any 
further help.

Christoph


In GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
 of 2017-05-03, modified by Debian built on neron
Windowing system distributor 'The X.Org Foundation', version 
11.0.11902000
System Description:	Debian GNU/Linux 9.0 (stretch)

Configured using:
 'configure --build x86_64-linux-gnu --prefix=/usr 
 --sharedstatedir=/var/lib --libexecdir=/usr/lib 
 --localstatedir=/var/lib --infodir=/usr/share/info 
 --mandir=/usr/share/man --with-pop=yes 
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp 
 --with-sound=alsa --build x86_64-linux-gnu --prefix=/usr 
 --sharedstatedir=/var/lib --libexecdir=/usr/lib 
 --localstatedir=/var/lib --infodir=/usr/share/info 
 --mandir=/usr/share/man --with-pop=yes 
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp 
 --with-sound=alsa --with-x=yes --with-x-toolkit=gtk3 
 --with-toolkit-scroll-bars 'CFLAGS=-g -O0 
 -fdebug-prefix-map=/tmp/emacs25-25.1+1=. -fstack-protector-strong 
 -Wformat -Werror=format-security -Wall' CPPFLAGS=-Wdate-time 
 LDFLAGS=-Wl,-z,relro'
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF 
GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT 
LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11
Important settings:
  value of $LC_COLLATE: C
  value of $LC_MESSAGES: en_US.UTF-8
  value of $LC_MONETARY: en_IE.UTF-8
  value of $LC_NUMERIC: C
  value of $LANG: en_DK.utf8
  locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
  jabber-activity-mode: t
  jabber-mode-line-mode: t
  TeX-PDF-mode: t
  TeX-source-correlate-mode: t
  diff-auto-refine-mode: t
  global-whitespace-mode: t
  icomplete-mode: t
  shell-dirtrack-mode: t
  auto-insert-mode: t
  global-subword-mode: t
  subword-mode: t
  electric-pair-mode: t
  show-paren-mode: t
  winner-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent messages:
Created bibtex link.
Problems while trying to load feature ‘org-jsinfo’
Problems while trying to load feature ‘org-mew’
Problems while trying to load feature ‘org-vm’
Problems while trying to load feature ‘org-wl’
For information about GNU Emacs and the GNU system, type C-h C-a.
Tramp persistency file ‘/home/cwg/.emacs.d/tramp’ is corrupted: 
Args out of range: ["ftp" "cweb33" "falma.de" nil], 4
Mark set [2 times]
Mark saved where search started
Mark set

Load-path shadows:
~/local/lib/emacs/org-bibtex hides 
/usr/share/emacs25/site-lisp/org-mode/org-bibtex
/usr/share/emacs/25.1/site-lisp/debian-startup hides 
/usr/share/emacs/site-lisp/debian-startup
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/usr/share/emacs25/site-lisp/org-mode/ob-ledger hides 
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/usr/share/emacs25/site-lisp/org-mode/org-archive hides 
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/usr/share/emacs/25.1/lisp/org/ob-eval
/usr/share/emacs25/site-lisp/org-mode/org-mouse hides 
/usr/share/emacs/25.1/lisp/org/org-mouse
/usr/share/emacs25/site-lisp/org-mode/ob-plantuml hides 
/usr/share/emacs/25.1/lisp/org/ob-plantuml
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/usr/share/emacs25/site-lisp/org-mode/org-compat hides 
/usr/share/emacs/25.1/lisp/org/org-compat
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Features:
(shadow sort face-remap footnote mail-extr gnus-msg gnus-art mm-uu 
mml2015 mm-view mml-smime smime dig gnus-sum gnus-group gnus-undo 
gnus-start gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo 
parse-time gnus-spec gnus-int gnus-range gnus-win gnus gnus-ems 
nnheader emacsbug message rfc822 mml mml-sec epg mm-decode 
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils 
mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils misearch 
multi-isearch tramp-cache minibuffer-complete-cycle org-w3m 
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indian cyrillic chinese charscript case-table epa-hook 
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hashtable-print-readable backquote dbusbind inotify 
dynamic-setting system-font-setting font-render-setting 
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 400257 9669)
 (symbols 48 42477 0)
 (miscs 40 206 207)
 (strings 32 90631 16071)
 (string-bytes 1 2912088)
 (vectors 16 59498)
 (vector-slots 8 951236 1605)
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[-- Attachment #2: log --]
[-- Type: application/octet-stream, Size: 163046 bytes --]

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: Christoph Groth <christoph@grothesque.org>
> Date: Wed, 03 May 2017 14:02:17 +0200
> 
> I'm using Emacs as shipped in Debian testing.  Since some weeks or 
> perhaps months I started to observe occasional random freezes. 
> Finally I managed to find a way to reproduce the freeze: I open a 
> certain aricle in Gnus, and scroll up and down with the mouse 
> wheel for some time.  Eventually Emacs freezes.
> 
> This problem is present in both Emacs 24 and 25 from Debian 
> testing.  In order to provide a meaningful backtrace, I rebuilt 
> the emacs25 source package (from Debian testing) without 
> optimizations and attach the full log of a gdb session (done with 
> /usr/bin/script).  I hope that this will allow someone to identify 
> and fix the problem.  Please let me know if I can be of any 
> further help.

is this Emacs binary built with ralloc.c?  Do you see ralloc.o in the
src directory?

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Christoph Groth]

Eli Zaretskii wrote:

> is this Emacs binary built with ralloc.c?  Do you see ralloc.o 
> in the
> src directory?

There are 86 object files in the src directory, but ralloc.o is 
not amongst them.

I don't mind building Emacs in other ways, as long as it's 
reasonably straightforward.  Unfortunately providing an 'emacs -Q' 
way to reproduce the bug could be tough, since I can only trigger 
it in Gnus so far, so this may depend heavily on my Emacs config.

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: Christoph Groth <christoph@grothesque.org>
> Cc: 26761@debbugs.gnu.org
> Date: Wed, 03 May 2017 18:33:09 +0200
> 
> Eli Zaretskii wrote:
> 
> > is this Emacs binary built with ralloc.c?  Do you see ralloc.o 
> > in the
> > src directory?
> 
> There are 86 object files in the src directory, but ralloc.o is 
> not amongst them.

OK, so that's one suspect down.

Is it feasible for you to try Emacs 25.2 or (a snapshot of) the master
branch of the development code?  I think it's important for us to know
whether this problem is present in the latest codebase, before we
start digging further.

Thanks.

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Christoph Groth]

I compiled Emacs from current git.  Unfortunately, the only way 
that I know to reproduce the freeze is when viewing a particular 
message with Gnus.  That's why I need to run Emacs with my full 
configuration.

When I start the newly compiled Emacs, it complains about the use 
of "some" in my init.el:
Symbol's function definition is void: some

So I comment-out this bit since it's not relevant.

Then, when I try to launch Gnus, it complains about my ~/.gnus:

gnus-read-init-file: Error in ~/.gnus: (lambda (name &optional 
lists &optional extra-split-methods-before &optional 
extra-split-methods-after &optional extra-vars) (append (list 
(quote nnimap) name (quote (nnimap-stream shell)) (quote 
(nnimap-unsplittable-articles (%Deleted))) (list (quote 
nnimap-shell-program) (format my-nnimap-shell-program name)) (list 
(quote nnimap-split-methods) (append extra-split-methods-before 
(mapcar (function (lambda (name) (list name (format ^list-id: 
.*<%s\. name)))) lists) extra-split-methods-after))) extra-vars))

This is probably related to the following code in my ~/.gnus:

(defun my-nnimap-configure (name
                            &optional lists
                            &optional extra-split-methods-before
                            &optional extra-split-methods-after
                            &optional extra-vars)
  (append
   `(nnimap ,name
            (nnimap-stream shell)
            (nnimap-unsplittable-articles (%Deleted))
            (nnimap-shell-program ,(format my-nnimap-shell-program 
            name))
            (nnimap-split-methods
             ,(append extra-split-methods-before
                      (mapcar
                       (lambda (name)
                         (list name (format "^list-id: .*<%s\\." 
                         name)))
                       lists)
                      extra-split-methods-after)))
   extra-vars))

(setq gnus-secondary-select-methods
      (list (my-nnimap-configure
             "aaa"
             '("list1" "list2"
               "list3" "list4"
               "list5" "list6"
               "list7" "list8")
             '(("something" "^From: .*@something.org")
               ("other-thing" "^Subject: .*other.*thing"))
             my-nnimap-final-split-methods
             '((nnimap-inbox ("INBOX" "Sent"))))
            (my-nnimap-configure
             "bbb"
             '("list9")
             nil
             (append
              '(("mangled-own" my-mangled-own-p))
              my-nnimap-final-split-methods)
             '((nnimap-inbox ("INBOX" "Sent Items"))))
            (my-nnimap-configure "old")))

I wrote the function my-nnimap-configure to simplify the creation 
of the gnus-secondary-select-methods variable.  It works with 
emacs 24 and 25 as found in Debian.  I do not know what's the 
problem with it when used with bleeding-edge Emacs.

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Noam Postavsky]

On Thu, May 4, 2017 at 4:56 AM, Christoph Groth
<christoph@grothesque.org> wrote:
>
> When I start the newly compiled Emacs, it complains about the use of "some"
> in my init.el:
> Symbol's function definition is void: some

You need to (require 'cl) to use some (possibly in earlier Emacs some
other thing you load happens to (require 'cl) so it seems to work
without that).
Better would be to (require 'cl-lib) and use cl-some.

>
> (defun my-nnimap-configure (name
>                            &optional lists
>                            &optional extra-split-methods-before
>                            &optional extra-split-methods-after
>                            &optional extra-vars)

There should be only one &optional in a lambda list, Emacs 26 got more
strict about this. The correct definition would be

    (defun my-nnimap-configure (name
                                &optional lists
                                extra-split-methods-before
                                extra-split-methods-after
                                extra-vars)

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[npostavs]

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From: Christoph Groth <christoph@grothesque.org>
To: Noam Postavsky <npostavs@users.sourceforge.net>
Subject: Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel
Date: Thu, 04 May 2017 14:40:56 +0200
Message-ID: <87pofosskn.fsf@grothesque.org>

Thanks, Noam, that worked.  I can now confirm that the problem 
does not show up with bleeding-edge Emacs.  I double-checked that 
I continue to see it with the other builds.

So it seems that either the problem got fixed, or it is a problem 
that is introduced through Debian packaging.  In order to find out 
who is the culprit I checked out the tag emacs-24.5 from git and 
tried to compile, but there's a problem.  Running "./autoconf.sh" 
gives:

./autogen.sh           
Checking whether you have the necessary tools...
(Read INSTALL.REPO for more details on building Emacs)

Checking for autoconf (need at least version 2.65)...
ok
Checking for automake (need at least version 1.11)...
ok
Your system has the required tools.
Running 'autoreconf -fi -I m4' ...
/usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
No such file or directory
/usr/bin/m4:aclocal.m4:27: cannot open `m4/flexmember.m4': No such 
file or directory
/usr/bin/m4:aclocal.m4:43: cannot open `m4/limits-h.m4': No such 
file or directory
/usr/bin/m4:aclocal.m4:44: cannot open `m4/localtime-buffer.m4': 
No such file or directory
/usr/bin/m4:aclocal.m4:72: cannot open `m4/std-gnu11.m4': No such 
file or directory
autom4te: /usr/bin/m4 failed with exit status: 1
/usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
No such file or directory
/usr/bin/m4:aclocal.m4:27: cannot open `m4/flexmember.m4': No such 
file or directory
/usr/bin/m4:aclocal.m4:43: cannot open `m4/limits-h.m4': No such 
file or directory
/usr/bin/m4:aclocal.m4:44: cannot open `m4/localtime-buffer.m4': 
No such file or directory
/usr/bin/m4:aclocal.m4:72: cannot open `m4/std-gnu11.m4': No such 
file or directory
autom4te: /usr/bin/m4 failed with exit status: 1
autoreconf: /usr/bin/autoconf failed with exit status: 1

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[npostavs]

> From: Christoph Groth <christoph@grothesque.org>

> So it seems that either the problem got fixed, or it is a problem 
> that is introduced through Debian packaging.  In order to find out 
> who is the culprit I checked out the tag emacs-24.5 from git and 
> tried to compile, but there's a problem.  Running "./autoconf.sh" 
> gives:

Is "./autoconf.sh" a typo for "./autogen.sh"?

> Running 'autoreconf -fi -I m4' ...
> /usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
> No such file or directory

Try deleting 'aclocal.m4' first.

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: npostavs@users.sourceforge.net
> Date: Thu, 04 May 2017 18:28:15 -0400
> 
> Thanks, Noam, that worked.  I can now confirm that the problem 
> does not show up with bleeding-edge Emacs.  I double-checked that 
> I continue to see it with the other builds.

Thanks, this is important information.

> So it seems that either the problem got fixed, or it is a problem 
> that is introduced through Debian packaging.  In order to find out 
> who is the culprit I checked out the tag emacs-24.5 from git and 
> tried to compile, but there's a problem.  Running "./autoconf.sh" 
> gives:
> 
> ./autogen.sh           
> Checking whether you have the necessary tools...
> (Read INSTALL.REPO for more details on building Emacs)
> 
> Checking for autoconf (need at least version 2.65)...
> ok
> Checking for automake (need at least version 1.11)...
> ok
> Your system has the required tools.
> Running 'autoreconf -fi -I m4' ...
> /usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
> No such file or directory
> /usr/bin/m4:aclocal.m4:27: cannot open `m4/flexmember.m4': No such 
> file or directory
> /usr/bin/m4:aclocal.m4:43: cannot open `m4/limits-h.m4': No such 
> file or directory
> /usr/bin/m4:aclocal.m4:44: cannot open `m4/localtime-buffer.m4': 
> No such file or directory
> /usr/bin/m4:aclocal.m4:72: cannot open `m4/std-gnu11.m4': No such 
> file or directory
> autom4te: /usr/bin/m4 failed with exit status: 1
> /usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
> No such file or directory
> /usr/bin/m4:aclocal.m4:27: cannot open `m4/flexmember.m4': No such 
> file or directory
> /usr/bin/m4:aclocal.m4:43: cannot open `m4/limits-h.m4': No such 
> file or directory
> /usr/bin/m4:aclocal.m4:44: cannot open `m4/localtime-buffer.m4': 
> No such file or directory
> /usr/bin/m4:aclocal.m4:72: cannot open `m4/std-gnu11.m4': No such 
> file or directory
> autom4te: /usr/bin/m4 failed with exit status: 1
> autoreconf: /usr/bin/autoconf failed with exit status: 1

You should be better off building Emacs 24.5 from the source tarball
available from the GNU FTP site and its mirrors.  There, the
autogen.sh script was already run and its products are in the tarball,
so you can start from running the configure script.

Thanks.

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Christoph Groth]

When I try to compile emacs-25.1 (from the official tarball), make 
fails with:

Dumping under the name emacs
Makefile:736: recipe for target 'bootstrap-emacs' failed
make[1]: *** [bootstrap-emacs] Segmentation fault
make[1]: Leaving directory '/home/cwg/emacs-debug/emacs-25.1/src'
Makefile:398: recipe for target 'src' failed
make: *** [src] Error 2

Strange, isn't it?

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[npostavs]

Christoph Groth <christoph@grothesque.org> writes:

> When I try to compile emacs-25.1 (from the official tarball), make
> fails with:
>
> Dumping under the name emacs
> Makefile:736: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Segmentation fault
> make[1]: Leaving directory '/home/cwg/emacs-debug/emacs-25.1/src'
> Makefile:398: recipe for target 'src' failed
> make: *** [src] Error 2
>
> Strange, isn't it?

That's probably Bug#24358, add REL_ALLOC=no to your ./configure call (I
believe the Debian packages already do this).

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: Christoph Groth <christoph@grothesque.org>
> Cc: npostavs@users.sourceforge.net,  26761@debbugs.gnu.org
> Date: Sat, 06 May 2017 19:43:25 +0200
> 
> When I try to compile emacs-25.1 (from the official tarball), make 
> fails with:
> 
> Dumping under the name emacs
> Makefile:736: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Segmentation fault
> make[1]: Leaving directory '/home/cwg/emacs-debug/emacs-25.1/src'
> Makefile:398: recipe for target 'src' failed
> make: *** [src] Error 2
> 
> Strange, isn't it?

Do you see ralloc.o in the src directory?

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Christoph Groth]

> Do you see ralloc.o in the src directory?

Yes, I do.  However, when I unpack a fresh tarball, and configure 
with REL_ALLOC=no, as suggested by npostavs, no ralloc.o is 
created.  But it still doesn't work, make still fails with

Dumping under the name emacs
Makefile:736: recipe for target 'bootstrap-emacs' failed
make[1]: *** [bootstrap-emacs] Segmentation fault
make[1]: Leaving directory '/home/cwg/emacs-debug/emacs-25.1/src'
Makefile:398: recipe for target 'src' failed
make: *** [src] Error 2

bug#26761: [Christoph Groth] Re: bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: Christoph Groth <christoph@grothesque.org>
> Cc: npostavs@users.sourceforge.net,  26761@debbugs.gnu.org
> Date: Sun, 07 May 2017 00:53:37 +0200
> 
> > Do you see ralloc.o in the src directory?
> 
> Yes, I do.  However, when I unpack a fresh tarball, and configure 
> with REL_ALLOC=no, as suggested by npostavs, no ralloc.o is 
> created.  But it still doesn't work, make still fails with
> 
> Dumping under the name emacs
> Makefile:736: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Segmentation fault

Can you run the faulting command under GDB and show the C backtrace
when it segfaults?  This could be one of the known issues for which we
already have solutions, but I cannot tell more given the above
information.

Thanks.

bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Glenn Morris]

Version: 26.1

> Thanks, Noam, that worked.  I can now confirm that the problem 
> does not show up with bleeding-edge Emacs.

Thanks. Hence closing the report.

> I double-checked that I continue to see it with the other builds.
>
> So it seems that either the problem got fixed, or it is a problem 
> that is introduced through Debian packaging.  In order to find out 
> who is the culprit I checked out the tag emacs-24.5 from git and 
> tried to compile, but there's a problem.

Debian adds very few changes, and none of them seem likely to be
relevant to this, so I suspect this isn't going to be a productive use
of time.

The Emacs build tree won't react well if you switch in-place between
massively separated git versions. You should do eg a make
maintainer-clean first. Or clone a fresh git directory off the first
one each time.