Debian Bug report logs - #475199
w3m: searching without migemo causes segfault

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@debian.at>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: w3m segfaults after searching in options

Date: Wed, 9 Apr 2008 18:16:48 +0200

[Message part 1 (text/plain, inline)]

Package: w3m
Version: 0.5.1-5.1+b1
Severity: important

        Hi!

 I seem to have found a quite reproducible segfault (some other users
confirmed it to me on different architectures like amd64 and i386) so it
doesn't seem to be only powerpc:

 w3m https://db.debian.org/ (notice https, not http)
 o (for getting to the options)
 /ssl (searching for ssl)
 j (for going down a line)

 This is the recipe that made it possible for others to reproduce it.
Please notice that it doesn't seem to happen when one uses http://
instead of https:// and searching in the page itself doesn't trigger it
neither.

 Here some gdb backtrace:

#v+
Forward: ssl
Program received signal SIGPIPE, Broken pipe.
[Switching to Thread 0x48022ea0 (LWP 30959)]
0x0fb280a4 in write () from /lib/libc.so.6
(gdb) bt
#0  0x0fb280a4 in write () from /lib/libc.so.6
#1  0x0facb434 in _IO_file_write () from /lib/libc.so.6
#2  0x0facaf80 in ?? () from /lib/libc.so.6
#3  0x0facb3b4 in _IO_do_write () from /lib/libc.so.6
#4  0x0facbc78 in _IO_file_sync () from /lib/libc.so.6
#5  0x0fabbf9c in fflush () from /lib/libc.so.6
#6  0x1003730c in ?? ()
#7  0x10037964 in ?? ()
#8  0x1000c3e0 in ?? ()
#9  0x1000c788 in ?? ()
#10 0x1000493c in ?? ()
#11 0x100140d8 in ?? ()
#12 0x0fa6f720 in ?? () from /lib/libc.so.6
#13 0x0fa6f8e0 in __libc_start_main () from /lib/libc.so.6
#14 0x00000000 in ?? ()
(gdb) 
#v-

 Find also attached an strace -rf from one session. I waited a while
between the relevant keypresses (the enter after /ssl and before the j
and the segfault) so you can more easier find the place with the timing
informations in the strace output.

 If I can help in any way, pretty please let me know. I'm not sure if
this is related to #372171 somehow, though moving ~/.w3m away doesn't
gain me anything. #305879 sounds pretty much like this so it doesn't
seem to be fixed with 0.5.1-5.

 So long,
Rhonda

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: powerpc (ppc)

Kernel: Linux 2.6.24-1-powerpc
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages w3m depends on:
ii  libc6                  2.7-10            GNU C Library: Shared libraries
ii  libgc1c2               1:6.8-1.1         conservative garbage collector for
ii  libgpmg1               1.20.3~pre3-3     General Purpose Mouse - shared lib
ii  libncurses5            5.6+20080308-1    Shared libraries for terminal hand
ii  libssl0.9.8            0.9.8g-8          SSL shared libraries
ii  zlib1g                 1:1.2.3.3.dfsg-11 compression library - runtime

Versions of packages w3m recommends:
ii  ca-certificates             20070303-0.1 Common CA certificates

-- no debconf information

[w3m-segfault.strace.gz (application/octet-stream, attachment)]

Message #10 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@deb.at>

To: 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Mon, 28 Jul 2008 13:17:46 +0200

* Gerfried Fuchs <rhonda@debian.at> [2008-04-09 18:16:48 CEST]:
>  I seem to have found a quite reproducible segfault (some other users
> confirmed it to me on different architectures like amd64 and i386) so it
> doesn't seem to be only powerpc:
> 
>  w3m https://db.debian.org/ (notice https, not http)
>  o (for getting to the options)
>  /ssl (searching for ssl)
>  j (for going down a line)

 It's even worse, it seems to be somehow related to https pages ...

w3m https://nm.debian.org/nmlist.php
/blub
j
<segfault>

>  If I can help in any way, pretty please let me know.

 I haven't heard back from anyone, and the problem still holds. :(

 So long,
Rhonda

Message #15 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@deb.at>

To: 475199@bugs.debian.org

Cc: control@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Mon, 10 Nov 2008 11:52:36 +0100

retitle 475199 w3m segfaults after search in https mode
thanks

* Gerfried Fuchs <rhonda@deb.at> [2008-07-28 13:17:46 CEST]:
> * Gerfried Fuchs <rhonda@debian.at> [2008-04-09 18:16:48 CEST]:
> >  I seem to have found a quite reproducible segfault (some other users
> > confirmed it to me on different architectures like amd64 and i386) so it
> > doesn't seem to be only powerpc:
> 
>  It's even worse, it seems to be somehow related to https pages ...
> 
> w3m https://nm.debian.org/nmlist.php
> /blub
> j
> <segfault>

 Erm, still someone around? This makes it absolutely annoying and quite
unusable for https pages (like nagios setups) and searching in there.

 Pretty please, any response would be appreciated, I am here and willing
to provide more informations if only one tells me what's further needed
...

 So long,
Rhonda

Message #22 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Tatsuya Kinoshita <tats@debian.org>

To: rhonda@deb.at, 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Mon, 10 Nov 2008 21:10:27 +0900 (JST)

[Message part 1 (text/plain, inline)]

On November 10, 2008 at 11:52AM +0100,
rhonda (at deb.at) wrote:

> > w3m https://nm.debian.org/nmlist.php
> > /blub
> > j
> > <segfault>
>
>  Erm, still someone around? This makes it absolutely annoying and quite
> unusable for https pages (like nagios setups) and searching in there.
>
>  Pretty please, any response would be appreciated, I am here and willing
> to provide more informations if only one tells me what's further needed
> ...

Hmm, on my system (sid i386, updated yesterday), the above problem
doesn't occur, even though I remove ~/.w3m.  The search feature in
https page with w3m 0.5.2-2+b1 works for me.

Thanks,
--
Tatsuya Kinoshita

[Message part 2 (application/pgp-signature, inline)]

Message #27 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@deb.at>

To: Tatsuya Kinoshita <tats@debian.org>, 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Tue, 11 Nov 2008 17:53:58 +0100

* Tatsuya Kinoshita <tats@debian.org> [2008-11-10 13:10:27 CET]:
> On November 10, 2008 at 11:52AM +0100, rhonda (at deb.at) wrote:
> > > w3m https://nm.debian.org/nmlist.php
> > > /blub
> > > j
> > > <segfault>
> >
> >  Erm, still someone around? This makes it absolutely annoying and quite
> > unusable for https pages (like nagios setups) and searching in there.
> >
> >  Pretty please, any response would be appreciated, I am here and willing
> > to provide more informations if only one tells me what's further needed
> > ...
> 
> Hmm, on my system (sid i386, updated yesterday), the above problem
> doesn't occur, even though I remove ~/.w3m.  The search feature in
> https page with w3m 0.5.2-2+b1 works for me.

 Another way that worked relyable for me:

w3m 'https://db.debian.org/search.cgi?country=de&dosearch=Search...'
/joey
(twice return)
<segfault>

 Again, others were able to reproduce it. I've w3m-img running, but I
purged that package, moved my .w3m directory aside to start off with a
clean environment, it didn't change much ...  :(

 Yes, 0.5.2-2+b1 also here, current up2date lenny.
Rhonda

Message #32 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Tatsuya Kinoshita <tats@debian.org>

To: rhonda@deb.at, 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Wed, 12 Nov 2008 21:57:49 +0900 (JST)

[Message part 1 (text/plain, inline)]

On November 11, 2008 at 5:53PM +0100,
rhonda (at deb.at) wrote:

>  Another way that worked relyable for me:
>
> w3m 'https://db.debian.org/search.cgi?country=de&dosearch=Search...'
> /joey
> (twice return)
> <segfault>

Hmm, it also works on my system, with or without w3m-img, with or
without libc6-i686.  I have never seen a segfault with w3m 0.5.2.

--
Tatsuya Kinoshita

[Message part 2 (application/pgp-signature, inline)]

Message #35 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Carsten Hey <c.hey@web.de>

To: 475199@bugs.debian.org

Cc: rhonda@deb.at

Subject: w3m segfault

Date: Wed, 12 Nov 2008 14:20:45 +0100

Hi,

I did what was described in the bug reports first mail:

zsh: segmentation fault  w3m -no-mouse https://db.debian.org/
2:carsten@taz:~> dpkg -l w3m
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  w3m            0.5.2-2+b1     WWW browsable pager with excellent tables/fr
3:carsten@taz:~> dpkg -l w3m-img
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
pn  w3m-img        <none>         (no description available)
4:carsten@taz:~> dpkg -l w3m-ssl
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
un  w3m-ssl        <none>         (no description available)
5:carsten@taz:~> uname -a
Linux taz 2.6.18-6-686 #1 SMP Mon Oct 13 16:13:09 UTC 2008 i686 GNU/Linux
6:carsten@taz:~> cat .w3m/keymap 
keymap q EXIT
keymap j UP
keymap k DOWN
keymap h LEFT
keymap l RIGHT


Regards,
Carsten

Message #38 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Carsten Hey <c.hey@web.de>

To: 475199@bugs.debian.org

Cc: rhonda@deb.at

Subject: Re: w3m segfault

Date: Wed, 12 Nov 2008 14:25:57 +0100

Some German speaking people are able to reproduce this but Japanese
speaking people not? If yes then this could be helpful:

7:carsten@taz:~> locale
LANG=de_DE.UTF-8
LC_CTYPE="de_DE.UTF-8"
LC_NUMERIC=C
LC_TIME=C
LC_COLLATE=C
LC_MONETARY="de_DE.UTF-8"
LC_MESSAGES=C
LC_PAPER="de_DE.UTF-8"
LC_NAME="de_DE.UTF-8"
LC_ADDRESS="de_DE.UTF-8"
LC_TELEPHONE="de_DE.UTF-8"
LC_MEASUREMENT="de_DE.UTF-8"
LC_IDENTIFICATION="de_DE.UTF-8"
LC_ALL=

Message #43 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@deb.at>

To: Tatsuya Kinoshita <tats@debian.org>, 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Mon, 25 May 2009 09:54:01 +0200

	Hi!

* Tatsuya Kinoshita <tats@debian.org> [2008-11-12 13:57:49 CET]:
> On November 11, 2008 at 5:53PM +0100, rhonda (at deb.at) wrote:
> >  Another way that worked relyable for me:
> >
> > w3m 'https://db.debian.org/search.cgi?country=de&dosearch=Search...'
> > /joey
> > (twice return)
> > <segfault>
> 
> Hmm, it also works on my system, with or without w3m-img, with or
> without libc6-i686.  I have never seen a segfault with w3m 0.5.2.

 For a while running w3m in gdb did make the bug go away - now I managed
to receive a segfault from a w3m session within gdb and am able to offer
you a backtrace:

Forward: security
Program received signal SIGPIPE, Broken pipe.
[Switching to Thread 0x48022f10 (LWP 8330)]
0x0fb2f524 in __write_nocancel () from /lib/libc.so.6
(gdb) bt
#0  0x0fb2f524 in __write_nocancel () from /lib/libc.so.6
#1  0x0fad03a4 in _IO_new_file_write (f=0x10172a10, data=0x48250000, n=9) at fileops.c:1268
#2  0x0facfef0 in new_do_write (fp=0x10172a10, data=0x48250000 "security\n", to_do=9) at fileops.c:522
#3  0x0fad0324 in _IO_new_do_write (fp=<value optimized out>, data=<value optimized out>, to_do=9) at fileops.c:494
#4  0x0fad0be8 in _IO_new_file_sync (fp=<value optimized out>) at fileops.c:897
#5  0x0fac0d9c in _IO_fflush (fp=0x10172a10) at iofflush.c:43
#6  0x10038cb8 in ?? ()
#7  0x10039474 in ?? ()
#8  0x1000c374 in ?? ()
#9  0x1000c7a8 in ?? ()
#10 0x100141a8 in ?? ()
#11 0x0fa73ae4 in generic_start_main (main=0x10013390 <_init+60548>, argc=2, ubp_av=0xbf8f1454, auxvec=0xbf8f1518, init=0x10172a10, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=<value optimized out>) at ../csu/libc-start.c:222
#12 0x0fa73ca0 in __libc_start_main (argc=<value optimized out>, ubp_av=<value optimized out>, ubp_ev=<value optimized out>, auxvec=<value optimized out>, rtld_fini=<value optimized out>, stinfo=<value optimized out>, stack_on_entry=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/powerpc/libc-start.c:92
#13 0x00000000 in ?? ()
(gdb) 

 I hope this helps you a bit. If you have any further hint pretty please
let me know.

 So long!
Rhonda

Message #48 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Akos PASZTORY <akos.pasztory@gmail.com>

To: 475199@bugs.debian.org

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Mon, 6 Jul 2009 13:22:00 +0300

This problem causes pain for me too.  strace-ing w3m showed that it
wants to run some program called "migemo", and I don't have that.  So
i looked it up in the options (search for "migemo") and disabled it.
Guess what: the segfault disappeared.

hth,
-- 
akos

Message #53 received at 475199@bugs.debian.org (full text, mbox, reply):

From: Gerfried Fuchs <rhonda@deb.at>

To: Akos PASZTORY <akos.pasztory@gmail.com>, 475199@bugs.debian.org

Cc: Tatsuya Kinoshita <tats@debian.org>

Subject: Re: Bug#475199: w3m segfaults after searching in options

Date: Tue, 7 Jul 2009 11:33:46 +0200

	Hi!

* Akos PASZTORY <akos.pasztory@gmail.com> [2009-07-06 12:22:00 CEST]:
> This problem causes pain for me too.  strace-ing w3m showed that it
> wants to run some program called "migemo", and I don't have that.  So
> i looked it up in the options (search for "migemo") and disabled it.
> Guess what: the segfault disappeared.

 Same for me it seems! Great great great!

 Tatsuya, I take it that you have migemo installed on your system and
that this might be the reason that you were unable to reproduce it?

 Would it be albe to save-guard the call to migemo so that it doesn't
segfault when it's not installed - or disable the option by default? I
rather expect fewer people to have that actually installed and in need
of it than people annoyed by the segfault and not having it installed.

 Thanks, and if you have a fix for it, can you try to get it into lenny
too? That would be really great.

 Thanks, Akos, for finding out about the workaround!
Rhonda

Message #58 received at 475199@bugs.debian.org (full text, mbox, reply):

From: d+deb@vdr.jp

To: 475199@bugs.debian.org

Cc: control@bugs.debian.org

Subject: Re: w3m segfaults after search

Date: Sat, 3 Jul 2010 14:49:51 +0900

tags 475199 - moreinfo unreproducible
forcemerge 372171 475199
thanks
-- 
Regards,
	dai

GPG Fingerprint = 0B29 D88E 42E6 B765 B8D8 EA50 7839 619D D439 668E

Message #67 received at 475199@bugs.debian.org (full text, mbox, reply):

From: d+deb@vdr.jp

To: control@bugs.debian.org

Cc: 372171@bugs.debian.org, 475199@bugs.debian.org, 532921@bugs.debian.org

Subject: Re w3m: segfault while visiting debianpages

Date: Wed, 21 Jul 2010 01:01:24 +0900

[Message part 1 (text/plain, inline)]

forcemerge 372171 475199 532921
retitle 372171 w3m: searching without migemo causes segfault
thanks
-- 
Regards,
	dai

GPG Fingerprint = 0B29 D88E 42E6 B765 B8D8 EA50 7839 619D D439 668E

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