yelp crashed with SIGSEGV in free() while searching

[Stephan]

Binary package hint: yelp

crashed while searching for a topic

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: yelp 3.0.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Apr 16 14:41:21 2011
ExecutablePath: /usr/bin/yelp
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: gnome-help
ProcEnviron:
 LANGUAGE=de:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f92af65088d <free+29>: mov -0x8(%rdi),%rsi
 PC (0x7f92af65088d) ok
 source "-0x8(%rdi)" (0xfffffffffffffffb) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: yelp
StacktraceTop:
 free () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /usr/lib/libyelp.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
 clone () from /lib/x86_64-linux-gnu/libc.so.6
Title: yelp crashed with SIGSEGV in free()
UpgradeStatus: Upgraded to natty on 2011-04-15 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a valgrind log following the instructions at https://wiki.ubuntu.com/Valgrind and attach the file to the bug report. This will greatly help us in tracking down your problem.

[Fritz Heinrichmeyer (fritz-heinrichmeyer)]

i tried to deliver the output,

 but under valgrind there was no crash ...

i simply started yelp (there are missing files with my german locale , the crash does not happen with LANGUAGE=C)

======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x78a8f)[0x7f281da2fa8f]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x73)[0x7f281da338e3]
/usr/lib/libyelp.so.0(+0x1dc17)[0x7f2820e79c17]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x6a3e4)[0x7f281dfd33e4]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x6d8c)[0x7f281dd51d8c]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f281da9d04d]
======= Memory map: ========
00400000-0040c000 r-xp 00000000 08:05 800055 /usr/bin/yelp
0060b000-0060c000 r--p 0000b000 08:05 800055 /usr/bin/yelp
0060c000-0060d000 rw-p 0000c000 08:05 800055 /usr/bin/yelp
00af3000-01565000 rw-p 00000000 00:00 0 [heap]
7f27fe000000-7f2800000000 rwxp 00000000 00:00 0
7f2800000000-7f2800e32000 rw-p 00000000 00:00 0
7f2800e32000-7f2804000000 ---p 00000000 00:00 0
7f280401b000-7f2804169000 rw-p 00000000 00:00 0
7f2804169000-7f28041af000 r--p 00000000 08:05 2232918 /usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf
7f28041af000-7f2804953000 rw-p 00000000 00:00 0
7f2804953000-7f2804954000 ---p 00000000 00:00 0
7f2804954000-7f2805154000 rw-p 00000000 00:00 0
7f2805154000-7f28051b4000 rw-s 00000000 00:04 11010061 /SYSV00000000 (deleted)
7f28051b4000-7f28051f6000 r-xp 00000000 08:05 790521 /usr/lib/libibus.so.2.0.0
7f28051f6000-7f28053f6000 ---p 00042000 08:05 790521 /usr/lib/libibus.so.2.0.0
7f28053f6000-7f28053f7000 r--p 00042000 08:05 790521 /usr/lib/libibus.so.2.0.0
7f28053f7000-7f28053f8000 rw-p 00043000 08:05 790521 /usr/lib/libibus.so.2.0.0
7f28053f8000-7f28053f9000 rw-p 00000000 00:00 0
7f28053f9000-7f28053fe000 r-xp 00000000 08:05 792711 /usr/lib/gtk-2.0/2.10.0/immodules/im-ibus.so
7f28053fe000-7f28055fd000 ---p 00005000 08:05 792711 /usr/lib/gtk-2.0/2.10.0/immodules/im-ibus.so
7f28055fd000-7f28055fe000 r--p 00004000 08:05 792711 /usr/lib/gtk-2.0/2.10.0/immodules/im-ibus.so
7f28055fe000-7f28055ff000 rw-p 00005000 08:05 792711 /usr/lib/gtk-2.0/2.10.0/immodules/im-ibus.so
7f28055ff000-7f280565f000 rw-s 00000000 00:04 10977292 /SYSV00000000 (deleted)
7f28056a0000-7f28056a1000 ---p 00000000 00:00 0
7f28056a1000-7f2805ea1000 rw-p 00000000 00:00 0
7f2805ea1000-7f2805ee5000 r--p 00000000 08:05 2232921 /usr/share/fonts/truetype/msttcorefonts/Arial.ttf
7f2805ee5000-7f2805ee7000 r-xp 00000000 08:05 1055361 /usr/lib/x86_64-linux-gnu/pango/1.6.0/modules/pango-basic-fc.so
7f2805ee7000-7f28060e6000 ---p 00002000 08:05 1055361 /usr/lib/x86_64-linux-gnu/pango/1.6.0/modules/pango-basic-fc.so
7f28060e6000-7f28060e7000 r--p 00001000 08:05 1055361 /usr/lib/x86_64-linux-gnu/pango/1.6.0/modules/pango-basic-fc.so
7f28060e7000-7f28060e8000 rw-p 00002000 08...

[Fritz Heinrichmeyer (fritz-heinrichmeyer)]

I reverse my last statement about missing files:

It is all about missing files:
gnome-user-guide installs broken links in a german environment:

language-pack-gnome-de-base

when i delete this links yelp no more segfaults. IMO it is a bug that yelp segfaults.

It only cannot search man pages.

So yelp is buggy but there is also a packaging problem with language-pack-gnome-de-base

[Launchpad Janitor (janitor)]

[Expired for yelp (Ubuntu) because there has been no activity for 60 days.]

[Dmitriy Larchenko (neokril)]

I have exactly the same problem with Russian documentation installed. Yelp stops crashing if launched with LANGUAGE=C

DistroRelease: Ubuntu 11.04
Package: yelp 3.0.0-0ubuntu2
Arch: amd64