baobab crashed with SIGSEGV in g_utf8_validate()

[smmalis37]

Binary package hint: gnome-utils

Launching baobab causes immediate segfault.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/baobab
NonfreeKernelModules: nvidia
Package: gnome-utils 2.24.0-0ubuntu1
ProcAttrCurrent: unconfined
ProcCmdline: baobab
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-utils
StacktraceTop:
 g_utf8_validate () from /usr/lib/libglib-2.0.so.0
 gconf_value_list_from_primitive_list ()
 gconf_engine_set_list () from /usr/lib/libgconf-2.so.4
 gconf_client_set_list () from /usr/lib/libgconf-2.so.4
 ?? ()
Title: baobab crashed with SIGSEGV in g_utf8_validate()
Uname: Linux 2.6.27-7-generic i686
UserGroups: adm admin cdrom dialout lp lpadmin plugdev pulse pulse-access pulse-rt sambashare

[Apport retracing service (apport)]

StacktraceTop:g_utf8_validate () from /usr/lib/libglib-2.0.so.0
gconf_value_list_from_primitive_list (list_type=GCONF_VALUE_STRING, list=0x9a5e6c0,
gconf_engine_set_list (conf=0x990a7f8,
gconf_client_set_list (client=0x9909d58,
baobab_init () at baobab.c:648

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

[smmalis37 (smmalis37)]

The backtrace looks exactly like the Stacktrace apport created, only with less detail.

[Sebastien Bacher (seb128)]

you don't get glib details if you install libglib2.0-0-dbg?

[Sebastien Bacher (seb128)]

could you get a valgrind log?

[Sebastien Bacher (seb128)]

you can read https://wiki.ubuntu.com/Valgrind which has the required instruction

[smmalis37 (smmalis37)]

Here we go, something went wrong with the debug symbols before. Heres the important GDB lines:

"Program received signal SIGSEGV, Segmentation fault.
0xb74280ab in IA__g_utf8_validate (
    str=0x57e58955 <Address 0x57e58955 out of bounds>, max_len=-1, end=0x0)
    at /build/buildd/glib2.0-2.18.2/glib/gutf8.c:1573
1573 /build/buildd/glib2.0-2.18.2/glib/gutf8.c: No such file or directory.
 in /build/buildd/glib2.0-2.18.2/glib/gutf8.c"

"(gdb) thread apply all backtrace full

Thread 1 (Thread 0xb6d27700 (LWP 16291)):
#0 0xb74280ab in IA__g_utf8_validate (
    str=0x57e58955 <Address 0x57e58955 out of bounds>, max_len=-1, end=0x0)
    at /build/buildd/glib2.0-2.18.2/glib/gutf8.c:1573
 p = <value optimized out>
#1 0xb7cd0522 in gconf_value_list_from_primitive_list ()
   from /usr/lib/libgconf-2.so.4
No symbol table info available.
#2 0xb7ce0ade in gconf_engine_set_list () from /usr/lib/libgconf-2.so.4
No symbol table info available.
#3 0xb7ce3fdb in gconf_client_set_list () from /usr/lib/libgconf-2.so.4
No symbol table info available.
#4 0x08052f88 in ?? ()
No symbol table info available.
#5 0x080539fa in main ()
No symbol table info available."

[Thomas Sibley (thomas-sibley)]

I'm also experiencing this issue. Baobab was working just fine until I unchecked some of the volumes it crawls for a "filesystem" scan and then tried to do such a scan (at which point it segfaulted and continued to do so upon re-running it).

[Thomas Sibley (thomas-sibley)]

Blowing away ~/.gconf/apps/baobab/ makes it stop segfaulting. I am able to reproduce the segfault by going into Baobab's Preferences and unchecking the root partition (leaving only two external usb HDs I have attached).

The problem key is /apps/baobab/properties/skip_scan_uri_list. When one of the values is "file:///" Baobab will segfault as reported above.

For the record, this is the backtrace I get:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb6dc9700 (LWP 10098)]
0xb74ca0ab in IA__g_utf8_validate (
    str=0x57e58955 <Address 0x57e58955 out of bounds>, max_len=-1, end=0x0)
    at /build/buildd/glib2.0-2.18.2/glib/gutf8.c:1573
1573 /build/buildd/glib2.0-2.18.2/glib/gutf8.c: No such file or directory.
 in /build/buildd/glib2.0-2.18.2/glib/gutf8.c
(gdb) bt
#0 0xb74ca0ab in IA__g_utf8_validate (
    str=0x57e58955 <Address 0x57e58955 out of bounds>, max_len=-1, end=0x0)
    at /build/buildd/glib2.0-2.18.2/glib/gutf8.c:1573
#1 0xb7d72522 in gconf_value_list_from_primitive_list ()
   from /usr/lib/libgconf-2.so.4
#2 0xb7d82ade in gconf_engine_set_list () from /usr/lib/libgconf-2.so.4
#3 0xb7d85fdb in gconf_client_set_list () from /usr/lib/libgconf-2.so.4
#4 0x08052f88 in ?? ()
#5 0x080539fa in main ()

[smmalis37 (smmalis37)]

Went into gconf editor apps/baobab/properties/skip_scan_uri_list, removed the "file:///" entry and it works now. Thanks!

[Fabio Marzocca (thesaltydog)]

I have openend bug on upstream: http://bugzilla.gnome.org/show_bug.cgi?id=560476

[Adam Niedling (krychek)]

I had the same issue and smmalis37's workaround fixed it.

[Fabio Marzocca (thesaltydog)]

The bug is fixed upstream in trunk.

[Pedro Villavicencio (pedro)]

the new version containing the fix is already on jaunty, marking this as fixed, thanks for reporting.