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Bug 364850 - crash in Help: trying to read the gdb i...
crash in Help: trying to read the gdb i...
Status: RESOLVED FIXED
Product: yelp
Classification: Applications
Component: General
2.16.x
Other All
: High critical
: ---
Assigned To: Yelp maintainers
Yelp maintainers
: 362797 363710 365167 366240 366530 374575 376712 377619 380237 385024 394388 401904 (view as bug list)
Depends on:
Blocks:
 
 
Reported: 2006-10-24 23:05 UTC by Mikael Hermansson
Modified: 2007-02-08 01:20 UTC
See Also:
GNOME target: ---
GNOME version: 2.15/2.16


Description Mikael Hermansson 2006-10-24 23:05:13 UTC 
Version: 2.16.1

What were you doing when the application crashed?
trying to read the gdb info pages craches yelp.



Distribution: Ubuntu 6.10 (edgy)
Gnome Release: 2.16.1 2006-10-02 (Ubuntu)
BugBuddy Version: 2.16.0

Memory status: size: 93908992 vsize: 0 resident: 93908992 share: 0 rss: 27377664 rss_rlim: 0
CPU usage: start_time: 1161730956 rtime: 0 utime: 99 stime: 0 cutime:94 cstime: 0 timeout: 5 it_real_value: 0 frequency: 0

Backtrace was generated from '/usr/bin/yelp'

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1227700560 (LWP 10927)]
[New Thread -1285477472 (LWP 10930)]
[New Thread -1247573088 (LWP 10929)]
(no debugging symbols found)
0xffffe410 in __kernel_vsyscall ()
Setting up the environment for debugging gdb.

+ Trace 78136

Thread 1 (Thread -1227700560 (LWP 10927))

  • #0 __kernel_vsyscall
  • #1 __waitpid_nocancel
    from /lib/tls/i686/cmov/libpthread.so.0
  • #2 gnome_gtk_module_info_get
    from /usr/lib/libgnomeui-2.so.0
  • #3 <signal handler called>
  • #4 __kernel_vsyscall
  • #5 raise
    from /lib/tls/i686/cmov/libc.so.6
  • #6 abort
    from /lib/tls/i686/cmov/libc.so.6
  • #7 __fsetlocking
    from /lib/tls/i686/cmov/libc.so.6
  • #8 free
    from /lib/tls/i686/cmov/libc.so.6
  • #9 g_free
    from /usr/lib/libglib-2.0.so.0
  • #10 ??
  • #11 ??
  • #12 _IO_stdin_used
  • #13 ??
  • #14 ??
  • #15 ??
  • #0 __kernel_vsyscall 






Comment 1


Don Scorgie





          2006-10-24 23:14:49 UTC
        



Okay.  Confirming the bug.  I can reproduce.

The relevant section of the full stacktrace is:





+
Trace
    78137






Thread 1
          (Thread -1227790672 (LWP 19063))


    

  • 
#0
__kernel_vsyscall

    • 

  • 
#1
raise

    
                from
                /lib/tls/i686/cmov/libc.so.6

    

    • 

  • 
#2
abort

    
                from
                /lib/tls/i686/cmov/libc.so.6

    

    • 

  • 
#3
__fsetlocking

    
                from
                /lib/tls/i686/cmov/libc.so.6

    

    • 

  • 
#4
free

    
                from
                /lib/tls/i686/cmov/libc.so.6

    

    • 

  • 
#5
IA__g_free

    
                at gmem.c
                  line
                  187

    

    • 

  • 
#6
info_process_text_notes

    
                at yelp-info-parser.c
                  line
                  1099

    

    • 

  • 
#7
parse_tree_level

    
                at yelp-info-parser.c
                  line
                  717

    

    • 

  • 
#8
parse_tree_level

    
                at yelp-info-parser.c
                  line
                  732

    

    • 

  • 
#9
yelp_info_parser_parse_tree

    
                at yelp-info-parser.c
                  line
                  763

    

    • 

  • 
#10
info_pager_parse

    
                at yelp-info-pager.c
                  line
                  196

    

    • 

  • 
#11
xslt_pager_process

    
                at yelp-xslt-pager.c
                  line
                  185

    

    • 

  • 
#12
process_cb

    
                at yelp-pager.c
                  line
                  268

    

    • 

  • 
#13
g_idle_dispatch

    
                at gmain.c
                  line
                  3926

    

    • 

  • 
#14
IA__g_main_context_dispatch

    
                at gmain.c
                  line
                  2045

    

    • 

  • 
#15
g_main_context_iterate

    
                at gmain.c
                  line
                  2677

    

    • 

  • 
#16
IA__g_main_loop_run

    
                at gmain.c
                  line
                  2881

    

    • 








I'll have a look at the problem soon, promise.






Comment 2


Don Scorgie





          2006-10-24 23:16:54 UTC
        



*** Bug 363710 has been marked as a duplicate of this bug. ***






Comment 3


Don Scorgie





          2006-10-25 09:06:20 UTC
        



The gdb info page seems to use a *Note style that no other info page in the world uses.  At some point, the gdb info page feel out of my computer and so I didn't get any chance to try testing it, despite having code to handle it.  This code path contained a double-free, causing the crash.  Since no other info manual uses this type of *Note (apparently), I missed this during testing.

I've removed the double free and the crash has gone away.  This will make its way into the next version of yelp (2.16.2).

Closing.  Thanks.

2006-10-25  Don Scorgie  <dscorgie@cvs.gnome.org>

	* src/yelp-info-parser.c:
	Fix double free in stupid link types only used by gdb
	info page (apparently).  Bug #364850






Comment 4


Don Scorgie





          2006-10-26 09:55:54 UTC
        



*** Bug 365167 has been marked as a duplicate of this bug. ***






Comment 5


Don Scorgie





          2006-11-05 16:50:05 UTC
        



*** Bug 366530 has been marked as a duplicate of this bug. ***






Comment 6


Don Scorgie





          2006-11-05 16:50:21 UTC
        



*** Bug 366240 has been marked as a duplicate of this bug. ***






Comment 7


Don Scorgie





          2006-11-14 15:36:52 UTC
        



*** Bug 374575 has been marked as a duplicate of this bug. ***






Comment 8


Don Scorgie





          2006-11-14 15:37:13 UTC
        



*** Bug 362797 has been marked as a duplicate of this bug. ***






Comment 9


André Klapper





          2006-11-18 23:19:34 UTC
        



*** Bug 376712 has been marked as a duplicate of this bug. ***






Comment 10


Don Scorgie





          2006-11-21 12:07:55 UTC
        



*** Bug 377619 has been marked as a duplicate of this bug. ***






Comment 11


Don Scorgie





          2006-12-02 11:20:41 UTC
        



*** Bug 380237 has been marked as a duplicate of this bug. ***






Comment 12


Bruno Boaventura





          2006-12-12 23:04:41 UTC
        



*** Bug 385024 has been marked as a duplicate of this bug. ***






Comment 13


Christian Kirbach





          2007-01-29 21:21:25 UTC
        



*** Bug 401904 has been marked as a duplicate of this bug. ***






Comment 14


André Klapper





          2007-02-08 01:20:02 UTC
        



*** Bug 394388 has been marked as a duplicate of this bug. ***