conky crashed with SIGSEGV in __underflow()

StacktraceTop:__underflow () from /lib/tls/i686/cmov/libc.so.6
_IO_default_xsgetn_internal () from /lib/tls/i686/cmov/libc.so.6
_IO_sgetn_internal () from /lib/tls/i686/cmov/libc.so.6
fread () from /lib/tls/i686/cmov/libc.so.6
read_exec (data=<value optimized out>,

Do you have mounted partitions in media which are called:

Main Disk
Data Disk
Extra Disk

?
What error messages you get when you launch conky from a terminal?

> Do you have mounted partitions in media which are called:
>
> Main Disk
> Data Disk
> Extra Disk
>
> ?
Yes.

> What error messages you get when you launch conky from a terminal?
Conky: use_spacer should have an argument of left, right, or none.
'yes' seems to be some form of 'true', so defaulting to right.
Conky: desktop window (12000a9) is subwindow of root window (188)
Conky: window type - override
Conky: drawing to created window (0x3a00001)
Conky: drawing to double buffer
Segmentation fault (core dumped)

--
Thomas Pifer <email address hidden>

I can't reproduce this on my machine; I thought the problem could be related to the name being used for your partitions (which contains a space) but in bug 279791 there is a crash reported with a similar .conkyrc (and partition names without a space).
Can you try to obtain a proper backtrace (see https://wiki.ubuntu.com/DebuggingProgramCrash)? The one reported by apport doesn't seem reliable.
Also, could you try to remove all entries and selectively add them back to .conkyrc so that we can pinpoint where exactly is the problem?

Also, can you try to remove this line from .conkyrc and see what happens:

${execi 30 tail -n3 /var/log/messages | fold -w50}

Thanks, that was useful.

Could you attach to this bug report your /var/log/messages file?
If you have edited your conky.conf file, or created a new one, attaching these should also be helpful.

I'm uploading a new version that should solve this problem, please test and reopen this bug if it still fails. Note that you may have to add a text_buffer_size greater that the default of 256 if you want to see all your log messages (640 should do).

This bug was fixed in the package conky - 1.6.1-0ubuntu3

---------------
conky (1.6.1-0ubuntu3) intrepid; urgency=low

  * debian/patches:
    - fix_exec_buffer_size.patch (LP: #279493, LP: #279791):
      fix SIGSEGV due to wrong buffer size being used in all exec* calls.

 -- Cesare Tirabassi <email address hidden> Fri, 10 Oct 2008 22:40:09 +0200