Bug#516455: segfault in ptmalloc_unlock_all

[Aurelien Jarno <aurelien@aurel32.net>]

tag 516455 + moreinfo
thanks

On Sat, Feb 21, 2009 at 02:54:33PM +0100, Jörg Sommer wrote:
> Package: libc6
> Version: 2.7-18
> Severity: normal
> 
> Hi,
> 
> I've got a segmentation fault. The coredump says this:
> 
> Core was generated by `/bin/sh /etc/ppp/ip-up.d/0pppstatus ppp0 /dev/tts/0 115200 217.185.133.43 62.53'.
> Program terminated with signal 11, Segmentation fault.
> [New process 22450]
> #0  0xb7ebf249 in ptmalloc_unlock_all () from /lib/libc.so.6
> (gdb) bt f
> #0  0xb7ebf249 in ptmalloc_unlock_all () from /lib/libc.so.6
> No symbol table info available.
> #1  0xb7eea266 in fork () from /lib/libc.so.6
> No symbol table info available.
> #2  0x080507c4 in ?? ()
> No symbol table info available.
> #3  0x08d3f238 in ?? ()
> No symbol table info available.
> #4  0x08d3f238 in ?? ()
> No symbol table info available.
> #5  0x08d3f238 in ?? ()
> No symbol table info available.
> #6  0x00000000 in ?? ()
> No symbol table info available.
> 

It's most probably not a glibc bug, but a bug in pppstatus. Anyway this
backtrace is clearly not enough to find the problem.

Could you please install libc6-dbg and rebuild pppstatus without
stripping the binaries (define DEB_BUILD_OPTIONS="nostrip"). That will
give you a more usefull backtrace.

Aurelien

-- 
Aurelien Jarno	                        GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net