[vdr] VDR 1.3.6 Segmentation fault in pthread_setschedparam

[Seppo Ingalsuo <seppo.ingalsuo@iki.fi>]

Hi,

Some other people on this list seem to have working dxr3 and Linux 2.6
setups. I get a segfault in vdr 1.3.6 start. It might be relatex to dxr3
plugin or Debian Sarge and Linux 2.6.3. Any ideas what goes wrong? 

vdr@napsu:~$ gdb /usr/local/bin/vdr --core=core.31861
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This GDB was configured as "i386-linux"...
Core was generated by `vdr -c/etc/vdr -v/opt/vdr -E/var/log/dvb
-L/usr/local/lib/vdr -r/usr/local/shar'.
Program terminated with signal 11, Segmentation fault.
 
warning: current_sos: Can't read pathname for load map: Input/output
error
 
Reading symbols from /usr/lib/libjpeg.so.62...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /lib/tls/libpthread.so.0...done.
Loaded symbols for /lib/tls/libpthread.so.0
Reading symbols from /lib/tls/libdl.so.2...done.
Loaded symbols for /lib/tls/libdl.so.2
Reading symbols from /usr/lib/libstdc++.so.5...done.
Loaded symbols for /usr/lib/libstdc++.so.5
Reading symbols from /lib/tls/libm.so.6...done.
Loaded symbols for /lib/tls/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/local/lib/vdr/libvdr-dxr3.so.1.3.6...done.
Loaded symbols for /usr/local/lib/vdr/libvdr-dxr3.so.1.3.6
#0  0x40045e9a in pthread_setschedparam () from /lib/tls/libpthread.so.0
(gdb) where
#0  0x40045e9a in pthread_setschedparam () from /lib/tls/libpthread.so.0

I tried to comment out pthread_setschedparam calls (for adjusting
scheduling I think) from dxr3 plugin but it didn't have effect. I got
the same segfault. There is also one in vdr's thread.c. 

bool cThread::Start(void)
{
  if (!running) {
     running = true;
     parentTid = pthread_self();
     pthread_create(&childTid, 
       NULL, (void *(*) (void *))&StartThread, (void *)this);
     pthread_setschedparam(childTid, SCHED_RR, 0);
     usleep(10000); 
     // otherwise calling Active() immediately after Start() 
     // causes a "pure virtual method called" error
     }
  return true; //XXX return value of pthread_create()???
}

Usleep for ten seconds to avoid error looks a bit fragile. Could this be
the problem?

Thanks for reading this far!
Seppo




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