On 12 July 2010 17:24, René Wagner wrote: > On Fri, 2010-07-09 at 10:45 +0900, Daniel Stonier wrote: > > - Patched (using the memcpy's rather than the reinterprets in the > > SERIALIZER macro). > > - In signal+warn mode (echo 5 > /proc/cpu/alignment) > > - (float64&int32) client gives a bus error and kernel outputs an > > alignment trap message, but servers are fine > > - In default mode (echo 0 > /proc/cpu/alignment) > > - (float64&int32) client and server function without hanging like > before > > > > So...its working, but is this the right fix? > > You probably want to check where the unaligned memory access is > happening. Can you run your float_client from within gdb? This should > allow you to get a backtrace once the kernel has sent the signal (bus > error) from the alignment trap. > > Cheers, > > Rene > > Getting some more meaningful backtraces now - catch bus errors for both the float64's and the int32's in some cases, some with, some without that memcopy patch above. I'll put together some results when I get back to work in the morning. > - > ------------------------------------------------------------ > Dipl.-Inf. René Wagner Junior Researcher > DFKI Bremen Enrique-Schmidt-Str. 5 > Safe and Secure Cognitive Systems D-28359 Bremen > > Phone: (+49) 421-218-64224 Fax: (+49) 421-218-98-64224 > Web: http://www.informatik.uni-bremen.de/agebv/en/ReneWagner > --- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Deutsches Forschungszentrum für Künstliche Intelligenz GmbH > Firmensitz: Trippstadter Strasse 122, D-67663 Kaiserslautern > > Geschäftsführung: > Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender) > Dr. Walter Olthoff > Vorsitzender des Aufsichtsrats: > Prof. Dr. h.c. Hans A. Aukes > Amtsgericht Kaiserslautern HRB 2313 > ------------------------------------------------------------ > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > -- Phone : +82-10-5400-3296 (010-5400-3296) Home: http://snorriheim.dnsdojo.com/ Yujin Robot: http://www.yujinrobot.com/ Embedded Control Libraries: http://snorriheim.dnsdojo.com/redmine/wiki/ecl