Hi list, earlier I sent an email to the list complaining about SIGBUS's in a program of mine. With the generous help from Otto Moerbeek I was able to isolate the problem to the queue(3) SLIST_FOREACH() macros in my program that caused the SIGBUS's.
Basically using SLIST_FOREACH() and removing a node in the linked list causes a use after free, which OpenBSD-current looks for and handles. The solution to this was replacing the SLIST_FOREACH with SLIST_FOREACH_SAFE() which takes an extra variable. Sample code that Otto pointed me to is in /usr/src/usr.sbin/slowcgi. After I fixed my program it ran smoothly again on -current and the SIGBUS is gone. I'm very grateful and thankful that my hardware indeed was not defect. Thanks Otto! Have a good remaining May 1st! -peter
