Here are outstanding problems (aside from TODO items) I know of off hand. These range from bug reports I haven't looked into, to subtle old XXX comments for which I'll have to dredge up memories of the details. I hope someone likes to wikify or otherwise organize this list somewhere. * detach vs report race Alexey Dobriyan <adobriyan@xxxxx> identified a race viz dead_engine_ops vs engine->flags Race explanation makes sense, but so far never been reproduced. Needs a little thought. * https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=243534 Unknown wedge, maybe stale report * https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=248532 "tkill(SIGCONT) is not reported by waitpid()" Unexamined * ia64 RBS scheme This is tortured IA64-specific issue that was known from the start but never properly handled. The original contributors of the IA64 port dropped the ball on this part of the implementation. It needs someone with coherent understanding of the ia64 RBS hardware and how the kernel uses it, to consult. * https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207002 crash, needs investigation * utrace_inject_signal ENOSYS for non-utrace_get_signal case Needs implementation with careful synchronization. Probably interface details change for "engine interaction" TODO item, making implementation story here different. * ptrace race conditions See XXX in kernel/ptrace.c; need to rethink synchronization/life-cycle for ptrace_state. Thanks, Roland
