On Thu, Nov 16, 2017 at 01:55:39PM -0500, Joe Lawrence wrote: > Hi Josh, > > I wanted to test Miroslav's "livepatch: Introduce signal and force sysfs > attributes" series and merged his patches on top of this morning's Linus > tree. When attempting to unload the livepatch-sample.ko, I noticed that > it held an outstanding reference even after disabling the livepatch. > This prevented me from unloading the livepatch module. Yeah, unfortunately the ORC unwinder doesn't quite support the consistency model yet. It doesn't have the reliable stacktrace hooks yet (CONFIG_HAVE_RELIABLE_STACKTRACE), so klp_have_reliable_stack() return false and the sample module sets patch->immediate, so the patch can't be unloaded. Not much is needed for that, I just haven't had a chance to do it yet. Here's a summary of what I think is needed in case anybody wants to take a shot at it: https://lkml.kernel.org/r/20171004140422.wikfoodyhoas2eae@treble -- Josh -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
