On Wed, Mar 09, 2016 at 05:59:40PM +1100, Balbir Singh wrote: > > Changelog v6: > 1. Experimental changes -- need loads of testing > Based on the assumption that very far TOC and LR values > indicate the call happened through a stub and the > stub return works differently from a local call which > uses klp_return_helper. Well, this is true, but the inverse is not. Less than 2GiB between LR and TOC is a necessary but not a sufficient condition for a local call. I see the problem with your code that it hardly detects calls from one module to another nearby. It will fail iff you mistake a global call to a module loaded earlier to be local while patching AND you access global data / 64-bit constants after that call before the TOC is sanitised again. Torsten -- 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
