Hi Jessica, I found a bug:
[root@f25 ~]# modprobe livepatch-sample [root@f25 ~]# grep ' u ' /proc/kallsyms ffffffff81161080 u klp_enable_patch [livepatch_sample] ffffffff81a01800 u __fentry__ [livepatch_sample] ffffffff81161250 u klp_unregister_patch [livepatch_sample] ffffffff81161870 u klp_register_patch [livepatch_sample] ffffffff8131f0b0 u seq_printf [livepatch_sample] Notice that livepatch modules' undefined symbols are showing up in /proc/kallsyms. This can confuse klp_find_object_symbol() which can cause subtle bugs in livepatch. I stared at the module kallsyms code for a bit, but I don't see the bug. Maybe it has something to do with how we save the symbol table in copy_module_elf(). Any ideas? -- Josh
