On Mon, 1 Feb 2021, Christoph Hellwig wrote: > On Fri, Jan 29, 2021 at 10:43:36AM +0100, Petr Mladek wrote: > > > --- a/kernel/livepatch/core.c > > > +++ b/kernel/livepatch/core.c > > > @@ -164,12 +164,8 @@ static int klp_find_object_symbol(const char *objname, const char *name, > > > .pos = sympos, > > > }; > > > > > > - mutex_lock(&module_mutex); > > > - if (objname) > > > + if (objname || !kallsyms_on_each_symbol(klp_find_callback, &args)) > > > module_kallsyms_on_each_symbol(klp_find_callback, &args); > > > - else > > > - kallsyms_on_each_symbol(klp_find_callback, &args); > > > - mutex_unlock(&module_mutex); > > > > This change is not needed. (objname == NULL) means that we are > > interested only in symbols in "vmlinux". > > > > module_kallsyms_on_each_symbol(klp_find_callback, &args) > > will always fail when objname == NULL. > > I just tried to keep the old behavior. I can respin it with your > recommended change noting the change in behavior, though. Yes, please. It would be cleaner that way. Miroslav
