On Mon, Oct 14, 2019 at 12:01:44PM +0200, Jessica Yu wrote: > +++ Heiner Kallweit [11/10/19 21:26 +0200]: > > On 10.10.2019 19:15, Luis Chamberlain wrote: > > > > > > > > > On Thu, Oct 10, 2019, 6:50 PM Heiner Kallweit <hkallwe...@gmail.com > > > <mailto:hkallwe...@gmail.com>> wrote: > > > > > > MODULE_SOFTDEP("pre: realtek") > > > > > > Are you aware of any current issues with module loading > > > that could cause this problem? > > > > > > > > > Nope. But then again I was not aware of MODULE_SOFTDEP(). I'd encourage > > > an extension to lib/kmod.c or something similar which stress tests this. > > > One way that comes to mind to test this is to allow a new tests case > > > which loads two drives which co depend on each other using this macro. > > > That'll surely blow things up fast. That is, the current kmod tests uses > > > request_module() or get_fs_type(), you'd want a new test case with this > > > added using then two new dummy test drivers with the macro dependency. > > > > > > If you want to resolve this using a more tested path, you could have > > > request_module() be used as that is currently tested. Perhaps a test > > > patch for that can rule out if it's the macro magic which is the issue. > > > > > > Luis > > > > > Maybe issue is related to a bug in introduction of symbol namespaces, see > > here: > > https://lkml.org/lkml/2019/10/11/659 > > If you're running into depmod and module loading issues with kernels > >=5.3-rc1, > it's likely due to the namespaces patchset and we're working on > getting all the kinks fixed. Could you please ask the bug reporter to > try the latest -rc kernel with these set of fixes applied on top? > > > https://lore.kernel.org/linux-modules/20191010151443.7399-1-maenn...@google.com/ > > They fix a known depmod issue caused by our __ksymtab naming scheme, > which is being reverted in favor of extracting the namespace from > __kstrtabns and __ksymtab_strings. These fixes will be in by -rc4.
Jessica, thanks! Do we have a test case to catch this proactively in the future? If not can one be written? Luis
