Messages in this thread | | | Date | Mon, 14 Oct 2019 12:01:44 +0200 | From | Jessica Yu <> | Subject | Re: Module loading problem since 5.3 |
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+++ 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 <hkallweit1@gmail.com <mailto:hkallweit1@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-maennich@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.
Thanks,
Jessica
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