On Sat, Dec 20, 2025 at 04:50:31AM +0100, Daniel Gomez wrote:
> The -EEXIST error code is reserved by the module loading infrastructure
> to indicate that a module is already loaded. When a module's init
> function returns -EEXIST, userspace tools like kmod interpret this as
> "module already loaded" and treat the operation as successful, returning
> 0 to the user even though the module initialization actually failed.
>
> This follows the precedent set by commit 54416fd76770 ("netfilter:
> conntrack: helper: Replace -EEXIST by -EBUSY") which fixed the same
> issue in nf_conntrack_helper_register().
>
> Affected modules:
> * pkcs8_key_parser x509_key_parser asymmetric_keys dns_resolver
> * nvme_keyring pkcs7_test_key rxrpc turris_signing_key
For the record, GregKH summarily rejected this approach:
https://lore.kernel.org/r/2025122212-fiction-setback-ede5@gregkh/
Thanks,
Lukas
