Hello! Kernel modules depend on a specific version of the kernel package that includes the Git commit hash of the kernel source tree at compile time (KERNEL_VERSION). When using a patched kernel source this Git commit hash changes each time the patches get applied, making each kernel binary effectively unique. This KERNEL_VERSION, however, is not part of the shared state hash signature, as for this purpose it gets replaced by the plain LINUX_VERSION.
Building out-of-tree kernel modules depend on a locally compiled kernel. Doing this in a clean working directory leads to a freshly patched kernel source which in turn results in a new KERNEL_VERSION. The out-of-tree kernel module then RDEPENDS on a kernel package with this new KERNEL_VERSION. As the shared state signature of the newly compiled kernel matches the existing one (the LINUX_VERSION hasn't changed) the new kernel is not packaged and doesn't end up in the package feed. Consequently installation of the out-of-tree kernel module fails as the required kernel package is not available. I have tried to make the packages aware of the specific KERNEL_VERSION. But as this variable gets re-assigned during parsing I get unstable basehash values. Another approach would be to apply the patches in the upstream repository to circumvent the need for local patching. Is there an easier way? Christian
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