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ba04841971
Add test_arena and test_arena_nullable members to bpf_testmod_ops3 with arena-tagged stub arguments and kfuncs that forward a caller-provided pointer to them. The kfuncs take arena-tagged arguments, so each round trip exercises both conversion directions end to end: the kfunc receives a kernel arena address and the trampoline converts it back to an arena pointer for the callback. The non-nullable callback dereferences its argument with no NULL branch and captures the raw ctx value, which the trigger program compares against the arena offset of the passed object, pinning the exact (u32)(kaddr - kern_vm_start) conversion. The nullable callback verifies that only a true kernel NULL arrives as NULL. Failure coverage: a program with no arena is rejected when it loads. The tests run on x86-64 and skip elsewhere, as the programs fail verification where the JIT lacks arena argument support. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20260808003938.3486067-11-memxor@gmail.com Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> |
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| .. | ||
| crypto/chacha20-s390 | ||
| cxl | ||
| fault-injection | ||
| ktest | ||
| kunit | ||
| memblock | ||
| nvdimm | ||
| radix-tree | ||
| rbtree | ||
| scatterlist | ||
| selftests | ||
| shared | ||
| vma | ||
| vsock | ||