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Age	Commit message (Collapse)	Author
2026-05-13	selftests/bpf: Enable stack argument tests for arm64	Puranjay Mohan
	Now that arm64 supports stack arguments, enable the existing stack_arg, stack_arg_kfunc and verifier_stack_arg tests for __TARGET_ARCH_arm64. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260513045204.2403441-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-13	selftests/bpf: Add precision backtracking test for stack arguments	Yonghong Song
	Add a test that verifies precision backtracking works correctly across BPF-to-BPF calls when stack arguments are involved. The test passes a size value as incoming stack arg (arg6) to a subprog, which forwards it as the mem__sz parameter (outgoing arg7) to bpf_kfunc_call_stack_arg_mem. The expected __msg annotations verify that precision propagates from the kfunc's mem__sz argument back through the subprog frame to the caller's outgoing stack arg store. A companion BTF file (btf__stack_arg_precision.c) provides named parameter BTF for the __naked subprog via __btf_func_path. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260513045148.2400087-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>