wireguard-linux/tools/testing/selftests/bpf/progs/snprintf_btf_void.c, branch stableWireGuard for the Linux kernelhttps://git.zx2c4.com/wireguard-linux/atom/tools/testing/selftests/bpf/progs/snprintf_btf_void.c?h=stable2026-09-03T16:31:52Zselftests/bpf: Add test for showing a void BTF type2026-09-03T16:31:52ZJiayuan Chenjiayuan.chen@linux.dev2026-09-01T10:47:39Zurn:sha1:1ae6aa61958a0ee6f254cefbee20663ffbadb195
Extend the snprintf_btf test with type_ids from the vmlinux BTF that
used to NULL-deref in the BTF show path: a "const void", checked to
render the "<unsupported kind:0>" placeholder, and a BTF_KIND_VAR,
checked to resolve and render without error.
The program renders from its own buffer and the test picks a VAR whose
resolved type fits it, so the render stays in bounds.
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://lore.kernel.org/r/20260901104924.346187-6-jiayuan.chen@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>