mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-11 08:02:36 -04:00
17487b31f4
Add verifier coverage for the two ways a non-percpu pointer can be stored in a __percpu_kptr field: a program-BTF local allocation returned by bpf_obj_new(), and a referenced kernel-BTF task_struct pointer. Without the verifier fix, both programs are unexpectedly accepted and the negative tests fail. Requiring MEM_PERCPU makes both programs fail verification with the expected invalid-kptr diagnostic. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20260904084325.52250-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>