From: Jakub Kicinski <[email protected]>
Date: Tue, 25 Jul 2017 15:16:12 -0700
> The buffer passed to bpf_obj_get_info_by_fd() should be initialized
> to zeros. Kernel will enforce that to guarantee we can safely extend
> info structures in the future.
>
> Making the bpf_obj_get_info_by_fd() call in libbpf perform the zeroing
> is problematic, however, since some members of the info structures
> may need to be initialized by the callers (for instance pointers
> to buffers to which kernel is to dump translated and jited images).
>
> Remove the zeroing and fix up the in-tree callers before any kernel
> has been released with this code.
>
> As Daniel points out this seems to be the intended operation anyway,
> since commit 95b9afd3987f ("bpf: Test for bpf ID") is itself setting
> the buffer pointers before calling bpf_obj_get_info_by_fd().
>
> Signed-off-by: Jakub Kicinski <[email protected]>
Applied, thanks Jakub.
