On Tue, Jul 28, 2020 at 11:51 PM Andrii Nakryiko <andriin@xxxxxx> wrote:
>
> Check that link is NULL or proper pointer before invoking bpf_link__destroy().
> Not doing this causes crash in test_progs, when cg_storage_multi selftest
> fails.
>
> Cc: YiFei Zhu <zhuyifei@xxxxxxxxxx>
> Fixes: 3573f384014f ("selftests/bpf: Test CGROUP_STORAGE behavior on shared egress + ingress")
> Signed-off-by: Andrii Nakryiko <andriin@xxxxxx>
> ---
> .../bpf/prog_tests/cg_storage_multi.c | 42 ++++++++++++-------
> 1 file changed, 28 insertions(+), 14 deletions(-)
>
Awesome! Thanks for the fix. I did not realize the return was a -errno
rather than NULL like open_and_load.
