Andrii Nakryiko 4adb7a4a15 bpf: Fix leak in LINK_UPDATE and enforce empty old_prog_fd ...

Fix bug of not putting bpf_link in LINK_UPDATE command.
Also enforce zeroed old_prog_fd if no BPF_F_REPLACE flag is specified.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200424052045.4002963-1-andriin@fb.com

2020-04-24 17:27:02 -07:00

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