bpf: add __must_check attributes to refcount manipulating helpers

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Helpers like bpf_prog_add(), bpf_prog_inc(), bpf_map_inc() can fail
with an error, so make sure the caller properly checks their return
value and not just ignores it, which could worst-case lead to use
after free.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Daniel Borkmann 2016-11-19 01:45:03 +01:00 • committed by David S. Miller

parent a055c19be9

commit 6d67942dd0

1 changed files with 7 additions and 5 deletions

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include/linux/bpf.h

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