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| author |   Alexei Starovoitov <ast@kernel.org> | 2019-10-28 20:24:26 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-10-30 16:22:55 +0100 |
| commit | 15ab09bdca616538597fe4d2eb4db3c2d28716ba (patch) | |
| tree | 6bfe97e74e387d3b4941d653bac5aafc3c2cc83d /Documentation/bpf | |
| parent | libbpf: Don't use kernel-side u32 type in xsk.c (diff) | |
| download | wireguard-linux-15ab09bdca616538597fe4d2eb4db3c2d28716ba.tar.xz wireguard-linux-15ab09bdca616538597fe4d2eb4db3c2d28716ba.zip | |
bpf: Enforce 'return 0' in BTF-enabled raw_tp programs
The return value of raw_tp programs is ignored by __bpf_trace_run()
that calls them. The verifier also allows any value to be returned.
For BTF-enabled raw_tp lets enforce 'return 0', so that return value
can be used for something in the future.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191029032426.1206762-1-ast@kernel.org
Diffstat (limited to 'Documentation/bpf')
0 files changed, 0 insertions, 0 deletions