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| author | Andrii Nakryiko <andriin@fb.com> | 2020-03-13 10:23:34 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-03-13 23:30:53 +0100 |
| commit | d121e1d34b72c4975ff0340901d926c0aaf98174 (patch) | |
| tree | cd25234c8e4096105993a9b4432d1f13ca59c044 /tools/lib/bpf/bpf_tracing.h | |
| parent | 3e2671fb9a95d2b46990832466383ec8384d88a3 (diff) | |
| download | lwn-d121e1d34b72c4975ff0340901d926c0aaf98174.tar.gz lwn-d121e1d34b72c4975ff0340901d926c0aaf98174.zip | |
libbpf: Ignore incompatible types with matching name during CO-RE relocation
When finding target type candidates, ignore forward declarations, functions,
and other named types of incompatible kind. Not doing this can cause false
errors. See [0] for one such case (due to struct pt_regs forward
declaration).
[0] https://github.com/iovisor/bcc/pull/2806#issuecomment-598543645
Fixes: ddc7c3042614 ("libbpf: implement BPF CO-RE offset relocation algorithm")
Reported-by: Wenbo Zhang <ethercflow@gmail.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200313172336.1879637-3-andriin@fb.com
Diffstat (limited to 'tools/lib/bpf/bpf_tracing.h')
0 files changed, 0 insertions, 0 deletions