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| author | Andrii Nakryiko <[email protected]> | 2023-05-08 23:55:02 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2023-05-12 12:05:21 -0700 |
| commit | bdeeed3498c7871c17465bb4f11d1bc67f9098af (patch) | |
| tree | b221e4b559bc7a642dd03266074cdb91ecdabbd7 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf | |
| parent | ee9fd0ac3017c4313be91a220a9ac4c99dde7ad4 (diff) | |
libbpf: fix offsetof() and container_of() to work with CO-RE
It seems like __builtin_offset() doesn't preserve CO-RE field
relocations properly. So if offsetof() macro is defined through
__builtin_offset(), CO-RE-enabled BPF code using container_of() will be
subtly and silently broken.
To avoid this problem, redefine offsetof() and container_of() in the
form that works with CO-RE relocations more reliably.
Fixes: 5fbc220862fc ("tools/libpf: Add offsetof/container_of macro in bpf_helpers.h")
Reported-by: Lennart Poettering <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf')
0 files changed, 0 insertions, 0 deletions