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| author | Martin KaFai Lau <[email protected]> | 2022-08-30 23:19:46 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2022-08-31 20:21:45 +0000 |
| commit | 84e5a0f208ca341ec1ea88a97c40849a2d541faa (patch) | |
| tree | 3eb366755911c11a8e262a2aae1d68c569d25f36 /tools/testing/selftests/bpf/prog_tests/global_data_init.c | |
| parent | libbpf: Add GCC support for bpf_tail_call_static (diff) | |
| download | kernel-84e5a0f208ca341ec1ea88a97c40849a2d541faa.tar.gz kernel-84e5a0f208ca341ec1ea88a97c40849a2d541faa.zip | |
bpf, net: Avoid loading module when calling bpf_setsockopt(TCP_CONGESTION)
When bpf prog changes tcp-cc by calling bpf_setsockopt(TCP_CONGESTION),
it should not try to load module which may be a blocking operation.
This details was correct in the v1 [0] but missed by mistake in the
later revision in commit cb388e7ee3a8 ("bpf: net: Change do_tcp_setsockopt()
to use the sockopt's lock_sock() and capable()"). This patch fixes it by
checking the has_current_bpf_ctx().
[0] https://lore.kernel.org/bpf/[email protected]/
Fixes: cb388e7ee3a8 ("bpf: net: Change do_tcp_setsockopt() to use the sockopt's lock_sock() and capable()")
Signed-off-by: Martin KaFai Lau <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/global_data_init.c')
0 files changed, 0 insertions, 0 deletions