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(parent: 1682d8d) | patch
libbpf: Add NULL check to add_dummy_ksym_var
authorIan Rogers <irogers@google.com>
Tue, 4 May 2021 23:49:10 +0000 (16:49 -0700)
committerAndrii Nakryiko <andrii@kernel.org>
Wed, 5 May 2021 18:29:33 +0000 (11:29 -0700)
commit9683e5775c75097c46bd24e65411b16ac6c6cbb3
treee217f762417abfa1afc7ff057d3245763dd752d7tree | snapshot
parent1682d8df20aa505f6ab12c76e934b26ede39c529commit | diff
libbpf: Add NULL check to add_dummy_ksym_var

Avoids a segv if btf isn't present. Seen on the call path
__bpf_object__open calling bpf_object__collect_externs.

Fixes: 5bd022ec01f0 (libbpf: Support extern kernel function)
Suggested-by: Stanislav Fomichev <sdf@google.com>
Suggested-by: Petar Penkov <ppenkov@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210504234910.976501-1-irogers@google.com
tools/lib/bpf/libbpf.c diff | blob | history
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