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(parent: b125b62) | patch
libbpf: fix an snprintf() overflow check
authorDan Carpenter <dan.carpenter@oracle.com>
Tue, 19 Jul 2022 09:51:28 +0000 (12:51 +0300)
committerAlexei Starovoitov <ast@kernel.org>
Tue, 19 Jul 2022 17:47:31 +0000 (10:47 -0700)
commit49e4da832d16ea4469708028731713e4b2d12ea0
tree08d945ad390d43a3da4ab590fe3264f215b867cftree | snapshot
parentb125b62e2fc3acfa96e8607005759672ce286a81commit | diff
libbpf: fix an snprintf() overflow check

The snprintf() function returns the number of bytes it *would* have
copied if there were enough space.  So it can return > the
sizeof(gen->attach_target).

Fixes: da76868b0892 ("libbpf: Generate loader program out of BPF ELF file.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/YtZ+oAySqIhFl6/J@kili
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
tools/lib/bpf/gen_loader.c diff | blob | history
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