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tools, bpftool: Fix memory leak in codegen error cases 

Free the memory allocated for the template on error paths in function
codegen.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200610130804.21423-1-tklauser@distanz.ch
This commit is contained in:
Tobias Klauser 2020-06-10 15:08:04 +02:00 committed by Daniel Borkmann
parent bd6fecb9a9
commit d4060ac969
1 changed files with 2 additions and 0 deletions
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2
tools/bpf/bpftool/gen.c
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@ -224,6 +224,7 @@ static int codegen(const char *template, ...)
} else {
p_err("unrecognized character at pos %td in template '%s'",
src - template - 1, template);
free(s);
return -EINVAL;
}
}
@ -234,6 +235,7 @@ static int codegen(const char *template, ...)
if (*src != '\t') {
p_err("not enough tabs at pos %td in template '%s'",
src - template - 1, template);
free(s);
return -EINVAL;
}
}