Commit b3bbba35 authored Jun 02, 2018 by Daniel Borkmann Committed by Alexei Starovoitov Jun 03, 2018

bpf: fix cbpf parser bug for octal numbers



Range is 0-7, not 0-9, otherwise parser silently excludes it from the
strtol() rather than throwing an error.

Reported-by: Marc Boschma <marc@boschma.cx>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

parent 1fbc2e0c

tools/bpf/bpf_exp.l

+1 −1

Original line number	Diff line number	Diff line
		@@ -175,7 +175,7 @@ extern void yyerror(const char *str);
		yylval.number = strtol(yytext, NULL, 10);
		return number;
		}
		([0][0-9]+) {
		([0][0-7]+) {
		yylval.number = strtol(yytext + 1, NULL, 8);
		return number;
		}