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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>
This commit is contained in:
Daniel Borkmann 2018-06-02 23:06:38 +02:00 committed by Alexei Starovoitov
parent 1fbc2e0cfc
commit b3bbba3570
1 changed files with 1 additions and 1 deletions
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2
tools/bpf/bpf_exp.l
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@ -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;
}