samples: bpf: ensure that we don't load over MAX_PROGS programs

I can't see that we check prog_cnt to ensure it doesn't go over
MAX_PROGS.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Dan Carpenter 2018-07-13 18:11:39 +03:00 committed by Alexei Starovoitov
parent 301f935be9
commit b0294bc1ad

View File

@ -107,6 +107,9 @@ static int load_and_attach(const char *event, struct bpf_insn *prog, int size)
return -1;
}
if (prog_cnt == MAX_PROGS)
return -1;
fd = bpf_load_program(prog_type, prog, insns_cnt, license, kern_version,
bpf_log_buf, BPF_LOG_BUF_SIZE);
if (fd < 0) {