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authorDan Carpenter <dan.carpenter@oracle.com>2018-07-13 18:11:39 +0300
committerAlexei Starovoitov <ast@kernel.org>2018-07-16 15:00:56 -0700
commitb0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b (patch)
tree830ba9e74e7b8d8c48c60f9dda4ec0d0b4305e87 /samples
parent301f935be9e09a1bf188bd8262a4db0aeeac2b50 (diff)
downloadlinux-stericsson-b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b.tar.gz
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>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/bpf_load.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index 89161c9ed466..904e775d1a44 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -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) {