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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-07-13 18:11:39 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-07-16 15:00:56 -0700 |
| commit | b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b (patch) | |
| tree | 830ba9e74e7b8d8c48c60f9dda4ec0d0b4305e87 /samples | |
| parent | 301f935be9e09a1bf188bd8262a4db0aeeac2b50 (diff) | |
| download | linux-b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b.tar.gz linux-b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b.tar.bz2 linux-b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b.zip | |
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.c | 3 |
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) { |