The existing 16Mbyte verifier log limit is not enough for log_level=2 even for small programs. Increase it to 1Gbyte. Note it's not a kernel memory limit. It's an amount of memory user space provides to store the verifier log. The kernel populates it 1k at a time. Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx> --- kernel/bpf/verifier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 76089a094147..3722fb0bc7bc 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -7969,7 +7969,7 @@ int bpf_check(struct bpf_prog **prog, union bpf_attr *attr, ret = -EINVAL; /* log attributes have to be sane */ - if (log->len_total < 128 || log->len_total > UINT_MAX >> 8 || + if (log->len_total < 128 || log->len_total > UINT_MAX >> 2 || !log->level || !log->ubuf || log->level & ~BPF_LOG_MASK) goto err_unlock; } -- 2.20.0
