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-rw-r--r--include/linux/bpf_verifier.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index c8a78e830fca..182b16a91084 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -396,6 +396,13 @@ static inline bool bpf_verifier_log_needed(const struct bpf_verifier_log *log)
log->level == BPF_LOG_KERNEL);
}
+static inline bool
+bpf_verifier_log_attr_valid(const struct bpf_verifier_log *log)
+{
+ return log->len_total >= 128 && log->len_total <= UINT_MAX >> 2 &&
+ log->level && log->ubuf && !(log->level & ~BPF_LOG_MASK);
+}
+
#define BPF_MAX_SUBPROGS 256
struct bpf_subprog_info {