doc: add a reference to the symlink issue

Signed-off-by: Andrea Terzolo <andreaterzolo3@gmail.com>
Co-authored-by: Lorenzo Susini <susinilorenzo1@gmail.com>

driver/bpf/filler_helpers.h

@@ -112,6 +112,9 @@ static __always_inline struct file *bpf_fget(int fd)
  * 2. we cannot use locks so we can face race conditions during the path reconstruction.
  * 3. reconstructed path could be slightly different from the one returned by `d_path`.
  *    See pseudo_filesystem prefixes or the " (deleted)" suffix.
+ *
+ * Take a look at the research that led to this implementation:
+ * https://github.com/falcosecurity/libs/issues/1111
  */
 static __always_inline char *bpf_d_path_approx(struct filler_data *data, struct path *path)
 {

driver/modern_bpf/helpers/store/auxmap_store_params.h

@@ -1473,6 +1473,9 @@ static __always_inline void apply_dynamic_snaplen(struct pt_regs *regs, u16 *sna
  * 3. reconstructed path could be slightly different from the one returned by `d_path`.
  *    See pseudo_filesystem prefixes or the " (deleted)" suffix.
  *
+ * Take a look at the research that led to this implementation:
+ * https://github.com/falcosecurity/libs/issues/1111
+ *
  * @param auxmap pointer to the auxmap in which we are storing the param.
  * @param path pointer to the path struct from which we will extract the path name
  */