diff --git a/src/context/context.rs b/src/context/context.rs
index 4ee0e56302..0d80c0e3cd 100644
--- a/src/context/context.rs
+++ b/src/context/context.rs
@@ -854,6 +854,15 @@ impl FdTbl {
             self.active_count += 1;
             Some(i)
         } else {
+            crate::info!("insert_file EEXIST: index={:#x} real_index={} fdtbl.len()={} is_upper={} posix_fdtbl.len()={} upper_fdtbl.len()={} active_count={}", index, real_index, fdtbl.len(), index & UPPER_FDTBL_TAG != 0, self.posix_fdtbl.len(), self.upper_fdtbl.len(), self.active_count);
+            // Dump the posix fdtbl contents
+            for (i, slot) in self.posix_fdtbl.iter().enumerate() {
+                if slot.is_some() {
+                    crate::info!("  posix_fdtbl[{}] = Some(<file>)", i);
+                } else {
+                    crate::info!("  posix_fdtbl[{}] = None", i);
+                }
+            }
             None
         }
     }