bcachefs: fix unsafety in bch2_extent_ptr_to_text()

Need to check if we have a valid bucket before checking if ptr is stale

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/extents.c b/fs/bcachefs/extents.c
index 0e3ca99fbd2de1522c5e8dea8ac313232f60f7f3..36d12d2adb81e80207f63b7066f59f71a3c89f7c 100644 (file)
--- a/fs/bcachefs/extents.c
+++ b/fs/bcachefs/extents.c
@@ -998,7 +998,9 @@ void bch2_extent_ptr_to_text(struct printbuf *out, struct bch_fs *c, const struc
                        prt_str(out, " cached");
                if (ptr->unwritten)
                        prt_str(out, " unwritten");
-               if (ca && ptr_stale(ca, ptr))
+               if (b >= ca->mi.first_bucket &&
+                   b <  ca->mi.nbuckets &&
+                   ptr_stale(ca, ptr))
                        prt_printf(out, " stale");
        }
 }