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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 61ede335f6c3..de6fe176fdfb 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -33,6 +33,7 @@
#include "delalloc-space.h"
#include "block-group.h"
#include "discard.h"
+#include "rcu-string.h"
#undef SCRAMBLE_DELAYED_REFS
@@ -5668,6 +5669,19 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed)
&start, &end,
CHUNK_TRIMMED | CHUNK_ALLOCATED);
+ /* Check if there are any CHUNK_* bits left */
+ if (start > device->total_bytes) {
+ WARN_ON(IS_ENABLED(CONFIG_BTRFS_DEBUG));
+ btrfs_warn_in_rcu(fs_info,
+"ignoring attempt to trim beyond device size: offset %llu length %llu device %s device size %llu",
+ start, end - start + 1,
+ rcu_str_deref(device->name),
+ device->total_bytes);
+ mutex_unlock(&fs_info->chunk_mutex);
+ ret = 0;
+ break;
+ }
+
/* Ensure we skip the reserved area in the first 1M */
start = max_t(u64, start, SZ_1M);