From: David Sterba <dsterba@suse.com>
Date: Tue, 14 Apr 2026 15:30:31 +0000 (+0200)
Subject: btrfs: handle unexpected free-space-tree key types
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=4d95b9efd783adca472e957b2f576983e789b839;p=thirdparty%2Fkernel%2Flinux.git

btrfs: handle unexpected free-space-tree key types

Replace the conditional assertions with proper error handling and
transaction abort if we find an unexpected key type in the free space
tree.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index 9efd1ec90f03..472b3060e5ac 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -259,7 +259,11 @@ int btrfs_convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,
 				nr++;
 				path->slots[0]--;
 			} else {
-				ASSERT(0);
+				btrfs_err(fs_info, "unexpected free space tree key type %u",
+					  found_key.type);
+				ret = -EUCLEAN;
+				btrfs_abort_transaction(trans, ret);
+				goto out;
 			}
 		}
 
@@ -405,7 +409,11 @@ int btrfs_convert_free_space_to_extents(struct btrfs_trans_handle *trans,
 
 				nr++;
 			} else {
-				ASSERT(0);
+				btrfs_err(fs_info, "unexpected free space tree key type %u",
+					  found_key.type);
+				ret = -EUCLEAN;
+				btrfs_abort_transaction(trans, ret);
+				goto out;
 			}
 		}
 
@@ -1518,7 +1526,11 @@ int btrfs_remove_block_group_free_space(struct btrfs_trans_handle *trans,
 				nr++;
 				path->slots[0]--;
 			} else {
-				ASSERT(0);
+				btrfs_err(trans->fs_info, "unexpected free space tree key type %u",
+					  found_key.type);
+				ret = -EUCLEAN;
+				btrfs_abort_transaction(trans, ret);
+				return ret;
 			}
 		}