Btrfs: don't BUG_ON() in btrfs_truncate_inode_items()

[ Upstream commit 0552210997badb6a60740a26ff9d976a416510f0 ]

btrfs_free_extent() can fail because of ENOMEM. There's no reason to
panic here, we can just abort the transaction.

Fixes: f4b9aa8d3b87 ("btrfs_truncate")
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e61044d..28a58f4 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4740,7 +4740,10 @@ delete:
                                                extent_num_bytes, 0,
                                                btrfs_header_owner(leaf),
                                                ino, extent_offset);
-                       BUG_ON(ret);
+                       if (ret) {
+                               btrfs_abort_transaction(trans, ret);
+                               break;
+                       }
                        if (btrfs_should_throttle_delayed_refs(trans, fs_info))
                                btrfs_async_run_delayed_refs(fs_info,
                                        trans->delayed_ref_updates * 2,