This is a note to let you know that I've just added the patch titled btrfs: do proper error handling in btrfs_update_reloc_root to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: btrfs-do-proper-error-handling-in-btrfs_update_reloc.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7354bc7d740230b77f9cc9467629637a8c9fda5d Author: Josef Bacik <josef@xxxxxxxxxxxxxx> Date: Fri Mar 12 15:25:20 2021 -0500 btrfs: do proper error handling in btrfs_update_reloc_root [ Upstream commit 592fbcd50c99b8adf999a2a54f9245caff333139 ] We call btrfs_update_root in btrfs_update_reloc_root, which can fail for all sorts of reasons, including IO errors. Instead of panicing the box lets return the error, now that all callers properly handle those errors. Reviewed-by: Qu Wenruo <wqu@xxxxxxxx> Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx> Reviewed-by: David Sterba <dsterba@xxxxxxxx> Signed-off-by: David Sterba <dsterba@xxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 575604ebea44..b3368cfccabf 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -897,7 +897,7 @@ int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, int ret; if (!have_reloc_root(root)) - goto out; + return 0; reloc_root = root->reloc_root; root_item = &reloc_root->root_item; @@ -930,10 +930,8 @@ int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, ret = btrfs_update_root(trans, fs_info->tree_root, &reloc_root->root_key, root_item); - BUG_ON(ret); btrfs_put_root(reloc_root); -out: - return 0; + return ret; } /*