From: Josef Bacik <josef@toxicpanda.com>
To: Nikolay Borisov <nborisov@suse.com>,
linux-btrfs@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH v2 14/42] btrfs: handle btrfs_record_root_in_trans failure in create_subvol
Date: Wed, 2 Dec 2020 13:12:08 -0500 [thread overview]
Message-ID: <0f926a61-06c7-0a8c-8c38-f739dc49ed02@toxicpanda.com> (raw)
In-Reply-To: <6771e745-82c4-5bb7-5f2b-5296f2a752e5@suse.com>
On 11/24/20 7:42 AM, Nikolay Borisov wrote:
>
>
> On 13.11.20 г. 18:23 ч., Josef Bacik wrote:
>> btrfs_record_root_in_trans will return errors in the future, so handle
>> the error properly in create_subvol.
>>
>> Signed-off-by: Josef Bacik <josef@toxicpanda.com>
>> ---
>> fs/btrfs/ioctl.c | 6 +++++-
>> 1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
>> index a5dc7cc5d705..da9026a487d2 100644
>> --- a/fs/btrfs/ioctl.c
>> +++ b/fs/btrfs/ioctl.c
>> @@ -702,7 +702,11 @@ static noinline int create_subvol(struct inode *dir,
>> /* Freeing will be done in btrfs_put_root() of new_root */
>> anon_dev = 0;
>>
>> - btrfs_record_root_in_trans(trans, new_root);
>> + ret = btrfs_record_root_in_trans(trans, new_root);
>> + if (ret) {
>> + btrfs_abort_transaction(trans, ret);
>> + goto fail;
>> + }
>
> I think create_subvol is broken w.r.t handling of anon_bdev when an
> error occurs since it's not being freed in the "goto fail" case.
>
The comment above addresses this, it'll be cleared at btrfs_put_root() time.
Thanks,
Josef
next prev parent reply other threads:[~2020-12-02 18:12 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 16:22 [PATCH v2 00/42] Cleanup error handling in relocation Josef Bacik
2020-11-13 16:22 ` [PATCH v2 01/42] btrfs: allow error injection for btrfs_search_slot and btrfs_cow_block Josef Bacik
2020-11-13 16:22 ` [PATCH v2 02/42] btrfs: fix lockdep splat in btrfs_recover_relocation Josef Bacik
2020-11-24 10:44 ` Nikolay Borisov
2020-11-24 16:56 ` Filipe Manana
2020-11-24 18:44 ` Josef Bacik
2020-11-13 16:22 ` [PATCH v2 03/42] btrfs: convert some BUG_ON()'s to ASSERT()'s in do_relocation Josef Bacik
2020-11-13 16:22 ` [PATCH v2 04/42] btrfs: convert BUG_ON()'s in relocate_tree_block Josef Bacik
2020-11-13 16:22 ` [PATCH v2 05/42] btrfs: return an error from btrfs_record_root_in_trans Josef Bacik
2020-11-24 11:02 ` Nikolay Borisov
2020-11-24 12:53 ` Nikolay Borisov
2020-11-13 16:22 ` [PATCH v2 06/42] btrfs: handle errors from select_reloc_root() Josef Bacik
2020-11-13 16:22 ` [PATCH v2 07/42] btrfs: convert BUG_ON()'s in select_reloc_root() to proper errors Josef Bacik
2020-11-13 16:22 ` [PATCH v2 08/42] btrfs: check record_root_in_trans related failures in select_reloc_root Josef Bacik
2020-11-13 16:22 ` [PATCH v2 09/42] btrfs: do proper error handling in record_reloc_root_in_trans Josef Bacik
2020-11-13 16:23 ` [PATCH v2 10/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename_exchange Josef Bacik
2020-11-13 16:23 ` [PATCH v2 11/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename Josef Bacik
2020-11-13 16:23 ` [PATCH v2 12/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_delete_subvolume Josef Bacik
2020-11-13 16:23 ` [PATCH v2 13/42] btrfs: handle btrfs_record_root_in_trans failure in btrfs_recover_log_trees Josef Bacik
2020-11-24 12:37 ` Nikolay Borisov
2020-12-02 18:05 ` Josef Bacik
2020-11-13 16:23 ` [PATCH v2 14/42] btrfs: handle btrfs_record_root_in_trans failure in create_subvol Josef Bacik
2020-11-24 12:42 ` Nikolay Borisov
2020-12-02 18:12 ` Josef Bacik [this message]
2020-11-13 16:23 ` [PATCH v2 15/42] btrfs: btrfs: handle btrfs_record_root_in_trans failure in relocate_tree_block Josef Bacik
2020-11-13 16:23 ` [PATCH v2 16/42] btrfs: handle btrfs_record_root_in_trans failure in start_transaction Josef Bacik
2020-11-13 16:23 ` [PATCH v2 17/42] btrfs: handle record_root_in_trans failure in qgroup_account_snapshot Josef Bacik
2020-11-13 16:23 ` [PATCH v2 18/42] btrfs: handle record_root_in_trans failure in btrfs_record_root_in_trans Josef Bacik
2020-11-13 16:23 ` [PATCH v2 19/42] btrfs: handle record_root_in_trans failure in create_pending_snapshot Josef Bacik
2020-11-13 16:23 ` [PATCH v2 20/42] btrfs: do not panic in __add_reloc_root Josef Bacik
2020-11-24 12:51 ` Nikolay Borisov
2020-11-13 16:23 ` [PATCH v2 21/42] btrfs: have proper error handling in btrfs_init_reloc_root Josef Bacik
2020-11-13 16:23 ` [PATCH v2 22/42] btrfs: do proper error handling in create_reloc_root Josef Bacik
2020-11-13 16:23 ` [PATCH v2 23/42] btrfs: handle btrfs_update_reloc_root failure in commit_fs_roots Josef Bacik
2020-11-13 16:23 ` [PATCH v2 24/42] btrfs: change insert_dirty_subvol to return errors Josef Bacik
2020-11-13 16:23 ` [PATCH v2 25/42] btrfs: handle btrfs_update_reloc_root failure in insert_dirty_subvol Josef Bacik
2020-11-13 16:23 ` [PATCH v2 26/42] btrfs: handle btrfs_update_reloc_root failure in prepare_to_merge Josef Bacik
2020-11-13 16:23 ` [PATCH v2 27/42] btrfs: do proper error handling in btrfs_update_reloc_root Josef Bacik
2020-11-13 16:23 ` [PATCH v2 28/42] btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s Josef Bacik
2020-11-13 16:23 ` [PATCH v2 29/42] btrfs: handle initial btrfs_cow_block error in replace_path Josef Bacik
2020-11-13 16:23 ` [PATCH v2 30/42] btrfs: handle the loop " Josef Bacik
2020-11-13 16:23 ` [PATCH v2 31/42] btrfs: handle btrfs_search_slot failure " Josef Bacik
2020-11-13 16:23 ` [PATCH v2 32/42] btrfs: handle errors in reference count manipulation " Josef Bacik
2020-11-13 16:23 ` [PATCH v2 33/42] btrfs: handle extent reference errors in do_relocation Josef Bacik
2020-11-24 13:15 ` Nikolay Borisov
2020-11-13 16:23 ` [PATCH v2 34/42] btrfs: check for BTRFS_BLOCK_FLAG_FULL_BACKREF being set improperly Josef Bacik
2020-11-13 16:23 ` [PATCH v2 35/42] btrfs: remove the extent item sanity checks in relocate_block_group Josef Bacik
2020-11-13 16:23 ` [PATCH v2 36/42] btrfs: do proper error handling in create_reloc_inode Josef Bacik
2020-11-13 16:23 ` [PATCH v2 37/42] btrfs: handle __add_reloc_root failure in btrfs_recover_relocation Josef Bacik
2020-11-24 13:26 ` Nikolay Borisov
2020-12-02 18:29 ` Josef Bacik
2020-11-13 16:23 ` [PATCH v2 38/42] btrfs: handle __add_reloc_root failure in btrfs_reloc_post_snapshot Josef Bacik
2020-11-13 16:23 ` [PATCH v2 39/42] btrfs: cleanup error handling in prepare_to_merge Josef Bacik
2020-11-13 16:23 ` [PATCH v2 40/42] btrfs: handle extent corruption with select_one_root properly Josef Bacik
2020-11-13 16:23 ` [PATCH v2 41/42] btrfs: do proper error handling in merge_reloc_roots Josef Bacik
2020-11-13 16:23 ` [PATCH v2 42/42] btrfs: check return value of btrfs_commit_transaction in relocation Josef Bacik
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