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Btrfs: don't delete fs_roots until after we cleanup the transaction

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We get a use after free if we had a transaction to cleanup since there could be
delayed inodes which refer to their respective fs_root.  Thanks

Reported-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Josef Bacik 2013-06-06 10:29:40 -04:00 committed by Chris Mason
parent c5cb6a0573
commit 7b5ff90ed0
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/disk-io.c
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@ -2859,8 +2859,8 @@ fail_qgroup:
btrfs_free_qgroup_config(fs_info);
fail_trans_kthread:
kthread_stop(fs_info->transaction_kthread);
del_fs_roots(fs_info);
btrfs_cleanup_transaction(fs_info->tree_root);
del_fs_roots(fs_info);
fail_cleaner:
kthread_stop(fs_info->cleaner_kthread);