From: Jan Kara jack@suse.cz
commit 8994d11395f8165b3deca1971946f549f0822630 upstream.
When expanding inode space in ext4_expand_extra_isize_ea() we may need to allocate external xattr block. If quota is not initialized for the inode, the block allocation will not be accounted into quota usage. Make sure the quota is initialized before we try to expand inode space.
Reported-by: Pengfei Xu pengfei.xu@intel.com Link: https://lore.kernel.org/all/Y5BT+k6xWqthZc1P@xpf.sh.intel.com Signed-off-by: Jan Kara jack@suse.cz Cc: stable@kernel.org Link: https://lore.kernel.org/r/20221207115937.26601-2-jack@suse.cz Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ext4/inode.c | 8 ++++++++ 1 file changed, 8 insertions(+)
--- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5875,6 +5875,14 @@ static int __ext4_expand_extra_isize(str return 0; }
+ /* + * We may need to allocate external xattr block so we need quotas + * initialized. Here we can be called with various locks held so we + * cannot affort to initialize quotas ourselves. So just bail. + */ + if (dquot_initialize_needed(inode)) + return -EAGAIN; + /* try to expand with EAs present */ error = ext4_expand_extra_isize_ea(inode, new_extra_isize, raw_inode, handle);