From: Joseph Qi joseph.qi@linux.alibaba.com
stable inclusion from linux-4.19.158 commit 9d9ad220bb414da6e8b6ae0e35f9e4db976a97ef
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commit 7067b2619017d51e71686ca9756b454de0e5826a upstream.
It takes xattr_sem to check inline data again but without unlock it in case not have. So unlock it before return.
Fixes: aef1c8513c1f ("ext4: let ext4_truncate handle inline data correctly") Reported-by: Dan Carpenter dan.carpenter@oracle.com Cc: Tao Ma boyu.mt@taobao.com Signed-off-by: Joseph Qi joseph.qi@linux.alibaba.com Reviewed-by: Andreas Dilger adilger@dilger.ca Link: https://lore.kernel.org/r/1604370542-124630-1-git-send-email-joseph.qi@linux... Signed-off-by: Theodore Ts'o tytso@mit.edu Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: Cheng Jian cj.chengjian@huawei.com --- fs/ext4/inline.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 56f6e1782d5f..32b266c478f9 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1921,6 +1921,7 @@ int ext4_inline_data_truncate(struct inode *inode, int *has_inline)
ext4_write_lock_xattr(inode, &no_expand); if (!ext4_has_inline_data(inode)) { + ext4_write_unlock_xattr(inode, &no_expand); *has_inline = 0; ext4_journal_stop(handle); return 0;