[PATCH 5.10 71/74] ext4: fix incorrect type issue during replay_del_range

Greg Kroah-Hartman
2022-02-07T11:39:41Z

From: Xin Yin <yinxin.x@bytedance.com>

commit 8fca8a2b0a822f7936130af7299d2fd7f0a66714 upstream.

should not use fast commit log data directly, add le32_to_cpu().

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 0b5b5a62b945 ("ext4: use ext4_ext_remove_space() for fast commit replay delete range")
Cc: stable@kernel.org
Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20220126063146.2302-1-yinxin.x@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/fast_commit.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -1771,8 +1771,9 @@ ext4_fc_replay_del_range(struct super_bl
}

down_write(&EXT4_I(inode)->i_data_sem);
- ret = ext4_ext_remove_space(inode, lrange.fc_lblk,
- lrange.fc_lblk + lrange.fc_len - 1);
+ ret = ext4_ext_remove_space(inode, le32_to_cpu(lrange.fc_lblk),
+ le32_to_cpu(lrange.fc_lblk) +
+ le32_to_cpu(lrange.fc_len) - 1);
up_write(&EXT4_I(inode)->i_data_sem);
if (ret)
goto out;