Re: [Y2038] [PATCH v2 1/6] ext4: sysfs: print ext4_super_block fields as little-endian

On Wed, Jul 11, 2018 at 11:14:09AM +0200, Arnd Bergmann wrote:

While working on extended rand for last_error/first_error timestamps, I noticed that the endianess is wrong, we access the little-endian fields in struct ext4_super_block as native-endian when we print them.

This adds a special case in ext4_attr_show() and ext4_attr_store() to byteswap the superblock fields if needed.

In older kernels, this code was part of super.c, it got moved to sysfs.c in linux-4.4.

Cc: stable@vger.kernel.org Fixes: 52c198c6820f ("ext4: add sysfs entry showing whether the fs contains errors") Reviewed-by: Andreas Dilger adilger@dilger.ca Signed-off-by: Arnd Bergmann arnd@arndb.de

Applied, thanks.

- Ted