On Sonntag, 28. August 2016 22:42:38 CEST you wrote:

Make sure the the extra_isize field (offset 128) is initialized to 0 to mark any extra data as invalid.

Signed-off-by: Stefan Brüns stefan.bruens@rwth-aachen.de

fs/ext4/ext4_write.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-)

v3: Patch added to series

diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c index 81a750b..38fbf68 100644 --- a/fs/ext4/ext4_write.c +++ b/fs/ext4/ext4_write.c @@ -454,7 +454,7 @@ static int ext4fs_delete_file(int inodeno) node_inode->data = ext4fs_root; node_inode->ino = inodeno; node_inode->inode_read = 0;

• memcpy(&(node_inode->inode), &inode, sizeof(struct ext2_inode));
  

• memcpy(&(node_inode->inode), &inode, fs->inodesz);
  

This line is actually broken, node_inode->inode is sizeof(struct ext2_inode), i.e 128 bytes. It is responsible for the crash Thomas reported.

Kind regards,

Stefan