btrfs: fix ordered extent split error handling in btrfs_dio_submit_io

When the call to btrfs_extract_ordered_extent in btrfs_dio_submit_io
fails to allocate memory for a new ordered_extent, it calls into the
btrfs_dio_end_io for error handling.  btrfs_dio_end_io then assumes that
bbio->ordered is set because it is supposed to be at this point, except
for this error handling corner case.  Try to not overload the
btrfs_dio_end_io with error handling of a bio in a non-canonical state,
and instead call btrfs_finish_ordered_extent and iomap_dio_bio_end_io
directly for this error case.

Reported-by: syzbot <[email protected]>
Fixes: b41b6f6937dc ("btrfs: use btrfs_finish_ordered_extent to complete direct writes")
Reviewed-by: Josef Bacik <[email protected]>
Tested-by: syzbot <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: David Sterba <[email protected]>

0 files changed, 0 insertions, 0 deletions