| Message ID | 1391935590-12264-16-git-send-email-kwolf@redhat.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/block.c b/block.c index c1d1f74..a027823 100644 --- a/block.c +++ b/block.c @@ -3134,6 +3134,8 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs, waited = wait_serialising_requests(req); assert(!waited || !req->serialising); + assert(req->overlap_offset <= offset); + assert(offset + bytes <= req->overlap_offset + req->overlap_bytes); ret = notifier_with_return_list_notify(&bs->before_write_notifiers, req);
This adds assertions that the request that we actually end up passing to the block driver (which includes RMW data and has therefore potentially been rounded to alignment boundaries) is fully covered by the overlap_{offset,size} fields of the associated BdrvTrackedRequest. Suggested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> --- block.c | 2 ++ 1 file changed, 2 insertions(+)