On Fri, Jun 07, 2024 at 10:37:58AM +0800, Chengming Zhou wrote: > Yeah, right, it seems LVM may create this special request that only has > PREFLUSH | POSTFLUSH without any DATA, goes into the flush state machine. > Then, cause the request double list_add_tail() without list_del_init(). > I don't know the reason behind it, but well, it's allowable in the current > flush code. PREFLUSH | POSTFLUSH is a weird invalid format. We'll need to fix this in dm, and probably also catch it in the block layer submission path.
