On Wed, Oct 09, 2019 at 01:25:26PM -0600, Logan Gunthorpe wrote: > With passthru, the data_len is no longer guaranteed to be set > for all requests. Therefore, we should not check for it to be > non-zero. Instead check if the SGL length is zero and map > when appropriate. > > None of the other transports check data_len which is verified > in core code. > > Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> > Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx> I think the issue here is deeper. Yes, this patch is correct, but nvmet-tcp has another use of req.data_len in nvmet_tcp_handle_req_failure, which looks completely bogus. Please try to audit that as well and send out fixes to the list separately from this series, as both look like potentially serious bugs.
