Re: [PATCH v3] scsi: core: Fix shost->cmd_per_lun calculation in scsi_add_host_with_dma()

On 08/10/2021 05:35, Dexuan Cui wrote:

After commit ea2f0f77538c, a 416-CPU VM running on Hyper-V hangs during boot because the hv_storvsc driver sets scsi_driver.can_queue to an "int" value that exceeds SHRT_MAX, and hence scsi_add_host_with_dma() sets shost->cmd_per_lun to a negative "short" value.

Use min_t(int, ...) to fix the issue.

Fixes: ea2f0f77538c ("scsi: core: Cap scsi_host cmd_per_lun at can_queue") Cc:stable@vger.kernel.org Signed-off-by: Dexuan Cuidecui@microsoft.com Reviewed-by: Haiyang Zhanghaiyangz@microsoft.com Reviewed-by: Ming Leiming.lei@redhat.com

Reviewed-by: John Garry john.garry@huawei.com

thanks