--- drivers/scsi/megaraid/megaraid_sas.c

+++ drivers/scsi/megaraid/megaraid_sas.c

@@ -3072,6 +3072,9 @@ megasas_mgmt_fw_ioctl(struct megasas_ins

* For each user buffer, create a mirror buffer and copy in

*/

for (i = 0; i < ioc->sge_count; i++) {

+ if (!ioc->sgl[i].iov_len)

+ continue;

+

kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,

ioc->sgl[i].iov_len,

&buf_handle, GFP_KERNEL);