From: James Smart Date: Tue, 12 Apr 2022 22:19:46 +0000 (-0700) Subject: scsi: lpfc: Zero SLI4 fcp_cmnd buffer's fcpCntl0 field X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=787d0580ca181d254f4dfd8b281cbea31120bde3;p=linux.git scsi: lpfc: Zero SLI4 fcp_cmnd buffer's fcpCntl0 field It's possible that the fcpCntl0 reserved field is allocated non-zero. For certain target storage arrays this could cause problems expecting reserved fields to be all zero. SLI3 path already allocates fcp_cmnd buffer with dma_pool_zalloc() in lpfc_new_scsi_buf_s3. The fcpCntl0 field itself is never proactively set throughout the SCSI I/O path. Thus, we only change the SLI4 fcp_cmnd buffer allocation to dma_pool_zalloc. Link: https://lore.kernel.org/r/20220412222008.126521-5-jsmart2021@gmail.com Co-developed-by: Justin Tee Signed-off-by: Justin Tee Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 7c86271f05fdc..28d8ded9e7e15 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -22117,7 +22117,7 @@ lpfc_get_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba, return NULL; } - tmp->fcp_cmnd = dma_pool_alloc(phba->lpfc_cmd_rsp_buf_pool, + tmp->fcp_cmnd = dma_pool_zalloc(phba->lpfc_cmd_rsp_buf_pool, GFP_ATOMIC, &tmp->fcp_cmd_rsp_dma_handle);