From 78e1d2009f1c539a23f470728e530a3ce1d527e6 Mon Sep 17 00:00:00 2001 From: James Smart Date: Thu, 1 Jun 2017 21:07:09 -0700 Subject: [PATCH] scsi: lpfc: Fix defects reported by Coverity Scan Addressed the following reported defects: ** CID 1411552: Control flow issues (MISSING_BREAK) /drivers/scsi/lpfc/lpfc_sli.c: 13259 in lpfc_sli4_nvmet_handle_rcqe() ** CID 1411553: Memory - illegal accesses (OVERRUN) /drivers/scsi/lpfc/lpfc_sli.c: 16218 in lpfc_fc_frame_check() ** CID 1411553: Memory - illegal accesses (OVERRUN) Overrunning array "lpfc_rctl_names" of 202 8-byte elements at element index 244 (byte offset 1952) using index "fc_hdr->fh_r_ctl" (which evaluates to 244). ** CID 1411554: Null pointer dereferences (REVERSE_INULL) /drivers/scsi/lpfc/lpfc_nvmet.c: 2131 in lpfc_nvmet_unsol_fcp_abort_cmp() ** CID 1411555: Memory - illegal accesses (UNINIT) /drivers/scsi/lpfc/lpfc_nvmet.c: 180 in lpfc_nvmet_ctxbuf_post() Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_nvmet.c | 10 ++++------ drivers/scsi/lpfc/lpfc_sli.c | 24 +++++++++--------------- 2 files changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c index e82b9dc733a1..dba1bd216be3 100644 --- a/drivers/scsi/lpfc/lpfc_nvmet.c +++ b/drivers/scsi/lpfc/lpfc_nvmet.c @@ -170,7 +170,6 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) struct lpfc_nvmet_tgtport *tgtp; struct fc_frame_header *fc_hdr; struct rqb_dmabuf *nvmebuf; - struct lpfc_dmabuf *hbufp; uint32_t *payload; uint32_t size, oxid, sid, rc; unsigned long iflag; @@ -191,7 +190,6 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); if (phba->sli4_hba.nvmet_io_wait_cnt) { - hbufp = &nvmebuf->hbuf; list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list, nvmebuf, struct rqb_dmabuf, hbuf.list); @@ -2164,10 +2162,6 @@ lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, status = bf_get(lpfc_wcqe_c_status, wcqe); result = wcqe->parameter; - tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; - if (ctxp->flag & LPFC_NVMET_ABORT_OP) - atomic_inc(&tgtp->xmt_fcp_abort_cmpl); - if (!ctxp) { /* if context is clear, related io alrady complete */ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, @@ -2177,6 +2171,10 @@ lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, return; } + tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; + if (ctxp->flag & LPFC_NVMET_ABORT_OP) + atomic_inc(&tgtp->xmt_fcp_abort_cmpl); + /* Sanity check */ if (ctxp->state != LPFC_NVMET_STE_ABORT) { lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index fb4c708ae747..f60c9e3e37d7 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -13267,6 +13267,7 @@ lpfc_sli4_nvmet_handle_rcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, case FC_STATUS_RQ_BUF_LEN_EXCEEDED: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "6126 Receive Frame Truncated!!\n"); + /* Drop thru */ case FC_STATUS_RQ_SUCCESS: lpfc_sli4_rq_release(hrq, drq); spin_lock_irqsave(&phba->hbalock, iflags); @@ -16137,9 +16138,6 @@ lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, return rc; } -static char *lpfc_rctl_names[] = FC_RCTL_NAMES_INIT; -static char *lpfc_type_names[] = FC_TYPE_NAMES_INIT; - /** * lpfc_fc_frame_check - Check that this frame is a valid frame to handle * @phba: pointer to lpfc_hba struct that the frame was received on @@ -16214,22 +16212,18 @@ lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr) } lpfc_printf_log(phba, KERN_INFO, LOG_ELS, - "2538 Received frame rctl:%s (x%x), type:%s (x%x), " + "2538 Received frame rctl:x%x, type:x%x, " "frame Data:%08x %08x %08x %08x %08x %08x %08x\n", - (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS) ? "MDS Diags" : - lpfc_rctl_names[fc_hdr->fh_r_ctl], fc_hdr->fh_r_ctl, - (fc_hdr->fh_type == FC_TYPE_VENDOR_UNIQUE) ? - "Vendor Unique" : lpfc_type_names[fc_hdr->fh_type], - fc_hdr->fh_type, be32_to_cpu(header[0]), - be32_to_cpu(header[1]), be32_to_cpu(header[2]), - be32_to_cpu(header[3]), be32_to_cpu(header[4]), - be32_to_cpu(header[5]), be32_to_cpu(header[6])); + fc_hdr->fh_r_ctl, fc_hdr->fh_type, + be32_to_cpu(header[0]), be32_to_cpu(header[1]), + be32_to_cpu(header[2]), be32_to_cpu(header[3]), + be32_to_cpu(header[4]), be32_to_cpu(header[5]), + be32_to_cpu(header[6])); return 0; drop: lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, - "2539 Dropped frame rctl:%s type:%s\n", - lpfc_rctl_names[fc_hdr->fh_r_ctl], - lpfc_type_names[fc_hdr->fh_type]); + "2539 Dropped frame rctl:x%x type:x%x\n", + fc_hdr->fh_r_ctl, fc_hdr->fh_type); return 1; } -- 2.39.5