diff options
| author | James Smart <jsmart2021@gmail.com> | 2018-04-09 23:24:31 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-19 01:34:06 +0200 |
| commit | 66a85155d4851fe10e7c08c386507d92b45c0ec1 (patch) | |
| tree | aeab3bfd6d80fba580e0c85ac9d7b004a76ba7a0 /drivers | |
| parent | scsi: lpfc: Fix nvme remoteport registration race conditions (diff) | |
| download | linux-66a85155d4851fe10e7c08c386507d92b45c0ec1.tar.xz linux-66a85155d4851fe10e7c08c386507d92b45c0ec1.zip | |
scsi: lpfc: Fix NULL pointer reference when resetting adapter
Points referencing local port structures didn't accommodate cases where
the localport may not be registered yet.
Add NULL pointer checks to logic.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvme.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index a0257478b63c..9e0345697e1b 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -364,16 +364,18 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, struct lpfc_dmabuf *buf_ptr; struct lpfc_nodelist *ndlp; - lport = (struct lpfc_nvme_lport *)vport->localport->private; pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2; status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; - if (lport) { - atomic_inc(&lport->fc4NvmeLsCmpls); - if (status) { - if (bf_get(lpfc_wcqe_c_xb, wcqe)) - atomic_inc(&lport->cmpl_ls_xb); - atomic_inc(&lport->cmpl_ls_err); + if (vport->localport) { + lport = (struct lpfc_nvme_lport *)vport->localport->private; + if (lport) { + atomic_inc(&lport->fc4NvmeLsCmpls); + if (status) { + if (bf_get(lpfc_wcqe_c_xb, wcqe)) + atomic_inc(&lport->cmpl_ls_xb); + atomic_inc(&lport->cmpl_ls_err); + } } } @@ -980,15 +982,17 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, rport = lpfc_ncmd->nrport; status = bf_get(lpfc_wcqe_c_status, wcqe); - lport = (struct lpfc_nvme_lport *)vport->localport->private; - if (lport) { - idx = lpfc_ncmd->cur_iocbq.hba_wqidx; - cstat = &lport->cstat[idx]; - atomic_inc(&cstat->fc4NvmeIoCmpls); - if (status) { - if (bf_get(lpfc_wcqe_c_xb, wcqe)) - atomic_inc(&lport->cmpl_fcp_xb); - atomic_inc(&lport->cmpl_fcp_err); + if (vport->localport) { + lport = (struct lpfc_nvme_lport *)vport->localport->private; + if (lport) { + idx = lpfc_ncmd->cur_iocbq.hba_wqidx; + cstat = &lport->cstat[idx]; + atomic_inc(&cstat->fc4NvmeIoCmpls); + if (status) { + if (bf_get(lpfc_wcqe_c_xb, wcqe)) + atomic_inc(&lport->cmpl_fcp_xb); + atomic_inc(&lport->cmpl_fcp_err); + } } } |