From b873d1037283b5082863b97443dd25e592c40684 Mon Sep 17 00:00:00 2001 From: James Smart Date: Sun, 11 Sep 2022 15:14:55 -0700 Subject: [PATCH] scsi: lpfc: Fix mbuf pool resource detected as busy at driver unload In a situation where the node state changes while a REG_LOGIN is in progress, the LPFC_MBOXQ_t structure is cleared and reused for an UNREG_LOGIN command to release RPI resources without first freeing the mbuf pool resource allocated for REG_LOGIN. Release mbuf pool resource prior to repurposing of the mailbox command structure from REG_LOGIN to UNREG_LOGIN. Link: https://lore.kernel.org/r/20220911221505.117655-4-jsmart2021@gmail.com Co-developed-by: Justin Tee Signed-off-by: Justin Tee Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_sli.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 33373b20f819..002794975cd9 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -2856,6 +2856,7 @@ void lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_vport *vport = pmb->vport; + struct lpfc_dmabuf *mp; struct lpfc_nodelist *ndlp; struct Scsi_Host *shost; uint16_t rpi, vpi; @@ -2868,6 +2869,12 @@ lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) if (!(phba->pport->load_flag & FC_UNLOADING) && pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 && !pmb->u.mb.mbxStatus) { + mp = (struct lpfc_dmabuf *)pmb->ctx_buf; + if (mp) { + pmb->ctx_buf = NULL; + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } rpi = pmb->u.mb.un.varWords[0]; vpi = pmb->u.mb.un.varRegLogin.vpi; if (phba->sli_rev == LPFC_SLI_REV4)