diff options
| author | James Smart <jsmart2021@gmail.com> | 2021-04-11 18:31:12 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-04-13 01:39:13 -0400 |
| commit | 078c68b87a717b9fcd8e0f2109f73456fbc55490 (patch) | |
| tree | 4f28f167158930f1b557e0a436c8bb96cff4aa94 /drivers/scsi/lpfc/lpfc_nportdisc.c | |
| parent | 8350e19658c1632874888971052a5ace92dae7c5 (diff) | |
scsi: lpfc: Fix rmmod crash due to bad ring pointers to abort_iotag
Rmmod on SLI-4 adapters is sometimes hitting a bad ptr dereference in
lpfc_els_free_iocb().
A prior patch refactored the lpfc_sli_abort_iocb() routine. One of the
changes was to convert from building/sending an abort within the routine to
using a common routine. The reworked routine passes, without modification,
the pring ptr to the new common routine. The older routine had logic to
check SLI-3 vs SLI-4 and adapt the pring ptr if necessary as callers were
passing SLI-3 pointers even when not on an SLI-4 adapter. The new routine
is missing this check and adapt, so the SLI-3 ring pointers are being used
in SLI-4 paths.
Fix by cleaning up the calling routines. In review, there is no need to
pass the ring ptr argument to abort_iocb at all. The routine can look at
the adapter type itself and reference the proper ring.
Link: https://lore.kernel.org/r/20210412013127.2387-2-jsmart2021@gmail.com
Fixes: db7531d2b377 ("scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers")
Cc: <stable@vger.kernel.org> # v5.11+
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nportdisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nportdisc.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c index 9aa907ce4c63..8472c5e716db 100644 --- a/drivers/scsi/lpfc/lpfc_nportdisc.c +++ b/drivers/scsi/lpfc/lpfc_nportdisc.c @@ -2559,12 +2559,10 @@ static uint32_t lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) { - struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg; /* flush the target */ - lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING], - ndlp->nlp_sid, 0, LPFC_CTX_TGT); + lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); /* Treat like rcv logo */ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO); |