[PATCH AUTOSEL 5.15 22/46] scsi: lpfc: Fix possible memory leak when failing to issue CMF WQE

Sasha Levin
2022-08-14T15:42:52Z

From: James Smart <jsmart2021@gmail.com>

[ Upstream commit 2f67dc7970bce3529edce93a0a14234d88b3fcd5 ]

There is no corresponding free routine if lpfc_sli4_issue_wqe fails to
issue the CMF WQE in lpfc_issue_cmf_sync_wqe.

If ret_val is non-zero, then free the iocbq request structure.

Link: https://lore.kernel.org/r/20220701211425.2708-6-jsmart2021@gmail.com
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/lpfc/lpfc_sli.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index d8d26cde70b6..d5a47fdf8650 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2007,10 +2007,12 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)

sync_buf->iocb_flag |= LPFC_IO_CMF;
ret_val = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], sync_buf);
- if (ret_val)
+ if (ret_val) {
lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
"6214 Cannot issue CMF_SYNC_WQE: x%x\n",
ret_val);
+ __lpfc_sli_release_iocbq(phba, sync_buf);
+ }
out_unlock:
spin_unlock_irqrestore(&phba->hbalock, iflags);
return ret_val;
--
2.35.1