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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Justin Tee <justin.tee@broadcom.com>,
        James Smart <jsmart2021@gmail.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 183/244] scsi: lpfc: Fix possible memory leak when failing to issue CMF WQE
Date:   Tue, 23 Aug 2022 10:25:42 +0200
Message-Id: <20220823080105.446445858@linuxfoundation.org>
In-Reply-To: <20220823080059.091088642@linuxfoundation.org>
References: <20220823080059.091088642@linuxfoundation.org>
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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 fb69416c9623..f594a006d04c 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2012,10 +2012,12 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
 
 	sync_buf->cmd_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