linux-kernel - [PATCH 5.15 671/779] scsi: qla2xxx: Fix imbalance vha->vref

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Date:   Mon, 15 Aug 2022 20:05:15 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Himanshu Madhani <himanshu.madhani@...cle.com>,
        Quinn Tran <qutran@...vell.com>,
        Nilesh Javali <njavali@...vell.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 5.15 671/779] scsi: qla2xxx: Fix imbalance vha->vref_count

From: Quinn Tran <qutran@...vell.com>

commit 63fa7f2644b4b48e1913af33092c044bf48e9321 upstream.

vref_count took an extra decrement in the task management path.  Add an
extra ref count to compensate the imbalance.

Link: https://lore.kernel.org/r/20220713052045.10683-7-njavali@marvell.com
Cc: stable@...r.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@...cle.com>
Signed-off-by: Quinn Tran <qutran@...vell.com>
Signed-off-by: Nilesh Javali <njavali@...vell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/scsi/qla2xxx/qla_init.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -161,6 +161,7 @@ int qla24xx_async_abort_cmd(srb_t *cmd_s
 	struct srb_iocb *abt_iocb;
 	srb_t *sp;
 	int rval = QLA_FUNCTION_FAILED;
+	uint8_t bail;
 
 	/* ref: INIT for ABTS command */
 	sp = qla2xxx_get_qpair_sp(cmd_sp->vha, cmd_sp->qpair, cmd_sp->fcport,
@@ -168,6 +169,7 @@ int qla24xx_async_abort_cmd(srb_t *cmd_s
 	if (!sp)
 		return QLA_MEMORY_ALLOC_FAILED;
 
+	QLA_VHA_MARK_BUSY(vha, bail);
 	abt_iocb = &sp->u.iocb_cmd;
 	sp->type = SRB_ABT_CMD;
 	sp->name = "abort";
@@ -2009,12 +2011,14 @@ qla2x00_async_tm_cmd(fc_port_t *fcport,
 	struct srb_iocb *tm_iocb;
 	srb_t *sp;
 	int rval = QLA_FUNCTION_FAILED;
+	uint8_t bail;
 
 	/* ref: INIT */
 	sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
 	if (!sp)
 		goto done;
 
+	QLA_VHA_MARK_BUSY(vha, bail);
 	sp->type = SRB_TM_CMD;
 	sp->name = "tmf";
 	qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha),