From 0c6df59061b23c7a951836d23977be34e896d3da Mon Sep 17 00:00:00 2001
From: Quinn Tran <qutran@marvell.com>
Date: Fri, 26 Jul 2019 09:07:28 -0700
Subject: [PATCH] scsi: qla2xxx: Fix abort timeout race condition.
If an abort times out, the Abort IOCB completion and Abort timer can race
against each other. This patch provides unique error code for timer path to
allow proper cleanup.
[mkp: typo]
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 18 ++++++++++++++++--
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index bad2b12604f1b..d3d624d43ec30 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -4628,6 +4628,7 @@ struct secure_flash_update_block_pk {
#define QLA_SUSPENDED 0x106
#define QLA_BUSY 0x107
#define QLA_ALREADY_REGISTERED 0x109
+#define QLA_OS_TIMER_EXPIRED 0x10a
#define NVRAM_DELAY() udelay(10)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 4059655639d90..68d7496a8aff5 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -99,9 +99,22 @@ static void qla24xx_abort_iocb_timeout(void *data)
{
srb_t *sp = data;
struct srb_iocb *abt = &sp->u.iocb_cmd;
+ struct qla_qpair *qpair = sp->qpair;
+ u32 handle;
+ unsigned long flags;
+
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
+ for (handle = 1; handle < qpair->req->num_outstanding_cmds; handle++) {
+ /* removing the abort */
+ if (qpair->req->outstanding_cmds[handle] == sp) {
+ qpair->req->outstanding_cmds[handle] = NULL;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
abt->u.abt.comp_status = CS_TIMEOUT;
- sp->done(sp, QLA_FUNCTION_TIMEOUT);
+ sp->done(sp, QLA_OS_TIMER_EXPIRED);
}
static void qla24xx_abort_sp_done(void *ptr, int res)
@@ -109,7 +122,8 @@ static void qla24xx_abort_sp_done(void *ptr, int res)
srb_t *sp = ptr;
struct srb_iocb *abt = &sp->u.iocb_cmd;
- if (del_timer(&sp->u.iocb_cmd.timer)) {
+ if ((res == QLA_OS_TIMER_EXPIRED) ||
+ del_timer(&sp->u.iocb_cmd.timer)) {
if (sp->flags & SRB_WAKEUP_ON_COMP)
complete(&abt->u.abt.comp);
else
--
2.30.2