linux-kernel - [RFC][PATCH v3 25/33] timers: scsi: Use timer_shutdown_sync() and timer

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Message-ID: <20221104054916.464295277@goodmis.org>
Date:   Fri, 04 Nov 2022 01:41:18 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nilesh Javali <njavali@...vell.com>,
        GR-QLogic-Storage-Upstream@...vell.com,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org
Subject: [RFC][PATCH v3 25/33] timers: scsi: Use timer_shutdown_sync() and timer_shutdown() before
 freeing timer

From: "Steven Rostedt (Google)" <rostedt@...dmis.org>

Before a timer is freed, timer_shutdown_sync() must be called, or
timer_shutdown() if it's already known that the timer is disabled.

Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/

Cc: Nilesh Javali <njavali@...vell.com>
Cc: GR-QLogic-Storage-Upstream@...vell.com
Cc: "James E.J. Bottomley" <jejb@...ux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: linux-scsi@...r.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 drivers/scsi/qla2xxx/qla_edif.c | 4 ++--
 drivers/scsi/scsi_lib.c         | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index 00ccc41cef14..7f3a3c8673b5 100644
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -416,7 +416,7 @@ static void __qla2x00_release_all_sadb(struct scsi_qla_host *vha,
 				 */
 				if (edif_entry->delete_sa_index !=
 						INVALID_EDIF_SA_INDEX) {
-					del_timer(&edif_entry->timer);
+					timer_shutdown_sync(&edif_entry->timer);
 
 					/* build and send the aen */
 					fcport->edif.rx_sa_set = 1;
@@ -2799,7 +2799,7 @@ qla28xx_sa_update_iocb_entry(scsi_qla_host_t *v, struct req_que *req,
 			    "%s: removing edif_entry %p, new sa_index: 0x%x\n",
 			    __func__, edif_entry, pkt->sa_index);
 			qla_edif_list_delete_sa_index(sp->fcport, edif_entry);
-			del_timer(&edif_entry->timer);
+			timer_shutdown_sync(&edif_entry->timer);
 
 			ql_dbg(ql_dbg_edif, vha, 0x5033,
 			    "%s: releasing edif_entry %p, new sa_index: 0x%x\n",
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 8b89fab7c420..e6cd1efb9eca 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -558,6 +558,7 @@ static bool scsi_end_request(struct request *req, blk_status_t error,
 	 */
 	destroy_rcu_head(&cmd->rcu);
 
+	timer_shutdown(&cmd->abort_work.timer);
 	/*
 	 * In the MQ case the command gets freed by __blk_mq_end_request,
 	 * so we have to do all cleanup that depends on it earlier.
-- 
2.35.1