linux-kernel - [PATCH 3.16 167/306] scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded

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Message-ID: <lsq.1487198500.596676662@decadent.org.uk>
Date:   Wed, 15 Feb 2017 22:41:40 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Laurence Oberman" <loberman@...hat.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "Ewan D. Milne" <emilne@...hat.com>
Subject: [PATCH 3.16 167/306] scsi: scsi_debug: Fix memory leak if LBP
 enabled and module is unloaded

3.16.40-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: "Ewan D. Milne" <emilne@...hat.com>

commit 4d2b496f19f3c2cfaca1e8fa0710688b5ff3811d upstream.

map_storep was not being vfree()'d in the module_exit call.

Signed-off-by: Ewan D. Milne <emilne@...hat.com>
Reviewed-by: Laurence Oberman <loberman@...hat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/scsi/scsi_debug.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -3478,6 +3478,7 @@ static void __exit scsi_debug_exit(void)
 	bus_unregister(&pseudo_lld_bus);
 	root_device_unregister(pseudo_primary);
 
+	vfree(map_storep);
 	if (dif_storep)
 		vfree(dif_storep);