Patch "scsi: libsas: fix memory leak in sas_smp_get_phy_events()" has been added to the 4.15-stable tree

Patch "scsi: libsas: fix memory leak in sas_smp_get_phy_events()" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    scsi: libsas: fix memory leak in sas_smp_get_phy_events()

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-libsas-fix-memory-leak-in-sas_smp_get_phy_events.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Apr  9 10:16:32 CEST 2018
From: Jason Yan <yanaijie@huawei.com>
Date: Thu, 4 Jan 2018 21:04:31 +0800
Subject: scsi: libsas: fix memory leak in sas_smp_get_phy_events()

From: Jason Yan <yanaijie@huawei.com>


[ Upstream commit 4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 ]

We've got a memory leak with the following producer:

while true;
do cat /sys/class/sas_phy/phy-1:0:12/invalid_dword_count >/dev/null;
done

The buffer req is allocated and not freed after we return. Fix it.

Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: chenqilin <chenqilin2@huawei.com>
CC: chenxiang <chenxiang66@hisilicon.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/libsas/sas_expander.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -695,6 +695,7 @@ int sas_smp_get_phy_events(struct sas_ph
 	phy->phy_reset_problem_count = scsi_to_u32(&resp[24]);
 
  out:
+	kfree(req);
 	kfree(resp);
 	return res;
 


Patches currently in stable-queue which might be from yanaijie@huawei.com are

queue-4.15/scsi-libsas-initialize-sas_phy-status-according-to-response-of-discover.patch
queue-4.15/scsi-libsas-fix-error-when-getting-phy-events.patch
queue-4.15/scsi-libsas-fix-memory-leak-in-sas_smp_get_phy_events.patch
queue-4.15/scsi-libsas-use-dynamic-alloced-work-to-avoid-sas-event-lost.patch