Patch "[PATCH 072/135] mpt3sas: A correction in unmap_resources" has been added to the 4.4-stable tree

Patch "[PATCH 072/135] mpt3sas: A correction in unmap_resources" has been added to the 4.4-stable tree

[gregkh]

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

    [PATCH 072/135] mpt3sas: A correction in unmap_resources

to the 4.4-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:
     0072-mpt3sas-A-correction-in-unmap_resources.patch
and it can be found in the queue-4.4 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 18e9ca3f5e05c1435421bc94f821db774df4c78d Mon Sep 17 00:00:00 2001
From: Tomas Henzl <thenzl@redhat.com>
Date: Wed, 23 Dec 2015 14:21:47 +0100
Subject: [PATCH 072/135] mpt3sas: A correction in unmap_resources

[ Upstream commit 5f985d88bac34e7f3b4403118eab072902a0b392 ]

It might happen that we try to free an already freed pointer.

Reported-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Chaitra P B <chaitra.basappa@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/mpt3sas/mpt3sas_base.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2020,8 +2020,10 @@ mpt3sas_base_unmap_resources(struct MPT3
 	_base_free_irq(ioc);
 	_base_disable_msix(ioc);
 
-	if (ioc->msix96_vector)
+	if (ioc->msix96_vector) {
 		kfree(ioc->replyPostRegisterIndex);
+		ioc->replyPostRegisterIndex = NULL;
+	}
 
 	if (ioc->chip_phys) {
 		iounmap(ioc->chip);


Patches currently in stable-queue which might be from thenzl@redhat.com are

queue-4.4/0065-megaraid_sas-Add-an-i-o-barrier.patch
queue-4.4/0096-arcmsr-fixes-not-release-allocated-resource.patch
queue-4.4/0073-mpt3sas-Fix-for-Asynchronous-completion-of-timedout-.patch
queue-4.4/0063-megaraid_sas-Do-not-allow-PCI-access-during-OCR.patch
queue-4.4/0072-mpt3sas-A-correction-in-unmap_resources.patch
queue-4.4/0064-megaraid_sas-Fix-SMAP-issue.patch