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Commit f320ccc9 authored by Manoj Prabhu B's avatar Manoj Prabhu B
Browse files

diag: Fix possible null pointer dereference 



This patch checks for Null Pointer dereference before destroying the
diag mempools.

CRs-Fixed: 980428
Change-Id: I0e8fc8aa82ad26263bd9d47cbdd22de212efe489
Signed-off-by: default avatarManoj Prabhu B <bmanoj@codeaurora.org>
parent 2642c0ad

drivers/char/diag/diagmem.c

+2 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2008-2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2008-2014, 2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -282,7 +282,7 @@ void diagmem_exit(struct diagchar_dev *driver, int index) 


	mempool = &diag_mempools[index];

	spin_lock_irqsave(&mempool->lock, flags);

	if (mempool->count == 0) {

	if (mempool->count == 0 && mempool->pool != NULL) {

		mempool_destroy(mempool->pool);

		mempool->pool = NULL;

	} else {