linux-kernel - [RESEND PATCHv2] misc: cxl: Fix possible null pointer dereference

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Message-ID: <1538629373-33217-1-git-send-email-zhongjiang@huawei.com>
Date:   Thu, 4 Oct 2018 13:02:53 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <gregkh@...uxfoundation.org>
CC:     <andrew.donnellan@....ibm.com>, <fbarrat@...ux.vnet.ibm.com>,
        <linux-kernel@...r.kernel.org>
Subject: [RESEND PATCHv2] misc: cxl: Fix possible null pointer dereference

It is not safe to dereference an object before a null test. It is
not needed and just remove them. Ftrace can be used instead.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 drivers/misc/cxl/guest.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c
index 3bc0c15..5d28d9e 100644
--- a/drivers/misc/cxl/guest.c
+++ b/drivers/misc/cxl/guest.c
@@ -1018,8 +1018,6 @@ int cxl_guest_init_afu(struct cxl *adapter, int slice, struct device_node *afu_n
 
 void cxl_guest_remove_afu(struct cxl_afu *afu)
 {
-	pr_devel("in %s - AFU(%d)\n", __func__, afu->slice);
-
 	if (!afu)
 		return;
 
-- 
1.7.12.4