RE: [PATCH] netvsc: fix dereference before null check errors
From: Haiyang Zhang <haiyangz@microsoft.com>
Date: 2017-03-27 00:50:45
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-----Original Message-----
From: Colin King [mailto:colin.king@canonical.com]
Sent: Saturday, March 25, 2017 10:27 AM
To: KY Srinivasan <kys@microsoft.com>; Haiyang Zhang
[off-list ref]; Stephen Hemminger [off-list ref];
devel@linuxdriverproject.org; netdev@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org; linux-kernel@vger.kernel.org
Subject: [PATCH] netvsc: fix dereference before null check errors
From: Colin Ian King <redacted>
ndev is being checked to see if it is a null pointer however before
the null check ndev is being dereferenced; hence there is a potential
null pointer dereference bug that needs fixing. Fix this by only
dereferencing ndev after the null check.
Detected by CoverityScan, CID#1420760, CID#140761 ("Dereference
before null check")
Signed-off-by: Colin Ian King <redacted>Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Thank you!