From: David Miller <davem@davemloft.net>
To: glider@google.com
Cc: edumazet@google.com, dvyukov@google.com,
syzkaller@googlegroups.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] tun: bail out from tun_get_user() if the skb is empty
Date: Thu, 28 Sep 2017 08:42:52 -0700 (PDT) [thread overview]
Message-ID: <20170928.084252.253155943275207205.davem@davemloft.net> (raw)
In-Reply-To: <20170928093237.121450-1-glider@google.com>
From: Alexander Potapenko <glider@google.com>
Date: Thu, 28 Sep 2017 11:32:37 +0200
> KMSAN (https://github.com/google/kmsan) reported accessing uninitialized
> skb->data[0] in the case the skb is empty (i.e. skb->len is 0):
...
> Make sure tun_get_user() doesn't touch skb->data[0] unless there is
> actual data.
...
> Signed-off-by: Alexander Potapenko <glider@google.com>
Applied and queued up for -stable, thanks.
prev parent reply other threads:[~2017-09-28 15:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-28 9:32 [PATCH v3] tun: bail out from tun_get_user() if the skb is empty Alexander Potapenko
2017-09-28 15:42 ` David Miller [this message]
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