netdev - Using dev_queue_xmit causes a system halt problem.

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Message-ID: <CAGXkBO8tYr9c2=m6O=ZmB7u9=xvn9bCrjqsFozTTzSnz4n-n3g@mail.gmail.com>
Date:	Mon, 3 Jun 2013 22:05:04 +0200
From:	Lawrence Lee <lawrenceqli@...il.com>
To:	netdev@...r.kernel.org
Subject: Using dev_queue_xmit causes a system halt problem.

Hi all,

I use netfilter to hook packets at the NF_INET_LOCAL_OUT hook and send
the packets using dev_queue_xmit(). My module can successfully sends
packets. Unfortunately, the system always halts when my module is
installed. It seems that using dev_queue_xmit() causes an issue of a
deadlock. The problem is same when I use ndo_start_xmit() to send
packets. However, I am not sure what the exact problem is. May I know
how I can fix this problem. Thank you!

Best,
Lawrence
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