Re: [PATCH] bnx2: Use dev_kfree_skb_any() in bnx2_tx_int()

From: David Miller
Date: Tue Oct 29 2013 - 22:42:33 EST


From: David Mackey <tdmackey@xxxxxxxxxxxxxxxx>
Date: Tue, 29 Oct 2013 15:16:38 -0700

> Using dev_kfree_skb_any() will resolve the below issue when a
> netconsole message is transmitted in an irq.
...
> Signed-off-by: David Mackey <tdmackey@xxxxxxxxxxxxxxxx>

This is absolutely not the correct fix.

The netpoll facility must invoke ->poll() in an environment which
is compatible, locking and interrupt/soft-interrupt wise, as that
in which it is normally called.

Therefore, bnx2_tx_int(), which is invoked from the driver's ->poll()
method, should not need to use dev_kfree_skb_any(). The real problem
is somewhere else.
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