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Date:      Sun, 19 Feb 2012 23:56:58 -0800
From:      Adrian Chadd <adrian@freebsd.org>
To:        Adam Twardowski <adam.twardowski@gmail.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: [urtw] Random wireless crash / kernel panic
Message-ID:  <CAJ-Vmondt98a1gtmVL0kOrJYjTzq0psrEdN4bA=ZbPWHeMSv2g@mail.gmail.com>
In-Reply-To: <CAEvxfZdTxkN-BJnCa1kNYba0k1jA54aDinQ6d_jdYRUqhLATXQ@mail.gmail.com>
References:  <CAEvxfZdTxkN-BJnCa1kNYba0k1jA54aDinQ6d_jdYRUqhLATXQ@mail.gmail.com>

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Hi,

Do you still have the kernel?


On 19 February 2012 18:23, Adam Twardowski <adam.twardowski@gmail.com> wrot=
e:
> Hello, I submitted a bug report the other day regarding a kernel panic
> related to the urtw driver. =A0If anyone needs any additional
> infromation, please let me know.

It looks like there's no node associated with that particular TX.

Change:

                if (m->m_flags & M_TXCB) {


to

                if ((m->m_flags & M_TXCB) && (data->ni !=3D NULL)) {

.. that may fix the crash but it doesn't explain how an mbuf marked
M_TXCB has no node..



Adrian



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