Re: Wireless-testing's b43 panics in b43_generate_txhdr on packet transmit

On Saturday 31 May 2008 22:29:13 Stefanik Gábor wrote:
On Sat, May 31, 2008 at 10:22 PM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
On Sat, 2008-05-31 at 19:54 +0200, Michael Buesch wrote:
On Saturday 31 May 2008 18:50:36 Pavel Roskin wrote:
On Sat, 2008-05-31 at 18:41 +0200, Michael Buesch wrote:
On Saturday 31 May 2008 18:34:29 Stefanik Gábor wrote:
"BUG: unable to handle kernel NULL pointer dereference at 00000004
IP: [<f8dd3a99>] :b43:b43_generate_txhdr+0x6a9/0x790

So can you put a few printks into the function to see where it dereferences
a NULL pointer? (or use gdb to lookup the offset).

u8 key_idx = info->control.hw_key->hw_key_idx;

info->control.hw_key is NULL.

Is a NULL pointer supposed to tell "do not encrypt", or is this a mac80211 bug?

It's probably a bug.

johannes


Should we assume that it's the first key if it happens?

No. It looks like it should not happen at all.


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