Re: [bisected] kernel panic 2.6.22 -> 2.6.26-rc9+
From: Krzysztof Halasa
Date: Sun Jul 13 2008 - 06:48:30 EST
Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes:
> (cc's added)
(cc added) :-)
> I guess you're referring to this:
> http://linux.derkeiler.com/Mailing-Lists/Kernel/2008-07/msg04754.html
Right.
>> PPP over ATM connection (Thomson/Alcatel
>> Speedtouch). It doesn't seem to occur on the same IXP4xx with Ethernet
>> or V.35 WAN, and it doesn't occur on i386 + the same Speedtouch ADSL.
>> The kernel is basically unpatched, the only extra patch applied is the
>> platform support (nothing magic).
>>
>> Generally to trigger the panic one has to request a TCP data stream
>> over that PPPoATM connection.
I see what's wrong now: that's the ARM fls() problem, the call in
fls64() to be precise. It seems it was already discussed: the patch in
http://lkml.org/lkml/2008/5/4/233 makes the problem disappear.
Perhaps it's time to fix it definitely?
--
Krzysztof Halasa
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