HEADSUP: New pts code triggers panics on amd64 systems.

Giorgos Keramidas keramida at ceid.upatras.gr
Tue Feb 7 04:39:37 PST 2006


On 2006-02-07 13:28, Gary Jennejohn <garyj at jennejohn.org> wrote:
>Giorgos Keramidas writes:
>> On 2006-02-01 15:55, Steve Kargl <sgk at troutmask.apl.washington.edu> wrote:
>> > After a binary search, I have determined that the new pts code is
>> > triggering kernel panics on an AMD64 system.
>>
>> It also makes syscons unusable here.
>>
>> I just rebuilt a HEAD snapshot from today's latest CVSup, installed it
>> in /dev/ad0s1a (my test partition), and the behavior is still the same
>> as a few days ago:
>>
>>     - single user mode shell works fine
>>
>>     - in multiuser mode, when syscons reaches a login prompt
>>       i have to press RET twice to see the last line
>>
>> It seems that something is broken in the way syscons detects whether an
>> output line should be flushed out, but I'm not sure.
>>
>> A snapshot from -D '2006/01/26 01:30:00 UTC' works fine (just before the
>> first pts change).
>>
>> I don't know how to debug this or provide more useful feedback, but I'll
>> look at the diffs later today, when I'm done with $REALJOB stuff.
>
> I'm running a kernel from Feb 5 09:15 (GMT+1) w/o any problems,
> even X works OK.

Is this on amd64?  A kernel and userland from today (Feb 7,
around 07:00 UTC) is unusable on a Ferrari 3400 Lmi here.



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