Re: 2.6.35->2.6.36 regression, vanilla kernel panic, ppp or hrtimers crashing

I try to reverse and got very weird lockups (no netconsole logs and no 
watchdog triggered reboot on that remote machine).
I will try to cook something to reboot it, because it is very remote machine

On Wednesday 03 November 2010 09:38:54 Jarek Poplawski wrote:

On Tue, Nov 02, 2010 at 03:49:47PM +0200, Denys Fedoryshchenko wrote:

quoted

I didn't try yet, but i enable more debugs and catch linked list
corruption.

It should be very useful but it seems there were no significant changes
in ppp locking between 2.6.35 and .36 except the patch I mentioned, so
it would be nice to check this first and try to fix it properly later.

Jarek P.

quoted

Here is dumps from netconsole:
http://www.nuclearcat.com/ll.txt
http://www.nuclearcat.com/ll2.txt

I have another PC, also fails to run 2.6.36, but netconsole don't give
anything.
Both PC's have strange issue with clock drifting away too much (on 2.6.35
and maybe even before).

On Thursday 28 October 2010 10:05:50 Jarek Poplawski wrote:

quoted

On 2010-10-25 11:22, Denys Fedoryshchenko wrote:

quoted

Hi

Here is what i got from netconsole

 [  259.238755] BUG: unable to handle kernel
 paging request
 at f8ba001c9999
 [  259.238953] IP:
 [<c0199ebe>] do_select+0x2cc/0x502

...

quoted

It is not easy to do full git bisect(it is semi-embedded distro), but
i can try reversing particular commits, if someone can give idea
which one, and can try debug patches.

Hi,
Nothing concrete, but you might try reverting this one:

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.36.y.git;a=c
ommi tdiff;h=15fd0cd9a2ad24a78fbee369dec8ca660979d57e

Jarek P.
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