Re: BUG: spinlock trylock failure on UP - reverting timer patches helps

Stanislav Meduna
2014-04-17T22:55:34Z

On 17.04.2014 18:29, Stanislav Meduna wrote:

> Note: the bug goes away reverting the very same patches that are
> helping the Jordan's problms. I did follow
>
> http://www.spinics.net/lists/linux-rt-users/msg11639.html
>
> and no BUG while booting anymore. I'll try to let it run some
> more time.

Erm.. nope

# (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack
KernelStack: 5920 kB
KernelStack: 5928 kB

# (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack
KernelStack: 5952 kB
KernelStack: 5960 kB

maybe interrupt nesting ad nauseum? How does one debug
such issues?

It is possible that my previous posting was also caused by this -
disregard, I'll post again if the problem persists.

Jordan, could you check whether your kernel stack remains
stable with only the 3 patches reverted?

Thanks
--
Stano