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SubjectRe: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0

* Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:

> > > Also Core 2 Duo, x86_64 [1]
> > >
> > > Race is wide -- 60 seconds of rcutorture is enough.
>
> This is rcutorture by itself, or in parallel with LTP/kernbench?
>
> (I have mostly been running on 4-CPU boxes without failure either way,
> so will try a dual-CPU box.)

FYI, i've been running rcutorture for days on lots of testboxes ranging
all across the x86 spectrum from single CPU, through dual-core, to
dual-socket, dual-socket HT, 8-way and 16-way - both 32-bit and 64-bit
x86.

Not a single failure has been detected in thousands of bootups of random
kernels (rcu-preempt + rcutorture was a frequent combination tested). I
added a WARN_ON() to rcutorture failures so it should show up very
clearly.

This makes me suspect that it might be some special environment issue -
gcc for example. I'm using gcc 4.2.2 on most of the testboxes.

Ingo


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