Re: BUG in 2.6.20-rt8

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On Sat, 2007-02-24 at 21:02 -0800, Paul E. McKenney wrote:
> Hello!
> 
> I got the following running stock 2.6.20-rt8 on an 4-CPU 1.8GHz Opteron
> box.  The machine continued to run a few rounds of kernbench and LTP.
> Looks a bit scary -- a tasklet was "stolen" from __tasklet_action().
> 
> Thoughts?  In the meantime, kicking it off again to see if it repeats.
> 
> 						Thanx, Paul
> 
> BUG: at kernel/softirq.c:559 __tasklet_action()
> 
> Call Trace:
>  [<ffffffff8022ec1b>] __tasklet_action+0xdb/0x120
>  [<ffffffff8022ee12>] ksoftirqd+0xf3/0x179
>  [<ffffffff8022ed1f>] ksoftirqd+0x0/0x179
>  [<ffffffff8023be23>] kthread+0xc8/0xf1
>  [<ffffffff8020a708>] child_rip+0xa/0x12
>  [<ffffffff8023bf27>] kthread_create+0x6e/0x159
>  [<ffffffff8023bd5b>] kthread+0x0/0xf1
>  [<ffffffff8020a6fe>] child_rip+0x0/0x12

Just updating linux-rt

John Stultz found the bug and provided a patch.

http://marc.info/?l=linux-kernel&m=118109631711031&w=2

-- Steve


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