Re: [QUESTION ON BUG] the rcu stall issue could not be reproduced

From: Martin Mokrejs
Date: Mon Jul 23 2012 - 14:46:27 EST

I see few more RCU bugs reported in bugzilla:

And, I placed my previous long email with logs at

Hope this helps eventually once.

Mike Galbraith wrote:
> On Fri, 2012-07-20 at 11:09 +0800, Michael Wang wrote:
>> Hi, Mike, Martin, Dan
>> I'm currently taking an eye on the rcu stall issue which was reported by
>> you in the mail:
>> rcu: endless stalls
>> From: Mike Galbraith
>> linux-3.4-rc7: rcu_sched self-detected stall on CPU
>> From: Martin Mokrejs
>> RCU stalls in linux-next
>> From: Dan Carpenter
>> I try to reproduce the issue on my X86 server with 12 cpu
> The 'endless stalls' box was 341.33333 times larger. Dunno if you can
> even set a serial port slow enough to approximate all cores trying to
> gripe through a single pinhole simultaneously.
> -Mike

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