linux-kernel - Re: [smp] b2a02fc43a: suspend-stress.fail

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Message-ID: <20200610095054.GF2531@hirez.programming.kicks-ass.net>
Date:   Wed, 10 Jun 2020 11:50:54 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        rui.zhang@...el.com
Subject: Re: [smp] b2a02fc43a: suspend-stress.fail

On Wed, Jun 10, 2020 at 04:35:02PM +0800, kernel test robot wrote:
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-9):
> 
> commit: b2a02fc43a1f40ef4eb2fb2b06357382608d4d84 ("smp: Optimize send_call_function_single_ipi()")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> in testcase: suspend-stress
> with following parameters:
> 
> 	mode: freeze
> 	iterations: 10
> 
> 
> 
> on test machine: 2 threads Broxton with 4G memory
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <rong.a.chen@...el.com>
> 
> 
> the result of this commit:
> 
> test started

No dmesg output? No splat?