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Date: Wed, 2 Apr 2025 14:41:14 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: kernel test robot <oliver.sang@intel.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org
Subject: Re: [peterz-queue:sched/hrtick] [entry,hrtimer,x86] c07c4e0c01:
 BUG:soft_lockup-CPU##stuck_for#s![schbench:#]
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References: <202503280925.27fefb28-lkp@intel.com>
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In-Reply-To: <202503280925.27fefb28-lkp@intel.com>

On Fri, Mar 28, 2025 at 09:24:05AM +0800, kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed "BUG:soft_lockup-CPU##stuck_for#s![schbench:#]" on:
> 
> commit: c07c4e0c013dc11dd466fa63a4af12ef8282b27b ("entry,hrtimer,x86: Push reprogramming timers into the interrupt return path")
> https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git sched/hrtick
> 
> in testcase: schbench
> version: schbench-x86_64-48aed1d-1_20241103
> with following parameters:
> 
> 	iterations: 3x
> 	message_threads: 10%
> 	worker_threads: 128
> 	runtime: 300s
> 	cpufreq_governor: performance
> 
> 
> 
> config: x86_64-rhel-9.4
> compiler: gcc-12
> test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory
> 

Thanks, I can reproduce. I'll poke at it some.