linux-kernel - Re: [linus:master] [sched/eevdf] 2227a957e1: BUG:kernel_NULL_pointer

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Message-ID: <cb384fac-0de0-4c11-8690-ec12c46da34c@didichuxing.com>
Date: Thu, 1 Feb 2024 09:29:30 +0800
From: Honglei Wang <wanghonglei@...ichuxing.com>
To: Oliver Sang <oliver.sang@...el.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>, <aubrey.li@...ux.intel.com>,
	<yu.c.chen@...el.com>, Tiwei Bie <tiwei.btw@...group.com>, Abel Wu
	<wuyun.abel@...edance.com>
Subject: Re: [linus:master] [sched/eevdf] 2227a957e1:
 BUG:kernel_NULL_pointer_dereference,address



On 2024/1/30 22:09, Oliver Sang wrote:
> hi, Abel,
> 
> On Tue, Jan 30, 2024 at 06:13:32PM +0800, Abel Wu wrote:
>> On 1/30/24 3:24 PM, kernel test robot Wrote:
>>>
>>>
>>> Hello,
>>>
>>> (besides a previous performance report),
>>> kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:
>>>
>>> commit: 2227a957e1d5b1941be4e4207879ec74f4bb37f8 ("sched/eevdf: Sort the rbtree by virtual deadline")
>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>>>
>>> [test failed on linus/master 3a5879d495b226d0404098e3564462d5f1daa33b]
>>> [test failed on linux-next/master 01af33cc9894b4489fb68fa35c40e9fe85df63dc]
>>>
>>> in testcase: trinity
>>> version: trinity-i386-abe9de86-1_20230429

Hi Oliver,

I'm a bit curious, did the problem happen on i386 only? Did you hit it 
on x86_64 or other platform with the same trinity testcases?

Thanks,
Honglei