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Date:   Sat, 24 Nov 2018 17:04:44 +0800
From:   Philip Li <philip.li@intel.com>
To:     Matthew Wilcox <willy@infradead.org>
Cc:     kernel test robot <lkp@intel.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        LKP <lkp@01.org>, linux-pci@vger.kernel.org,
        linux-acpi@vger.kernel.org, linux-input@vger.kernel.org,
        dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
        linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: dad4f140ed ("Merge branch 'xarray' of .."):  Mem-Info:
Message-ID: <20181124090444.GA3141@intel.com>
References: <5bf8a766.2eiLO6qApoh2dO55%lkp@intel.com>
 <20181124035803.GX3065@bombadil.infradead.org>
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On Fri, Nov 23, 2018 at 07:58:03PM -0800, Matthew Wilcox wrote:
> On Sat, Nov 24, 2018 at 09:20:38AM +0800, kernel test robot wrote:
> > Greetings,
> > 
> > 0day kernel testing robot got the below dmesg and the first bad commit is
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > 
> > commit dad4f140edaa3f6bb452b6913d41af1ffd672e45
> 
> I think you've got the wrong bisection point, confused by other messages.
> Here's the messages I think you intend to chase:
> 
> [  155.389297] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck
>  for 52s!
> [  155.409004] BUG: workqueue lockup - pool cpus=0 flags=0x4 nice=0 stuck for 40
> s!
> [  155.420377] Showing busy workqueues and worker pools:
> [  155.428445] workqueue events: flags=0x0
> [  155.434634]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
> [  155.437904]     pending: cache_reap
> [  155.449671] workqueue events_power_efficient: flags=0x82
> [  155.458000]   pwq 2: cpus=0 flags=0x4 nice=0 active=3/256
> [  155.461269]     pending: neigh_periodic_work, do_cache_clean, check_lifetime
> 
> 
> but you're getting hung up on the testsuite problems.
thanks for pointing out this. Kindly ignore this report, which is false positive.

> 
>