linux-kernel - Re: [mm/highmem] 61b205f579: WARNING:at_mm/highmem.c:#__kmap_local_sched

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Message-ID: <BYAPR04MB496507720FEEF2B77FB639E186929@BYAPR04MB4965.namprd04.prod.outlook.com>
Date:   Tue, 9 Mar 2021 20:53:04 +0000
From:   Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>
To:     Ira Weiny <ira.weiny@...el.com>
CC:     kernel test robot <oliver.sang@...el.com>,
        David Sterba <dsterba@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "hch@...radead.org" <hch@...radead.org>,
        Christoph Hellwig <hch@....de>,
        LKML <linux-kernel@...r.kernel.org>,
        "lkp@...ts.01.org" <lkp@...ts.01.org>,
        "lkp@...el.com" <lkp@...el.com>
Subject: Re: [mm/highmem] 61b205f579:
 WARNING:at_mm/highmem.c:#__kmap_local_sched_out

Ira,

On 3/4/21 00:23, kernel test robot wrote:
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: 61b205f579911a11f0b576f73275eca2aed0d108 ("mm/highmem: Convert memcpy_[to|from]_page() to kmap_local_page()")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
>
> in testcase: trinity
> version: trinity-static-i386-x86_64-f93256fb_2019-08-28
> with following parameters:
>
> 	runtime: 300s
>
> test-description: Trinity is a linux system call fuzz tester.
> test-url: http://codemonkey.org.uk/projects/trinity/
>
>
> on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):

Is the fix for this been posted yet ?

(asking since I didn't see the fix and my mailer is dropping emails from
 lkml).