linux-kernel - Re: [v4.14-rc8 ghes_copy_tofrom_phys] BUG: sleeping function called from invalid context at lib/ioremap.c:165

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Message-ID: <20171106232015.yw6co4m63f64lrmh@wfg-t540p.sh.intel.com>
Date:   Tue, 7 Nov 2017 07:20:15 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     James Morse <james.morse@....com>,
        Tyler Baicar <tbaicar@...eaurora.org>,
        Borislav Petkov <bp@...e.de>, Len Brown <lenb@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        Huang Ying <ying.huang@...el.com>,
        Chen Gong <gong.chen@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Will Deacon <will.deacon@....com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Timur Tabi <timur@...eaurora.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [v4.14-rc8 ghes_copy_tofrom_phys] BUG: sleeping function called
 from invalid context at lib/ioremap.c:165

On Mon, Nov 06, 2017 at 02:57:20PM -0800, Linus Torvalds wrote:
>On Mon, Nov 6, 2017 at 2:46 PM, Fengguang Wu <fengguang.wu@...el.com> wrote:
>>
>> I can see that in RC8, too:
>
>James Morse posted a new version of his series to fix this, and it's
>gotten a few tests, but not a lot. Since you clearly have GHES support
>on at least some of your machines, it might be worth adding that
>series from James to 0day testing.

Sure. I'll test Rafael's git tree including James' patches.

I can see the GHES warnings in a number of 0day machines:

- ivb44: Ivytown Ivy Bridge-EP, E5-2697 v2

  HW details can be found in
  https://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git/tree/hosts/ivb44

- lkp-bdw-ep6: Broadwell-EP, E5-2699 v4
- lkp-bdw-ex2: Broadwell-EX, E7-8890 v4
- lkp-skl-2sp3: Skylake
- lkp-skl-4sp1: Skylake
- lkp-avoton2: Atom

Regards,
Fengguang