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From:   Diego Viola <diego.viola@gmail.com>
Date:   Sun, 22 Apr 2018 14:47:01 -0300
Message-ID: <CA+ToGPFw0v22Pq13cGZdKESBNG1mkAKjZXCsaUcKRFXbYTGg+w@mail.gmail.com>
Subject: Re: Experiencing freezes with kernel 4.16.3 on a desktop with E5500
 CPU (bisect included)
To:     linux-kernel@vger.kernel.org, peterz@infradead.org,
        tglx@linutronix.de, len.brown@intel.com, rui.zhang@intel.com
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On Sat, Apr 21, 2018 at 11:19 PM, Diego Viola <diego.viola@gmail.com> wrote:
> Hi,
>
> I'm currently experiencing freezes after resuming from suspend when
> using various applications on my desktop.
>
> For example, when using Firefox and switching between tabs the screen
> would freeze, allowing me to only move the mouse pointer but focusing
> the mouse pointer on a application won't have any effect.
>
> The keyboard would still work and the only way to make the issue go
> away would be to switch to a virtual desktop and then switch back,
> then I'd be able to use the mouse again until the same problem
> re-occurs.
>
> This never happened before upgrading to 4.16.3 and 4.15.18 is unaffected.
>
> The problem only happens *after* resuming from suspend, in normal S0
> state it never happens.
>
> My machine is a desktop and has a dual core E5500 CPU with 2GB of RAM,
> I run Arch Linux and I use the i3wm.
>
> I don't think it's a problem with user space because I run exactly the
> same Arch Linux setup on my T450 and the issue can't be reproduced on
> that machine.
>
> I did a bisect and the cause of the bug seems to be this commit:
>
> aa83c45762a242acce9b35020363225a7b59d7c9 is the first bad commit
>
> Here is the bisect log:
>
> git bisect start
> # bad: [0adb32858b0bddf4ada5f364a84ed60b196dbcda] Linux 4.16
> git bisect bad 0adb32858b0bddf4ada5f364a84ed60b196dbcda
> # good: [d8a5b80568a9cb66810e75b182018e9edb68e8ff] Linux 4.15
> git bisect good d8a5b80568a9cb66810e75b182018e9edb68e8ff
> # bad: [c14376de3a1befa70d9811ca2872d47367b48767] printk: Wake klogd
> when passing console_lock owner
> git bisect bad c14376de3a1befa70d9811ca2872d47367b48767
> # bad: [a103950e0dd2058df5e8a8d4a915707bdcf205f0] Merge branch 'linus'
> of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
> git bisect bad a103950e0dd2058df5e8a8d4a915707bdcf205f0
> # bad: [d8b91dde38f4c43bd0bbbf17a90f735b16aaff2c] Merge branch
> 'perf-core-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad d8b91dde38f4c43bd0bbbf17a90f735b16aaff2c
> # good: [9697e9da84299d0d715d515dd2cc48f1eceb277d] Merge tag
> 'edac_for_4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
> git bisect good 9697e9da84299d0d715d515dd2cc48f1eceb277d
> # good: [d0bd31dc5c0b46b9c778112900cf8f910ac26e1b] Merge tag
> 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa
> git bisect good d0bd31dc5c0b46b9c778112900cf8f910ac26e1b
> # good: [0337cf74ccf2a43437bff2e23b278e4f2dc4c6e2] perf util:
> Introduce architecture specific errno/name mapping
> git bisect good 0337cf74ccf2a43437bff2e23b278e4f2dc4c6e2
> # bad: [6304672b7f0a5c010002e63a075160856dc4f88d] Merge branch
> 'x86-pti-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad 6304672b7f0a5c010002e63a075160856dc4f88d
> # good: [a46d3f9b1c9888a244ed1ce8da0eca98c3f378e2] Merge branch
> 'timers-core-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect good a46d3f9b1c9888a244ed1ce8da0eca98c3f378e2
> # good: [669c0f762ed19bd9ec128ebc97ae8641b6e1a4a3] Merge branch
> 'x86-platform-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect good 669c0f762ed19bd9ec128ebc97ae8641b6e1a4a3
> # good: [7a32fc51ca938e67974cbb9db31e1a43f98345a9] x86/nospec: Fix
> header guards names
> git bisect good 7a32fc51ca938e67974cbb9db31e1a43f98345a9
> # bad: [942633523cde99c5bfa0329996dd839ca66a87aa] Merge branch
> 'x86-mm-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad 942633523cde99c5bfa0329996dd839ca66a87aa
> # bad: [aa83c45762a242acce9b35020363225a7b59d7c9] x86/tsc: Introduce
> early tsc clocksource
> git bisect bad aa83c45762a242acce9b35020363225a7b59d7c9
> # good: [6d671e1b85c63e7a337ba76c1a154c091545cff8] x86/time:
> Unconditionally register legacy timer interrupt
> git bisect good 6d671e1b85c63e7a337ba76c1a154c091545cff8
> # first bad commit: [aa83c45762a242acce9b35020363225a7b59d7c9]
> x86/tsc: Introduce early tsc clocksource
>
> Current git HEAD is also affected.
>
> I already tried HEAD with that commit reverted and the problem can't
> be reproduced anymore.
>
> Please let me know if I can include more info, thanks in advance.
>
> Diego

When booting with clocksource=hpet I cannot reproduce the problem.