linux-kernel - Re: hard lock-up with 4.14 git

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Message-ID: <21c27cee-8314-238e-49d1-9316222ee80b@punnoor.de>
Date:   Fri, 13 Oct 2017 13:43:46 +0200
From:   Prakash Punnoor <prakash@...noor.de>
To:     LKML <linux-kernel@...r.kernel.org>, luto@...nel.org,
        mingo@...nel.org
Subject: Re: hard lock-up with 4.14 git

On 13.10.2017 13:39, Prakash Punnoor wrote:
> Hi,
>
> after some use (eg. compiling packages) the machine locks up hard. Magic
> SysRq doesn't work.
>
> I had trouble bisecting the offending commit. This is my third try. And
> it points to 94b1b03b519b81c494900cb112aa00ed205cc2d9 "x86/mm: Rework
> lazy TLB mode and TLB freshness tracking".
>
> Does it make sense? It still locks up with master. Please let me know if
> you need more infos. Please CC, as I am not subscribed.
>
> Regards,
>
> Prakash
>

Hi again, I forgot the kernel config. It is attached now.

Regards,

Prakash

> PS: The log:
>
> git bisect start
> # good: [569dbb88e80deb68974ef6fdd6a13edb9d686261] Linux 4.13
> git bisect good 569dbb88e80deb68974ef6fdd6a13edb9d686261
> # bad: [2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e] Linux 4.14-rc1
> git bisect bad 2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e
> # bad: [aae3dbb4776e7916b6cd442d00159bea27a695c1] Merge
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
> git bisect bad aae3dbb4776e7916b6cd442d00159bea27a695c1
> # bad: [bf1d6b2c76eda86159519bf5c427b1fa8f51f733] Merge tag
> 'staging-4.14-rc1' of
> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
> git bisect bad bf1d6b2c76eda86159519bf5c427b1fa8f51f733
> # good: [edc2988c548db05e33b921fed15821010bc74895] Merge branch 'linus'
> into locking/core, to fix up conflicts
> git bisect good edc2988c548db05e33b921fed15821010bc74895
> # bad: [04759194dc447ff0b9ef35bc641ce3bb076c2930] Merge tag
> 'arm64-upstream' of
> git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
> git bisect bad 04759194dc447ff0b9ef35bc641ce3bb076c2930
> # good: [5f82e71a001d14824a7728ad9e49f6aea420f161] Merge branch
> 'locking-core-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect good 5f82e71a001d14824a7728ad9e49f6aea420f161
> # bad: [f57091767add2b79d76aac41b83b192d8ba1dce7] Merge branch
> 'x86-cache-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad f57091767add2b79d76aac41b83b192d8ba1dce7
> # bad: [dd90cccffc20a15d8e4c3ac8813f4b6a6cd4766f] Merge branch
> 'timers-core-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad dd90cccffc20a15d8e4c3ac8813f4b6a6cd4766f
> # bad: [e505371dd83963caae1a37ead9524e8d997341be] x86/boot: Add early
> cmdline parsing for options with arguments
> git bisect bad e505371dd83963caae1a37ead9524e8d997341be
> # bad: [b9d05200bc12444c7778a49c9694d8382ed06aa8] x86/mm: Insure that
> boot memory areas are mapped properly
> git bisect bad b9d05200bc12444c7778a49c9694d8382ed06aa8
> # bad: [f7750a79568788473c5e8092ee58a52248f34329] x86, mpparse,
> x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings
> git bisect bad f7750a79568788473c5e8092ee58a52248f34329
> # bad: [cba4671af7550e008f7a7835f06df0763825bf3e] x86/mm: Disable PCID
> on 32-bit kernels
> git bisect bad cba4671af7550e008f7a7835f06df0763825bf3e
> # good: [b0579ade7cd82391360e959cc844e50a160e8a96] x86/mm: Track the
> TLB's tlb_gen and update the flushing algorithm
> git bisect good b0579ade7cd82391360e959cc844e50a160e8a96
> # bad: [43858b4f25cf0adc5c2ca9cf5ce5fdf2532941e5] x86/mm: Stop calling
> leave_mm() in idle code
> git bisect bad 43858b4f25cf0adc5c2ca9cf5ce5fdf2532941e5
> # bad: [94b1b03b519b81c494900cb112aa00ed205cc2d9] x86/mm: Rework lazy
> TLB mode and TLB freshness tracking
> git bisect bad 94b1b03b519b81c494900cb112aa00ed205cc2d9
> # first bad commit: [94b1b03b519b81c494900cb112aa00ed205cc2d9] x86/mm:
> Rework lazy TLB mode and TLB freshness tracking
>


View attachment "config.txt" of type "text/plain" (89473 bytes)