linux-kernel - hard lock-up with 4.14 git

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Date:   Fri, 13 Oct 2017 13:39:17 +0200
From:   Prakash Punnoor <prakash@...noor.de>
To:     LKML <linux-kernel@...r.kernel.org>, luto@...nel.org,
        mingo@...nel.org
Subject: hard lock-up with 4.14 git

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


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 "cpuinfo.txt" of type "text/plain" (3920 bytes)

View attachment "modules.txt" of type "text/plain" (678 bytes)

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