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Bug 1661568
Summary: | Tons of BUG: non-zero pgtables_bytes on freeing mm: -16384" in the 4.19 kernel of f29 | ||
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Product: | [Fedora] Fedora | Reporter: | Christian Borntraeger <borntraeger> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | high | Docs Contact: | |
Priority: | unspecified | ||
Version: | 29 | CC: | airlied, borntraeger, bskeggs, bugproxy, dan, ewk, hannsj_uhl, hdegoede, ichavero, itamar, jarodwilson, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, mchehab, mjg59, steved, y9t7sypezp |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | s390x | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | kernel-4.19.13-200.fc28 kernel-4.19.13-300.fc29 | Doc Type: | If docs needed, set a value |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2019-01-04 12:28:26 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 467765 |
Description
Christian Borntraeger
2018-12-21 15:33:28 UTC
(In reply to Christian Borntraeger from comment #0) ... > This seems to have been fixed upstream with > > e12e4044aede9 s390/mm: fix mis-accounting of pgtable_bytes ... That appears to have gone into v4.20-rc2, so you might try a rawhide kernel: https://mirrors.kernel.org/fedora/development/rawhide/Everything/x86_64/os/Packages/k/ s390/mm: fix mis-accounting of pgtable_bytes https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v4.20-rc2&id=e12e4044aede97974f2222eb7f0ed726a5179a32 There was also a later merge commit with the same patch: Merge tag 's390-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v4.20-rc2&id=3541833fd1f264e7579e573a6586a1b665da37db (In reply to Steve from comment #1) > ... so you might try a rawhide kernel: > https://mirrors.kernel.org/fedora/development/rawhide/Everything/x86_64/os/ > Packages/k/ Link to s390x architecture: https://mirrors.kernel.org/fedora-secondary/development/rawhide/Everything/s390x/os/Packages/k/ FWIW, 4.19.2-301.fc29.s390x does not have the issue, so the warning must have sneaked in between 4.19.2 and 4.19.10 The 4.20 from rawhide does not have the pgtable_bytes issue but it is crashing very early in random places when running on f29. No idea yet whats wrong (the same kernel runs fine when booting that via virt-install from pub/fedora-secondary/development/rawhide/Server/s390x/os/ Seems that this is caused by a partial backport of e12e4044aede9 s390/mm: fix mis-accounting of pgtable_bytes in 4.19.5 See https://lore.kernel.org/lkml/4e58571e-1991-4a70-7012-ff9dd76afee3@de.ibm.com/T/#u Reading the thread mentioned in comment #4 there will be a fix in the stable 4.19 tree. And looking into the 4.19 log it's already in 4.19.13. I can confirm that 4.19.13-300.fc29.s390x fixes the issue. |