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Type: Bug
Resolution: Unresolved
Priority: Minor
Fix Version/s: rhel-9.6
Affects Version/s: rhel-9.4.z
Component/s: kernel / Memory Management
Labels:
None

Fixed in Build:
kernel-5.14.0-521.el9
Regression:
No
Severity:
Low
Keywords:

Patch
sprint_count:
3

Pool Team:

rhel-sst-kernel-ft
Sub-System Group:

ssg_core_kernel

Dev Target Milestone:
2
Internal Target Milestone:
4
Story Points:
1
ACKs Check:

QE ack, Dev ack
Blocked:
False
Blocked Reason:

Hide

None

Show
None
Product Documentation Required:
None
Products:

Red Hat Enterprise Linux
Sprint:
CK-September-2024, CK-October-2024, CK-November-2024

Preliminary Testing:
Pass
Testable Builds:

Hide
The following Merge Request has pipeline job artifacts available:

Title: uapi: Fix miscellaneous include/uapi/asm-generic issues
MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/4830
MR Pipeline: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/pipelines/1391344883

The Repo URLs are *not* accessible from a web browser! They only function as a dnf or yum baseurl.

Artifacts expire six weeks after creation. If artifacts are needed after that time please rerun the pipeline by visiting the MR's 'Pipelines' tab and clicking the 'Run pipeline' button.

----------------------------------------

Downstream Pipeline Name: RHEL_COMPAT (c9s_rhel9_compat_merge_request)
DataWarehouse Checkout: https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344913

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5.14.0-487.4830_1391344883.el9.x86_64-debug:
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5.14.0-487.4830_1391344883.el9.x86_64:
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----------------------------------------

Downstream Pipeline Name: REALTIME (c9s_rt_merge_request)
DataWarehouse Checkout: https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344910

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Downstream Pipeline Name: AUTOMOTIVE (c9s_automotive_check_merge_request)
DataWarehouse Checkout: https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344915

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5.14.0-487.436.4830_1391344883.el9iv.aarch64:
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----------------------------------------

Downstream Pipeline Name: 64K (c9s_64k_merge_request)
DataWarehouse Checkout: https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344921

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5.14.0-487.4830_1391344883.el9.aarch64:
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----------------------------------------

Updated 2024-07-29 04:15 UTC by buglinker:
- KWF FAQ: https://red.ht/kernel_workflow_doc
- Slack #team-kernel-workflow: https://redhat-internal.slack.com/archives/C04LRUPMJQ5
- Source: https://gitlab.com/cki-project/kernel-workflow/-/blob/main/webhook/buglinker.py
- Documentation: https://gitlab.com/cki-project/kernel-workflow/-/blob/main/docs/README.buglinker.md
- Report an issue: https://gitlab.com/cki-project/kernel-workflow/-/issues/new?issue%5Btitle%5D=buglinker%20webhook%20issue

Show
The following Merge Request has pipeline job artifacts available: Title: uapi: Fix miscellaneous include/uapi/asm-generic issues MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/4830 MR Pipeline: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/pipelines/1391344883 The Repo URLs are *not* accessible from a web browser! They only function as a dnf or yum baseurl. Artifacts expire six weeks after creation. If artifacts are needed after that time please rerun the pipeline by visiting the MR's 'Pipelines' tab and clicking the 'Run pipeline' button. ---------------------------------------- Downstream Pipeline Name: RHEL_COMPAT (c9s_rhel9_compat_merge_request) DataWarehouse Checkout: https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344913 5.14.0-487.4830_1391344883.el9.s390x-debug: Artifacts (RPMs): https://artifacts.internal.cki-project.org/arr-cki-prod-internal-artifacts/index.html?prefix=internal-artifacts/1391344913/publish_s390x_debug/7446906961/artifacts/repo/5.14.0-487.4830_1391344883.el9.s390x/ Repo URL: https://artifacts.internal.cki-project.org/arr-cki-prod-internal-artifacts/internal-artifacts/1391344913/publish_s390x_debug/7446906961/artifacts/repo/5.14.0-487.4830_1391344883.el9.s390x/ 5.14.0-487.4830_1391344883.el9.s390x: Artifacts (RPMs): 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https://datawarehouse.cki-project.org/kcidb/checkouts/redhat:1391344921 5.14.0-487.4830_1391344883.el9.aarch64-debug: Artifacts (RPMs): https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/index.html?prefix=trusted-artifacts/1391344921/publish_aarch64_debug/7446906965/artifacts/repo/5.14.0-487.4830_1391344883.el9.aarch64/ Repo URL: https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/1391344921/publish_aarch64_debug/7446906965/artifacts/repo/5.14.0-487.4830_1391344883.el9.aarch64/ 5.14.0-487.4830_1391344883.el9.aarch64: Artifacts (RPMs): https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/index.html?prefix=trusted-artifacts/1391344921/publish_aarch64/7446906958/artifacts/repo/5.14.0-487.4830_1391344883.el9.aarch64/ Repo URL: https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/1391344921/publish_aarch64/7446906958/artifacts/repo/5.14.0-487.4830_1391344883.el9.aarch64/ ---------------------------------------- Updated 2024-07-29 04:15 UTC by buglinker: - KWF FAQ: https://red.ht/kernel_workflow_doc - Slack #team-kernel-workflow: https://redhat-internal.slack.com/archives/C04LRUPMJQ5 - Source: https://gitlab.com/cki-project/kernel-workflow/-/blob/main/webhook/buglinker.py - Documentation: https://gitlab.com/cki-project/kernel-workflow/-/blob/main/docs/README.buglinker.md - Report an issue: https://gitlab.com/cki-project/kernel-workflow/-/issues/new?issue%5Btitle%5D=buglinker%20webhook%20issue
Errata Link:
https://errata.engineering.redhat.com/advisory/138410
Test Coverage:
None

Experience:
Architecture:

All

SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

Planning:
None

The kernel-headers-5.14.0-427.26.1.el9_4.x86_64 package has this in /usr/include/asm-generic/hugetlb_encode.h:

#define HUGETLB_FLAG_ENCODE_SHIFT       26
#define HUGETLB_FLAG_ENCODE_16GB        (34 << HUGETLB_FLAG_ENCODE_SHIFT)

This is undefined C and has later been changed in this upstream commit:

commit 710bb68c2e3a24512e2d2bae470960d7488e97b1
Author: Matthias Goergens <matthias.goergens@gmail.com>
Date:   Mon Sep 5 11:19:04 2022 +0800

    hugetlb_encode.h: fix undefined behaviour (34 << 26)
    
    Left-shifting past the size of your datatype is undefined behaviour in C.
    The literal 34 gets the type `int`, and that one is not big enough to be
    left shifted by 26 bits.
    
    An `unsigned` is long enough (on any machine that has at least 32 bits for
    their ints.)
    
    For uniformity, we mark all the literals as unsigned.  But it's only
    really needed for HUGETLB_FLAG_ENCODE_16GB.
    
    Thanks to Randy Dunlap for an initial review and suggestion.
    
    Link: https://lkml.kernel.org/r/20220905031904.150925-1-matthias.goergens@gmail.com
    Signed-off-by: Matthias Goergens <matthias.goergens@gmail.com>
    Acked-by: Randy Dunlap <rdunlap@infradead.org>
    Cc: Mike Kravetz <mike.kravetz@oracle.com>
    Cc: Muchun Song <songmuchun@bytedance.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Current (upstream) glibc expects this fixed definition, result in a slightly annoying glibc test suite failure.

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Merge Request: uapi: Fix miscellaneous include/uapi/asm-generic issues

RHSA-2024:138410 kernel bug fix and enhancement update

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