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kernel: s390/idle: mark arch_cpu_idle() noinstr

🗓️ 13 May 2025 08:28:50Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 9 Views

Kernel warning vulnerability in s390 idle handling; arch_cpu_idle() is not marked noinstr, causing RCU and tracing warnings when ftrace is enabled.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.6aarch64kernel5.14.0-570.12.1.el9_6kernel-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lekernel5.14.0-570.12.1.el9_6kernel-5.14.0-570.12.1.el9_6.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xkernel5.14.0-570.12.1.el9_6kernel-5.14.0-570.12.1.el9_6.s390x.rpm
Red Hat Enterprise Linux9.6x86_64kernel5.14.0-570.12.1.el9_6kernel-5.14.0-570.12.1.el9_6.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k5.14.0-570.12.1.el9_6kernel-64k-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k-core5.14.0-570.12.1.el9_6kernel-64k-core-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k-debug5.14.0-570.12.1.el9_6kernel-64k-debug-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k-debug-core5.14.0-570.12.1.el9_6kernel-64k-debug-core-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k-debug-debuginfo5.14.0-570.12.1.el9_6kernel-64k-debug-debuginfo-5.14.0-570.12.1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6aarch64kernel-64k-debug-devel5.14.0-570.12.1.el9_6kernel-64k-debug-devel-5.14.0-570.12.1.el9_6.aarch64.rpm
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20 Aug 2026 08:12Current
5.8Medium risk
Vulners AI Score5.8
EPSS0.00218
9