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kernel: smc91x: fix broken irq-context in PREEMPT_RT

🗓️ 03 Sep 2026 04:15:14Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

smc91x driver on PREEMPT_RT has broken IRQ unlock causing RCU warning in __dev_queue_xmit.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10x86_64kernel-rt4.18.0-553.159.1.rt7.500.el8_10kernel-rt-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-core4.18.0-553.159.1.rt7.500.el8_10kernel-rt-core-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-core4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-core-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-debuginfo4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-debuginfo-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-devel4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-devel-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-kvm4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-kvm-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-modules4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-modules-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-modules-extra4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debug-modules-extra-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debuginfo4.18.0-553.159.1.rt7.500.el8_10kernel-rt-debuginfo-4.18.0-553.159.1.rt7.500.el8_10.x86_64.rpm
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03 Sep 2026 08:21Current
CVSS 3.15.5 - 7.5
EPSS0.00248
SSVC
4