On Fri, 08 May 2026 09:42:56 +0530, Aboorva Devarajan wrote:
> Four sysfs show() callbacks in hv-gpci take get_cpu_var(hv_gpci_reqb)
> (which calls preempt_disable()) but only call the matching put_cpu_var()
> on the error path under the 'out:' label. Every successful read leaks
> one preempt_disable():
>
> processor_bus_topology_show()
> processor_config_show()
> affinity_domain_via_virtual_processor_show()
> affinity_domain_via_domain_show()
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/hv-gpci: fix preempt count leak in sysfs show paths
https://git.kernel.org/powerpc/c/dbc30a57bd8e026995e9fa8e8c31cffd18542c01
cheers
