ACPI: processor: idle: Fix NULL pointer dereference in hotplug path

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A cpuidle_device might fail to register during boot, but the system can
continue to run. In such cases, acpi_processor_hotplug() can trigger
a NULL pointer dereference when accessing the per-cpu acpi_cpuidle_device.

So add NULL pointer check for the per-cpu acpi_cpuidle_device in
acpi_processor_hotplug.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20260403090253.998322-1-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Huisong Li 2026-04-03 17:02:53 +08:00 • committed by Rafael J. Wysocki

parent 02c68ed11c

commit 47e6a863a8

1 changed files with 2 additions and 3 deletions

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drivers/acpi/processor_idle.c

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