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In ACPI Global System Interrupts (GSIs) are described using a 32-bit value. ACPI/PCI legacy interrupts (INTx) parsing code treats GSIs as 'int', which poses issues if the GSI interrupt value is a 32-bit value with the MSB set (as required in some interrupt configurations - eg ARM64 GICv5 systems) because acpi_pci_link_allocate_irq() treats a negative gsi return value as a failed GSI allocation (and acpi_irq_get_penalty() would trigger an out-of-bounds array dereference if the 'irq' param is a negative value). Fix ACPI/PCI legacy INTx parsing by converting variables representing GSIs from 'int' to 'u32' bringing the code in line with the ACPI specification and fixing the current parsing issue. Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260105101705.36703-1-lpieralisi@kernel.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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| .. | ||
| platform | ||
| acbuffer.h | ||
| acconfig.h | ||
| acexcep.h | ||
| acnames.h | ||
| acoutput.h | ||
| acpi.h | ||
| acpi_bus.h | ||
| acpi_drivers.h | ||
| acpi_io.h | ||
| acpi_lpat.h | ||
| acpi_numa.h | ||
| acpiosxf.h | ||
| acpixf.h | ||
| acrestyp.h | ||
| actbl.h | ||
| actbl1.h | ||
| actbl2.h | ||
| actbl3.h | ||
| actypes.h | ||
| acuuid.h | ||
| apei.h | ||
| battery.h | ||
| button.h | ||
| cppc_acpi.h | ||
| ghes.h | ||
| hed.h | ||
| nfit.h | ||
| nhlt.h | ||
| pcc.h | ||
| proc_cap_intel.h | ||
| processor.h | ||
| reboot.h | ||
| video.h | ||