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Kernel: Propagate overflow errors from Memory::page_round_up

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Fixes #11402.
This commit is contained in:
Guilherme Goncalves 2021-12-24 11:22:11 -03:00 • committed by Andreas Kling
parent 11599a3342
commit 33b78915d3
31 changed files with 112 additions and 100 deletions
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7
Kernel/Bus/VirtIO/Device.cpp
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@ -131,7 +131,12 @@ UNMAP_AFTER_INIT void Device::initialize()
auto& mapping = m_mmio[cfg.bar];
mapping.size = PCI::get_BAR_space_size(pci_address(), cfg.bar);
if (!mapping.base && mapping.size) {
auto region_or_error = MM.allocate_kernel_region(PhysicalAddress(page_base_of(PCI::get_BAR(pci_address(), cfg.bar))), Memory::page_round_up(mapping.size), "VirtIO MMIO", Memory::Region::Access::ReadWrite, Memory::Region::Cacheable::No);
auto region_size_or_error = Memory::page_round_up(mapping.size);
if (region_size_or_error.is_error()) {
dbgln_if(VIRTIO_DEBUG, "{}: Failed to round up size={} to pages", m_class_name, mapping.size);
continue;
}
auto region_or_error = MM.allocate_kernel_region(PhysicalAddress(page_base_of(PCI::get_BAR(pci_address(), cfg.bar))), region_size_or_error.value(), "VirtIO MMIO", Memory::Region::Access::ReadWrite, Memory::Region::Cacheable::No);
if (region_or_error.is_error()) {
dbgln_if(VIRTIO_DEBUG, "{}: Failed to map bar {} - (size={}) {}", m_class_name, cfg.bar, mapping.size, region_or_error.error());
} else {