Andreas Kling 3dcec260ed Kernel: Validate the full range of user memory passed to syscalls ... We now validate the full range of userspace memory passed into syscalls instead of just checking that the first and last byte of the memory are in process-owned regions. This fixes an issue where it was possible to avoid rejection of invalid addresses that sat between two valid ones, simply by passing a valid address and a size large enough to put the end of the range at another valid address. I added a little test utility that tries to provoke EFAULT in various ways to help verify this. I'm sure we can think of more ways to test this but it's at least a start. :^) Thanks to mozjag for pointing out that this code was still lacking! Incidentally this also makes backtraces work again. Fixes #989.		2020-01-02 02:17:12 +01:00
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AnonymousVMObject.cpp	Kernel: Use a FixedArray for VMObject::m_physical_pages	2019-08-07 20:12:50 +02:00
AnonymousVMObject.h	Kernel: Start implementing purgeable memory support	2019-12-09 19:12:38 +01:00
InodeVMObject.cpp	Kernel: Add a mode flag to sys$purge and allow purging clean inodes	2019-12-29 13:16:53 +01:00
InodeVMObject.h	Kernel: Add a mode flag to sys$purge and allow purging clean inodes	2019-12-29 13:16:53 +01:00
MemoryManager.cpp	Kernel: Validate the full range of user memory passed to syscalls	2020-01-02 02:17:12 +01:00
MemoryManager.h	Kernel: Validate the full range of user memory passed to syscalls	2020-01-02 02:17:12 +01:00
PageDirectory.cpp	Kernel: Enable PAE (Physical Address Extension)	2019-12-25 13:35:57 +01:00
PageDirectory.h	Kernel: Enable PAE (Physical Address Extension)	2019-12-25 13:35:57 +01:00
PhysicalAddress.h	Kernel: Add LogStream operator<< for PhysicalAddress	2019-09-15 20:47:49 +02:00
PhysicalPage.cpp	Kernel: Move kmalloc() into a Kernel/Heap/ directory	2019-09-16 09:01:44 +02:00
PhysicalPage.h	Kernel: Add a simple slab allocator for small allocations	2019-09-16 10:33:27 +02:00
PhysicalRegion.cpp	Kernel: Fix returning pages to regions >= 2GB	2019-09-17 09:27:23 +02:00
PhysicalRegion.h	Kernel: Move PhysicalAddress.h into VM/	2019-07-09 15:04:45 +02:00
PurgeableVMObject.cpp	Kernel: When physical page allocation fails, try to purge something	2019-12-26 11:45:36 +01:00
PurgeableVMObject.h	Kernel: When physical page allocation fails, try to purge something	2019-12-26 11:45:36 +01:00
RangeAllocator.cpp	Kernel: Make it possible to turn off VM guard pages at compile time	2019-09-30 17:22:16 +02:00
RangeAllocator.h	AK: Rename <AK/AKString.h> to <AK/String.h>	2019-09-06 15:36:54 +02:00
Region.cpp	Kernel: Share code between Region::map() and Region::remap_page()	2020-01-01 19:32:55 +01:00
Region.h	Kernel: Share code between Region::map() and Region::remap_page()	2020-01-01 19:32:55 +01:00
VirtualAddress.h	Kernel: Add LogStream operator<< for VirtualAddress	2019-08-06 10:28:46 +02:00
VMObject.cpp	Kernel: Rename vmo => vmobject everywhere	2019-12-19 19:15:27 +01:00
VMObject.h	Kernel: Start implementing purgeable memory support	2019-12-09 19:12:38 +01:00