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[scudo] Fix bound checks in MemMap and ReservedMemory methods

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Reviewed By: Chia-hungDuan

Differential Revision: https://reviews.llvm.org/D152690
This commit is contained in:
Fabio D'Urso 2023-06-14 03:54:08 +00:00 committed by Chia-hung Duan
parent 1ae6a782f0
commit bd96d7b81f
1 changed files with 5 additions and 5 deletions
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10
compiler-rt/lib/scudo/standalone/mem_map_base.h
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@ -41,7 +41,7 @@ public:
// want to remap them with different accessibility.
bool remap(uptr Addr, uptr Size, const char *Name, uptr Flags = 0) {
DCHECK(isAllocated());
DCHECK((Addr >= getBase()) || (Addr + Size <= getBase() + getCapacity()));
DCHECK((Addr >= getBase()) && (Addr + Size <= getBase() + getCapacity()));
return invokeImpl(&Derived::remapImpl, Addr, Size, Name, Flags);
}
@ -49,7 +49,7 @@ public:
// pages as no read/write permission.
void setMemoryPermission(uptr Addr, uptr Size, uptr Flags) {
DCHECK(isAllocated());
DCHECK((Addr >= getBase()) || (Addr + Size <= getBase() + getCapacity()));
DCHECK((Addr >= getBase()) && (Addr + Size <= getBase() + getCapacity()));
return static_cast<Derived *>(this)->setMemoryPermissionImpl(Addr, Size,
Flags);
}
@ -59,14 +59,14 @@ public:
// virtual pages may lead to undefined behavior.
void releasePagesToOS(uptr From, uptr Size) {
DCHECK(isAllocated());
DCHECK((From >= getBase()) || (From + Size <= getBase() + getCapacity()));
DCHECK((From >= getBase()) && (From + Size <= getBase() + getCapacity()));
invokeImpl(&Derived::releasePagesToOSImpl, From, Size);
}
// This is similar to the above one except that any subsequent access to the
// released pages will return with zero-filled pages.
void releaseAndZeroPagesToOS(uptr From, uptr Size) {
DCHECK(isAllocated());
DCHECK((From >= getBase()) || (From + Size <= getBase() + getCapacity()));
DCHECK((From >= getBase()) && (From + Size <= getBase() + getCapacity()));
invokeImpl(&Derived::releaseAndZeroPagesToOSImpl, From, Size);
}
@ -109,7 +109,7 @@ public:
// the reserved pages is managed by each implementation.
MemMapT dispatch(uptr Addr, uptr Size) {
DCHECK(isCreated());
DCHECK((Addr >= getBase()) || (Addr + Size <= getBase() + getCapacity()));
DCHECK((Addr >= getBase()) && (Addr + Size <= getBase() + getCapacity()));
return invokeImpl(&Derived::dispatchImpl, Addr, Size);
}