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Commit 8502c1a8 authored by Chris Manton's avatar Chris Manton
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osi: Prevent memory allocations with MSB set 

Limit allocations on 32bit to 2 GB
Limit allocations on 64bit to 8 Exabyte

Bug: 197868577
Tag: #refactor
Test: gd/cert/run
Ignore-AOSP-First: Security
Change-Id: I1c347084d7617b1e364a3241f1b37b398a2a6c6a
parent ee5cca8f

system/osi/src/allocator.cc

+2 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ char* osi_strndup(const char* str, size_t len) { 
}



void* osi_malloc(size_t size) {

  CHECK(static_cast<ssize_t>(size) >= 0);

  size_t real_size = allocation_tracker_resize_for_canary(size);

  void* ptr = malloc(real_size);

  CHECK(ptr);
@@ -63,6 +64,7 @@ void* osi_malloc(size_t size) { 
}



void* osi_calloc(size_t size) {

  CHECK(static_cast<ssize_t>(size) >= 0);

  size_t real_size = allocation_tracker_resize_for_canary(size);

  void* ptr = calloc(1, real_size);

  CHECK(ptr);