3083cc9479
When enabled, GWP-ASan sets the current dispatch table. Then, when a shim layer (malloc_debug, malloc_hooks, heapprofd) comes along, they should (by design) overwrite the current dispatch table. Currently, these shim layers check to see whether malloc_limit is installed by checking the current dispatch table against nullptr. Because GWP-ASan owns the current dispatch table, the shim thinks that malloc_limit is installed and falls back to only use the default dispatch, thinking that malloc_limit will call them. This is not the case, and they should take over the current dispatch pointer. Bug: 135634846 Test: atest bionic Change-Id: Ifb6f8864a15af9ac7f20d9364c40f73c5dd9d870
38 lines
1.6 KiB
C
38 lines
1.6 KiB
C
/*
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* Copyright (C) 2019 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <stdint.h>
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// Function prototypes.
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bool LimitEnable(void* arg, size_t arg_size);
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// Returns true if malloc_limit is installed (by checking the current dispatch
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// table).
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bool MallocLimitInstalled();
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