bba80dcd80
The WriteProtected mutator for __libc_globals isn't reentrant. Previously we were calling __libc_globals.mutate() inside of GWP-ASan's libc initialisation, which is called inside the __libc_globals.mutate(). This causes problems with malloc_debug and other malloc shims, as they fail to install when GWP-ASan is sampling their processes. Bug: 135634846 Test: atest bionic Change-Id: Iae51faa8d78677eeab6204b6ab4f3ae1b7517ba5
39 lines
1.7 KiB
C
39 lines
1.7 KiB
C
/*
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* Copyright (C) 2020 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 <private/bionic_globals.h>
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#include <private/bionic_malloc_dispatch.h>
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#include <stddef.h>
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// Hooks for libc to possibly install GWP-ASan.
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bool MaybeInitGwpAsanFromLibc(libc_globals* globals);
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// Maybe initialize GWP-ASan. Set force_init to true to bypass process sampling.
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bool MaybeInitGwpAsan(libc_globals* globals, bool force_init = false);
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