61e699a133
* A dlmalloc usage error shouldn't call abort(3) because we want to cause a SIGSEGV by writing the address dlmalloc didn't like to an address the kernel won't like, so that debuggerd will dump the memory around the address that upset dlmalloc. * Switch to the simpler FreeBSD/NetBSD style of registering stdio cleanup. Hopefully this will let us simplify more of the stdio implementation. * Clear the stdio cleanup handler before we abort because of a dlmalloc corruption error. This fixes the reported bug, where we'd hang inside dlmalloc because the stdio cleanup reentered dlmalloc. Bug: 9301265 Change-Id: Ief31b389455d6876e5a68f0f5429567d37277dbc
67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
/*
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* Copyright (c) 1985 Regents of the University of California.
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "atexit.h"
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__LIBC_HIDDEN__ void (*__cleanup)();
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#ifdef __arm__
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extern "C" __LIBC_HIDDEN__ void __libc_android_abort()
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#else
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void abort()
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#endif
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{
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// Don't block SIGABRT to give any signal handler a chance; we ignore
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// any errors -- X311J doesn't allow abort to return anyway.
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sigset_t mask;
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sigfillset(&mask);
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sigdelset(&mask, SIGABRT);
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sigprocmask(SIG_SETMASK, &mask, NULL);
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// POSIX requires we flush stdio buffers on abort.
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if (__cleanup) {
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(*__cleanup)();
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}
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raise(SIGABRT);
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// If SIGABRT ignored, or caught and the handler returns,
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// remove the SIGABRT signal handler and raise SIGABRT again.
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struct sigaction sa;
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sa.sa_handler = SIG_DFL;
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sa.sa_flags = SA_RESTART;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGABRT, &sa, &sa);
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sigprocmask(SIG_SETMASK, &mask, NULL);
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raise(SIGABRT);
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_exit(1);
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}
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