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0552fd2c7d
These deprecated functions are only safe to call from __malloc_initialize_hook and as a result, are not useful in the general case. Move the implementations to libc_malloc_debug so that existing binaries that need it will now have to preload the debug DSO to work correctly. This also allows simplification of the core malloc implementation by dropping all the undumping support code that was added to make malloc_set_state work. One known breakage is that of ancient emacs binaries that depend on this. They will now crash when running with this libc. With LD_BIND_NOW=1, it will terminate immediately because of not being able to find malloc_set_state but with lazy binding it will crash in unpredictable ways. It will need a preloaded libc_malloc_debug.so so that its initialization hook is executed to allow its malloc implementation to work properly. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
339 lines
12 KiB
Makefile
339 lines
12 KiB
Makefile
# Copyright (C) 1991-2021 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Makefile for malloc routines
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#
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subdir := malloc
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include ../Makeconfig
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dist-headers := malloc.h
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headers := $(dist-headers) obstack.h mcheck.h
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tests := mallocbug tst-malloc tst-valloc tst-calloc tst-obstack \
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tst-malloc-check tst-mallocfork tst-trim1 \
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tst-malloc-usable tst-realloc tst-reallocarray tst-posix_memalign \
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tst-pvalloc tst-pvalloc-fortify tst-memalign tst-mallopt \
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tst-malloc-backtrace tst-malloc-thread-exit \
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tst-malloc-thread-fail tst-malloc-fork-deadlock \
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tst-mallocfork2 \
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tst-mallocfork3 \
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tst-interpose-nothread \
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tst-interpose-thread \
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tst-alloc_buffer \
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tst-free-errno \
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tst-malloc-tcache-leak \
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tst-malloc_info tst-mallinfo2 \
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tst-malloc-too-large \
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tst-malloc-stats-cancellation \
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tst-tcfree1 tst-tcfree2 tst-tcfree3 \
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tst-safe-linking \
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tst-mallocalign1 \
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tests-static := \
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tst-interpose-static-nothread \
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tst-interpose-static-thread
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# Test for the malloc_set_state symbol removed in glibc 2.25.
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ifeq ($(have-GLIBC_2.23)$(build-shared),yesyes)
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tests += tst-mallocstate tst-compathooks-off tst-compathooks-on
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endif
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tests-internal := tst-scratch_buffer
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# The dynarray framework is only available inside glibc.
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tests-internal += \
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tst-dynarray \
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tst-dynarray-fail \
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tst-dynarray-at-fail \
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ifneq (no,$(have-tunables))
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tests += tst-malloc-usable-tunables tst-mxfast
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endif
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tests += $(tests-static)
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test-srcs = tst-mtrace
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# These tests either are run with MALLOC_CHECK_=3 by default or do not work
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# with MALLOC_CHECK_=3 because they expect a specific failure.
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tests-exclude-malloc-check = tst-malloc-check tst-malloc-usable \
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tst-mxfast tst-safe-linking \
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tst-compathooks-off tst-compathooks-on
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# Run all tests with MALLOC_CHECK_=3
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tests-malloc-check = $(filter-out $(tests-exclude-malloc-check),$(tests))
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# -lmcheck needs __malloc_initialize_hook, which was deprecated in 2.24.
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ifeq ($(have-GLIBC_2.23)$(build-shared),yesyes)
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# Tests that don't play well with mcheck. They are either bugs in mcheck or
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# the tests expect specific internal behavior that is changed due to linking to
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# libmcheck.a.
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tests-exclude-mcheck = tst-mallocstate \
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tst-safe-linking tst-malloc-usable \
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tst-malloc-backtrace \
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tst-malloc-fork-deadlock \
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tst-malloc-stats-cancellation \
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tst-malloc-tcache-leak \
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tst-malloc-thread-exit \
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tst-malloc-thread-fail \
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tst-malloc-usable-tunables \
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tst-malloc_info \
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tst-pvalloc-fortify \
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tst-reallocarray \
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tst-compathooks-off tst-compathooks-on
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tests-mcheck = $(filter-out $(tests-exclude-mcheck), $(tests))
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endif
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routines = malloc mcheck mtrace obstack reallocarray \
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scratch_buffer_dupfree \
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scratch_buffer_grow scratch_buffer_grow_preserve \
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scratch_buffer_set_array_size \
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dynarray_at_failure \
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dynarray_emplace_enlarge \
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dynarray_finalize \
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dynarray_resize \
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dynarray_resize_clear \
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alloc_buffer_alloc_array \
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alloc_buffer_allocate \
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alloc_buffer_copy_bytes \
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alloc_buffer_copy_string \
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alloc_buffer_create_failure \
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install-lib := libmcheck.a
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non-lib.a := libmcheck.a
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# Additional libraries.
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extra-libs = libmemusage libc_malloc_debug
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extra-libs-others = $(extra-libs)
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# Helper objects for some tests.
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extra-tests-objs += \
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tst-interpose-aux-nothread.o \
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tst-interpose-aux-thread.o \
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test-extras = \
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tst-interpose-aux-nothread \
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tst-interpose-aux-thread \
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libmemusage-routines = memusage
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libmemusage-inhibit-o = $(filter-out .os,$(object-suffixes))
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libc_malloc_debug-routines = malloc-debug $(sysdep_malloc_debug_routines)
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libc_malloc_debug-inhibit-o = $(filter-out .os,$(object-suffixes))
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$(objpfx)tst-malloc-backtrace: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-exit: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-fail: $(shared-thread-library)
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$(objpfx)tst-mallocfork3: $(shared-thread-library)
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$(objpfx)tst-mallocfork3-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-fork-deadlock: $(shared-thread-library)
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$(objpfx)tst-malloc-stats-cancellation: $(shared-thread-library)
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$(objpfx)tst-malloc-backtrace-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-exit-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-fail-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-fork-deadlock-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-stats-cancellation-mcheck: $(shared-thread-library)
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$(objpfx)tst-mallocfork3-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc-backtrace-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-exit-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc-thread-fail-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc-fork-deadlock-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc-stats-cancellation-malloc-check: $(shared-thread-library)
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# These should be removed by `make clean'.
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extra-objs = mcheck-init.o libmcheck.a
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others-extras = mcheck-init.o
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# Include the cleanup handler.
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aux := set-freeres thread-freeres
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# The Perl script to analyze the output of the mtrace functions.
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ifneq ($(PERL),no)
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install-bin-script = mtrace
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generated += mtrace
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# The Perl script will print addresses and to do this nicely we must know
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# whether we are on a 32 or 64 bit machine.
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ifneq ($(findstring wordsize-32,$(config-sysdirs)),)
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address-width=10
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else
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address-width=18
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endif
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endif
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# Unless we get a test for the availability of libgd which also works
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# for cross-compiling we disable the memusagestat generation in this
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# situation.
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ifneq ($(cross-compiling),yes)
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# If the gd library is available we build the `memusagestat' program.
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ifneq ($(LIBGD),no)
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others: $(objpfx)memusage
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others += memusagestat
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install-bin = memusagestat
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install-bin-script += memusage
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generated += memusagestat memusage
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extra-objs += memusagestat.o
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# The configure.ac check for libgd and its headers did not use $SYSINCLUDES.
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# The directory specified by --with-headers usually contains only the basic
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# kernel interface headers, not something like libgd. So the simplest thing
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# is to presume that the standard system headers will be ok for this file.
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$(objpfx)memusagestat.o: sysincludes = # nothing
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endif
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endif
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# Another goal which can be used to override the configure decision.
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.PHONY: do-memusagestat
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do-memusagestat: $(objpfx)memusagestat
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memusagestat-modules = memusagestat
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cpp-srcs-left := $(memusagestat-modules)
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lib := memusagestat
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include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
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LDLIBS-memusagestat = $(libgd-LDFLAGS) -lgd -lpng -lz -lm
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ifeq ($(run-built-tests),yes)
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ifeq (yes,$(build-shared))
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ifneq ($(PERL),no)
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tests-special += $(objpfx)tst-mtrace.out
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tests-special += $(objpfx)tst-dynarray-mem.out
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tests-special += $(objpfx)tst-dynarray-fail-mem.out
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endif
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endif
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endif
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include ../Rules
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CFLAGS-mcheck-init.c += $(PIC-ccflag)
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CFLAGS-obstack.c += $(uses-callbacks)
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$(objpfx)libmcheck.a: $(objpfx)mcheck-init.o
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-rm -f $@
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$(patsubst %/,cd % &&,$(objpfx)) \
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$(LN_S) $(<F) $(@F)
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lib: $(objpfx)libmcheck.a
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ifeq ($(run-built-tests),yes)
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ifeq (yes,$(build-shared))
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ifneq ($(PERL),no)
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$(objpfx)tst-mtrace.out: tst-mtrace.sh $(objpfx)tst-mtrace
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
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'$(run-program-env)' '$(test-program-prefix-after-env)'; \
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$(evaluate-test)
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endif
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endif
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endif
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tst-malloc-check-ENV = MALLOC_CHECK_=3 \
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LD_PRELOAD=$(objpfx)/libc_malloc_debug.so
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tst-malloc-usable-ENV = MALLOC_CHECK_=3 \
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LD_PRELOAD=$(objpfx)/libc_malloc_debug.so
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tst-malloc-usable-tunables-ENV = GLIBC_TUNABLES=glibc.malloc.check=3 \
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LD_PRELOAD=$(objpfx)/libc_malloc_debug.so
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tst-mxfast-ENV = GLIBC_TUNABLES=glibc.malloc.tcache_count=0:glibc.malloc.mxfast=0
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CPPFLAGS-malloc-debug.c += -DUSE_TCACHE=0
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ifeq ($(experimental-malloc),yes)
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CPPFLAGS-malloc.c += -DUSE_TCACHE=1
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else
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CPPFLAGS-malloc.c += -DUSE_TCACHE=0
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endif
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# Uncomment this for test releases. For public releases it is too expensive.
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#CPPFLAGS-malloc.o += -DMALLOC_DEBUG=1
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sLIBdir := $(shell echo $(slibdir) | sed 's,lib\(\|64\)$$,\\\\$$LIB,')
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$(objpfx)mtrace: mtrace.pl
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rm -f $@.new
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sed -e 's|@PERL@|$(PERL)|' -e 's|@XXX@|$(address-width)|' \
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-e 's|@VERSION@|$(version)|' \
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-e 's|@PKGVERSION@|$(PKGVERSION)|' \
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-e 's|@REPORT_BUGS_TO@|$(REPORT_BUGS_TO)|' $^ > $@.new \
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&& rm -f $@ && mv $@.new $@ && chmod +x $@
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$(objpfx)memusage: memusage.sh
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rm -f $@.new
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sed -e 's|@VERSION@|$(version)|' -e 's|@SLIBDIR@|$(sLIBdir)|' \
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-e 's|@BINDIR@|$(bindir)|' -e 's|@PKGVERSION@|$(PKGVERSION)|' \
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-e 's|@REPORT_BUGS_TO@|$(REPORT_BUGS_TO)|' $^ > $@.new \
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&& rm -f $@ && mv $@.new $@ && chmod +x $@
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# Compile the tests with a flag which suppresses the mallopt call in
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# the test skeleton.
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$(tests:%=$(objpfx)%.o): CPPFLAGS += -DTEST_NO_MALLOPT
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$(objpfx)tst-interpose-nothread: $(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-nothread-mcheck: $(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-nothread-malloc-check: \
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$(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-thread: \
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$(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
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$(objpfx)tst-interpose-thread-mcheck: \
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$(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
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$(objpfx)tst-interpose-thread-malloc-check: \
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$(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
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$(objpfx)tst-interpose-static-nothread: $(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-static-nothread-mcheck: \
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$(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-static-nothread-malloc-check: \
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$(objpfx)tst-interpose-aux-nothread.o
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$(objpfx)tst-interpose-static-thread: \
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$(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
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$(objpfx)tst-interpose-static-thread-mcheck: \
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$(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
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$(objpfx)tst-interpose-static-thread-malloc-check: \
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$(objpfx)tst-interpose-aux-thread.o $(static-thread-library)
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tst-dynarray-ENV = MALLOC_TRACE=$(objpfx)tst-dynarray.mtrace \
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LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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$(objpfx)tst-dynarray-mem.out: $(objpfx)tst-dynarray.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-dynarray.mtrace > $@; \
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$(evaluate-test)
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tst-dynarray-fail-ENV = MALLOC_TRACE=$(objpfx)tst-dynarray-fail.mtrace \
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LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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$(objpfx)tst-dynarray-fail-mem.out: $(objpfx)tst-dynarray-fail.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-dynarray-fail.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-malloc-tcache-leak: $(shared-thread-library)
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$(objpfx)tst-malloc_info: $(shared-thread-library)
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$(objpfx)tst-mallocfork2: $(shared-thread-library)
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$(objpfx)tst-malloc-tcache-leak-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc_info-mcheck: $(shared-thread-library)
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$(objpfx)tst-mallocfork2-mcheck: $(shared-thread-library)
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$(objpfx)tst-malloc-tcache-leak-malloc-check: $(shared-thread-library)
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$(objpfx)tst-malloc_info-malloc-check: $(shared-thread-library)
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$(objpfx)tst-mallocfork2-malloc-check: $(shared-thread-library)
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tst-compathooks-on-ENV = LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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tst-compathooks-on-mcheck-ENV = LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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tst-compathooks-on-malloc-check-ENV = \
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LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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tst-mallocstate-ENV = LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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tst-mallocstate-malloc-check-ENV = LD_PRELOAD=$(objpfx)libc_malloc_debug.so
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# The test needs malloc_get_state/malloc_set_state which is in
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# libc_malloc_debug.so.
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$(objpfx)tst-mallocstate: $(objpfx)libc_malloc_debug.so
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$(objpfx)tst-mallocstate-malloc-check: $(objpfx)libc_malloc_debug.so
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