Florian Weimer 85860ad6ea malloc: Do not use MAP_NORESERVE to allocate heap segments ... Address space for heap segments is reserved in a mmap call with MAP_ANONYMOUS | MAP_PRIVATE and protection flags PROT_NONE. This reservation does not count against the RSS limit of the process or system. Backing memory is allocated using mprotect in alloc_new_heap and grow_heap, and at this point, the allocator expects the kernel to provide memory (subject to memory overcommit). The SIGSEGV that might generate due to MAP_NORESERVE (according to the mmap manual page) does not seem to occur in practice, it's always SIGKILL from the OOM killer. Even if there is a way that SIGSEGV could be generated, it is confusing to applications that this only happens for secondary heaps, not for large mmap-based allocations, and not for the main arena. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>		2022-08-15 16:45:40 +02:00
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alloc_buffer_alloc_array.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
alloc_buffer_allocate.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
alloc_buffer_copy_bytes.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
alloc_buffer_copy_string.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
alloc_buffer_create_failure.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
arena.c	malloc: Do not use MAP_NORESERVE to allocate heap segments	2022-08-15 16:45:40 +02:00
Depend	added rt to malloc/Depend [BZ #27132]	2021-02-23 10:04:45 +01:00
dynarray_at_failure.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray_emplace_enlarge.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray_finalize.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray_resize_clear.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray_resize.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray-skeleton.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
dynarray.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
hooks.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
Makefile	build: Properly generate .d dependency files [BZ #28922]	2022-02-25 10:35:45 -08:00
malloc-check.c	malloc: Simplify checked_request2size interface	2022-07-05 11:04:45 +02:00
malloc-debug.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
malloc-internal.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
malloc.c	malloc: Do not use MAP_NORESERVE to allocate heap segments	2022-08-15 16:45:40 +02:00
malloc.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mallocbug.c	Reformat malloc to gnu style.	2014-01-02 09:40:10 +01:00
mcheck-impl.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mcheck-init.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mcheck.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mcheck.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
memusage.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
memusage.sh	Update copyright dates not handled by scripts/update-copyrights.	2022-01-01 11:42:26 -08:00
memusagestat.c	Update copyright dates not handled by scripts/update-copyrights.	2022-01-01 11:42:26 -08:00
morecore.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mtrace-impl.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mtrace.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
mtrace.pl	malloc: Remove LD_TRACE_PRELINKING usage from mtrace	2022-02-10 09:16:13 -03:00
obstack.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
obstack.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
reallocarray.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
scratch_buffer_dupfree.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
scratch_buffer_grow_preserve.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
scratch_buffer_grow.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
scratch_buffer_set_array_size.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
set-freeres.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
thread-freeres.c	stdlib: Add arc4random, arc4random_buf, and arc4random_uniform (BZ #4417)	2022-07-22 11:58:27 -03:00
tst-alloc_buffer.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-calloc.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-compathooks-off.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-compathooks-on.c	Move malloc hooks into a compat DSO	2021-07-22 18:37:59 +05:30
tst-dynarray-at-fail.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-dynarray-fail.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-dynarray-shared.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-dynarray.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-free-errno.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-aux-nothread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-aux-thread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-aux.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-aux.h	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-nothread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-skeleton.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-static-nothread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-static-thread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-interpose-thread.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mallinfo2.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc_info.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc-backtrace.c	Avoid -Wuse-after-free in tests [BZ #26779].	2022-01-26 10:38:23 -07:00
tst-malloc-check.c	Avoid -Wuse-after-free in tests [BZ #26779].	2022-01-26 10:38:23 -07:00
tst-malloc-fork-deadlock.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc-stats-cancellation.c	malloc: Run tst-malloc-stats-cancellation via test-driver.c	2021-04-07 02:35:50 +02:00
tst-malloc-tcache-leak.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc-thread-exit.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc-thread-fail.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc-too-large.c	Avoid -Wuse-after-free in tests [BZ #26779].	2022-01-26 10:38:23 -07:00
tst-malloc-usable-tunables.c	Initialize tunable list with the GLIBC_TUNABLES environment variable	2016-12-31 23:49:24 +05:30
tst-malloc-usable.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-malloc.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mallocalign1.c	malloc: Fix tst-mallocalign1 macro spacing.	2022-02-01 11:05:26 -05:00
tst-mallocfork2.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mallocfork3.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mallocfork.c	Fix malloc tests build with GCC 10.	2019-06-10 22:12:08 +00:00
tst-mallocstate.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mallopt.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-memalign.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mtrace.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mtrace.sh	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-mxfast.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-obstack.c	Avoid -Wuse-after-free in tests [BZ #26779].	2022-01-26 10:38:23 -07:00
tst-posix_memalign.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-pvalloc-fortify.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-pvalloc.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-realloc.c	malloc: Exit early on test failure in tst-realloc	2022-03-10 08:50:51 +01:00
tst-reallocarray.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-safe-linking.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-scratch_buffer.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-tcfree1.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-tcfree2.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-tcfree3.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
tst-trim1.c	* malloc/tst-trim1.c: New file.	2007-12-16 22:57:57 +00:00
tst-valloc.c	Update copyright dates with scripts/update-copyrights	2022-01-01 11:40:24 -08:00
Versions	Move malloc_{g,s}et_state to libc_malloc_debug	2021-07-22 18:38:10 +05:30