mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-04-12 14:21:18 +08:00
Code Issues Packages Projects Releases Wiki Activity
glibc/malloc
History
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
..
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