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238032ead6
glibc/sysdeps/x86_64
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Szabolcs Nagy 238032ead6 aarch64: enforce >=64K guard size [BZ #26691] 
There are several compiler implementations that allow large stack
allocations to jump over the guard page at the end of the stack and
corrupt memory beyond that. See CVE-2017-1000364.

Compilers can emit code to probe the stack such that the guard page
cannot be skipped, but on aarch64 the probe interval is 64K by default
instead of the minimum supported page size (4K).

This patch enforces at least 64K guard on aarch64 unless the guard
is disabled by setting its size to 0.  For backward compatibility
reasons the increased guard is not reported, so it is only observable
by exhausting the address space or parsing /proc/self/maps on linux.

On other targets the patch has no effect. If the stack probe interval
is larger than a page size on a target then ARCH_MIN_GUARD_SIZE can
be defined to get large enough stack guard on libc allocated stacks.

The patch does not affect threads with user allocated stacks.

Fixes bug 26691.
2020-10-02 09:57:44 +01:00
..
64
fpu x86: Install <sys/platform/x86.h> [BZ #26124] 2020-09-11 17:20:52 -07:00
multiarch x86: Install <sys/platform/x86.h> [BZ #26124] 2020-09-11 17:20:52 -07:00
nptl aarch64: enforce >=64K guard size [BZ #26691] 2020-10-02 09:57:44 +01:00
x32 Remove unused floating-point configuration from gmp-impl.h. 2020-04-28 15:05:09 +00:00
____longjmp_chk.S
__longjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
_mcount.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
abort-instr.h
add_n.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
addmul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bsd-_setjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bsd-setjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bzero.S
configure x86-64: Compile branred.c with -mprefer-vector-width=128 [BZ #24603] 2019-07-24 14:48:43 -07:00
configure.ac x86-64: Compile branred.c with -mprefer-vector-width=128 [BZ #24603] 2019-07-24 14:48:43 -07:00
crti.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-irel.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-machine.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-runtime.h dl-runtime: reloc_{offset,index} now functions arch overide'able 2020-06-05 13:45:46 -07:00
dl-tls.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-tls.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-tlsdesc.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-tlsdesc.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-trampoline.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ffs.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ffsll.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
htonl.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ifuncmain8.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ifuncmod8.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Implies Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
isa.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
l10nflist.c
link-defines.sym
locale-defines.sym
localplt.data ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
lshift.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Makefile x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
memchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy_chk.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy.S X86-64: Remove previous default/SSE2/AVX2 memcpy/memmove 2016-06-08 13:58:08 -07:00
memmove_chk.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mempcpy_chk.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mempcpy.S X86-64: Remove previous default/SSE2/AVX2 memcpy/memmove 2016-06-08 13:58:08 -07:00
memrchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset_chk.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memusage.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mp_clz_tab.c
mul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
preconfigure
preconfigure.ac
rawmemchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rshift.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rtld-offsets.sym x86-64: Align the stack in __tls_get_addr [BZ #21609] 2017-07-06 04:43:20 -07:00
sched_cpucount.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
setjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stack-aliasing.h
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
start.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stpcpy.S
strcasecmp_l-nonascii.c Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
strcasecmp_l.S
strcasecmp.S
strcat.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchrnul.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcpy.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcspn.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strlen.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase_l-nonascii.c Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
strncase_l.S
strncase.S
strncmp.S
strnlen.S
strpbrk.S x86-64: Implement strcspn/strpbrk/strspn IFUNC selectors in C 2017-06-15 08:59:05 -07:00
strrchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strspn.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sub_n.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
submul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tls_get_addr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tls-macros.h
tlsdesc.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tlsdesc.sym x86-64: Align the stack in __tls_get_addr [BZ #21609] 2017-07-06 04:43:20 -07:00
tst-audit3.c
tst-audit4-aux.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-audit4.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-audit5.c
tst-audit6.c Modify several tests to use test-skeleton.c 2015-07-15 15:10:23 +05:30
tst-audit7.c
tst-audit10-aux.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-audit10.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-audit.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-auditmod3a.c
tst-auditmod3b.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod4a.c
tst-auditmod4b.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod5a.c
tst-auditmod5b.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod6a.c
tst-auditmod6b.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod6c.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod7a.c
tst-auditmod7b.c Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
tst-auditmod10a.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-auditmod10b.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-avx512-aux.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-avx512.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-avx512mod.c x86-64: Verify that _dl_runtime_resolve preserves vector registers 2017-02-09 12:19:58 -08:00
tst-avx-aux.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-avx.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-avxmod.c x86-64: Verify that _dl_runtime_resolve preserves vector registers 2017-02-09 12:19:58 -08:00
tst-mallocalign1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-platform-1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-platformmod-1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-platformmod-2.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-quad1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-quad1pie.c
tst-quad2.c
tst-quad2pie.c
tst-quadmod1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-quadmod1pie.S
tst-quadmod2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-quadmod2pie.S
tst-split-dynreloc.c Fix dynamic linker issue with bind-now 2015-08-19 05:37:01 -07:00
tst-split-dynreloc.lds Fix dynamic linker issue with bind-now 2015-08-19 05:37:01 -07:00
tst-sse.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-ssemod.c x86-64: Verify that _dl_runtime_resolve preserves vector registers 2017-02-09 12:19:58 -08:00
tst-stack-align.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-x86_64-1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-x86_64mod-1.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Versions Move __fentry__ version definition to sysdeps/{i386,x86_64} 2018-08-10 09:07:44 +02:00
wcschr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcscmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcslen.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcsrchr.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemset_chk.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemset.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
wordcopy.c X86-64: Add dummy memcopy.h and wordcopy.c 2016-06-09 04:38:34 -07:00