Hello,
Starting from the rsa choice "rsa2048", there is crash due to segment fault
when running speed. RSA512 and rsa1024 doesn't have this issue.
Following is the call stacks, registers info when crash happened. It shows that
the register %rbp is zero at that point. The value of %rbp is set by
instruction "movq %xmm2,$nptr " in label .L8x_no_tail. I don't understand
how the algorithm in the x86_64-mont5.s works. So i have no idea why a zero
value of %xmm2 was moved to %rbp at that point. Please help have a look.
(wrdbg) bt
#0 0x0000000000242d23 at __bn_sqrx8x_reduction+0x6c
#1 0x000000000023f96b at bn_sqr8x_mont+0xcb
#2 0x000000000023b014 at bn_mul_mont_fixed_top+0x64
#3 0x00000000002b61f5 at BN_mod_exp_mont+0x445
#4 0x0000000000281b1f at rsa_ossl_public_decrypt+0x28f
#5 0x0000000000285c0a at int_rsa_verify+0x8a
#6 0x0000000000285f92 at RSA_verify+0x32
#7 0x0000000000217963 at RSA_verify_loop+0x53
#8 0x00000000002176d8 at run_benchmark+0x108
#9 0x0000000000212e80 at speed_main+0x1400
#10 0x0000000000201411 in main (argc=1, argv=0x68ff20) at rtp.c:33
#11 0x0000000000201073 at _start+0x72
(wrdbg) info registers
rax 0x0000000000000000 0
rdx 0x68f8f88932a43dc0 7564068842312580544
rcx 0xfffffffffffffff8 18446744073709551608
rbx 0x123959978a8b3640 1313179273754523200
rsi 0x0000000000000000 0
rdi 0x0000000000688430 6849584
rbp 0x0000000000000000 0
rsp 0x00000000006883b8 6849464
r8 0x123959978a8b3640 1313179273754523200
r9 0xf7a5b45905344009 17844867392957857801
r10 0x73dbc32a132b324b 8348480919738987083
r11 0x37cda4961a791379 4021051006907913081
r12 0x701103ae9d18bf8a 8075239655346847626
r13 0xbfbd1a5d2ab85477 13816228219293553783
r14 0x3f3610a53ecd4756 4554846375041124182
r15 0xea5e26bc1a343a39 16887978242021276217
rip 0x0000000000242d23 2370851 PC
eflags 0x00000246 582 [ pf zf if ]
fpu None
xmm None
__bn_sqrx8x_reduction:
0000000000242cb7: xor eax, eax
0000000000242cb9: mov rbx, qword ptr [rsp+0x28]
0000000000242cbe: mov rdx, qword ptr [rsp+0x38]
0000000000242cc3: lea rcx, ptr [rbp+r9*1-0x40]
0000000000242cc8: mov qword ptr [rsp+0x8], rcx
0000000000242ccd: mov qword ptr [rsp+0x10], rdi
0000000000242cd2: lea rdi, ptr [rsp+0x38]
0000000000242cd7: jmp 0x242ce0 <__bn_sqrx8x_reduction+41>
0000000000242cd9: nop dword ptr [rax], eax
0000000000242ce0: mov r9, qword ptr [rdi+0x8]
0000000000242ce4: mov r10, qword ptr [rdi+0x10]
0000000000242ce8: mov r11, qword ptr [rdi+0x18]
0000000000242cec: mov r12, qword ptr [rdi+0x20]
0000000000242cf0: mov r8, rdx
0000000000242cf3: imul rdx, rbx
0000000000242cf7: mov r13, qword ptr [rdi+0x28]
0000000000242cfb: mov r14, qword ptr [rdi+0x30]
0000000000242cff: mov r15, qword ptr [rdi+0x38]
0000000000242d03: mov qword ptr [rsp+0x20], rax
0000000000242d08: lea rdi, ptr [rdi+0x40]
0000000000242d0c: xor rsi, rsi
0000000000242d0f: mov rcx, -8
0000000000242d16: jmp 0x242d20 <__bn_sqrx8x_reduction+105>
0000000000242d18: nop dword ptr [rax+rax*1], eax
0000000000242d20: mov rbx, r8
0000000000242d23: mulx r8, rax, qword ptr [rbp]
0000000000242d29: adcx rax, rbx
0000000000242d2f: adox r8, r9
L8x_no_tail:
adc 8*0($tptr),%r8
adc 8*1($tptr),%r9
adc 8*2($tptr),%r10
adc 8*3($tptr),%r11
adc 8*4($tptr),%r12
adc 8*5($tptr),%r13
adc 8*6($tptr),%r14
adc 8*7($tptr),%r15
adc \$0,%rax # top-most carry
mov -8($nptr),%rcx # np[num-1]
xor $carry,$carry
movq %xmm2,$nptr # restore $nptr
mov %r8,8*0($tptr) # store top 512 bits
mov %r9,8*1($tptr)
movq %xmm3,$num # $num is %r9, can't be moved upwards
configdata.pm --dump:
Command line (with current working directory = .):
/usr/bin/perl ../Configure vxworks-x86-64 no-weak-ssl-ciphers no-aria
no-blake2 no-camellia no-chacha no-cmac no-md2 no-md4 no-mdc2 no-ocb
no-poly1305 no-rc2 no-rc5 no-scrypt no-seed no-siphash no-sm2 no-sm3 no-sm4
no-whirlpool no-autoerrinit no-comp no-sctp no-srtp --with-rand-seed=none
-DOPENSSL_SYS_VXWORKS_SUPPORT -DVXWORKS_USER_SPACE -fPIC
Perl information:
/usr/bin/perl
5.22.1 for x86_64-linux-gnu-thread-multi
Enabled features:
asm
async
autoalginit
autoload-config
bf
capieng
cast
cms
ct
deprecated
des
dgram
dh
dsa
dso
dtls
dynamic-engine
ec
ec2m
ecdh
ecdsa
engine
err
filenames
gost
hw(-.+)?
idea
multiblock
nextprotoneg
ocsp
pic
posix-io
psk
rc4
rdrand
rfc3779
rmd160
shared
sock
srp
sse2
ssl
static-engine
stdio
tests
tls
ts
ui-console
tls1
tls1-method
tls1_1
tls1_1-method
tls1_2
tls1_2-method
tls1_3
dtls1
dtls1-method
dtls1_2
dtls1_2-method
Disabled features:
afalgeng [not-linux]
aria [option] OPENSSL_NO_ARIA (skip crypto/aria)
asan [default] OPENSSL_NO_ASAN
autoerrinit [option] OPENSSL_NO_AUTOERRINIT
blake2 [option] OPENSSL_NO_BLAKE2 (skip crypto/blake2)
camellia [option] OPENSSL_NO_CAMELLIA (skip
crypto/camellia)
chacha [option] OPENSSL_NO_CHACHA (skip crypto/chacha)
cmac [option] OPENSSL_NO_CMAC (skip crypto/cmac)
comp [option] OPENSSL_NO_COMP (skip crypto/comp)
crypto-mdebug [default] OPENSSL_NO_CRYPTO_MDEBUG
crypto-mdebug-backtrace [default] OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
devcryptoeng [default] OPENSSL_NO_DEVCRYPTOENG
ec_nistp_64_gcc_128 [default] OPENSSL_NO_EC_NISTP_64_GCC_128
egd [default] OPENSSL_NO_EGD
external-tests [default] OPENSSL_NO_EXTERNAL_TESTS
fuzz-libfuzzer [default] OPENSSL_NO_FUZZ_LIBFUZZER
fuzz-afl [default] OPENSSL_NO_FUZZ_AFL
heartbeats [default] OPENSSL_NO_HEARTBEATS
makedepend [unavailable]
md2 [option] OPENSSL_NO_MD2 (skip crypto/md2)
md4 [option] OPENSSL_NO_MD4 (skip crypto/md4)
mdc2 [option] OPENSSL_NO_MDC2 (skip crypto/mdc2)
msan [default] OPENSSL_NO_MSAN
ocb [option] OPENSSL_NO_OCB
poly1305 [option] OPENSSL_NO_POLY1305 (skip
crypto/poly1305)
rc2 [option] OPENSSL_NO_RC2 (skip crypto/rc2)
rc5 [option] OPENSSL_NO_RC5 (skip crypto/rc5)
scrypt [option] OPENSSL_NO_SCRYPT
sctp [option] OPENSSL_NO_SCTP
seed [option] OPENSSL_NO_SEED (skip crypto/seed)
siphash [option] OPENSSL_NO_SIPHASH (skip
crypto/siphash)
sm2 [option] OPENSSL_NO_SM2 (skip crypto/sm2)
sm3 [option] OPENSSL_NO_SM3 (skip crypto/sm3)
sm4 [option] OPENSSL_NO_SM4 (skip crypto/sm4)
srtp [option] OPENSSL_NO_SRTP
ssl-trace [default] OPENSSL_NO_SSL_TRACE
threads [unavailable]
ubsan [default] OPENSSL_NO_UBSAN
unit-test [default] OPENSSL_NO_UNIT_TEST
whirlpool [option]
weak-ssl-ciphers [option] OPENSSL_NO_WEAK_SSL_CIPHERS
zlib [default]
zlib-dynamic [default]
ssl3 [default] OPENSSL_NO_SSL3
ssl3-method [default] OPENSSL_NO_SSL3_METHOD
Config target attributes:
AR => "ar",
ARFLAGS => "r",
CC => "dummy",
CFLAGS => "",
HASHBANGPERL => "/usr/bin/env perl",
RANLIB => "ranlib",
RC => "windres",
aes_asm_src => "aes-x86_64.s vpaes-x86_64.s bsaes-x86_64.s aesni-x86_64.s
aesni-sha1-x86_64.s aesni-sha256-x86_64.s aesni-mb-x86_64.s",
aes_obj => "aes-x86_64.o vpaes-x86_64.o bsaes-x86_64.o aesni-x86_64.o
aesni-sha1-x86_64.o aesni-sha256-x86_64.o aesni-mb-x86_64.o",
apps_aux_src => "",
apps_init_src => "",
apps_obj => "",
bf_asm_src => "bf_enc.c",
bf_obj => "bf_enc.o",
bn_asm_src => "asm/x86_64-gcc.c x86_64-mont.s x86_64-mont5.s x86_64-gf2m.s
rsaz_exp.c rsaz-x86_64.s rsaz-avx2.s",
bn_obj => "asm/x86_64-gcc.o x86_64-mont.o x86_64-mont5.o x86_64-gf2m.o
rsaz_exp.o rsaz-x86_64.o rsaz-avx2.o",
bn_ops => "SIXTY_FOUR_BIT_LONG",
build_file => "Makefile",
build_scheme => [ "unified", "unix" ],
cast_asm_src => "c_enc.c",
cast_obj => "c_enc.o",
cflags => "",
chacha_asm_src => "chacha-x86_64.s",
chacha_obj => "chacha-x86_64.o",
cmll_asm_src => "cmll-x86_64.s cmll_misc.c",
cmll_obj => "cmll-x86_64.o cmll_misc.o",
cppflags => "\$(VSB_CONFIG_FILE_MACRO)",
cpuid_asm_src => "x86_64cpuid.s",
cpuid_obj => "x86_64cpuid.o",
defines => [ ],
des_asm_src => "des_enc.c fcrypt_b.c",
des_obj => "des_enc.o fcrypt_b.o",
disable => [ ],
dso_extension => ".so",
ec_asm_src => "ecp_nistz256.c ecp_nistz256-x86_64.s x25519-x86_64.s",
ec_obj => "ecp_nistz256.o ecp_nistz256-x86_64.o x25519-x86_64.o",
enable => [ ],
exe_extension => "",
includes => [ ],
keccak1600_asm_src => "keccak1600-x86_64.s",
keccak1600_obj => "keccak1600-x86_64.o",
lflags => "",
lib_cflags => "",
lib_cppflags => "",
lib_defines => [ ],
md5_asm_src => "md5-x86_64.s",
md5_obj => "md5-x86_64.o",
modes_asm_src => "ghash-x86_64.s aesni-gcm-x86_64.s",
modes_obj => "ghash-x86_64.o aesni-gcm-x86_64.o",
module_cflags => "",
module_cxxflags => "",
module_ldflags => "-shared",
padlock_asm_src => "e_padlock-x86_64.s",
padlock_obj => "e_padlock-x86_64.o",
poly1305_asm_src => "poly1305-x86_64.s",
poly1305_obj => "poly1305-x86_64.o",
rc4_asm_src => "rc4-x86_64.s rc4-md5-x86_64.s",
rc4_obj => "rc4-x86_64.o rc4-md5-x86_64.o",
rc5_asm_src => "rc5_enc.c",
rc5_obj => "rc5_enc.o",
rmd160_asm_src => "",
rmd160_obj => "",
sha1_asm_src => "sha1-x86_64.s sha256-x86_64.s sha512-x86_64.s
sha1-mb-x86_64.s sha256-mb-x86_64.s",
sha1_obj => "sha1-x86_64.o sha256-x86_64.o sha512-x86_64.o sha1-mb-x86_64.o
sha256-mb-x86_64.o",
shared_cflag => "",
shared_defines => [ ],
shared_extension => ".so.\$(SHLIB_VERSION_NUMBER)",
shared_extension_simple => ".so",
shared_ldflag => "-shared",
shared_rcflag => "",
shared_target => "dummy",
sys_id => "VXWORKS",
thread_defines => [ ],
thread_scheme => "(unknown)",
unistd => "<unistd.h>",
uplink_aux_src => "",
uplink_obj => "",
wp_asm_src => "wp-x86_64.s",
wp_obj => "wp-x86_64.o",
Recorded environment:
AR =
BUILDFILE =
CC =
CROSS_COMPILE =
CXX =
HASHBANGPERL =
OPENSSL_LOCAL_CONFIG_DIR =
PERL =
RANLIB =
RC =
WINDRES =
__CNF_CFLAGS =
__CNF_CPPDEFINES =
__CNF_CPPFLAGS =
__CNF_CPPINCLUDES =
__CNF_CXXFLAGS =
__CNF_LDFLAGS =
__CNF_LDLIBS =
Makevars:
AR = ar
ARFLAGS = r
CC = dummy
CFLAGS = -fPIC
CPPDEFINES = OPENSSL_SYS_VXWORKS_SUPPORT VXWORKS_USER_SPACE
CPPFLAGS =
CPPINCLUDES =
CXXFLAGS = -fPIC
HASHBANGPERL = /usr/bin/env perl
LDFLAGS =
LDLIBS =
PERL = /usr/bin/perl
RANLIB = ranlib
RC = windres
NOTE: These variables only represent the configuration view. The build file
template may have processed these variables further, please have a look at the
build file for more exact data:
Makefile
build file:
Makefile
build file templates:
../Configurations/common0.tmpl
../Configurations/unix-Makefile.tmpl
../Configurations/common.tmpl
Thanks,
Wenbin
