RSA_generate_key_ex is crashing when compiled on RHEL6 PPC and executed on RHEL8 for OpenSSL 3.0.1PPC
Tomas Mraz
tomas at openssl.org
Thu Jun 2 09:02:17 UTC 2022
This is crashing inside the getentropy call in glibc or the weak symbol
binding does not work correctly for some reason.
I'd suggest changing the line 359 of
providers/implementations/rands/seeding/rand_unix.c
from:
# if !defined(__DragonFly__) && !defined(__NetBSD__)
to:
# if 0
That might help.
Regards,
Tomas Mraz
On Thu, 2022-06-02 at 12:49 +0530, Minal Patil wrote:
> here is the backtrace with debug.
> Program received signal SIGILL, Illegal instruction.
> 0x0000000010000004 in ?? ()
> Missing separate debuginfos, use: dnf debuginfo-install libgcc-8.3.1-
> 4.5.el8.ppc64le libstdc++-8.3.1-4.5.el8.ppc64le
> (gdb) bt
> #0 0x0000000010000004 in ?? ()
> #1 0x000000001006da60 in syscall_random (buf=0x104a3350, buflen=48)
> at providers/implementations/rands/seeding/rand_unix.c:364
> #2 0x000000001006e3b4 in ossl_pool_acquire_entropy (pool=0x104a3300)
> at providers/implementations/rands/seeding/rand_unix.c:646
> #3 0x0000000010252ca0 in seed_src_generate (vseed=0x10446e90,
> out=0x104a32c0 "", outlen=48, strength=0,
> prediction_resistance=0, adin=0x7fffffffe340 "PoD\020",
> adin_len=8) at providers/implementations/rands/seed_src.c:114
> #4 0x0000000010253124 in seed_get_seed (vseed=0x10446e90,
> pout=0x7fffffffe410, entropy=256, min_len=48,
> max_len=4294967294, prediction_resistance=0, adin=0x7fffffffe340
> "PoD\020", adin_len=8)
> at providers/implementations/rands/seed_src.c:204
> #5 0x000000001032a764 in get_entropy (drbg=0x10446f50,
> pout=0x7fffffffe410, entropy=384, min_len=48, max_len=4294967294,
> prediction_resistance=0) at
> providers/implementations/rands/drbg.c:241
> #6 0x000000001032b140 in ossl_prov_drbg_instantiate
> (drbg=0x10446f50, strength=0, prediction_resistance=0,
> pers=0x10397a88 <ossl_pers_string> "OpenSSL NIST SP 800-90A
> DRBG", perslen=29)
> at providers/implementations/rands/drbg.c:451
> #7 0x000000001024eab8 in drbg_ctr_instantiate_wrapper
> (vdrbg=0x10446f50, strength=0, prediction_resistance=0, pstr=0x0,
> pstr_len=0, params=0x7fffffffe620) at
> providers/implementations/rands/drbg_ctr.c:337
> #8 0x0000000010127aa0 in evp_rand_instantiate_locked
> (ctx=0x1042da90, strength=0, prediction_resistance=0, pstr=0x0,
> pstr_len=0, params=0x7fffffffe620) at crypto/evp/evp_rand.c:505
> #9 0x0000000010127b50 in EVP_RAND_instantiate (ctx=0x1042da90,
> strength=0, prediction_resistance=0, pstr=0x0,
> pstr_len=0, params=0x7fffffffe620) at crypto/evp/evp_rand.c:518
> #10 0x000000001003a988 in rand_new_drbg (libctx=0x0,
> parent=0x1042da60, reseed_interval=256, reseed_time_interval=3600)
> at crypto/rand/rand_lib.c:595
> #11 0x000000001003ab58 in RAND_get0_primary (ctx=0x0) at
> crypto/rand/rand_lib.c:642
> #12 0x000000001003add4 in RAND_get0_private (ctx=0x0) at
> crypto/rand/rand_lib.c:706
> #13 0x0000000010039cd4 in RAND_priv_bytes_ex (ctx=0x0, buf=0x10421f40
> "", num=64, strength=0)
> at crypto/rand/rand_lib.c:333
> #14 0x00000000100a7824 in bnrand (flag=PRIVATE, rnd=0x10420e70,
> bits=512, top=1, bottom=1, strength=0, ctx=0x10420b90)
> at crypto/bn/bn_rand.c:51
> #15 0x00000000100a7db4 in BN_priv_rand_ex (rnd=0x10420e70, bits=512,
> top=1, bottom=1, strength=0, ctx=0x10420b90)
> at crypto/bn/bn_rand.c:122
> #16 0x00000000100a6ae4 in probable_prime (rnd=0x10420e70, bits=512,
> safe=0, mods=0x10420f30, ctx=0x10420b90)
> --Type <RET> for more, q to quit, c to continue without paging--
> at crypto/bn/bn_prime.c:486
> #17 0x00000000100a5c3c in BN_generate_prime_ex2 (ret=0x10420e70,
> bits=512, safe=0, add=0x0, rem=0x0, cb=0x0,
> ctx=0x10420b90) at crypto/bn/bn_prime.c:160
> #18 0x000000001003dce8 in rsa_multiprime_keygen (rsa=0x10411eb0,
> bits=1024, primes=2, e_value=0x10411e70, cb=0x0)
> at crypto/rsa/rsa_gen.c:191
> #19 0x000000001003e71c in rsa_keygen (libctx=0x0, rsa=0x10411eb0,
> bits=1024, primes=2, e_value=0x10411e70, cb=0x0,
> pairwise_test=0) at crypto/rsa/rsa_gen.c:437
> #20 0x000000001003d598 in RSA_generate_multi_prime_key
> (rsa=0x10411eb0, bits=1024, primes=2, e_value=0x10411e70, cb=0x0)
> at crypto/rsa/rsa_gen.c:71
> #21 0x000000001003d434 in RSA_generate_key_ex (rsa=0x10411eb0,
> bits=1024, e_value=0x10411e70, cb=0x0)
> at crypto/rsa/rsa_gen.c:46
> #22 0x0000000010003ae8 in generate_key (keysize=1024,
> pub_key=0x7fffffffef48, pri_key=0x7fffffffef50) at generatekey.c:25
> #23 0x0000000010003da8 in main () at generatekey.c:74
>
> On Thu, Jun 2, 2022 at 12:06 PM Tomas Mraz <tomas at openssl.org> wrote:
> > Can you please try to build the openssl with debug information (-d
> > on
> > Configure command line)? To see whether the backtrace will contain
> > more
> > information.
> >
> > Tomas Mraz
> >
> > On Thu, 2022-06-02 at 11:09 +0530, Minal Patil wrote:
> > > Hello All,
> > >
> > > I am trying to use RSA_generate_key_ex function to generate the
> > > RSA
> > > key pairs on RHEL 7.2 PPCle. I am observing crash when i link the
> > > source code with Openssl 3.0 whereas same works if i link with
> > > Openssl 1.0.2
> > >
> > > Below is configure command used for compiling openssl
> > > ./Configure no-shared threads --
> > > prefix=/home/testuser/OpenSSL/Build
> > -
> > > -openssldir=/home/testuser/OpenSSL/Build --libdir=lib linux-
> > > ppc64le
> > -
> > > Wa,--noexecstack
> > >
> > > I am attaching the source code I am using for reference.
> > > Below is stack trace observed
> > >
> > > Program received signal SIGILL, Illegal instruction.
> > > #0 0x0000000010000004 in ?? ()
> > > #1 0x000000001005afdc in ossl_pool_acquire_entropy ()
> > > #2 0x00000000101fed14 in seed_get_seed ()
> > > #3 0x00000000102be844 in get_entropy ()
> > > #4 0x00000000102bee8c in ossl_prov_drbg_instantiate ()
> > > #5 0x00000000101f9b2c in drbg_ctr_instantiate_wrapper ()
> > > #6 0x00000000100ff2e0 in EVP_RAND_instantiate ()
> > > #7 0x0000000010031c18 in rand_new_drbg ()
> > > #8 0x0000000010032bd0 in RAND_get0_primary ()
> > > #9 0x00000000100333f8 in RAND_get0_private ()
> > > #10 0x0000000010033558 in RAND_priv_bytes_ex ()
> > > #11 0x00000000100926cc in BN_priv_rand_ex ()
> > > #12 0x0000000010090b78 in BN_generate_prime_ex2 ()
> > > #13 0x0000000010035a90 in RSA_generate_multi_prime_key ()
> > > #14 0x00000000100361b4 in RSA_generate_key_ex ()
> > > #15 0x00000000100048b8 in generate_key (keysize=1024,
> > > pub_key=0x7fffffffef38, pri_key=0x7fffffffef40) at
> > > generatekey.c:25
> > > #16 0x0000000010004b78 in main () at generatekey.c:74
> > >
> > > I am compiling both 1.0.2j and 3.0 with same configure command
> > > and
> > on
> > > the same machine(i.e. RHEL 7).
> > >
> > > Any suggestion or pointer would be highly helpful.
> >
> > --
> > Tomáš Mráz, OpenSSL
> >
> >
>
>
--
Tomáš Mráz, OpenSSL
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