This is my code:
#include <openssl/rsa.h>
int main(){
BIGNUM *bne = NULL;
unsigned long e = RSA_F4;
RSA *r = NULL;
bne = BN_new();
BN_set_word(bne,e);
r = RSA_new();
int ret = RSA_generate_key_ex(r, 1024, bne, NULL);
const BIGNUM *n = NULL;
const BIGNUM *d = NULL;
RSA_get0_key(r, &n, NULL, &d);
BN_print_fp(stdout, n);
RSA_free(r);
BN_free(bne);
return 0;
}
Here is how I compiled it:
gcc -Wall -Wextra -Wl,-rpath,/home/roman/Dropbox/uni/RSA/my_work/library/lib -g sharedLibraryTest.c -o sharedLibraryTest -I/home/roman/Dropbox/uni/RSA/my_work/library/include - L/home/roman/Dropbox/uni/RSA/my_work/library/lib -lcrypto -ldl
Everything is fine when I run it usually with ./sharedLibraryTest. However, when I run it in Valgrind, it says Illegal instruction (core dumped), and there are some memory leaks that I do not understand (I do not see them).
Do you know what that means? I am running OpenSSL 1_1_0e.
Here is the output of Valgrind.
$ valgrind ./sharedLibraryTest
==4500== Memcheck, a memory error detector
==4500== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==4500== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==4500== Command: ./sharedLibraryTest
==4500==
vex amd64->IR: unhandled instruction bytes: 0x48 0xF 0xC7 0xF0 0x72 0x2 0xE2 0xF8
vex amd64->IR: REX=1 REX.W=1 REX.R=0 REX.X=0 REX.B=0
vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=0F
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0
==4500== valgrind: Unrecognised instruction at address 0x5026fa5.
==4500== at 0x5026FA5: OPENSSL_ia32_rdrand (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4FC2B12: rand_bytes (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4EF698E: BN_rand (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4EF5430: BN_generate_prime_ex (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4FCA616: RSA_generate_key_ex (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x400963: main (sharedLibraryTest.c:12)
==4500== Your program just tried to execute an instruction that Valgrind
==4500== did not recognise. There are two possible reasons for this.
==4500== 1. Your program has a bug and erroneously jumped to a non-code
==4500== location. If you are running Memcheck and you just saw a
==4500== warning about a bad jump, it probably your program fault.
==4500== 2. The instruction is legitimate but Valgrind doesn't handle it,
==4500== i.e. it Valgrind fault. If you think this is the case or
==4500== you are not sure, please let us know and we'll try to fix it.
==4500== Either way, Valgrind will now raise a SIGILL signal which will
==4500== probably kill your program.
==4500==
==4500== Process terminating with default action of signal 4 (SIGILL)
==4500== Illegal opcode at address 0x5026FA5
==4500== at 0x5026FA5: OPENSSL_ia32_rdrand (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4FC2B12: rand_bytes (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4EF698E: BN_rand (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4EF5430: BN_generate_prime_ex (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x4FCA616: RSA_generate_key_ex (in /home/roman/Dropbox/uni/RSA/my_work/library/lib/libcrypto.so.1.1)
==4500== by 0x400963: main (sharedLibraryTest.c:12)
==4500==
==4500== HEAP SUMMARY:
==4500== in use at exit: 6,216 bytes in 32 blocks
==4500== total heap usage: 146 allocs, 114 frees, 14,880 bytes allocated
==4500==
==4500== LEAK SUMMARY:
==4500== definitely lost: 0 bytes in 0 blocks
==4500== indirectly lost: 0 bytes in 0 blocks
==4500== possibly lost: 0 bytes in 0 blocks
==4500== still reachable: 6,216 bytes in 32 blocks
==4500== suppressed: 0 bytes in 0 blocks
==4500== Rerun with --leak-check=full to see details of leaked memory
==4500==
==4500== For counts of detected and suppressed errors, rerun with: -v
==4500== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Illegal instruction (core dumped)