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POPointer corruption when passed from a different file Fedora 17
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20536761
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20544477
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2013-12-12T06:46:27.503
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2013-12-12T13:10:24.567
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2013-12-12T12:32:03.803
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1663533
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1663533
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text
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Has anyone come across this issue of pointer getting corrupted in Fedora Core 17 64bit <pre><code>Linux (none) 3.3.4-5.fc17.x86_64 #1 </code></pre> gcc <code>gcc (GCC) 4.7.2 20120921 (Red Hat 4.7.2-2)</code> For instance I have files A.c containing function aaa() returning or accepting some pointer and B.c has a function bbb() returning or accepting some pointer. In my scenario I am passing a context pointer from bbb() to aaa() and here is what i pass <pre><code>values e n d 0x2b440c0 0x2b4a190 0x2b57db0 </code></pre> and here is what I receive in function aaa() <pre><code>values e n d 0x2b440c000000000 0x2b57db000000000 0x0 </code></pre> I am not running any compiler optimization flags on this. Although if I maintain both the functions in one file, things work properly as expected. Have added some code here that might help <pre><code>file: src/enc/encrypt.c function PopulateEncryptionKeys dataEncrypt->stRsa = RSA_new(); ---> this is ok 0x21d0440 if(dataEncrypt->stRsa == NULL) { return FALSE; } dataEncrypt->stRsa->e = BN_bin2bn("<hex data>", 1, dataEncrypt->stRsa->e); dataEncrypt->stRsa->n = BN_bin2bn(dataEncrypt->m_nPublicKey, val, dataEncrypt->stRsa->n); dataEncrypt->stRsa->d = BN_bin2bn(dataEncrypt->m_nPrivateExponent, val, dataEncrypt->stRsa->d); ----> these are ok RSA_blinding_off(dataEncrypt->stRsa); file: src/enc/encrypt.c function: Decipher keyRetVal = RSAPrivateDecrypt(nDecryptedMessage,nDataBuffer,m_dataEncryption->stRsa,val,var); Uptill this the values of e n and d above are values e n d 0x2364090 0x23640d0 0x23a2c10 This function calls another function part of crypto wraper, which inturn is supposed to to call BN_bn2bin file: src/crypto/wrapper.c function: RSAPrivateDecrypt int RSAPrivateDecrypt(unsigned char *decryptedBuffer,unsigned char *data, RSA* rsa, int flen, int reverseKeyData) RSAPrivateDecrypt: rsa is 0x20cc440 e n d 0x229ec1000000000 0x226009000000000 (nil) </code></pre> Any thoughts on this? Appreciate, Thanks
Tags
<c><gcc><fedora><corruption><memory-corruption>
Title
Pointer corruption when passed from a different file Fedora 17
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1. PO
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1. PTQuestion
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1. USuser1663533
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1. USuser1663533
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