I'm not creating any MFC applications on linux. the client is for Windows platform, but as I said I don't think the client matters. I also wrote some client emulation on linux that emulates the behavior of the MFC clients and the server still crashes.
----- Original Message ---- From: Kyle Hamilton <[EMAIL PROTECTED]> To: openssl-users@openssl.org Sent: Friday, April 18, 2008 2:33:03 PM Subject: Re: Segmentation fault in SSL_read() (Re-post) How are you creating an MFC executable on Linux? -Kyle H On Fri, Apr 18, 2008 at 4:29 AM, Ion Scerbatiuc <[EMAIL PROTECTED]> wrote: > > Thanks for your reply. > > I use OpenSSL 0.9.8g 19 Oct 2007. > I compiled the library from source on a Redhat Linux Enterprise. The output > of `uname -a`: > Linux www.mysite.com 2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 12 17:59:08 EDT 2007 > i686 i686 i386 GNU/Linux > The compiler used was the gnu c compiler, I think (I used the default steps > in compiling)... > The same compiler was used with my project... > The linker I used with my main executable is g++. > > I provided the following locking functions: > ------------------------------------------------------------------------------------ > static void locking_function(int mode, int n, const char *file, int line) > static unsigned long id_function(void) > ------------------------------------------------------------------------------------ > > Before calling SSL_read I assured that the buffer (used as the second > parameter) was allocated. > > Any other suggestions or questions? > > Thanks for your time! > Regards, > Scerbatiuc Ion > > > ----- Original Message ---- > From: Kyle Hamilton <[EMAIL PROTECTED]> > To: openssl-users@openssl.org > > Sent: Friday, April 18, 2008 2:14:03 PM > Subject: Re: Segmentation fault in SSL_read() (Re-post) > > My initial idea would be that you're passing in an invalid pointer to > SSL_read. Does this happen with, say, openssl s_client? > > Remember a couple of things: > > 1) You MUST use the proper version of the library (debug or release) > with the appropriate build setting in your project (debug or release). > 2) You MUST provide the appropriate locking functions. > 3) You MUST provide the appropriate malloc that your main binary is using. > > (This is all stuff documented in the FAQ.) > > How did you obtain this version of the library? What version of the > library code is it? What compiler are you using for your main > executable? What compiler was used to create the library? What > linker was used for all of it? > > -Kyle H > > On Fri, Apr 18, 2008 at 3:15 AM, Ion Scerbatiuc <[EMAIL PROTECTED]> > wrote: > > > > Sorry for the fist post. It seems like I have some problems with the other > > email client. A new try :) > > I have wrote a multi-threaded server (UNIX) and I use OpenSSL for > encrypting > > communication between > > the server and the client (the client is an MFC application, but I think > > this > > doesn't matter...). > > Server is running fine but randomly it crashes and every time in > SSL_read() > > method. > > Here is a snippet from one of the core dumps: > > ------------------------------------------------------------------------ > > Core was generated by `/opt/whozin/wnsd_test -l'. > > Program terminated with signal 11, Segmentation fault. > > Reading symbols from /usr/lib/libccext2-1.5.so.0...done. > > Loaded symbols for /usr/lib/libccext2-1.5.so.0 > > Reading symbols from /usr/lib/libccgnu2-1.5.so.0...done. > > Loaded symbols for /usr/lib/libccgnu2-1.5.so.0 > > Reading symbols from /usr/lib/libboost_regex.so.1...done. > > Loaded symbols for /usr/lib/libboost_regex.so.1 > > Reading symbols from /lib/tls/libpthread.so.0...done. > > Loaded symbols for /lib/tls/libpthread.so.0 > > Reading symbols from /usr/lib/libdaemon.so.0...done. > > Loaded symbols for /usr/lib/libdaemon.so.0 > > Reading symbols from /lib/libssl.so.4...done. > > Loaded symbols for /lib/libssl.so.4 > > Reading symbols from /lib/libcrypto.so.4...done. > > Loaded symbols for /lib/libcrypto.so.4 > > Reading symbols from /usr/lib/liblog4cxx.so.9...done. > > Loaded symbols for /usr/lib/liblog4cxx.so.9 > > Reading symbols from /usr/lib/libstdc++.so.6...done. > > Loaded symbols for /usr/lib/libstdc++.so.6 > > Reading symbols from /lib/tls/libm.so.6...done. > > Loaded symbols for /lib/tls/libm.so.6 > > Reading symbols from /lib/libgcc_s.so.1...done. > > Loaded symbols for /lib/libgcc_s.so.1 > > Reading symbols from /lib/tls/libc.so.6...done. > > Loaded symbols for /lib/tls/libc.so.6 > > Reading symbols from /lib/tls/librt.so.1...done. > > Loaded symbols for /lib/tls/librt.so.1 > > Reading symbols from /usr/lib/libz.so.1...done. > > Loaded symbols for /usr/lib/libz.so.1 > > Reading symbols from /lib/ld-linux.so.2...done. > > Loaded symbols for /lib/ld-linux.so.2 > > Reading symbols from /usr/lib/libgssapi_krb5.so.2...done. > > Loaded symbols for /usr/lib/libgssapi_krb5.so.2 > > Reading symbols from /usr/lib/libkrb5.so.3...done. > > Loaded symbols for /usr/lib/libkrb5.so.3 > > Reading symbols from /lib/libcom_err.so.2...done. > > Loaded symbols for /lib/libcom_err.so.2 > > Reading symbols from /usr/lib/libk5crypto.so.3...done. > > Loaded symbols for /usr/lib/libk5crypto.so.3 > > Reading symbols from /lib/libresolv.so.2...done. > > Loaded symbols for /lib/libresolv.so.2 > > Reading symbols from /lib/libdl.so.2...done. > > Loaded symbols for /lib/libdl.so.2 > > Reading symbols from /usr/lib/libxml2.so.2...done. > > Loaded symbols for /usr/lib/libxml2.so.2 > > Reading symbols from /lib/libnss_files.so.2...done. > > Loaded symbols for /lib/libnss_files.so.2 > > Reading symbols from /lib/libnss_dns.so.2...done. > > Loaded symbols for /lib/libnss_dns.so.2 > > #0 0x00c9b7a0 in SSL_read () from /lib/libssl.so.4 > > (gdb) bt > > #0 0x00c9b7a0 in SSL_read () from /lib/libssl.so.4 > > #1 0x0805b27b in wns::ServerPort::pending (this=0xb6014d38) at > > serverport.cpp:85 > > #2 0x00d2f241 in ost::SocketService::run (this=0x9fb1c78) at > > socketport.cpp:748 > > #3 0x002c713d in ccxx_exec_handler (th=0x9fb1c78) at thread.cpp:1097 > > #4 0x00a813cc in start_thread () from /lib/tls/libpthread.so.0 > > #5 0x009d9c3e in clone () from /lib/tls/libc.so.6 > > ------------------------------------------------------------------------ > > > > I also made a disassembly: > > > > ------------------------------------------------------------------------ > > (gdb) disass > > Dump of assembler code for function SSL_read: > > 0x00c9b75b <SSL_read+0>: push %ebp > > 0x00c9b75c <SSL_read+1>: mov %esp,%ebp > > 0x00c9b75e <SSL_read+3>: push %ebx > > 0x00c9b75f <SSL_read+4>: call 0xc867ce <SSLv2_method+258> > > 0x00c9b764 <SSL_read+9>: add $0x130f4,%ebx > > 0x00c9b76a <SSL_read+15>: sub $0x14,%esp > > 0x00c9b76d <SSL_read+18>: mov 0x8(%ebp),%ecx > > 0x00c9b770 <SSL_read+21>: mov 0x20(%ecx),%eax > > 0x00c9b773 <SSL_read+24>: test %eax,%eax > > 0x00c9b775 <SSL_read+26>: je 0xc9b7a9 <SSL_read+78> > > 0x00c9b777 <SSL_read+28>: testb $0x2,0x30(%ecx) > > 0x00c9b77b <SSL_read+32>: je 0xc9b78c <SSL_read+49> > > 0x00c9b77d <SSL_read+34>: movl $0x1,0x18(%ecx) > > 0x00c9b784 <SSL_read+41>: xor %eax,%eax > > 0x00c9b786 <SSL_read+43>: add $0x14,%esp > > 0x00c9b789 <SSL_read+46>: pop %ebx > > 0x00c9b78a <SSL_read+47>: pop %ebp > > 0x00c9b78b <SSL_read+48>: ret > > 0x00c9b78c <SSL_read+49>: mov 0x10(%ebp),%edx > > 0x00c9b78f <SSL_read+52>: mov 0x8(%ecx),%eax > > 0x00c9b792 <SSL_read+55>: mov %edx,0x8(%esp) > > 0x00c9b796 <SSL_read+59>: mov 0xc(%ebp),%edx > > 0x00c9b799 <SSL_read+62>: mov %ecx,(%esp) > > 0x00c9b79c <SSL_read+65>: mov %edx,0x4(%esp) > > 0x00c9b7a0 <SSL_read+69>: call *0x18(%eax) > > 0x00c9b7a3 <SSL_read+72>: add $0x14,%esp > > 0x00c9b7a6 <SSL_read+75>: pop %ebx > > 0x00c9b7a7 <SSL_read+76>: pop %ebp > > 0x00c9b7a8 <SSL_read+77>: ret > > 0x00c9b7a9 <SSL_read+78>: lea 0xffffad32(%ebx),%eax > > 0x00c9b7af <SSL_read+84>: movl $0x345,0x10(%esp) > > 0x00c9b7b7 <SSL_read+92>: movl $0x114,0x8(%esp) > > 0x00c9b7bf <SSL_read+100>: mov %eax,0xc(%esp) > > 0x00c9b7c3 <SSL_read+104>: movl $0xdf,0x4(%esp) > > 0x00c9b7cb <SSL_read+112>: movl $0x14,(%esp) > > 0x00c9b7d2 <SSL_read+119>: call 0xc85c68 > > 0x00c9b7d7 <SSL_read+124>: mov $0xffffffff,%eax > > 0x00c9b7dc <SSL_read+129>: jmp 0xc9b786 <SSL_read+43> > > End of assembler dump. > > -------------------------------------------------------------------------- > > > > The crash is always in the line 0x00c9b770 <SSL_read+21>: mov > > 0x20(%ecx),%eax > > Can anyone suggest me what to do? > > > > Thanks for your > > time! > > Regards, > > Scerbatiuc Ion > > > > ________________________________ > > Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it > > now. > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > > ________________________________ > Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it > now. ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
