SOLVED: The very basic thing that get's the whole thing broken seems
to be VERY BASIC understanding of C. I did cut out only the
initialization code in a separate program and it worked fine.
Somewhere in the program before the initialization of openssl I'm
having pointer problems of some sort.....
Thanks very much for the quick reply and sorry for rising any false alarms...
On Thu, Oct 10, 2013 at 8:02 PM, Jeff Trawick <traw...@gmail.com> wrote:
> On Thu, Oct 10, 2013 at 12:54 PM, Angelin Lalev <lalev.ange...@gmail.com>
> wrote:
>>
>> (gdb) r
>> Starting program: /home/ventsi/fing/fing
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x000000000086d1fc in read ()
>> (gdb) info threads
>> Id Target Id Frame
>> * 1 process 13262 "fing" 0x000000000086d1fc in read ()
>
>
> Ouch/I'll shut up now.
>
> (I think there's something very basic going wrong/getting corrupted if a
> segfault is reported in the syscall interface.)
>
>>
>> On Thu, Oct 10, 2013 at 7:19 PM, Jeff Trawick <traw...@gmail.com> wrote:
>> > On Thu, Oct 10, 2013 at 11:50 AM, Angelin Lalev
>> > <lalev.ange...@gmail.com>
>> > wrote:
>> >>
>> >> Greetings,
>> >> I could use some help.
>> >>
>> >> I'm getting segmentation fault from this code:
>> >>
>> >> /* Init the openssl library */
>> >> SSL_load_error_strings();
>> >> SSL_library_init();
>> >>
>> >> ctx=SSL_CTX_new(SSLv3_client_method());
>> >>
>> >> The backtrace looks like this:
>> >>
>> >> Program received signal SIGSEGV, Segmentation fault.
>> >> 0x000000000086d1fc in read ()
>> >> (gdb) backtrace
>> >> #0 0x000000000086d1fc in read ()
>> >
>> >
>> > Run "info threads" and see what the other threads are doing. ("thread
>> > n"
>> > followed by "backtrace") Presumably the crash is on another thread
>> > since it
>> > is "hard" to make read() crash.
>> >
>> >
>> >>
>> >> #1 0x00000000004eb3fe in RAND_poll () at rand_unix.c:347
>> >> #2 0x00000000004eabed in ssleay_rand_bytes (buf=0x88ed00 "", num=16,
>> >> pseudo=1)
>> >> at md_rand.c:394
>> >> #3 0x00000000004eb0b0 in ssleay_rand_pseudo_bytes (buf=0x88ed00 "",
>> >> num=16)
>> >> at md_rand.c:543
>> >> #4 0x000000000045d352 in RAND_pseudo_bytes (buf=0x88ed00 "", num=16)
>> >> at rand_lib.c:172
>> >> #5 0x0000000000424163 in SSL_CTX_new (meth=0x5c4200) at ssl_lib.c:1808
>> >> #6 0x0000000000402ca2 in main (argc=1, argv=0x7fffffffe718) at
>> >> fing.c:253
>> >>
>> >> My system is Ubuntu Server LTS 12.10 and it's currently installed in a
>> >> VirtualBox virtual machine.
>> >> I'm not at all proficient in C, even more in Linux development and I
>> >> cannot by myself determine what
>> >> I did to break things. Up to one moment, the program was working, at
>> >> the next recompilation/reboot it just
>> >> stopped :-) I do a binary which will be located on initramfs system,
>> >> so it is statically compiled.
>> >> OpenSSL is compiled with the following config options
>> >>
>> >> ./config -d no-dso no-shared
>> >> ______________________________________________________________________
>> >> OpenSSL Project http://www.openssl.org
>> >> User Support Mailing List openssl-users@openssl.org
>> >> Automated List Manager majord...@openssl.org
>> >
>> >
>> >
>> >
>> > --
>> > Born in Roswell... married an alien...
>> > http://emptyhammock.com/
>> ______________________________________________________________________
>> OpenSSL Project http://www.openssl.org
>> User Support Mailing List openssl-users@openssl.org
>> Automated List Manager majord...@openssl.org
>
>
>
>
> --
> Born in Roswell... married an alien...
> http://emptyhammock.com/
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