Re: Segmentation fault in context_type_get()

[Gaurav Kumar <gk@xxxxxxxxxxxxxxxxxxx>]

Nevermind, I think it is Ubuntu issue. Code works just fine on Fedora & Redhat. I think selinux support in Ubuntu is limited and the library could be buggy- I'll file a bug at launchpad.

Cheers,

Gaurav

On Sun, Sep 2, 2012 at 4:42 AM, Gaurav Kumar <gk@xxxxxxxxxxxxxxxxxxx> wrote:

Hi, 

When I try to compile this program http://pastebin.com/VY958hLD (refer http://www.internet-goods.com/?p=42 for original code)  I get segmentation fault. Seems to be an issue with context_type_get

root@devUbuntu:/home/user1/dev# gdb ./a.out

GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04

Copyright (C) 2012 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.  Type "show copying"

and "show warranty" for details.

This GDB was configured as "x86_64-linux-gnu".

For bug reporting instructions, please see:

<http://bugs.launchpad.net/gdb-linaro/>...

Reading symbols from /home/user1 /dev/a.out...done.

(gdb) run

Starting program: /home/user1 /dev/a.out

Checking if selinux is enabled…

this program is not running on a SELinux kernel

getting this program’s current context…

this program's security_context_t is: = unconfined

Calling context_type_get

Program received signal SIGSEGV, Segmentation fault.

0x00007ffff7bc5a20 in context_type_get () from /lib/x86_64-linux-gnu/libselinux.so.1

(gdb)

I am compiling code as "gcc tmp.c -lselinux -ggdb" on Ubuntu 12.04.

Is this an issue with selinux on Ubuntu? If not, can you please provide an example of how to call context_type_get()

Thanks,

Gaurav