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POSIGABRT in C Linux
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  1. POSIGABRT in C Linux
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    copied!<p>i received an strange SIGABRT in my C program, tha's my function where the problem appears:</p> <pre><code>int get_interface_mac_addr(Interface* iface) { char arquivo[10]; sprintf(arquivo, "/sys/class/net/%s/address", iface-&gt;interface_name); int fd; fd = open(arquivo, O_RDONLY, 0); char buf[100]; read(fd, buf, sizeof (buf)); buf[strlen(buf) - 1] = '\0'; strcpy(iface-&gt;interface_mac_addr, buf); close(fd); return GET_MAC_ADDR_SUCCESS; } </code></pre> <p>The error happends at "}", the last line of code.</p> <p>I try to debug with GDB, but I'm new at this, so I do not understand many things that GDB tells me. Below is the output from GDB:</p> <pre><code>Core was generated by `./vfirewall-monitor'. Program terminated with signal 6, Aborted. #0 0x00007f36c043b425 in __GI_raise (sig=&lt;optimized out&gt;) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt #0 0x00007f36c043b425 in __GI_raise (sig=&lt;optimized out&gt;) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #1 0x00007f36c043eb8b in __GI_abort () at abort.c:91 #2 0x00007f36c047939e in __libc_message (do_abort=2, fmt=0x7f36c058157f "*** %s ***: %s terminated\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:201 #3 0x00007f36c050ff47 in __GI___fortify_fail (msg=0x7f36c0581567 "stack smashing detected") at fortify_fail.c:32 #4 0x00007f36c050ff10 in __stack_chk_fail () at stack_chk_fail.c:29 #5 0x00000000004029be in get_interface_mac_addr (iface=0x7f36b4004560) at interfaces.c:340 #6 0x00000000004022c9 in get_interfaces_info (iface=0x7f36b4004560) at interfaces.c:87 #7 0x0000000000402d9d in get_all_system_info () at kernel.c:109 #8 0x00007f36c07cce9a in start_thread (arg=0x7f36bb729700) at pthread_create.c:308 #9 0x00007f36c04f93fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () (gdb) </code></pre> <p>Someone know whats going on in this case? I do something wrong and a can see what is?</p> <p>many thanks.</p>
 

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