Res_query Seg Faulting for a FQDN

Alok Raj alok.raj at
Wed Jun 26 13:04:03 UTC 2013

Hi Guys,

I have one query, while querying DNS for SOA record for FQDN it is segment-faulting in centos-6.3, any clue?
Pasting below the trace:

[Thread debugging using libthread_db enabled]
[New Thread 0xb7fe3b70 (LWP 7093)]
[New Thread 0xb75e2b70 (LWP 7094)]
[New Thread 0xb6be1b70 (LWP 7095)]
[New Thread 0xb61e0b70 (LWP 7096)]
[New Thread 0xb57dfb70 (LWP 7097)]

Program received signal SIGSEGV, Segmentation fault.
0x006ac2b4 in __libc_res_nsend () from /lib/
Missing separate debuginfos, use: debuginfo-install xxx-enterprise-7.5.0-1567.i386
(gdb) bt

(gdb) bt
#0  0x006ac2b4 in __libc_res_nsend () from /lib/
#1  0x006a84d0 in __libc_res_nquery () from /lib/
#2  0x006a8ba4 in __res_nquery () from /lib/
#3  0x006a7c8a in res_query () from /lib/
#4  0x00132883 in DNSGetNameServers (pszDomain=0x804fde8 "", ppszZone=0xbffff584, ppNSInfoList=0xbffff588, pdwNumServers=0xbffff58c)


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