Red Hat Bugzilla – Bug 82645
SEGV in __res_nquery (/lib/libresolv.so.2)
Last modified: 2016-11-24 09:49:26 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3b) Gecko/20030119 Description of problem: With RH 8.0 our application gets a SEGV during reverse DNS lookup. Program received signal SIGSEGV, Segmentation fault. 0x40556c34 in __res_nquery () from /lib/libresolv.so.2 Application stack dump: #0 0x40556c34 in __res_nquery () from /lib/libresolv.so.2 #1 0x4001d235 in _nss_dns_gethostbyaddr_r () from /lib/libnss_dns.so.2 #2 0x420ed6d9 in gethostbyaddr_r@@GLIBC_2.1.2 () from /lib/i686/libc.so.6 #3 0x420ed4c5 in gethostbyaddr () from /lib/i686/libc.so.6 #4 0x0804c8dd in tcp_decode_addr_in (p_addr_in=0x80f5bb4, p_addr=0x19, p_port=0xd, p_name=0x80f5be8) at eloq/src/B0632/eloq/util/tcputil.c:811 #5 0x0804c948 in tcp_peer_addr (sockfd=8, peer_addr=0x80f5bec, peer_port=0x80f5bf2, peer_name=0x80f5be8) at /eloq/src/B0632/eloq/util/tcputil.c:839 #6 0x0804f2b2 in accept_server_connection () at /eloq/src/B0632/eqdb/teqdb6/event.c:184 #7 0x0804f818 in check_tcpip_request () at /eloq/src/B0632/eqdb/teqdb6/event.c:596 Might be related to bug #77467 Version-Release number of selected component (if applicable): glibc-2.2.93-5 How reproducible: Always Steps to Reproduce: Any remote reverse dns lookup crashes the server process. Additional info: This might be related to limited stack space (threads) but extending the stack to 64k did not make a difference.
Please try rawhide glibc.
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2003-089.html