Bug 82645 - SEGV in __res_nquery (/lib/libresolv.so.2)
Summary: SEGV in __res_nquery (/lib/libresolv.so.2)
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: glibc
Version: 8.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2003-01-24 13:16 UTC by Michael Marxmeier
Modified: 2016-11-24 14:49 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2003-04-10 23:09:20 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2003:089 0 high SHIPPED_LIVE : Updated glibc packages fix vulnerabilities in RPC XDR decoder 2003-04-10 04:00:00 UTC

Description Michael Marxmeier 2003-01-24 13:16:15 UTC
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):

How reproducible:

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.

Comment 1 Jakub Jelinek 2003-01-26 21:54:40 UTC
Please try rawhide glibc.

Comment 2 Jakub Jelinek 2003-04-10 23:09:20 UTC
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.


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