Bug 163132 - ypxfr gives "double free" and segmentation fault errors
ypxfr gives "double free" and segmentation fault errors
Status: CLOSED CURRENTRELEASE
Product: Fedora
Classification: Fedora
Component: ypserv (Show other bugs)
4
i386 Linux
medium Severity high
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Assigned To: Steve Dickson
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2005-07-13 05:57 EDT by David Jansen
Modified: 2007-11-30 17:11 EST (History)
0 users

See Also:
Fixed In Version: 2.13-7
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2005-07-21 08:49:27 EDT
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Regression: ---
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Documentation: ---
CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description David Jansen 2005-07-13 05:57:30 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050524 Fedora/1.0.4-4 Firefox/1.0.4

Description of problem:
When running ypinit, a lot of errors scroll by from ypxfr (see below), causing the transfer of the yp maps to fail. 
Also, when ypxfr is run manually, it gives in some cases a similar error, and in other cases a segmentation faiult.

I have tried this also with SELINUX disabled and with prelink disabled, to eliminate two possible causes of problems, but the effects were the same.

Our NIS server is running on a FC3 machine, and it is working fine with other FC3 NIS slaves, and also with FC4 clients.

Version-Release number of selected component (if applicable):
ypserv-2.13-6

How reproducible:
Always

Steps to Reproduce:
1. /usr/lib/yp/ypinit -s eems.strw.leidenuniv.nl
2.
3.
  

Actual Results:  errors (see below) and no NIS setup

Expected Results:  transfer of NIS maps and a working slave server

Additional info:

Transferring networks.byaddr...
*** glibc detected *** /usr/lib/yp/ypxfr: free(): invalid pointer: 0xbff85bb3 ***
======= Backtrace: =========
/lib/libc.so.6[0x585424]
/lib/libc.so.6(__libc_free+0x77)[0x58595f]
/lib/libc.so.6(xdr_string+0xc9)[0x612f30]
/lib/libnsl.so.1(xdr_ypresp_master+0x43)[0x86aa5b]
/lib/libc.so.6(xdr_free+0x1d)[0x61269d]
/usr/lib/yp/ypxfr[0x8049ccc]
/usr/lib/yp/ypxfr[0x804ac7c]
/lib/libc.so.6(__libc_start_main+0xc6)[0x536de6]
/usr/lib/yp/ypxfr[0x80494e1]
======= Memory map: ========
00111000-0011a000 r-xp 00000000 03:01 87747      /lib/libgcc_s-4.0.0-20050520.so.1
0011a000-0011b000 rwxp 00009000 03:01 87747      /lib/libgcc_s-4.0.0-20050520.so.1
001dd000-001f7000 r-xp 00000000 03:01 87764      /lib/ld-2.3.5.so
001f7000-001f8000 r-xp 00019000 03:01 87764      /lib/ld-2.3.5.so
001f8000-001f9000 rwxp 0001a000 03:01 87764      /lib/ld-2.3.5.so
0034d000-0035c000 r-xp 00000000 03:01 87811      /lib/libresolv-2.3.5.so
0035c000-0035d000 r-xp 0000e000 03:01 87811      /lib/libresolv-2.3.5.so
0035d000-0035e000 rwxp 0000f000 03:01 87811      /lib/libresolv-2.3.5.so
0035e000-00360000 rwxp 0035e000 00:00 0
00522000-00646000 r-xp 00000000 03:01 87773      /lib/libc-2.3.5.so
00646000-00648000 r-xp 00124000 03:01 87773      /lib/libc-2.3.5.so
00648000-0064a000 rwxp 00126000 03:01 87773      /lib/libc-2.3.5.so
0064a000-0064c000 rwxp 0064a000 00:00 0
0074b000-0074f000 r-xp 00000000 03:01 87796      /lib/libnss_dns-2.3.5.so
0074f000-00750000 r-xp 00003000 03:01 87796      /lib/libnss_dns-2.3.5.so
00750000-00751000 rwxp 00004000 03:01 87796      /lib/libnss_dns-2.3.5.so
00867000-00879000 r-xp 00000000 03:01 87783      /lib/libnsl-2.3.5.so
00879000-0087a000 r-xp 00011000 03:01 87783      /lib/libnsl-2.3.5.so
0087a000-0087b000 rwxp 00012000 03:01 87783      /lib/libnsl-2.3.5.so
0087b000-0087d000 rwxp 0087b000 00:00 0
008bb000-008bc000 r-xp 008bb000 00:00 0
00fb7000-00fbd000 r-xp 00000000 03:03 985332     /usr/lib/libgdbm.so.2.0.0
00fbd000-00fbe000 rwxp 00005000 03:03 985332     /usr/lib/libgdbm.so.2.0.0
08048000-0804d000 r-xp 00000000 03:03 1212999    /usr/lib/yp/ypxfr
0804d000-0804e000 rw-p 00004000 03:03 1212999    /usr/lib/yp/ypxfr
080c8000-080e9000 rw-p 080c8000 00:00 0          [heap]
b7e00000-b7e21000 rw-p b7e00000 00:00 0
b7e21000-b7f00000 ---p b7e21000 00:00 0
b7f6e000-b7f6f000 rw-p b7f6e000 00:00 0
b7f86000-b7f87000 rw-p b7f86000 00:00 0
bff71000-bff87000 rw-p bff71000 00:00 0          [stack]
/usr/lib/yp/ypinit: line 37: 19046 Aborted                 $YPBINDIR/ypxfr -f -h $MASTER -c -d $DOMAIN $map
YPINIT: WARNING: Couldn't exec /usr/lib/yp/ypxfr -f -h eems.strw.leidenuniv.nl -c -d strw.LeidenUniv.nl networks.byaddr
Comment 1 David Jansen 2005-07-21 08:49:27 EDT
today's update (ypserv-2.13-7) fixed this bug

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