Bug 114932

Summary:	yast2-nis: invalid free() ? (unable to configure nis slave server using yast)
Product:	[openSUSE] SUSE LINUX 10.0	Reporter:	Martin Mrazik <mmrazik>
Component:	YaST2	Assignee:	Jiří Suchomel <jsuchome>
Status:	RESOLVED FIXED	QA Contact:	Klaus Kämpf <kkaempf>
Severity:	Normal
Priority:	P5 - None	CC:	kukuk
Version:	Beta 4
Target Milestone:	---
Hardware:	Other
OS:	All
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	97395
Attachments:	y2logs backtrace (gdb --args /usr/lib/yp/ypxfr -f -h moody.suse.cz -d suse.cz shadow.byname) strace

Description Martin Mrazik 2005-09-02 10:44:52 UTC

I have this setup:

two hosts - both running sl10 beta4 (moody.suse.cz & dhcp44). On moody I
configured master nis server with active slave (added dhdp44.suse.cz to the list
of slave servers).

On dhcp44 I'm trying to configure nis slave server using yast. The configuration
ends with this error: "Hostname of this host (dhcp44.suse.cz) is not listed in
the master's list".

Finally this appears on my commandline:

dhcp44:~ # yast2&
[1] 19070
dhcp44:~ # Command: /sbin/yast2 nis_server &
Command: /sbin/yast2 nis_server &
*** glibc detected *** free(): invalid pointer: 0xbfd077dc ***

Comment 1 Martin Mrazik 2005-09-02 10:45:47 UTC

Created attachment 48579 [details]
y2logs

Comment 2 Jiří Suchomel 2005-09-02 13:16:24 UTC

I'm not sure about that 'free' warning - it is not an issue of yast2-nis-server,
might be related to yast2-core package (thought I doubt).

However, the problem with unconfigured server should be easy to fix; Andreas,
could I submit it into RC1?

Comment 3 Jiří Suchomel 2005-09-02 13:28:46 UTC

Ah, that glibc message comes from the call
/usr/lib/yp/ypxfr -f -h moody.suse.cz suse.cz shadow.byname

-> Thorsten, could you look at it?

And I have one more question for you (just reassuring): 
"/usr/lib/yp/makedbm -u /var/yp/suse.cz/ypservers" used to produce the output
int the form "key value" (with space), but now it looks like uses \t instead of
space. Could I rely on this fact?

Comment 4 Thorsten Kukuk 2005-09-02 13:32:57 UTC

(In reply to comment #3)
> Ah, that glibc message comes from the call
> /usr/lib/yp/ypxfr -f -h moody.suse.cz suse.cz shadow.byname

Backtrace? I cannot reproduce that with our servers here and I never
heard about such problems.

> -> Thorsten, could you look at it?
> 
> And I have one more question for you (just reassuring): 
> "/usr/lib/yp/makedbm -u /var/yp/suse.cz/ypservers" used to produce the output
> int the form "key value" (with space), but now it looks like uses \t instead of
> space. Could I rely on this fact?

In the past it used sometimes wrongly " " (space). You should except both, space
and/or tab. It depends on the implementation and the kind of map.

Comment 5 Thorsten Kukuk 2005-09-02 13:34:42 UTC

Between, using "/usr/lib/yp/ypxfr -f -h moody.suse.cz suse.cz shadow.byname"
gives an usage error and with -s:
kukuk@firun:~> /usr/lib/yp/ypxfr -f -h moody.suse.cz -s suse.cz shadow.byname
ypxfr: Can't find server for map

Comment 6 Jiří Suchomel 2005-09-02 13:41:57 UTC

Sorry, the missing parameter was -d (try it from dhcp44.suse.cz):
/usr/lib/yp/ypxfr -f -h moody.suse.cz -d suse.cz shadow.byname

Comment 7 Jiří Suchomel 2005-09-02 14:08:41 UTC

Created attachment 48603 [details]
backtrace (gdb --args /usr/lib/yp/ypxfr -f -h moody.suse.cz -d suse.cz shadow.byname)

Comment 8 Jiří Suchomel 2005-09-02 14:09:27 UTC

Created attachment 48604 [details]
strace

Comment 9 Thorsten Kukuk 2005-09-02 14:23:42 UTC

Grmpfh, I thought I fixed that long time ago. fixed package submitted.

Comment 10 Jiří Suchomel 2005-09-02 14:45:27 UTC

yast2-nis-server package also adapted for current makedbm output and submitted.