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Description of problem:
Function innetgr() doesn't free memory if the specified machine is found  
in the file /etc/netgroup. Doesn't happen in case of no match. This function  
is used by rpc.mountd (nfs-utils) to check if an host is a member of a network  
group. Attached patch fixes the bug. 
 

Version-Release number of selected component (if applicable):
glibc-2.3.4-2.9

How reproducible:
Always

Steps to Reproduce:
1. Compile following sample program:     
#include <stdio.h> 
#include <stdlib.h> 
#include <sys/types.h> 
#include <unistd.h> 
#include <string.h>  
#include <netdb.h> 
 
int main(int argc, char *argv[]) { 
        char    *hname = "p1.mygroup.com"; 
        char    *cname = "@mygroup"; 
 
        while(1) { 
                if(innetgr(cname+1, hname, NULL, NULL)) { 
                        printf("Found\n"); 
                } 
                sleep(1); 
        } 
} 
2. Edit /etc/nsswitch.conf, on line networks, put: 
networks:   files 
3. Save provided attachment as /etc/netgroup   

Actual Results:  Sample program indefinitly calls innetgr() to check if host  
p1.mygroup.com is a member of network group mygroup and 
sleeps 1 second. 
 
Using top command shows that memory is consumed on every iteration. 

Expected Results:  Memory usage should not increase. 

Additional info:

Bug tested on Fedora 4 with glibc-2.3.5-10.3