Description of problem:
I am experiencing a situation where attempting to browse/connect to a 
z390 RHEL3 samba server causes the process to peg out at 100% cpu and 
begin to consume every increasing amounts of memory.  I have tested 
basically the same configuration on a x86 RHEL3 server without 
problem.  Once memory is fully consumed the vmachine hangs, which 
suggests the virtual memory killer is not working or is disabled.

Here is a snapshot from strace of the smb process:

munmap(0x100023fa000, 4096)             = 0
mremap(0x1000241c000, 718000128, 718004224, MREMAP_MAYMOVE) = 
0x1000241c000
open("/etc/passwd", O_RDONLY)           = 25
fcntl(25, F_GETFD)                      = 0
fcntl(25, F_SETFD, FD_CLOEXEC)          = 0
fstat(25, {st_mode=S_IFREG|0644, st_size=1492, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 
0x100023fa000
read(25, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 1492
read(25, "", 4096)                      = 0
close(25)                               = 0
munmap(0x100023fa000, 4096)             = 0
mremap(0x1000241c000, 718004224, 718004224, MREMAP_MAYMOVE) = 
0x1000241c000
open("/etc/passwd", O_RDONLY)           = 25
fcntl(25, F_GETFD)                      = 0
fcntl(25, F_SETFD, FD_CLOEXEC)          = 0
fstat(25, {st_mode=S_IFREG|0644, st_size=1492, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 
0x100023fa000
read(25, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 1492
read(25, "", 4096)                      = 0
close(25)           

The above repeats endlessly until all memory is consumed.

I have added the following to /etc/pam.d/system-auth:
auth        sufficient    /lib64/security/pam_winbind.so
account     required      /lib64/security/pam_winbind.so
session     required      /lib64/security/pam_mkhomedir.so 
skel=/etc/skel

I found it odd that /lib/ did not contain these libs and that I had 
to use /lib64/.

I am able to join this server to active directory and rpc without 
issue, and kinit _SEEMS_ to connect properly.

I have verified that the same /etc/samba/smb.conf and /etc/krb5.conf 
works on my x86 test server without problem but I can provide those 
if needed.  wbinfo -g and wbinfo -u reports fine, however "getent 
passwd" and "getent groups" reports the local machine accounts, then 
hangs when it gets to where it should report the active directory 
users and groups.

Version-Release number of selected component (if applicable):
samba-3.0.0-14.3E

How reproducible:
1.Configure samba as a windows 2000 active directory member server 
(with winbind and kerberos)
2.Attempt to browse or connect to a samba share
3.Check for smb processes that are consuming all cpu and growing in 
memory usage.

Steps to Reproduce:
1.Configure samba as a windows 2000 active directory member server 
(with winbind and kerberos)
2.Attempt to browse or connect to a samba share
3.Check for smb processes that are consuming all cpu and growing in 
memory usage.
  
Actual results:
Hung smb process for for each attempt at a connection.


Expected results:
Browse the server / mount the share


Additional info: