[4.4] Could not access to a shared directory located on a samba server. -Failed to set uid privileges to (-1,6013) now set to (0,0)

Issue

• A Windows client couldn't access to a shared directory that is located on our customer's samba server. 

• The following messages were reported to /var/log/smbd.log then.

/var/log/smbd.log
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[2011/06/01 06:28:11, 0] lib/util_sec.c:assert_uid(95)
   Failed to set uid privileges to (-1,6013) now set to (0,0)
[2011/06/01 06:28:11, 0] lib/util.c:smb_panic2(1504)
   PANIC: failed to set uid
  
[2011/06/01 06:28:11, 0] lib/util_sec.c:assert_uid(95)
   Failed to set uid privileges to (-1,6016) now set to (0,0)
[2011/06/01 06:28:11, 0] lib/util.c:smb_panic2(1504)
   PANIC: failed to set uid
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