Description of problem: The number of successfully added users depends on the length of the user name. If user names look this way "usNNNN", useradd can successfully add more than 1200 users. If user names look this was "userNNNN", useradd can successfully add less than 1000 users. Maybe there is a problem in /etc/group parsing, because the name of each added user must be appended to the student group record. Version-Release number of selected component (if applicable): DISTRO=rawhide-20090519 kernel-2.6.29.3-140.fc11 shadow-utils-4.1.2-13.fc11 How reproducible: always (reproduced on i386 and x86_64 machines) Steps to Reproduce: # groupadd student # for I in `seq 1000 1 2000` ; do useradd -G student user$I ; if [ $? -ne 0 ] ; then echo user$I ; fi ; done useradd: unknown group student user1962 useradd: unknown group student user1963 useradd: unknown group student user1964 useradd: unknown group student user1965 useradd: unknown group student user1966 useradd: unknown group student user1967 useradd: unknown group student user1968 useradd: unknown group student user1969 useradd: unknown group student user1970 useradd: unknown group student user1971 useradd: unknown group student user1972 useradd: unknown group student user1973 useradd: unknown group student user1974 useradd: unknown group student user1975 useradd: unknown group student user1976 useradd: unknown group student user1977 useradd: unknown group student user1978 useradd: unknown group student user1979 useradd: unknown group student user1980 useradd: unknown group student user1981 useradd: unknown group student user1982 useradd: unknown group student user1983 useradd: unknown group student user1984 useradd: unknown group student user1985 useradd: unknown group student user1986 useradd: unknown group student user1987 useradd: unknown group student user1988 useradd: unknown group student user1989 useradd: unknown group student user1990 useradd: unknown group student user1991 useradd: unknown group student user1992 useradd: unknown group student user1993 useradd: unknown group student user1994 useradd: unknown group student user1995 useradd: unknown group student user1996 useradd: unknown group student user1997 useradd: unknown group student user1998 useradd: unknown group student user1999 useradd: unknown group student user2000 Actual results: some users are added, some are not Expected results: all users are added
The problem is that the buffer that stores student group structure is not big enough. Current setting xgetgrnam.c:#define MAX_LENGTH 0x8000 I have asked upstream, if it would be possible to adjust to value.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle. Changing version to '11'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
fixed in shadow-utils-4_1_4_1-1_fc12