Segfault in Samba after usermap changes
 

I recently upgraded a Samba file/print server from 3.0.22 to 3.0.23c. The system is Debian Sarge with the latest debs from samba.org. The security setting is ADS. It turned out to be more involved than simply running apt-get upgrade, but I got it working. I then changed the username mapping file from root = DOMAIN\Administrator to root = @"DOMAIN\Domain Admins". After this, there is no network connectivity to the shares, but a lot of segfault messages are generated. Do the messages below mean anything to anyone? Thanks in advance.

[Segfault]
Using host libthread_db library "/lib/tls/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread 1078566496 (LWP 3108)]
0x402427be in waitpid () from /lib/tls/libc.so.6
#0 0x402427be in waitpid () from /lib/tls/libc.so.6
#1 0x401ea699 in strtold_l () from /lib/tls/libc.so.6
#2 0x0822d127 in smb_panic (why=0x833107d "internal error") at lib/util.c:1601
#3 0x0821adec in fault_report (sig=6) at lib/fault.c:47
#4 <signal handler called>
#5 0x401dd947 in raise () from /lib/tls/libc.so.6
#6 0x401df0c9 in abort () from /lib/tls/libc.so.6
#7 0x0823285b in talloc_chunk_from_ptr (ptr=0xbfffc900) at lib/talloc.c:119
#8 0x082330ed in _talloc_realloc (context=0x842bfe8, ptr=0xbfffc900, size=136, name=0x830c1ae "DOM_SID") at lib/talloc.c:617
#9 0x082276f0 in add_sid_to_array (mem_ctx=0x842bfe8, sid=0xbfffc8b0, sids=0xbfffc89c, num=0xbfffc8a4) at lib/util_sid.c:587
#10 0x0826c9f1 in create_token_from_username (mem_ctx=0x842bfe8, username=0xbfffe8e0 "DELSOLW2K\\Dale", is_guest=0, uid=0xbfffc9ec, gid=0xbfffc9f0, found_username=0xbfffc9f4, token=0xbfffc9f8)
at auth/auth_util.c:1230
#11 0x0826cf25 in user_in_group_sid (username=0xbfffe8e0 "DELSOLW2K\\Dale", group_sid=0xbfffca30) at auth/auth_util.c:1271
#12 0x0826d123 in user_in_group (username=0xbfffe8e0 "DELSOLW2K\\Dale", groupname=0x83834a1 "DELSOLW2K\\Domain Admins") at auth/auth_util.c:1308
#13 0x0809841c in user_in_list (user=0xbfffe8e0 "DELSOLW2K\\Dale", list=0x83ef350) at smbd/password.c:520
#14 0x08094002 in map_username (user=0xbfffe8e0 "DELSOLW2K\\Dale")
at smbd/map_username.c:162
#15 0x080bece7 in reply_spnego_kerberos (conn=0x0, inbuf=0x407ab008 "", outbuf=0x407cc008 "", length=1458, bufsize=131072, secblob=0xbfffeb60)
at smbd/sesssetup.c:292
#16 0x080bfc05 in reply_spnego_negotiate (conn=0x0, inbuf=0x407ab008 "", outbuf=0x407cc008 "", vuid=100, length=1458, bufsize=131072, blob1=
{data = 0x8425030 "`\202\005&\006\006+\006\001\005\005\002 \202\005\0320\202\005\026 $0\"\006\t*\206H\202÷\022\001\002\002\006\t*\206H\206÷\022\001\002\002\006\n+\006\001\004\001\2027\0 02\002\n¢\202\004ì\004\202\004è`\202\004ä\006\t*\206H\206÷\022\001\002\002\001", length = 1322, free = 0x822a7b0 <free_data_blob>}, auth_ntlmssp_state=0x83cdcc0) at smbd/sesssetup.c:558
#17 0x080c0334 in reply_sesssetup_and_X_spnego (conn=0x0, inbuf=0x407ab008 "", outbuf=0x407cc008 "", length=1458, bufsize=131072) at smbd/sesssetup.c:721
#18 0x080c1647 in reply_sesssetup_and_X (conn=0x0, inbuf=0x407ab008 "", outbuf=0x407cc008 "", length=1458, bufsize=131072) at smbd/sesssetup.c:863
#19 0x080e9c5f in switch_message (type=115, inbuf=0x407ab008 "", outbuf=0x407cc008 "", size=1458, bufsize=131072) at smbd/process.c:991
#20 0x080e9e84 in construct_reply (inbuf=0x407ab008 "", outbuf=0x407cc008 "", size=1458, bufsize=131072) at smbd/process.c:1018
#21 0x080ea0a2 in process_smb (inbuf=0x407ab008 "", outbuf=0x407cc008 "")
at smbd/process.c:1117
#22 0x080eaf85 in smbd_process () at smbd/process.c:1665
#23 0x082c273e in main (argc=2, argv=0xbffffda4) at smbd/server.c:1024