[Samba] Winbind crashes on SOME users

Wed Nov 18 05:59:21 MST 2009

Hello all.

I'm having big troubles setting up AD integration.
I think prerequisites are OK (machine is joined and many users from both 
our domains can login).

But with some (fixed) users I get:
*** glibc detected *** winbindd: free(): invalid next size (fast): 
0x00007f24de0d2740 ***
======= Backtrace: ========= 

/lib64/libc.so.6[0x7f24da3e1ba6] 

/lib64/libc.so.6(cfree+0x6f)[0x7f24da3e666f] 

winbindd[0x7f24dc932d88] 

winbindd(talloc_free+0xe0)[0x7f24dc9376e0] 

winbindd[0x7f24dc53e7e9] 

winbindd[0x7f24dc53f5f3] 

winbindd(main+0xea8)[0x7f24dc5408ee] 

/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f24da38f91d] 

winbindd[0x7f24dc53dda9] 

======= Memory map: ======== 

7f24cc000000-7f24cc021000 rw-p 00000000 00:00 0 

7f24cc021000-7f24d0000000 ---p 00000000 00:00 0 

7f24d1fd2000-7f24d1fe8000 r-xp 00000000 08:06 721 
  /lib64/libgcc_s-4.4.1.so.1
7f24d1fe8000-7f24d21e7000 ---p 00016000 08:06 721 
  /lib64/libgcc_s-4.4.1.so.1
7f24d21e7000-7f24d21e8000 rw-p 00015000 08:06 721 
  /lib64/libgcc_s-4.4.1.so.1
7f24d21e8000-7f24d21e9000 r-xp 00000000 08:06 634 
  /usr/lib64/gconv/ISO8859-1.so
7f24d21e9000-7f24d23e9000 ---p 00001000 08:06 634 
  /usr/lib64/gconv/ISO8859-1.so
7f24d23e9000-7f24d23ea000 r--p 00001000 08:06 634 
  /usr/lib64/gconv/ISO8859-1.so
7f24d23ea000-7f24d23eb000 rw-p 00002000 08:06 634 
  /usr/lib64/gconv/ISO8859-1.so
7f24d23eb000-7f24d23f0000 r-xp 00000000 08:06 165 
  /lib64/libnss_dns-2.10.1.so
7f24d23f0000-7f24d25ef000 ---p 00005000 08:06 165 
  /lib64/libnss_dns-2.10.1.so
7f24d25ef000-7f24d25f0000 r--p 00004000 08:06 165 
  /lib64/libnss_dns-2.10.1.so
7f24d25f0000-7f24d25f1000 rw-p 00005000 08:06 165 
  /lib64/libnss_dns-2.10.1.so
7f24d25f1000-7f24d25fb000 r-xp 00000000 08:06 171 
  /lib64/libnss_nis-2.10.1.so
7f24d25fb000-7f24d27fa000 ---p 0000a000 08:06 171 
  /lib64/libnss_nis-2.10.1.so
7f24d27fa000-7f24d27fb000 r--p 00009000 08:06 171 
  /lib64/libnss_nis-2.10.1.so
7f24d27fb000-7f24d27fc000 rw-p 0000a000 08:06 171 
  /lib64/libnss_nis-2.10.1.so
7f24d27fc000-7f24d2807000 r-xp 00000000 08:06 167 
  /lib64/libnss_files-2.10.1.so
7f24d2807000-7f24d2a06000 ---p 0000b000 08:06 167 
  /lib64/libnss_files-2.10.1.so
7f24d2a06000-7f24d2a07000 r--p 0000a000 08:06 167 
  /lib64/libnss_files-2.10.1.so
7f24d2a07000-7f24d2a08000 rw-p 0000b000 08:06 167 
  /lib64/libnss_files-2.10.1.so
7f24d2a22000-7f24d9320000 rw-s 00000000 08:06 118030 
  /var/cache/samba/winbindd_cache.tdb
7f24d9320000-7f24d9322000 r-xp 00000000 08:06 581 
  /usr/lib64/gconv/IBM850.so
7f24d9322000-7f24d9521000 ---p 00002000 08:06 581 
  /usr/lib64/gconv/IBM850.so
7f24d9521000-7f24d9522000 r--p 00001000 08:06 581 
  /usr/lib64/gconv/IBM850.so
7f24d9522000-7f24d9523000 rw-p 00002000 08:06 581 
  /usr/lib64/gconv/IBM850.so
7f24d9523000-7f24d9525000 r-xp 00000000 08:06 685 
  /usr/lib64/gconv/UTF-16.so
7f24d9525000-7f24d9724000 ---p 00002000 08:06 685 
  /usr/lib64/gconv/UTF-16.so
7f24d9724000-7f24d9725000 r--p 00001000 08:06 685 
  /usr/lib64/gconv/UTF-16.so
7f24d9725000-7f24d9726000 rw-p 00002000 08:06 685 
  /usr/lib64/gconv/UTF-16.so
7f24d9726000-7f24d98b5000 r-xp 00000000 08:06 32832 
  /usr/lib64/libcrypto.so.0.9.8
7f24d98b5000-7f24d9ab5000 ---p 0018f000 08:06 32832 
  /usr/lib64/libcrypto.so.0.9.8
7f24d9ab5000-7f24d9adc000 rw-p 0018f000 08:06 32832 
  /usr/lib64/libcrypto.so.0.9.8
7f24d9adc000-7f24d9adf000 rw-p 00000000 00:00 0 

7f24d9adf000-7f24d9b2c000 r-xp 00000000 08:06 32836 
  /usr/lib64/libssl.so.0.9.8
7f24d9b2c000-7f24d9d2b000 ---p 0004d000 08:06 32836 
  /usr/lib64/libssl.so.0.9.8
7f24d9d2b000-7f24d9d32000 rw-p 0004c000 08:06 32836 
  /usr/lib64/libssl.so.0.9.8
7f24d9d32000-7f24d9d4d000 r-xp 00000000 08:06 34562 
  /usr/lib64/libsasl2.so.2.0.23
7f24d9d4d000-7f24d9f4c000 ---p 0001b000 08:06 34562 
  /usr/lib64/libsasl2.so.2.0.23
7f24d9f4c000-7f24d9f4d000 r--p 0001a000 08:06 34562 
  /usr/lib64/libsasl2.so.2.0.23
7f24d9f4d000-7f24d9f4e000 rw-p 0001b000 08:06 34562 
  /usr/lib64/libsasl2.so.2.0.23
7f24d9f4e000-7f24d9f64000 r-xp 00000000 08:06 175 
  /lib64/libpthread-2.10.1.so
7f24d9f64000-7f24da163000 ---p 00016000 08:06 175 
  /lib64/libpthread-2.10.1.so
7f24da163000-7f24da164000 r--p 00015000 08:06 175 
  /lib64/libpthread-2.10.1.so
7f24da164000-7f24da165000 rw-p 00016000 08:06 175 
  /lib64/libpthread-2.10.1.so
7f24da165000-7f24da169000 rw-p 00000000 00:00 0 

7f24da169000-7f24da170000 r-xp 00000000 08:06 33117 
  /usr/lib64/libkrb5support.so.0.1
7f24da170000-7f24da370000 ---p 00007000 08:06 33117 
  /usr/lib64/libkrb5support.so.0.1
7f24da370000-7f24da371000 rw-p 00007000 08:06 33117 
  /usr/lib64/libkrb5support.so.0.1
7f24da371000-7f24da4c5000 r-xp 00000000 08:06 151 
  /lib64/libc-2.10.1.so
7f24da4c5000-7f24da6c5000 ---p 00154000 08:06 151 
  /lib64/libc-2.10.1.so
7f24da6c5000-7f24da6c9000 r--p 00154000 08:06 151 
  /lib64/libc-2.10.1.so
7f24da6c9000-7f24da6ca000 rw-p 00158000 08:06 151 
  /lib64/libc-2.10.1.so
7f24da6ca000-7f24da6cf000 rw-p 00000000 00:00 0 

7f24da6cf000-7f24da6e4000 r-xp 00000000 08:06 3142 
  /lib64/libz.so.1.2.3
7f24da6e4000-7f24da8e3000 ---p 00015000 08:06 3142 
  /lib64/libz.so.1.2.3
7f24da8e3000-7f24da8e4000 rw-p 00014000 08:06 3142 
  /lib64/libz.so.1.2.3
7f24da8e4000-7f24da8f5000 r-xp 00000000 08:06 42424 
  /usr/lib64/libwbclient.so.0
7f24da8f5000-7f24daaf5000 ---p 00011000 08:06 42424 
  /usr/lib64/libwbclient.so.0
7f24daaf5000-7f24daaf6000 r--p 00011000 08:06 42424 
  /usr/lib64/libwbclient.so.0
7f24daaf6000-7f24daaf7000 rw-p 00012000 08:06 42424 
  /usr/lib64/libwbclient.so.0
7f24daaf7000-7f24daaf8000 rw-p 00000000 00:00 0 

7f24daaf8000-7f24dab06000 r-xp 00000000 08:06 34618 
  /usr/lib64/liblber-2.4.so.2.5.2
7f24dab06000-7f24dad06000 ---p 0000e000 08:06 34618 
  /usr/lib64/liblber-2.4.so.2.5.2
7f24dad06000-7f24dad07000 r--p 0000e000 08:06 34618 
  /usr/lib64/liblber-2.4.so.2.5.2
7f24dad07000-7f24dad08000 rw-p 0000f000 08:06 34618 
  /usr/lib64/liblber-2.4.so.2.5.2
7f24dad08000-7f24dad4e000 r-xp 00000000 08:06 34620 
  /usr/lib64/libldap-2.4.so.2.5.2
7f24dad4e000-7f24daf4e000 ---p 00046000 08:06 34620 
  /usr/lib64/libldap-2.4.so.2.5.2
7f24daf4e000-7f24daf4f000 r--p 00046000 08:06 34620 
  /usr/lib64/libldap-2.4.so.2.5.2
7f24daf4f000-7f24daf51000 rw-p 00047000 08:06 34620 
  /usr/lib64/libldap-2.4.so.2.5.2
7f24daf51000-7f24daf54000 r-xp 00000000 08:06 4953 
  /lib64/libcom_err.so.2.1
7f24daf54000-7f24db153000 ---p 00003000 08:06 4953 
  /lib64/libcom_err.so.2.1
7f24db153000-7f24db154000 r--p 00002000 08:06 4953 
  /lib64/libcom_err.so.2.1
7f24db154000-7f24db155000 rw-p 00003000 08:06 4953 
  /lib64/libcom_err.so.2.1
7f24db155000-7f24db17b000 r-xp 00000000 08:06 33105 
  /usr/lib64/libk5crypto.so.3.1
7f24db17b000-7f24db37a000 ---p 00026000 08:06 33105 
  /usr/lib64/libk5crypto.so.3.1
7f24db37a000-7f24db37c000 rw-p 00025000 08:06 33105 
  /usr/lib64/libk5crypto.so.3.1
7f24db37c000-7f24db41a000 r-xp 00000000 08:06 33115 
  /usr/lib64/libkrb5.so.3.3
7f24db41a000-7f24db619000 ---p 0009e000 08:06 33115 
  /usr/lib64/libkrb5.so.3.3
7f24db619000-7f24db61d000 rw-p 0009d000 08:06 33115 
  /usr/lib64/libkrb5.so.3.3
7f24db61d000-7f24db64a000 r-xp 00000000 08:06 33101 
  /usr/lib64/libgssapi_krb5.so.2.2
7f24db64a000-7f24db849000 ---p 0002d000 08:06 33101 
  /usr/lib64/libgssapi_krb5.so.2.2
7f24db849000-7f24db84b000 rw-p 0002c000 08:06 33101 
  /usr/lib64/libgssapi_krb5.so.2.2
7f24db84b000-7f24db855000 r-xp 00000000 08:06 3102 
  /usr/lib64/libpopt.so.0.0.0
7f24db855000-7f24dba54000 ---p 0000a000 08:06 3102 
  /usr/lib64/libpopt.so.0.0.0
7f24dba54000-7f24dba55000 r--p 00009000 08:06 3102 
  /usr/lib64/libpopt.so.0.0.0
7f24dba55000-7f24dba56000 rw-p 0000a000 08:06 3102 
  /usr/lib64/libpopt.so.0.0.0
7f24dba56000-7f24dba58000 r-xp 00000000 08:06 157 
  /lib64/libdl-2.10.1.so
7f24dba58000-7f24dbc58000 ---p 00002000 08:06 157 
  /lib64/libdl-2.10.1.so
7f24dbc58000-7f24dbc59000 r--p 00002000 08:06 157 
  /lib64/libdl-2.10.1.so
7f24dbc59000-7f24dbc5a000 rw-p 00003000 08:06 157 
  /lib64/libdl-2.10.1.so
7f24dbc5a000-7f24dbc6f000 r-xp 00000000 08:06 161 
  /lib64/libnsl-2.10.1.so
7f24dbc6f000-7f24dbe6e000 ---p 00015000 08:06 161 
  /lib64/libnsl-2.10.1.so
7f24dbe6e000-7f24dbe6f000 r--p 00014000 08:06 161 
  /lib64/libnsl-2.10.1.so
7f24dbe6f000-7f24dbe70000 rw-p 00015000 08:06 161 
  /lib64/libnsl-2.10.1.so
7f24dbe70000-7f24dbe72000 rw-p 00000000 00:00 0 

7f24dbe72000-7f24dbe85000 r-xp 00000000 08:06 177 
  /lib64/libresolv-2.10.1.so
7f24dbe85000-7f24dc085000 ---p 00013000 08:06 177 
  /lib64/libresolv-2.10.1.so
7f24dc085000-7f24dc086000 r--p 00013000 08:06 177 
  /lib64/libresolv-2.10.1.so
7f24dc086000-7f24dc087000 rw-p 00014000 08:06 177 
  /lib64/libresolv-2.10.1.so
7f24dc087000-7f24dc089000 rw-p 00000000 00:00 0
7f24dc089000-7f24dc08d000 r-xp 00000000 08:06 3062 
  /lib64/libcap.so.2.16
7f24dc08d000-7f24dc28c000 ---p 00004000 08:06 3062 
  /lib64/libcap.so.2.16
7f24dc28c000-7f24dc28d000 r--p 00003000 08:06 3062 
  /lib64/libcap.so.2.16
7f24dc28d000-7f24dc28e000 rw-p 00004000 08:06 3062 
  /lib64/libcap.so.2.16
7f24dc28e000-7f24dc2aa000 r-xp 00000000 08:06 144 
  /lib64/ld-2.10.1.so
7f24dc2bc000-7f24dc2da000 rw-s 00000000 08:06 118035 
  /var/cache/samba/netsamlogon_cache.tdb
7f24dc2da000-7f24dc2f5000 rw-s 00000000 08:06 118033 
  /var/cache/samba/connections.tdb
7f24dc2f5000-7f24dc305000 rw-s 00000000 08:06 77425 
  /var/cache/samba/gencache.tdb
7f24dc305000-7f24dc310000 rw-s 00000000 08:06 77423 
  /etc/samba/secrets.tdb
7f24dc310000-7f24dc34f000 r--p 00000000 08:06 39982 
  /etc/locale/UTF-8/LC_CTYPE
7f24dc34f000-7f24dc350000 r--p 00000000 08:06 72979 
  /etc/locale/it_IT.UTF-8/LC_NUMERIC
7f24dc350000-7f24dc351000 r--p 00000000 08:06 72980 
  /etc/locale/it_IT.UTF-8/LC_TIME
7f24dc351000-7f24dc435000 r--p 00000000 08:06 39678 
  /etc/locale/UTF-8/LC_COLLATE
7f24dc435000-7f24dc436000 r--p 00000000 08:06 72972 
  /etc/locale/it_IT.UTF-8/LC_MONETARY
7f24dc436000-7f24dc437000 r--p 00000000 08:06 72982 
  /etc/locale/it_IT.UTF-8/LC_MESSAGES/SYS_LC_MESSAGES
7f24dc437000-7f24dc438000 r--p 00000000 08:06 72973 
  /etc/locale/it_IT.UTF-8/LC_PAPER
7f24dc438000-7f24dc439000 r--p 00000000 08:06 72976 
  /etc/locale/it_IT.UTF-8/LC_NAME
7f24dc439000-7f24dc43a000 r--p 00000000 08:06 72970 
  /etc/locale/it_IT.UTF-8/LC_ADDRESS
7f24dc43a000-7f24dc43b000 r--p 00000000 08:06 72977 
  /etc/locale/it_IT.UTF-8/LC_TELEPHONE
7f24dc43b000-7f24dc43c000 r--p 00000000 08:06 72975 
  /etc/locale/it_IT.UTF-8/LC_MEASUREMENT
7f24dc43c000-7f24dc443000 r--s 00000000 08:06 11205 
  /usr/lib64/gconv/gconv-modules.cache
7f24dc443000-7f24dc444000 r--p 00000000 08:06 72971 
  /etc/locale/it_IT.UTF-8/LC_IDENTIFICATION
7f24dc444000-7f24dc464000 r--s 00000000 08:06 11113 
  /usr/lib64/samba/lowcase.dat
7f24dc464000-7f24dc484000 r--s 00000000 08:06 83801 
  /usr/lib64/samba/upcase.dat
7f24dc484000-7f24dc48d000 rw-p 00000000 00:00 0
7f24dc48d000-7f24dc496000 r--p 00000000 08:06 11314 
  /usr/share/locale/it/LC_MESSAGES/libc.mo
7f24dc496000-7f24dc497000 rw-s 00000000 08:06 118000 
  /var/cache/samba/messages.tdb
7f24dc497000-7f24dc4a7000 r--s 00000000 08:06 83813 
  /usr/lib64/samba/valid.dat
7f24dc4a7000-7f24dc4a9000 rw-p 00000000 00:00 0
7f24dc4a9000-7f24dc4aa000 r--p 0001b000 08:06 144 
  /lib64/ld-2.10.1.so
7f24dc4aa000-7f24dc4ab000 rw-p 0001c000 08:06 144 
  /lib64/ld-2.10.1.so
7f24dc4ab000-7f24dca92000 r-xp 00000000 08:06 11162 
  /usr/sbin/winbindd
7f24dcc92000-7f24dcca3000 r--p 005e7000 08:06 11162 
  /usr/sbin/winbindd
7f24dcca3000-7f24dccad000 rw-p 005f8000 08:06 11162 
  /usr/sbin/winbindd
7f24dccad000-7f24dccae000 rw-p 00000000 00:00 0
7f24de095000-7f24de237000 rw-p 00000000 00:00 0 
  [heap]
7fffe086d000-7fffe0882000 rw-p 00000000 00:00 0 
  [stack]
7fffe09ff000-7fffe0a00000 r-xp 00000000 00:00 0 
  [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 
  [vsyscall]

Even stranger: if they login with domain\user.name all is OK.

It does the same on Samba 3.3.8, 3.3.9 and 3.4.2 (first two from 
Mandriva 2009.1, the last from Mandriva 2010.0).

winbind crashes just before (or during) password check - even if the 
password is wrong, the crash happens.

Is there something I might have overlooked?

Thanks.

-- 
Diego Zuccato
Servizi Informatici
Dip. di Astronomia - Università di Bologna
Via Ranzani, 1 - 40126 Bologna - Italy
tel.: +39 051 20 95786
mail: diego.zuccato at unibo.it