[Samba] Samba 4.1.11 smbd crashes regularly

[Christian]

Hi,

I'm using a fresh install of samba 4.1.11 compiled from source on a 
fully patched Ubuntu 12.04 Server.

Most Clients are Windows 7 and some are Windows XP.

My logs get flooded (happend over 100 times in the last 12 hours) with 
internal errors and smbd dumps core.

Has anyone else such a problem or knows how to fix it?



  2014/08/12 07:27:50.280149,  0] ../lib/util/fault.c:73(fault_report)
   INTERNAL ERROR: Signal 11 in pid 9964 (4.1.11)
   Please read the Trouble-Shooting section of the Samba HOWTO
[2014/08/12 07:27:50.280171,  0] ../lib/util/fault.c:75(fault_report)
   ===============================================================
[2014/08/12 07:27:50.280187,  0] ../source3/lib/util.c:785(smb_panic_s3)
   PANIC (pid 9964): internal error
[2014/08/12 07:27:50.280745,  0] 
../source3/lib/util.c:896(log_stack_trace)
   BACKTRACE: 28 stack frames:
    #0 /usr/local/samba4/lib/libsmbconf.so.0(log_stack_trace+0x1f) 
[0x7f265f92daab]
    #1 /usr/local/samba4/lib/libsmbconf.so.0(smb_panic_s3+0x6e) 
[0x7f265f92d8f9]
    #2 /usr/local/samba4/lib/libsamba-util.so.0(smb_panic+0x28) 
[0x7f26615a6fc8]
    #3 /usr/local/samba4/lib/libsamba-util.so.0(+0x1ccab) 
[0x7f26615a6cab]
    #4 /usr/local/samba4/lib/libsamba-util.so.0(+0x1ccc0) 
[0x7f26615a6cc0]
    #5 /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0) [0x7f26617d7cb0]
    #6 /usr/local/samba4/lib/private/libsmbd_base.so(+0x1a249d) 
[0x7f266119849d]
    #7 /usr/local/samba4/lib/private/libsmbd_base.so(+0x1a291f) 
[0x7f266119891f]
    #8 /usr/local/samba4/lib/private/libsmbd_base.so(name_to_8_3+0x97) 
[0x7f2661197133]
    #9 /usr/local/samba4/lib/private/libsmbd_base.so(+0x102c0f) 
[0x7f26610f8c0f]
    #10 
/usr/local/samba4/lib/private/libsmbd_base.so(smbd_dirptr_lanman2_entry+0x26e) 
[0x7f26610f95e4]
    #11 /usr/local/samba4/lib/private/libsmbd_base.so(+0x18af0c) 
[0x7f2661180f0c]
    #12 
/usr/local/samba4/lib/private/libsmbd_base.so(smbd_smb2_request_process_find+0x661) 
[0x7f266118010d]
    #13 
/usr/local/samba4/lib/private/libsmbd_base.so(smbd_smb2_request_dispatch+0x10cb) 
[0x7f2661167056]
    #14 /usr/local/samba4/lib/private/libsmbd_base.so(+0x174997) 
[0x7f266116a997]
    #15 /usr/local/samba4/lib/private/libsmbd_base.so(+0x174aa6) 
[0x7f266116aaa6]
    #16 /usr/local/samba4/lib/libsmbconf.so.0(run_events_poll+0x542) 
[0x7f265f94a717]
    #17 /usr/local/samba4/lib/libsmbconf.so.0(+0x3f9e4) [0x7f265f94a9e4]
    #18 
/usr/local/samba4/lib/private/libtevent.so.0(_tevent_loop_once+0xf8) 
[0x7f2660de8f5f]
    #19 
/usr/local/samba4/lib/private/libsmbd_base.so(smbd_process+0x1335) 
[0x7f266114a1bd]
    #20 /usr/local/samba4/sbin/smbd(+0x9acd) [0x7f2661c13acd]
    #21 /usr/local/samba4/lib/libsmbconf.so.0(run_events_poll+0x542) 
[0x7f265f94a717]
    #22 /usr/local/samba4/lib/libsmbconf.so.0(+0x3f9e4) [0x7f265f94a9e4]
    #23 
/usr/local/samba4/lib/private/libtevent.so.0(_tevent_loop_once+0xf8) 
[0x7f2660de8f5f]
    #24 /usr/local/samba4/sbin/smbd(+0xa714) [0x7f2661c14714]
    #25 /usr/local/samba4/sbin/smbd(main+0x14a1) [0x7f2661c15d07]
    #26 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) 
[0x7f265e19e78d]
    #27 /usr/local/samba4/sbin/smbd(+0x5879) [0x7f2661c0f879]
[2014/08/12 07:27:50.280966,  0] 
../source3/lib/dumpcore.c:317(dump_core)
   dumping core in /usr/local/samba4/var/cores/smbd
[2014/08/12 07:28:09.428104,  1] 
../source3/smbd/server.c:409(cleanup_timeout_fn)
   Cleaning up brl and lock database after unclean shutdown

My smb.conf looks like this:

[global]
         workgroup = AD
         realm = AD.TESTDOMAIN.DE
         netbios name = SVR9
         netbios aliases = svr27, svrb, svra, fileserver, fs1
         server string = svr9-testdomain
         server role = active directory domain controller
         server services = -dns, +s3fs, +rpc, +nbt, +wrepl, +ldap, 
+cldap, +kdc, +drepl, +winbind, +ntp_signd, +kcc, +dnsupdate
         idmap_ldb:use rfc2307 = yes
         acl:search = no
         lanman auth = Yes
         log level = 1
         syslog = 0
         max log size = 50000
         time server = Yes
         unix extensions = No
         mangling method = hash
         os level = 65
         preferred master = Yes
         wide links = Yes
         socket options = TCP_NODELAY
         bind interfaces only = yes
         interfaces = lo eth0
         kernel change notify = no

[netlogon]
         path = 
/usr/local/samba4/var/locks/sysvol/ad.testdomain.de/scripts
         read only = No

[sysvol]
         path = /usr/local/samba4/var/locks/sysvol
         read only = No

[homes]
         comment = %us privates Netzwerklaufwerk
         path = /home/%S/LAN
         valid users = %S
         read only = No
         browseable = No

[public]
         path = /svr/public
         read only = No
         guest ok = Yes
[temp]
         path = /svr/temp
         read only = No
         create mask = 0777
         directory mask = 0777
[admin]
         path = /svr/admin
         valid users = +ad.testdomain.de\admin
         read only = No
         browseable = No


Cheers

Christian