smbd crashes repeatedly

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Samba 3.6.3 on arch linux x86_64 member of an NT4 domain with winbindd
Clients' shares become temporary unavailable after unsuccessful open of 
files.
Happens after server has run for some time.
I'm unsure if some configuration error could be involved (have researched 
for some hours) or it is a bug-file candidate?
Log contains this:

Feb 29 12:11:56 localhost smbd[27433]:    #0 
/usr/sbin/smbd(log_stack_trace+0x1a) [0x7fdd196ea6aa]
Feb 29 12:11:56 localhost smbd[27433]:    #1 
/usr/sbin/smbd(smb_panic+0x25) [0x7fdd196ea785]
Feb 29 12:11:56 localhost smbd[27433]:    #2 /usr/sbin/smbd(+0x405a48) 
[0x7fdd196dba48]
Feb 29 12:11:56 localhost smbd[27433]:    #3 /lib/libc.so.6(+0x349f0) 
[0x7fdd162a69f0]
Feb 29 12:11:56 localhost smbd[27433]:    #4 
/usr/sbin/smbd(copy_serverinfo+0x1a) [0x7fdd1973f34a]
Feb 29 12:11:56 localhost smbd[27433]:    #5 
/usr/sbin/smbd(make_server_info_guest+0x10) [0x7fdd1973f530]
Feb 29 12:11:56 localhost smbd[27433]:    #6 /usr/sbin/smbd(+0x468a25) 
[0x7fdd1973ea25]
Feb 29 12:11:56 localhost smbd[27433]:    #7 /usr/sbin/smbd(+0x463282) 
[0x7fdd19739282]
Feb 29 12:11:56 localhost smbd[27433]:    #8 /usr/sbin/smbd(+0x46fed9) 
[0x7fdd19745ed9]
Feb 29 12:11:56 localhost smbd[27433]:    #9 
/usr/sbin/smbd(ntlmssp_server_auth+0x2da) [0x7fdd194b2a0a]
Feb 29 12:11:56 localhost smbd[27433]:    #10 
/usr/sbin/smbd(ntlmssp_update+0x1d2) [0x7fdd194a9842]
Feb 29 12:11:56 localhost smbd[27433]:    #11 
/usr/sbin/smbd(auth_ntlmssp_update+0x16) [0x7fdd194a9d86]
Feb 29 12:11:56 localhost smbd[27433]:    #12 
/usr/sbin/smbd(reply_sesssetup_and_X+0x1ab4) [0x7fdd1940ea44]
Feb 29 12:11:56 localhost smbd[27433]:    #13 /usr/sbin/smbd(+0x171f94) 
[0x7fdd19447f94]
Feb 29 12:11:56 localhost smbd[27433]:    #14 /usr/sbin/smbd(+0x1723ab) 
[0x7fdd194483ab]
Feb 29 12:11:56 localhost smbd[27433]:    #15 /usr/sbin/smbd(+0x1727c3) 
[0x7fdd194487c3]
Feb 29 12:11:56 localhost smbd[27433]:    #16 
/usr/sbin/smbd(run_events_poll+0x34e) [0x7fdd196fa46e]
Feb 29 12:11:56 localhost smbd[27433]:    #17 
/usr/sbin/smbd(smbd_process+0x812) [0x7fdd19449f32]
Feb 29 12:11:56 localhost smbd[27433]:    #18 /usr/sbin/smbd(+0x68788f) 
[0x7fdd1995d88f]
Feb 29 12:11:56 localhost smbd[27433]:    #19 
/usr/sbin/smbd(run_events_poll+0x34e) [0x7fdd196fa46e]
Feb 29 12:11:56 localhost smbd[27433]:    #20 /usr/sbin/smbd(+0x42460a) 
[0x7fdd196fa60a]
Feb 29 12:11:56 localhost smbd[27433]:    #21 
/usr/sbin/smbd(_tevent_loop_once+0x90) [0x7fdd196fb190]
Feb 29 12:11:56 localhost smbd[27433]:    #22 /usr/sbin/smbd(main+0xed0) 
[0x7fdd193c7fe0]
Feb 29 12:11:56 localhost smbd[27433]:    #23 
/lib/libc.so.6(__libc_start_main+0xed) [0x7fdd1629338d]
Feb 29 12:11:56 localhost smbd[27433]:    #24 /usr/sbin/smbd(+0xf24c5) 
[0x7fdd193c84c5]
Feb 29 12:11:56 localhost smbd[27433]: [2012/02/29 12:11:56.746562,  0] 
lib/fault.c:372(dump_core)
Feb 29 12:11:56 localhost smbd[27433]:   dumping core in 
/var/log/samba/cores/smbd
Feb 29 12:11:56 localhost smbd[27433]:
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.832023,  0] 
lib/fault.c:47(fault_report)
Feb 29 12:11:59 localhost smbd[27435]: 
===============================================================
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.832129,  0] 
lib/fault.c:48(fault_report)
Feb 29 12:11:59 localhost smbd[27435]:   INTERNAL ERROR: Signal 11 in pid 
27435 (3.6.3)
Feb 29 12:11:59 localhost smbd[27435]:   Please read the Trouble-Shooting 
section of the Samba3-HOWTO
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.832174,  0] 
lib/fault.c:50(fault_report)
Feb 29 12:11:59 localhost smbd[27435]:
Feb 29 12:11:59 localhost smbd[27435]:   From: 
http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.832217,  0] 
lib/fault.c:51(fault_report)
Feb 29 12:11:59 localhost smbd[27435]: 
===============================================================
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.832248,  0] 
lib/util.c:1117(smb_panic)
Feb 29 12:11:59 localhost smbd[27435]:   PANIC (pid 27435): internal error
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.834508,  0] 
lib/util.c:1221(log_stack_trace)
Feb 29 12:11:59 localhost smbd[27435]:   BACKTRACE: 25 stack frames:
Feb 29 12:11:59 localhost smbd[27435]:    #0 
/usr/sbin/smbd(log_stack_trace+0x1a) [0x7fdd196ea6aa]
Feb 29 12:11:59 localhost smbd[27435]:    #1 
/usr/sbin/smbd(smb_panic+0x25) [0x7fdd196ea785]
Feb 29 12:11:59 localhost smbd[27435]:    #2 /usr/sbin/smbd(+0x405a48) 
[0x7fdd196dba48]
Feb 29 12:11:59 localhost smbd[27435]:    #3 /lib/libc.so.6(+0x349f0) 
[0x7fdd162a69f0]
Feb 29 12:11:59 localhost smbd[27435]:    #4 
/usr/sbin/smbd(copy_serverinfo+0x1a) [0x7fdd1973f34a]
Feb 29 12:11:59 localhost smbd[27435]:    #5 
/usr/sbin/smbd(make_server_info_guest+0x10) [0x7fdd1973f530]
Feb 29 12:11:59 localhost smbd[27435]:    #6 /usr/sbin/smbd(+0x468a25) 
[0x7fdd1973ea25]
Feb 29 12:11:59 localhost smbd[27435]:    #7 /usr/sbin/smbd(+0x463282) 
[0x7fdd19739282]
Feb 29 12:11:59 localhost smbd[27435]:    #8 /usr/sbin/smbd(+0x46fed9) 
[0x7fdd19745ed9]
Feb 29 12:11:59 localhost smbd[27435]:    #9 
/usr/sbin/smbd(ntlmssp_server_auth+0x2da) [0x7fdd194b2a0a]
Feb 29 12:11:59 localhost smbd[27435]:    #10 
/usr/sbin/smbd(ntlmssp_update+0x1d2) [0x7fdd194a9842]
Feb 29 12:11:59 localhost smbd[27435]:    #11 
/usr/sbin/smbd(auth_ntlmssp_update+0x16) [0x7fdd194a9d86]
Feb 29 12:11:59 localhost smbd[27435]:    #12 
/usr/sbin/smbd(reply_sesssetup_and_X+0x1ab4) [0x7fdd1940ea44]
Feb 29 12:11:59 localhost smbd[27435]:    #13 /usr/sbin/smbd(+0x171f94) 
[0x7fdd19447f94]
Feb 29 12:11:59 localhost smbd[27435]:    #14 /usr/sbin/smbd(+0x1723ab) 
[0x7fdd194483ab]
Feb 29 12:11:59 localhost smbd[27435]:    #15 /usr/sbin/smbd(+0x1727c3) 
[0x7fdd194487c3]
Feb 29 12:11:59 localhost smbd[27435]:    #16 
/usr/sbin/smbd(run_events_poll+0x34e) [0x7fdd196fa46e]
Feb 29 12:11:59 localhost smbd[27435]:    #17 
/usr/sbin/smbd(smbd_process+0x812) [0x7fdd19449f32]
Feb 29 12:11:59 localhost smbd[27435]:    #18 /usr/sbin/smbd(+0x68788f) 
[0x7fdd1995d88f]
Feb 29 12:11:59 localhost smbd[27435]:    #19 
/usr/sbin/smbd(run_events_poll+0x34e) [0x7fdd196fa46e]
Feb 29 12:11:59 localhost smbd[27435]:    #20 /usr/sbin/smbd(+0x42460a) 
[0x7fdd196fa60a]
Feb 29 12:11:59 localhost smbd[27435]:    #21 
/usr/sbin/smbd(_tevent_loop_once+0x90) [0x7fdd196fb190]
Feb 29 12:11:59 localhost smbd[27435]:    #22 /usr/sbin/smbd(main+0xed0) 
[0x7fdd193c7fe0]
Feb 29 12:11:59 localhost smbd[27435]:    #23 
/lib/libc.so.6(__libc_start_main+0xed) [0x7fdd1629338d]
Feb 29 12:11:59 localhost smbd[27435]:    #24 /usr/sbin/smbd(+0xf24c5) 
[0x7fdd193c84c5]
Feb 29 12:11:59 localhost smbd[27435]: [2012/02/29 12:11:59.834970,  0] 
lib/fault.c:372(dump_core)
Feb 29 12:11:59 localhost smbd[27435]:   dumping core in 
/var/log/samba/cores/smbd
Feb 29 12:11:59 localhost smbd[27435]:




Steen Meyer
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