Samba4 seg fault

[Matthias Dieter Wallnöfer]

Andrew,

do you think that this problem might be related to the async callbacks 
as stated in the following two bug reports?

https://bugzilla.samba.org/show_bug.cgi?id=7526
https://bugzilla.samba.org/show_bug.cgi?id=7859

Cheers,
Matthias

Taylor, Jonn wrote:
> I have been also seeing errors like this in the logs also.
>
> [2011/03/08 22:05:17,  0]
> ../source4/lib/ldb-samba/ldb_wrap.c:68(ldb_wrap_debug)
>    ldb: A transaction is still active in ldb context [0x9d34cb0] on
> /usr/local/samba/private/sam.ldb
>
>
> On 03/08/2011 10:07 PM, Taylor, Jonn wrote:
>    
>> Samba4 is still intermittently crashing. This seems to be happening when
>> loading and unloading user profiles.
>>
>> Jonn
>>
>> [2011/03/08 22:01:01,  0]
>> ../source4/lib/cmdline/popt_common.c:58(popt_s4_talloc_log_fn)
>>    talloc: access after free error - first free may be at
>> ../lib/tevent/tevent_req.c:178
>> [2011/03/08 22:01:01,  0]
>> ../source4/lib/cmdline/popt_common.c:58(popt_s4_talloc_log_fn)
>>    Bad talloc magic value - access after free
>> [2011/03/08 22:01:01,  0] ../lib/util/fault.c:143(smb_panic)
>>    PANIC: Bad talloc magic value - access after free
>> [2011/03/08 22:01:01,  0] ../lib/util/fault.c:62(call_backtrace)
>>    BACKTRACE: 24 stack frames:
>>     #0 /usr/local/samba/lib/libsamba-util.so.0(call_backtrace+0x1c)
>> [0x2b8df49e1300]
>>     #1 /usr/local/samba/lib/libsamba-util.so.0(smb_panic+0x24d)
>> [0x2b8df49e161b]
>>     #2 /usr/local/samba/lib/samba/libtalloc.so.2 [0x2b8df500edba]
>>     #3 /usr/local/samba/lib/samba/libtalloc.so.2 [0x2b8df500ee39]
>>     #4 /usr/local/samba/lib/samba/libtalloc.so.2 [0x2b8df500ef4f]
>>     #5 /usr/local/samba/lib/samba/libtalloc.so.2(talloc_get_name+0x15)
>> [0x2b8df501055f]
>>     #6
>> /usr/local/samba/lib/samba/libtalloc.so.2(_talloc_get_type_abort+0x49)
>> [0x2b8df50106fe]
>>     #7 /usr/local/samba/lib/libdcerpc.so.0 [0x2b8df5cf55a5]
>>     #8 /usr/local/samba/lib/libdcerpc.so.0 [0x2b8df5cf6eb5]
>>     #9 /usr/local/samba/lib/libdcerpc.so.0 [0x2b8df5cf7282]
>>     #10
>> /usr/local/samba/lib/samba/libtevent.so.0(tevent_common_loop_timer_delay+0x20b)
>> [0x2b8df4e089d9]
>>     #11 /usr/local/samba/lib/samba/libtevent.so.0 [0x2b8df4e07815]
>>     #12 /usr/local/samba/lib/samba/libtevent.so.0 [0x2b8df4e0807e]
>>     #13 /usr/local/samba/lib/samba/libtevent.so.0(_tevent_loop_once+0xdf)
>> [0x2b8df4e037e0]
>>     #14
>> /usr/local/samba/lib/samba/libtevent.so.0(tevent_common_loop_wait+0x1f)
>> [0x2b8df4e03a05]
>>     #15 /usr/local/samba/lib/samba/libtevent.so.0(_tevent_loop_wait+0x25)
>> [0x2b8df4e03ac1]
>>     #16 /usr/local/samba/modules/process_model/standard.so [0x2b8dfc131475]
>>     #17
>> /usr/local/samba/lib/samba/libservice.so(task_server_startup+0x8a)
>> [0x2b8df43b1290]
>>     #18 /usr/local/samba/lib/samba/libservice.so [0x2b8df43afb7b]
>>     #19
>> /usr/local/samba/lib/samba/libservice.so(server_service_startup+0x11a)
>> [0x2b8df43afcb8]
>>     #20 /usr/local/samba/sbin/samba [0x40a7a9]
>>     #21 /usr/local/samba/sbin/samba [0x40a880]
>>     #22 /lib64/libc.so.6(__libc_start_main+0xf4) [0x35c761d994]
>>     #23 /usr/local/samba/sbin/samba [0x404509]
>>
>> Samba4 version
>>
>> [2011/03/08 22:05:18,  0] ../source4/smbd/server.c:368(binary_smbd_main)
>>    samba version 4.0.0alpha15-GIT-6013d75 started.
>>    Copyright Andrew Tridgell and the Samba Team 1992-2011
>> [2011/03/08 22:05:19,  0] ../source4/smbd/server.c:470(binary_smbd_main)
>>    samba: using 'standard' process model
>>
>>      
>