Samba4 - random crash

[Taylor, Jonn]

On 01/31/2011 01:46 AM, Matthieu Patou wrote:
> On 31/01/2011 04:27, Taylor, Jonn wrote:
>> About once a week samba4 alpha 14 is randomly crashing.
>>
>> CentOS 5.5 x86_64
>> Samba4 alpha14 tar ball
>>
>> [Sat Jan 29 22:00:02 2011 CST, 0
>> ../librpc/rpc/dcerpc_smb.c:311:smb_write_callback()]
>> dcerpc_smb: write callback error
>> [Sat Jan 29 22:00:02 2011 CST, 0
>> ../../lib/util/debug.c:185:talloc_log_fn()]
>> talloc: double free error - first free may be at
>> ../librpc/rpc/dcerpc_smb.c:390
>> [Sat Jan 29 22:00:02 2011 CST, 0
>> ../../lib/util/debug.c:185:talloc_log_fn()]
>> Bad talloc magic value - double free
>> [Sat Jan 29 22:00:02 2011 CST, 0 ../../lib/util/fault.c:143:smb_panic()]
>> PANIC: Bad talloc magic value - double free
>> [Sat Jan 29 22:00:02 2011 CST, 0
>> ../../lib/util/fault.c:62:call_backtrace()]
>> BACKTRACE: 20 stack frames:
>>   #0 /usr/local/samba/lib/libsamba-util.so.0(call_backtrace+0x1c)
>> [0x2ac0181a1f4c]
>>   #1 /usr/local/samba/lib/libsamba-util.so.0(smb_panic+0x1f1)
>> [0x2ac0181a21eb]
>>   #2 /usr/local/samba/lib/samba/libtalloc-samba4.so.2 [0x2ac0189f8c5a]
>>   #3 /usr/local/samba/lib/samba/libtalloc-samba4.so.2 [0x2ac0189f8cd9]
>>   #4 /usr/local/samba/lib/samba/libtalloc-samba4.so.2 [0x2ac0189f8def]
>>   #5
>> /usr/local/samba/lib/samba/libtalloc-samba4.so.2(talloc_get_name+0x15)
>> [0x2ac0189fa3c0]
>>   #6
>> /usr/local/samba/lib/samba/libtalloc-samba4.so.2(talloc_check_name+0x33)
>> [0x2ac0189fa450]
>>   #7 /usr/local/samba/lib/libdcerpc.so.0 [0x2ac0194e5bc6]
>>   #8 /usr/local/samba/lib/libdcerpc.so.0 [0x2ac01952add3]
>>   #9 /usr/local/samba/lib/samba/libauthkrb5-samba4.so(packet_recv+0x8f7)
>> [0x2ac01afbd840]
>>   #10 /usr/local/samba/lib/libdcerpc.so.0 [0x2ac019529b0f]
>>   #11 /usr/local/samba/lib/samba/libtevent-samba4.so.0 [0x2ac0187f1faa]
>>   #12 /usr/local/samba/lib/samba/libtevent-samba4.so.0 [0x2ac0187f2688]
>>   #13
>> /usr/local/samba/lib/samba/libtevent-samba4.so.0(_tevent_loop_once+0xdf)
>> [0x2ac0187ee5bb]
>>   #14
>> /usr/local/samba/lib/samba/libtevent-samba4.so.0(tevent_common_loop_wait+0x1f)
>>
>> [0x2ac0187ee7e0]
>>   #15
>> /usr/local/samba/lib/samba/libtevent-samba4.so.0(_tevent_loop_wait+0x25)
>> [0x2ac0187ee89c]
>>   #16 /usr/local/samba/sbin/samba [0x40a4bb]
>>   #17 /usr/local/samba/sbin/samba [0x40a509]
>>   #18 /lib64/libc.so.6(__libc_start_main+0xf4) [0x35c761d994]
>>   #19 /usr/local/samba/sbin/samba [0x404429]
> Can you put your server under network trace so that we can understand
> which kind of request generate this pb ?
>
> Matthieu.
>
>
>
Yes, What kind of trace to you need?

Jonn