Samba4 - random crash

[Matthieu Patou]

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.



-- 
Matthieu Patou
Samba Team        http://samba.org
Private repo      http://git.samba.org/?p=mat/samba.git;a=summary