Panic in smbd (4.1.4)

[Matthieu Patou]

On 02/02/2014 03:08 PM, Peter Schaefer wrote:
> Hi!
>
> I'm running "smbd version 4.1.4-SerNet-Debian-7.wheezy" and it crashed 
> (see below).
>
> Is this a known issue? It happend during executing a Setup.exe which 
> did (i think) copy a folder with many small files from server to a 
> Win7x64 client. Let me know if you want the core file (17 MiB) or if i 
> could help in another way. Samba runs as an AD DC here.
>
> [2014/02/02 18:02:52.427729,  0] 
> ../source3/smbd/open.c:1582(defer_open_done)
>   PANIC: assert failed at ../source3/smbd/open.c(1582): ret
> [2014/02/02 18:02:52.427887,  0] ../source3/lib/util.c:785(smb_panic_s3)
>   PANIC (pid 21448): assert failed: ret
> [2014/02/02 18:02:52.450505,  0] 
> ../source3/lib/util.c:896(log_stack_trace)
>   BACKTRACE: 23 stack frames:
>    #0 
> /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(log_stack_trace+0x1a) 
> [0x7ffeb78f02b9]
>    #1 
> /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(smb_panic_s3+0x55) 
> [0x7ffeb78f03b7]
>    #2 
> /usr/lib/x86_64-linux-gnu/samba/libsamba-util.so.0(smb_panic+0x2d) 
> [0x7ffeb9230edb]
>    #3 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so(+0xfc9e7) 
> [0x7ffeb8e129e7]
>    #4 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(_tevent_req_notify_callback+0x2a) 
> [0x7ffeb8b0dd1e]
>    #5 /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(+0x4d30) 
> [0x7ffeb8b0dd30]
>    #6 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(_tevent_req_done+0x11) 
> [0x7ffeb8b0de23]
>    #7 /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(+0x3a4c8) 
> [0x7ffeb79034c8]
>    #8 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(_tevent_req_notify_callback+0x2a) 
> [0x7ffeb8b0dd1e]
>    #9 /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(+0x4d30) 
> [0x7ffeb8b0dd30]
>    #10 /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(+0x4da9) 
> [0x7ffeb8b0dda9]
>    #11 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(tevent_common_loop_immediate+0x128) 
> [0x7ffeb8b0d6c5]
>    #12 
> /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(run_events_poll+0x44) 
> [0x7ffeb790d905]
>    #13 /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(+0x44c5a) 
> [0x7ffeb790dc5a]
>    #14 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(_tevent_loop_once+0x92) 
> [0x7ffeb8b0ce61]
>    #15 
> /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so(smbd_process+0xedd) 
> [0x7ffeb8e3520f]
>    #16 /usr/sbin/smbd(+0x8fa1) [0x7ffeb9891fa1]
>    #17 
> /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(run_events_poll+0x2eb) 
> [0x7ffeb790dbac]
>    #18 /usr/lib/x86_64-linux-gnu/samba/libsmbconf.so.0(+0x44d21) 
> [0x7ffeb790dd21]
>    #19 
> /usr/lib/x86_64-linux-gnu/samba/libtevent.so.0(_tevent_loop_once+0x92) 
> [0x7ffeb8b0ce61]
>    #20 /usr/sbin/smbd(main+0x181c) [0x7ffeb9893d89]
>    #21 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) 
> [0x7ffeb6384ead]
>    #22 /usr/sbin/smbd(+0x5fb9) [0x7ffeb988efb9]
> [2014/02/02 18:02:52.452108,  0] ../source3/lib/dumpcore.c:317(dump_core)
>   dumping core in /var/log/samba/cores/smbd
>
> Regards,
>  Peter
If you still have the core file run the following command:

gdb <path_to_smbd> <path_to_core_file>

Once in gdb type, bt full and paste the output on this thread.



-- 
Matthieu Patou
Samba Team
http://samba.org