[Samba] segfault Re: Errors, errors, errors in log

Mon Apr 29 03:09:16 MDT 2013

Jeremy,

This backtrace looks like it might be something to do with your recent
struct DIR work.  The revision 5727bfa is from master after the work you
did for Ceph in the VFS.

On Mon, 2013-04-29 at 10:54 +0400, Александр Свиридов wrote:
> Andrew, please help me with this problem. I searched the solution in
> internet but couldn't find it. Here is log of certain user.

Александр Свиридов,

This is the first time we have seen this particular crash.  Essentially
all such INTERNAL ERROR messages are bugs in Samba that we fix as soon
as we can.  If you can give more details of your specific OS and
configuration, Jeremy will be able to help you. 

> [2013/04/29 09:40:49.557876,  0] ../lib/util/fault.c:72(fault_report)
>   ===============================================================
> [2013/04/29 09:40:49.558716,  0] ../lib/util/fault.c:73(fault_report)
>   INTERNAL ERROR: Signal 11 in pid 7068 (4.1.0pre1-GIT-5727bfa)
>   Please read the Trouble-Shooting section of the Samba HOWTO
> [2013/04/29 09:40:49.558886,  0] ../lib/util/fault.c:75(fault_report)
>   ===============================================================
> [2013/04/29 09:40:49.559004,
> 0] ../source3/lib/util.c:810(smb_panic_s3)
>   PANIC (pid 7068): internal error
> [2013/04/29 09:40:49.560313,
> 0] ../source3/lib/util.c:921(log_stack_trace)
>   BACKTRACE: 47 stack frames:
>    #0 /usr/local/samba/lib/libsmbconf.so.0(log_stack_trace+0x1f)
> [0x7ffd5d8f6baf]
>    #1 /usr/local/samba/lib/libsmbconf.so.0(smb_panic_s3+0x6d)
> [0x7ffd5d8f6a1e]
>    #2 /usr/local/samba/lib/libsamba-util.so.0(smb_panic+0x28)
> [0x7ffd5f763a65]
>    #3 /usr/local/samba/lib/libsamba-util.so.0(+0x1c767)
> [0x7ffd5f763767]
>    #4 /usr/local/samba/lib/libsamba-util.so.0(+0x1c77c)
> [0x7ffd5f76377c]
>    #5 /lib64/libpthread.so.0() [0x345820f500]
>    #6 /usr/local/samba/lib/private/libsmbd_base.so(TellDir+0xc)
> [0x7ffd5ee60f32]
>    #7 /usr/local/samba/lib/private/libsmbd_base.so(dptr_TellDir+0x1c)
> [0x7ffd5ee5eb16]
> 
> #8 /usr/local/samba/lib/private/libsmbd_base.so(smbd_dirptr_get_entry
> +0xc7) [0x7ffd5ee5f663]
> 
> #9 /usr/local/samba/lib/private/libsmbd_base.so(smbd_dirptr_lanman2_entry+0x1b4) [0x7ffd5eeadb47]
>    #10 /usr/local/samba/lib/private/libsmbd_base.so(+0x193f20)
> [0x7ffd5ef32f20]
> 
> #11 /usr/local/samba/lib/private/libsmbd_base.so(smbd_smb2_request_process_find+0x654) [0x7ffd5ef321a4]
> 
> #12 /usr/local/samba/lib/private/libsmbd_base.so(smbd_smb2_request_dispatch+0x108f) [0x7ffd5ef19804]
>    #13 /usr/local/samba/lib/private/libsmbd_base.so(+0x17d944)
> [0x7ffd5ef1c944]
> 
> #14 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) [0x7ffd5e98b9d7]
>    #15 /usr/local/samba/lib/private/libtevent.so.0(+0x5a09)
> [0x7ffd5e98ba09]
>    #16 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done
> +0x25) [0x7ffd5e98ba30]
>    #17 /usr/local/samba/lib/private/libsmbd_base.so(+0x17d370)
> [0x7ffd5ef1c370]
> 
> #18 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) [0x7ffd5e98b9d7]
>    #19 /usr/local/samba/lib/private/libtevent.so.0(+0x5a09)
> [0x7ffd5e98ba09]
>    #20 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done
> +0x25) [0x7ffd5e98ba30]
>    #21 /usr/local/samba/lib/private/libsamba-sockets.so(+0xc5b8)
> [0x7ffd5d6c35b8]
> 
> #22 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) [0x7ffd5e98b9d7]
>    #23 /usr/local/samba/lib/private/libtevent.so.0(+0x5a09)
> [0x7ffd5e98ba09]
>    #24 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done
> +0x25) [0x7ffd5e98ba30]
>    #25 /usr/local/samba/lib/private/libsamba-sockets.so(+0xc086)
> [0x7ffd5d6c3086]
>    #26 /usr/local/samba/lib/private/libsamba-sockets.so(+0xc2b8)
> [0x7ffd5d6c32b8]
> 
> #27 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) [0x7ffd5e98b9d7]
>    #28 /usr/local/samba/lib/private/libtevent.so.0(+0x5a09)
> [0x7ffd5e98ba09]
>    #29 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_done
> +0x25) [0x7ffd5e98ba30]
>    #30 /usr/local/samba/lib/private/libsamba-sockets.so(+0xb5a1)
> [0x7ffd5d6c25a1]
> 
> #31 /usr/local/samba/lib/private/libtevent.so.0(_tevent_req_notify_callback+0x6a) [0x7ffd5e98b9d7]
>    #32 /usr/local/samba/lib/private/libtevent.so.0(+0x5a09)
> [0x7ffd5e98ba09]
>    #33 /usr/local/samba/lib/private/libtevent.so.0(+0x5b27)
> [0x7ffd5e98bb27]
> 
> #34 /usr/local/samba/lib/private/libtevent.so.0(tevent_common_loop_immediate+0x1f9) [0x7ffd5e98aef4]
>    #35 /usr/local/samba/lib/libsmbconf.so.0(run_events_poll+0x57)
> [0x7ffd5d9131ef]
>    #36 /usr/local/samba/lib/libsmbconf.so.0(+0x4289c) [0x7ffd5d91389c]
>    #37 /usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_once
> +0xfc) [0x7ffd5e989fb9]
>    #38 /usr/local/samba/lib/private/libsmbd_base.so(smbd_process
> +0x1321) [0x7ffd5eefda9c]
>    #39 /usr/local/samba/sbin/smbd() [0x4098ba]
>    #40 /usr/local/samba/lib/libsmbconf.so.0(run_events_poll+0x544)
> [0x7ffd5d9136dc]
>    #41 /usr/local/samba/lib/libsmbconf.so.0(+0x429b2) [0x7ffd5d9139b2]
>    #42 /usr/local/samba/lib/private/libtevent.so.0(_tevent_loop_once
> +0xfc) [0x7ffd5e989fb9]
>    #43 /usr/local/samba/sbin/smbd() [0x40a539]
>    #44 /usr/local/samba/sbin/smbd(main+0x1587) [0x40bc11]
>    #45 /lib64/libc.so.6(__libc_start_main+0xfd) [0x3457a1ecdd]
>    #46 /usr/local/samba/sbin/smbd() [0x4055b9]
> [2013/04/29 09:40:49.562765,
> 0] ../source3/lib/util.c:822(smb_panic_s3)
>   smb_panic(): calling panic action [/var/log/samba/panic 7068]
> sh: /var/log/samba/panic: Permission denied
> [2013/04/29 09:40:49.572649,
> 0] ../source3/lib/util.c:830(smb_panic_s3)
>   smb_panic(): action returned status 126
> [2013/04/29 09:40:49.572871,
> 0] ../source3/lib/dumpcore.c:317(dump_core)
>   dumping core in /usr/local/samba/var/cores/smbd

-- 
Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org