The Samba-Bugzilla – Attachment 8826 Details for
Bug 9827
smbd segfault randomly while client login.
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smbd backtrace for client pccom1
gdb.pccom1.txt (text/plain), 7.85 KB, created by
Serge Coulon
on 2013-04-29 09:24:41 UTC
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Description:
smbd backtrace for client pccom1
Filename:
MIME Type:
Creator:
Serge Coulon
Created:
2013-04-29 09:24:41 UTC
Size:
7.85 KB
patch
obsolete
>root@bambi:/var/log/samba/cores/smbd# gdb /usr/sbin/smbd core >GNU gdb (GDB) 7.4.1-debian >Copyright (C) 2012 Free Software Foundation, Inc. >License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> >This is free software: you are free to change and redistribute it. >There is NO WARRANTY, to the extent permitted by law. Type "show copying" >and "show warranty" for details. >This GDB was configured as "x86_64-linux-gnu". >For bug reporting instructions, please see: ><http://www.gnu.org/software/gdb/bugs/>... >Reading symbols from /usr/sbin/smbd...Reading symbols from /usr/lib/debug/.build-id/63/36e23b105436ebf2dd3b9d8f65f8d96f3ba6be.debug...done. >done. >[New LWP 23923] > >warning: Can't read pathname for load map: Erreur d'entrée/sortie. >[Thread debugging using libthread_db enabled] >Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". >Core was generated by `/usr/sbin/smbd -D'. >Program terminated with signal 6, Aborted. >#0 0x00007f0ee1c4a475 in raise () from /lib/x86_64-linux-gnu/libc.so.6 >(gdb) bt >#0 0x00007f0ee1c4a475 in raise () from /lib/x86_64-linux-gnu/libc.so.6 >#1 0x00007f0ee1c4d6f0 in abort () from /lib/x86_64-linux-gnu/libc.so.6 >#2 0x00007f0ee52aebbb in dump_core () at lib/fault.c:391 >#3 0x00007f0ee52bd34e in smb_panic (why=why@entry=0x7f0ee569589e "internal error") at lib/util.c:1133 >#4 0x00007f0ee52ae4e4 in fault_report (sig=<optimized out>) at lib/fault.c:53 >#5 sig_fault (sig=<optimized out>) at lib/fault.c:76 >#6 <signal handler called> >#7 tcopy_passwd (mem_ctx=mem_ctx@entry=0x7f0ee682bbe0, from=0x4850) at ../lib/util/util_pw.c:82 >#8 0x00007f0ee525ada6 in pdb_copy_sam_account (dst=dst@entry=0x7f0ee682bbe0, src=0x7f0ee6849210) at passdb/passdb.c:2114 >#9 0x00007f0ee525df85 in pdb_getsampwsid (sam_acct=sam_acct@entry=0x7f0ee682bbe0, sid=sid@entry=0x7fff680116a0) > at passdb/pdb_interface.c:414 >#10 0x00007f0ee5195441 in _samr_OpenUser (p=p@entry=0x7f0ee683c4c0, r=r@entry=0x7f0ee682a5e0) at rpc_server/samr/srv_samr_nt.c:2204 >#11 0x00007f0ee51a5625 in api_samr_OpenUser (p=0x7f0ee683c4c0) at librpc/gen_ndr/srv_samr.c:2745 >#12 0x00007f0ee51b5f76 in rpcint_dispatch (out_data=0x7f0ee682c430, in_data=0x7f0ee682c420, opnum=<optimized out>, > mem_ctx=0x7f0ee682c420, p=0x7f0ee683c4c0) at rpc_server/rpc_ncacn_np.c:210 >#13 rpcint_bh_raw_call_send (mem_ctx=<optimized out>, ev=0x7f0ee6821a90, h=<optimized out>, object=<optimized out>, > opnum=<optimized out>, in_flags=<optimized out>, in_data=0x7f0ee682b6e0 "", in_length=28) at rpc_server/rpc_ncacn_np.c:308 >#14 0x00007f0ee532f4ee in dcerpc_binding_handle_raw_call_send (mem_ctx=<optimized out>, ev=ev@entry=0x7f0ee6821a90, > h=h@entry=0x7f0ee683c380, object=object@entry=0x0, opnum=opnum@entry=34, in_flags=1048576, in_data=0x7f0ee682b6e0 "", in_length=28) > at ../librpc/rpc/binding_handle.c:133 >#15 0x00007f0ee532fcd8 in dcerpc_binding_handle_call_send (mem_ctx=mem_ctx@entry=0x7f0ee6824630, ev=ev@entry=0x7f0ee6821a90, > h=h@entry=0x7f0ee683c380, object=0x0, table=table@entry=0x7f0ee5a14320, opnum=opnum@entry=34, r_mem=r_mem@entry=0x7f0ee683b9e0, > r_ptr=0x7fff680118f0) at ../librpc/rpc/binding_handle.c:414 >#16 0x00007f0ee532fe07 in dcerpc_binding_handle_call (h=h@entry=0x7f0ee683c380, object=object@entry=0x0, table=0x7f0ee5a14320, > opnum=opnum@entry=34, r_mem=r_mem@entry=0x7f0ee683b9e0, r_ptr=r_ptr@entry=0x7fff680118f0) at ../librpc/rpc/binding_handle.c:534 >#17 0x00007f0ee522907d in dcerpc_samr_OpenUser_r (h=h@entry=0x7f0ee683c380, mem_ctx=mem_ctx@entry=0x7f0ee683b9e0, > r=r@entry=0x7fff680118f0) at librpc/gen_ndr/ndr_samr_c.c:7529 >#18 0x00007f0ee52292ad in dcerpc_samr_OpenUser (h=h@entry=0x7f0ee683c380, mem_ctx=mem_ctx@entry=0x7f0ee683b9e0, > _domain_handle=_domain_handle@entry=0x7fff680119b0, _access_mask=_access_mask@entry=33554432, _rid=_rid@entry=1011, > _user_handle=_user_handle@entry=0x7fff68011aa0, result=result@entry=0x7fff68011940) at librpc/gen_ndr/ndr_samr_c.c:7664 >#19 0x00007f0ee514833b in samr_find_machine_account (mem_ctx=mem_ctx@entry=0x7f0ee683b9e0, b=0x7f0ee683c380, > account_name=account_name@entry=0x7f0ee683b550 "PCCOM1$", domain_sid_p=domain_sid_p@entry=0x7fff68011a78, > user_rid_p=user_rid_p@entry=0x7fff68011a6c, user_handle=user_handle@entry=0x7fff68011aa0, access_mask=33554432) > at rpc_server/netlogon/srv_netlog_nt.c:600 >#20 0x00007f0ee5149332 in get_md4pw (msg_ctx=0x7f0ee67edca0, sid=0x7fff68011ac0, sec_chan_type=SEC_CHAN_WKSTA, > mach_acct=0x7f0ee683b550 "PCCOM1$", md4pw=0x7fff68011a90) at rpc_server/netlogon/srv_netlog_nt.c:699 >#21 _netr_ServerAuthenticate3 (p=p@entry=0x7f0ee682e7b0, r=r@entry=0x7f0ee683b150) at rpc_server/netlogon/srv_netlog_nt.c:947 >#22 0x00007f0ee514e826 in api_netr_ServerAuthenticate3 (p=0x7f0ee682e7b0) at librpc/gen_ndr/srv_netlogon.c:2168 >#23 0x00007f0ee51b1e55 in api_rpcTNP (p=p@entry=0x7f0ee682e7b0, api_rpc_cmds=<optimized out>, n_cmds=<optimized out>, > pkt=<error reading variable: Unhandled dwarf expression opcode 0xfa>, > pkt=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at rpc_server/srv_pipe.c:1647 >#24 0x00007f0ee51b35bb in api_pipe_request (pkt=0x7f0ee682cbe0, p=0x7f0ee682e7b0) at rpc_server/srv_pipe.c:1580 >#25 process_request_pdu (pkt=0x7f0ee682cbe0, p=0x7f0ee682e7b0) at rpc_server/srv_pipe.c:1837 >#26 process_complete_pdu (p=p@entry=0x7f0ee682e7b0) at rpc_server/srv_pipe.c:1894 >#27 0x00007f0ee51b4448 in process_incoming_data (p=p@entry=0x7f0ee682e7b0, data=data@entry=0x7f0ee683abe4 "h", n=<optimized out>) > at rpc_server/srv_pipe_hnd.c:218 >#28 0x00007f0ee51b4b20 in write_to_internal_pipe (n=128, data=0x7f0ee683abe4 "h", p=0x7f0ee682e7b0) at rpc_server/srv_pipe_hnd.c:244 >#29 np_write_send (mem_ctx=mem_ctx@entry=0x7f0ee683ada0, ev=0x7f0ee67eb4f0, handle=handle@entry=0x7f0ee6826a00, > data=data@entry=0x7f0ee683abd4 "\005", len=len@entry=128) at rpc_server/srv_pipe_hnd.c:538 >#30 0x00007f0ee4fca075 in reply_pipe_write_and_X (req=0x7f0ee6831110, req@entry=0x7f0ee683acb0) at smbd/pipes.c:322 >#31 0x00007f0ee4fd38d8 in reply_write_and_X (req=req@entry=0x7f0ee683acb0) at smbd/reply.c:4531 >#32 0x00007f0ee501608c in switch_message (type=47 '/', req=req@entry=0x7f0ee683acb0, size=size@entry=196) at smbd/process.c:1574 >#33 0x00007f0ee5016492 in construct_reply (deferred_pcd=0x0, encrypted=false, seqnum=<optimized out>, unread_bytes=0, size=196, > inbuf=0x0, sconn=0x7f0ee67eb5b0) at smbd/process.c:1610 >#34 process_smb (sconn=sconn@entry=0x7f0ee67eb5b0, inbuf=<optimized out>, nread=196, unread_bytes=0, seqnum=<optimized out>, > encrypted=false, deferred_pcd=deferred_pcd@entry=0x0) at smbd/process.c:1688 >#35 0x00007f0ee50168d1 in smbd_server_connection_read_handler (conn=0x7f0ee67eb5b0, fd=10) at smbd/process.c:2317 >#36 0x00007f0ee52ccd13 in run_events_poll (num_pfds=2, pfds=0x7f0ee68257a0, pollrtn=<optimized out>, ev=0x7f0ee67eb4f0) > at lib/events.c:286 >#37 run_events_poll (ev=0x7f0ee67eb4f0, pollrtn=pollrtn@entry=1, pfds=0x7f0ee68257a0, num_pfds=2) at lib/events.c:184 >#38 0x00007f0ee501803a in smbd_server_connection_loop_once (conn=0x7f0ee67eb5b0) at smbd/process.c:1017 >#39 smbd_process (sconn=0x7f0ee67eb5b0) at smbd/process.c:3158 >#40 0x00007f0ee552b443 in smbd_accept_connection (ev=<optimized out>, fde=<optimized out>, flags=<optimized out>, > private_data=<optimized out>) at smbd/server.c:514 >#41 0x00007f0ee52ccd13 in run_events_poll (num_pfds=5, pfds=0x7f0ee6810660, pollrtn=<optimized out>, ev=0x7f0ee67eb4f0) > at lib/events.c:286 >#42 run_events_poll (ev=0x7f0ee67eb4f0, pollrtn=<optimized out>, pfds=0x7f0ee6810660, num_pfds=5) at lib/events.c:184 >#43 0x00007f0ee52cceaa in s3_event_loop_once (ev=0x7f0ee67eb4f0, location=<optimized out>) at lib/events.c:349 >#44 0x00007f0ee52cda10 in _tevent_loop_once (ev=0x7f0ee67eb4f0, location=location@entry=0x7f0ee57331e9 "smbd/server.c:847") > at ../lib/tevent/tevent.c:494 >#45 0x00007f0ee4f96850 in smbd_parent_loop (parent=<optimized out>) at smbd/server.c:847 >#46 main (argc=<optimized out>, argv=0x7f0ee67edca0) at smbd/server.c:1327 >
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