[Bug 854457] Re: Panic or segfault in Samba every 30 mins

Tue Nov 1 02:03:24 UTC 2011

i also get this alerts every 2 or 3 days even i restart winbindd every
night.

The Samba 'panic action' script, /usr/share/samba/panic-action,
was called for PID 2081 (/usr/sbin/winbindd).

This means there was a problem with the program, such as a segfault.
Below is a backtrace for this process generated with gdb, which shows
the state of the program at the time the error occurred.  The Samba log
files may contain additional information about the problem.

If the problem persists, you are encouraged to first install the
samba-dbg package, which contains the debugging symbols for the Samba
binaries.  Then submit the provided information as a bug report to
Ubuntu by visiting this link:
https://launchpad.net/ubuntu/+source/samba/+filebug

[Thread debugging using libthread_db enabled]
[New Thread 0xb73276d0 (LWP 2081)]
0xb773d410 in __kernel_vsyscall ()
#0  0xb773d410 in __kernel_vsyscall ()
#1  0xb74e6593 in waitpid () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7489643 in ?? () from /lib/tls/i686/cmov/libc.so.6
#3  0x08123408 in smb_panic (why=0x82772c0 "internal error")
    at lib/util.c:1639
#4  0x0810dc2a in sig_fault (sig=6) at lib/fault.c:47
#5  <signal handler called>
#6  0xb773d410 in __kernel_vsyscall ()
#7  0xb747c085 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb747da01 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb747510e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#10 0xb75bcc3a in ldap_parse_result () from /usr/lib/libldap_r-2.4.so.2
#11 0x0823a1ac in ads_do_paged_search_args (ads=0x83590b0, 
    bind_path=<value optimized out>, scope=0, 
    expr=0x8265a95 "(objectclass=*)", attrs=0xbfde68b0, args=0x0, 
    res=0xbfde68b8, count=0xbfde67d4, cookie=0xbfde67d8) at libads/ldap.c:700
#12 0x0823a52f in ads_do_search_all_args (ads=0x83590b0, 
    bind_path=0x8363070 "", scope=0, expr=0x8265a95 "(objectclass=*)", 
    attrs=0xbfde68b0, args=0x0, res=0xbfde68b8) at libads/ldap.c:772
#13 0x08243ac9 in ads_do_search_retry_internal (ads=0x83590b0, 
    bind_path=0x82aabd5 "", scope=0, expr=0x8265a95 "(objectclass=*)", 
    attrs=0xbfde68b0, args=0x0, res=0xbfde68b8) at libads/ldap_utils.c:60
#14 0x0824403a in ads_do_search_retry (ads=0x83590b0, bind_path=0x82aabd5 "", 
    scope=0, expr=0x8265a95 "(objectclass=*)", attrs=0xbfde68b0, 
    res=0xbfde68b8) at libads/ldap_utils.c:124
#15 0x0823702c in ads_USN (ads=0x83590b0, usn=0x8333df4) at libads/ldap.c:2330
#16 0x080b42f9 in sequence_number (domain=0x8333970, seq=0x8333df4)
    at nsswitch/winbindd_ads.c:1021
#17 0x08098ad1 in refresh_sequence_number (domain=0x8333970, 
    force=<value optimized out>) at nsswitch/winbindd_cache.c:479
#18 0x080990f9 in wcache_fetch (cache=0x8332888, domain=0x8333970, 
    format=0x82609bd "NS/%s/%s") at nsswitch/winbindd_cache.c:601
#19 0x0809b74d in name_to_sid (domain=0x8333970, mem_ctx=0x82e93c8, 
    domain_name=0xbfde6f24 "HKOFFICE", name=0xbfde7024 "root", 
    sid=0xbfde6c74, type=0xbfde6cb8) at nsswitch/winbindd_cache.c:1358
#20 0x08094391 in winbindd_lookup_sid_by_name (mem_ctx=0x82e93c8, 
    domain=0x8333970, domain_name=0xbfde6f24 "HKOFFICE", 
    name=0xbfde7024 "root", sid=0xbfde6c74, type=0xbfde6cb8)
    at nsswitch/winbindd_util.c:707
#21 0x080bde18 in winbindd_dual_lookupname (domain=0x8333970, 
    state=0xbfde6dc8) at nsswitch/winbindd_async.c:953
#22 0x080b9598 in schedule_async_request (child=0x8333e48)
    at nsswitch/winbindd_dual.c:481
#23 0x0809604e in init_child_connection (domain=0x8333970, 
    continuation=0x80badb0 <domain_init_recv>, private_data=0x8336c20)
    at nsswitch/winbindd_util.c:373
#24 0x080bafa6 in async_domain_request (mem_ctx=0x8335660, domain=0x8333970, 
    request=0x83356e0, response=0x8335f40, 
    continuation=0x80967a0 <trustdom_recv>, private_data_data=0x8334318)
    at nsswitch/winbindd_dual.c:359
#25 0x08096690 in rescan_trusted_domains () at nsswitch/winbindd_util.c:217
#26 0x0808c1df in main (argc=) at nsswitch/winbindd.c:754
The program is running.  Quit anyway (and detach it)? (y or n) [answered Y; input not from terminal]

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https://bugs.launchpad.net/bugs/854457

Title:
  Panic or segfault in Samba every 30 mins

Status in “samba” package in Ubuntu:
  New

Bug description:
  The Samba 'panic action' script, /usr/share/samba/panic-action, is called every 30 mins or so. The message instructs me to report this as a bug here. I am using Samba to connect from Ubuntu 10.04 to Windows 7. The problems have started since replacing a previous Windows XP with this Windows 7. File sharing & printing working OK in both directions.  Samba version is 2.3.4.7.  Stack trace is:
  [Thread debugging using libthread_db enabled]
  0xb711d430 in __kernel_vsyscall ()
  #0  0xb711d430 in __kernel_vsyscall ()
  #1  0xb6d0d7d3 in waitpid () from /lib/tls/i686/cmov/libc.so.6
  #2  0xb6caede3 in ?? () from /lib/tls/i686/cmov/libc.so.6
  #3  0xb6ea927d in system () from /lib/tls/i686/cmov/libpthread.so.0
  #4  0xb746a8dd in smb_panic (why=0xb78109a2 "internal error")
      at lib/util.c:1486
  #5  0xb7457dfe in fault_report (sig=11) at lib/fault.c:52
  #6  sig_fault (sig=11) at lib/fault.c:75
  #7  <signal handler called>
  #8  0xb6ce97a0 in ?? () from /lib/tls/i686/cmov/libc.so.6
  #9  0xb743fdf8 in rep_strlcpy (d=0xbff4746c "", s=0x0, bufsize=256)
      at ../lib/replace/replace.c:65
  #10 0xb7479137 in connections_fetch_entry (mem_ctx=0x0, conn=0xb8f99700, 
      name=0x0) at lib/conn_tdb.c:65
  #11 0xb71da91f in yield_connection (conn=0xb8f99700, name=0x0)
      at smbd/connection.c:33
  #12 0xb724f09e in close_cnum (conn=0xb8f99700, vuid=100) at smbd/service.c:1245
  #13 0xb7201818 in reply_tdis (req=0xb8fadba8) at smbd/reply.c:4747
  #14 0xb724dc0e in switch_message (type=<value optimized out>, req=0xb8fadba8, 
      size=39) at smbd/process.c:1377
  #15 0xb724e07d in construct_reply (conn=<value optimized out>, 
      inbuf=<value optimized out>, nread=39, unread_bytes=0, 
      encrypted=<value optimized out>, deferred_pcd=0x0) at smbd/process.c:1408
  #16 process_smb (conn=<value optimized out>, inbuf=<value optimized out>, 
      nread=39, unread_bytes=0, encrypted=<value optimized out>, 
      deferred_pcd=0x0) at smbd/process.c:1471
  #17 0xb724e958 in smbd_server_connection_read_handler (ev=0xb8f981b8, 
      fde=0xb8f1e830, flags=<value optimized out>, private_data=0xb8f67648)
      at smbd/process.c:1887
  #18 smbd_server_connection_handler (ev=0xb8f981b8, fde=0xb8f1e830, 
      flags=<value optimized out>, private_data=0xb8f67648)
      at smbd/process.c:1901
  #19 0xb747bf84 in run_events (ev=0xb8f981b8, selrtn=1, read_fds=0xbff4796c, 
      write_fds=0xbff478ec) at lib/events.c:134
  #20 0xb724d4a2 in smbd_server_connection_loop_once () at smbd/process.c:820
  #21 smbd_process () at smbd/process.c:2178
  #22 0xb7750cf8 in smbd_accept_connection (ev=0xb8f981b8, fde=0xb8fab0c0, 
      flags=1, private_data=0xb8fab190) at smbd/server.c:395
  #23 0xb747bf84 in run_events (ev=0xb8f981b8, selrtn=1, read_fds=0xbff47c7c, 
      write_fds=0xbff47bfc) at lib/events.c:134
  #24 0xb747c23f in s3_event_loop_once (ev=0xb8f981b8, 
      location=0xb789a3ab "smbd/server.c:681") at lib/events.c:193
  #25 0xb747c888 in _tevent_loop_once (ev=0xb8f981b8, 
      location=0xb789a3ab "smbd/server.c:681") at ../lib/tevent/tevent.c:490
  #26 0xb7751a3a in smbd_parent_loop (argc=2, argv=0xbff480b4)
      at smbd/server.c:681
  #27 main (argc=2, argv=0xbff480b4) at smbd/server.c:1251
  --- 
  Architecture: i386
  DistroRelease: Ubuntu 10.04
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  Package: samba 2:3.4.7~dfsg-1ubuntu3.7
  PackageArchitecture: i386
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_GB.utf8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-33.72-generic-pae 2.6.32.41+drm33.18
  RelatedPackageVersions:
   nautilus 1:2.30.1-0ubuntu1.2
   gvfs 1.6.1-0ubuntu1build1
  SambaClientRegression: Yes
  Tags: lucid
  Uname: Linux 2.6.32-33-generic-pae i686
  UserGroups:

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