Bug 4718 - Winbind with idmap = rid segfaults when connecting from windows host
Winbind with idmap = rid segfaults when connecting from windows host
Status: RESOLVED FIXED
Product: Samba 3.0
Classification: Unclassified
Component: winbind
3.0.25a
Other Linux
: P3 normal
: none
Assigned To: Samba Bugzilla Account
Samba QA Contact
http://bugs.debian.org/428411
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2007-06-20 09:25 UTC by Debian samba package maintainers (PUBLIC MAILING LIST)
Modified: 2007-06-20 11:39 UTC (History)
0 users

See Also:


Attachments
smb.conf file (10.55 KB, text/plain)
2007-06-20 09:26 UTC, Debian samba package maintainers (PUBLIC MAILING LIST)
no flags Details
Level 10 debug log of a failed session (16.16 KB, application/x-zip)
2007-06-20 09:27 UTC, Debian samba package maintainers (PUBLIC MAILING LIST)
no flags Details
gdb output (6.96 KB, text/plain)
2007-06-20 09:28 UTC, Debian samba package maintainers (PUBLIC MAILING LIST)
no flags Details

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Description Debian samba package maintainers (PUBLIC MAILING LIST) 2007-06-20 09:25:18 UTC
From a user of the Debian packages in unstable (3.0.25a):

I am using the rid idmap backend to resolve names from my windows 2003
domain. This system was working until I updated the packages recently. I
receive an e-mail from samba whenever I try to connect from my windows
server:
The Samba 'panic action' script, /usr/share/samba/panic-action,
was called for PID 17401 (/usr/sbin/winbindd).

Looking at /var/log/samba/log.winbind shows the following entries
(partial log):

[2007/06/11 10:19:24, 3] nsswitch/winbindd_misc.c:winbindd_ping(470)
  [    0]: ping
[2007/06/11 10:19:24, 10] nsswitch/winbindd.c:process_request(311)
  process_request: request fn PING
[2007/06/11 10:19:24, 3] nsswitch/winbindd_misc.c:winbindd_ping(470)
  [    0]: ping
[2007/06/11 10:19:24, 10] nsswitch/winbindd.c:process_request(311)
  process_request: request fn ALLOCATE_GID
[2007/06/11 10:19:24, 0] lib/fault.c:fault_report(41)
  ===============================================================
[2007/06/11 10:19:24, 0] lib/fault.c:fault_report(42)
  INTERNAL ERROR: Signal 6 in pid 17395 (3.0.25a)
  Please read the Trouble-Shooting section of the Samba3-HOWTO
[2007/06/11 10:19:24, 0] lib/fault.c:fault_report(44)

  From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2007/06/11 10:19:24, 0] lib/fault.c:fault_report(45)
  ===============================================================
[2007/06/11 10:19:24, 0] lib/util.c:smb_panic(1632)
  PANIC (pid 17395): internal error
[2007/06/11 10:19:24, 0] lib/util.c:log_stack_trace(1736)
  BACKTRACE: 13 stack frames:
   #0 /usr/sbin/winbindd(log_stack_trace+0x1c) [0x4d1c3c]
   #1 /usr/sbin/winbindd(smb_panic+0x43) [0x4d1d23]
   #2 /usr/sbin/winbindd [0x4bfb52]
   #3 /lib/libc.so.6 [0x2b863eea0ca0]
   #4 /lib/libc.so.6(gsignal+0x35) [0x2b863eea0c45]
   #5 /lib/libc.so.6(abort+0x110) [0x2b863eea25c0]
   #6 /usr/sbin/winbindd(talloc_get_name+0x38) [0x4b8a28]
   #7 /usr/sbin/winbindd(talloc_check_name+0x1e) [0x4b8c7e]
   #8 /usr/sbin/winbindd(talloc_check_name_abort+0x19) [0x4d1e59]
   #9 /usr/sbin/winbindd [0x476bc4]
   #10 /usr/sbin/winbindd(main+0x83c) [0x44fa2c]
   #11 /lib/libc.so.6(__libc_start_main+0xf4) [0x2b863ee8d8e4]
   #12 /usr/sbin/winbindd [0x44e0e9]
[2007/06/11 10:19:24, 0] lib/util.c:smb_panic(1637)
  smb_panic(): calling panic action [/usr/share/samba/panic-action
17395]
BFD: /usr/sbin/winbindd: don't know how to handle OS specific section
`.gnu.hash' [0x6ffffff6]
"/usr/sbin/winbindd": not in executable format: File format not
recognized
BFD: /usr/sbin/winbindd: don't know how to handle OS specific section
`.gnu.hash' [0x6ffffff6]
"/usr/sbin/winbindd": not in executable format: File format not
recognized
//17395: No such file or directory.
No stack.


Downgrading back to 3.0.24 from Debian testing solved the issue
Comment 1 Debian samba package maintainers (PUBLIC MAILING LIST) 2007-06-20 09:26:33 UTC
Created attachment 2772 [details]
smb.conf file
Comment 2 Debian samba package maintainers (PUBLIC MAILING LIST) 2007-06-20 09:27:22 UTC
Created attachment 2773 [details]
Level 10 debug log of a failed session
Comment 3 Debian samba package maintainers (PUBLIC MAILING LIST) 2007-06-20 09:28:48 UTC
Created attachment 2774 [details]
gdb output

This attachment is the output of gdb when running unstripped winbind binary  from the samba-dbg Debian package
Comment 4 Simo Sorce 2007-06-20 11:39:40 UTC
THe backtrace is lacking symbols, but from the context of the debug output I think this problem is completely fixed in revision 23525
This will be out with 3.0.25b