EPOLL_CTL_ADD failed (Bad file descriptor) in TP5

[tridge at samba.org]

Frank,

 > Yes - this happens with just about every network operation (login,
 > folder access, file access, etc).  
 > 
 > 
 >         toybox:~ # smbd -i
 >         smbd version 4.0.0tp5-SVN-build-23403 started.
 >         Copyright Andrew Tridgell and the Samba Team 1992-2007
 >         smbd: using 'standard' process model
 >         EPOLL_CTL_ADD failed (Bad file descriptor) - falling back to
 >         select()

Does this happen with smbclient or smbtorture?

What we really need is a backtrace showing the code path that causes
this. If you attach to smbd with gdb and set a breakpoint on
events_standard.c:162 then set follow-fork-mode to child, you should
be able to catch this. Then do a "bt full" and send that to us when
the error happens.

For example:

    root at blu:/home/tridge/samba4# gdb --args bin/smbd -i
    GNU gdb 6.6-debian
    Copyright (C) 2006 Free Software Foundation, Inc.
    GDB is free software, covered by the GNU General Public License, and you are
    welcome to change it and/or distribute copies of it under certain conditions.
    Type "show copying" to see the conditions.
    There is absolutely no warranty for GDB.  Type "show warranty" for details.
    This GDB was configured as "i486-linux-gnu"...
    bUsing host libthread_db library "/lib/libthread_db.so.1".
    (gdb) b events_standard.c:162
    Breakpoint 1 at 0x879e788: file lib/events/events_standard.c, line 162.
    (gdb) set follow-fork-mode child
    (gdb) r
    Starting program: /home/tridge/samba/branches/SAMBA_4_0/source/bin/smbd -i
    smbd version 4.0.0tp5-SVN-build-23235 started.
    Copyright Andrew Tridgell and the Samba Team 1992-2007
    smbd: using 'standard' process model


Thanks!

Cheers, Tridge