[Samba] SMBD using nearly 100 percent CPU

[andy liebman]

Over the past few months, I have seen many postings here about runaway 
smbd processes with Samba versions 3.0.20 and above. Personally, it 
never happened to me until today. Also, I have stuck with Samba 3.0.13 
on most of my machines because of THIS reported issue and a couple of 
other issues that I have experienced.

However, I have a machine running RIGHT NOW where smbd has gone out of 
control. This machine is running 3.0.20b. If it would help, and if 
somebody could tell me exactly -- and I mean exactly -- what to do on my 
machine to capture information that might help explain what is going on, 
I would be happy to collect the information.

But, it has to be in the next couple of hours. It is 8:30 am Friday in 
Boston, MA USA. I have to reboot the machine to use it in about 3 hours.

Note that rpc.statd also seems to be out of control. Don't know if it is 
related.

Andy Liebman

Here's what TOP looks like:

Tasks: 170 total,   2 running, 168 sleeping,   0 stopped,   0 zombie
Cpu(s): 12.6% us, 34.1% sy,  0.0% ni, 20.3% id,  0.0% wa,  0.0% hi, 33.1% si
Mem:   2075844k total,  2019784k used,    56060k free,     7668k buffers
Swap:  1012052k total,     2556k used,  1009496k free,  1820308k cached

   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  4743 root      25   0  8664 2164 1416 R 99.7  0.1 621:48.83 smbd
  2569 root      15   0  1692  688  584 S 58.8  0.0 323:00.52 rpc.statd
  4928 andrew    15   0 13604  11m 1592 S  0.7  0.6   0:10.55 Xvnc
11509 andrew    16   0 27520  12m   9m S  0.3  0.6   0:01.64 konsole
     1 root      16   0  1560  536  472 S  0.0  0.0   0:00.70 init
     2 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0
     3 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0
     4 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1
     5 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/1
     6 root      10  -5     0    0    0 S  0.0  0.0   0:00.09 events/0
     7 root      10  -5     0    0    0 S  0.0  0.0   0:05.15 events/1
     8 root      11  -5     0    0    0 S  0.0  0.0   0:00.01 khelper
     9 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 kthread
    12 root      20  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid
   124 root      10  -5     0    0    0 S  0.0  0.0   0:00.05 kblockd/0
   125 root      10  -5     0    0    0 S  0.0  0.0   0:00.05 kblockd/1
   167 root      15   0     0    0    0 S  0.0  0.0   3:42.50 pdflush