Re: Uninterruptible sleep processes

Wayne J. Salamon (salamon@cmr.ncsl.nist.gov)
Fri, 27 Mar 1998 15:12:00 -0500


A.N.Kuznetsov wrote:
>
> In article <351BF365.6EC43048@cmr.ncsl.nist.gov> you wrote:
> : The process hangs at the ioctl() call.
>
> Please look at syslog, did you have oops before it?
>
No.

> If not, please, try to figure out what you did before it.
> Someone forgot to release device lock, and it is not easy
> to find without additional information.
>

What I've given is just about all the code (I know,
famous last words: "Nothing else could be wrong!")
On a freshly booted system, the code hangs just by
doing the socket, bind, and ioctl calls. However,
I was a bit premature in mailing to the kernel list.
This problem only occurs with a kernel patched to include
Linux-ATM support, and not in the standard distribution
kernel. The process hangs when using a socket bound to
an IP-Ethernet and IP-ATM interface.
If someone wants some info in helping to track down
the uninterruptible sleep processes, then I can
easily reproduce that problem.


> Alexey Kuznetsov

WJS

-- 
----------------------------------------------------------------------
 | Wayne J. Salamon   | National Institute of Standards & Technology |
 | Computer Scientist | (301) 975-4432                               |
 | wsalamon@nist.gov  |                                              |
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