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Date: Tue, 21 Mar 2000 06:40:12 -0800 (PST)
From: elemiere@matra-ms2i.fr
To: freebsd-gnats-submit@FreeBSD.org
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Subject: i386/17526: PB of frequency heuristic in uipc_socket.c in FreeBSD 3.4
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>Number:         17526
>Category:       i386
>Synopsis:       PB of frequency heuristic in uipc_socket.c in FreeBSD 3.4
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 21 06:50:02 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Eric Lemiere
>Release:        FreeBSD 3.4
>Organization:
MS&I
>Environment:
>Description:
Here it is:
When configuring my kernel with the option
HZ = 1000
instead of
HZ = 100
, the following lines in uipc_socket.c lead to a systematic error.
----------------------------------------------
  case SO_RCVTIMEO:
   error = sooptcopyin(sopt, &tv, sizeof tv,
         sizeof tv);
   if (error)
    goto bad;

   if (tv.tv_sec > SHRT_MAX / hz - hz) {
    error = EDOM;
    goto bad;
   }
----------------------------------------------

Would you please chagne your heuristic, so as to change to 1000Hz?
Thanks
>How-To-Repeat:
Kernel configuration
>Fix:
changed the heuristic, but don't know the overall impact...

>Release-Note:
>Audit-Trail:
>Unformatted:


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