Re: kern/46402 (LWPs created after exit_lwp() is called can hang the process...)

[Greg Oster <oster%cs.usask.ca@localhost>]

The following reply was made to PR kern/46402; it has been noted by GNATS.

From: Greg Oster <oster%cs.usask.ca@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/46402 (LWPs created after exit_lwp() is called can hang
 the process...)
Date: Thu, 20 Sep 2012 07:43:53 -0600

 On Wed, 19 Sep 2012 21:23:07 +0000 (UTC)
 rmind%NetBSD.org@localhost wrote:
 
 > Synopsis: LWPs created after exit_lwp() is called can hang the
 > process...
 > 
 > State-Changed-From-To: analyzed->feedback
 > State-Changed-By: rmind%NetBSD.org@localhost
 > State-Changed-When: Wed, 19 Sep 2012 21:23:06 +0000
 > State-Changed-Why:
 > Can you please try the following patch?
 > 
 > http://www.netbsd.org/~rmind/lwp_wait_fix.diff
 > 
 
 After 376883 iterations on the test loop thing hung:
 
 USER      PID %CPU %MEM    VSZ   RSS TTY     STAT STARTED    TIME
 COMMAND UID   PID  PPID   CPU PRI NI    VSZ   RSS WCHAN    STAT
 TTY        TIME COMMAND
 root    27779  0.0  0.1 798304  1396 ttyp0   DEl+  2:19AM 0:00.01
 (t_cond   0 27779   410 93985  63  0 798304  1396 -        DEl+ ttyp0
 0:00.01 (t_cond) root    27779  0.0  0.1 798304  1396 ttyp0   DEl+
 2:19AM 0:00.01 (t_cond   0 27779   410 93985  95  0 798304  1396
 lwpwait  DEl+ ttyp0 0:00.01 (t_cond)
 
 (sorry for the cut'n'paste mess... weekend plans have changed, and I
 have to run.. I can attempt to test more over the next days...)
 
 Later...
 
 Greg Oster