lkml.org 
[lkml]   [2001]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Re: 8139too: defunct threads
Hi,

On Sat, Apr 14, 2001 at 07:53:28PM +0100, Alan Cox wrote:
> > Rod's init version (from RH 7.0) doesn't reap children that died before
> > it was started. Is that an init bug or should the kernel reap them
> > before the execve?
> I would say thats an init bug

It doesn't seem to be that simple.

Redhat's init does child reaping in its SIGCHLD handler using the
following:

while((pid = waitpid(-1, &st, WNOHANG)) != 0) {
if (errno == ECHILD) break;
/* do some stuff, nothing which could break out of the loop */
}

This should reap all leftover childs from kernel startup when init
receives SIGCHLD for the first time, but somehow the kernel seems to
skip them while searching for a dead process in sys_wait4(). I can't
do any further testing because I don't have a 8139 NIC, but I can't
find a problem in init's child reaping code.

Please tell me if I'm missing something, but I think this is really a
kernel issue, not a bug in init.

Andreas
--
I've finally learned what "upward compatible" means. It means we get to
keep all our old mistakes.
-- Dennie van Tassel

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:17    [W:0.057 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site