From: Oleg Nesterov <oleg@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Rik van Riel <riel@redhat.com>, Christoph Lameter <cl@linux.com>,
Tejun Heo <tj@kernel.org>, Rusty Russell <rusty@rustcorp.com.au>,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/1] Revert "kmod: handle UMH_WAIT_PROC from system unbound workqueue"
Date: Wed, 14 Oct 2015 20:51:53 +0200 [thread overview]
Message-ID: <20151014185153.GA8117@redhat.com> (raw)
Hello,
I noticed by accident the kworker zombies on my testing machine.
Can't reproduce (although I think it won't be hard to make a
test-case), but I think the reason is clear, see the changelog.
We could fix this by using kthread_create() if !UMH_WAIT_PROC,
but imo it would be better to revert this change at least for
now. If we really want to avoid the extra kernel_thread(), we
can make another patch which also avoids sys_wait4() and the
games with SIGCHLD; we can rely on wait_chldexit.
Oleg.
next reply other threads:[~2015-10-14 18:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-14 18:51 Oleg Nesterov [this message]
2015-10-14 18:52 ` [PATCH 1/1] Revert "kmod: handle UMH_WAIT_PROC from system unbound workqueue" Oleg Nesterov
2015-10-15 13:37 ` Frederic Weisbecker
2015-10-15 15:18 ` Oleg Nesterov
2015-10-15 15:34 ` Frederic Weisbecker
2015-10-15 14:37 ` [PATCH 0/1] kmod: don't run async usermode helper as a child of kworker thread Oleg Nesterov
2015-10-15 14:37 ` Oleg Nesterov
2015-10-15 15:52 ` Frederic Weisbecker
2015-10-15 16:32 ` Oleg Nesterov
2015-10-15 16:53 ` Frederic Weisbecker
2015-10-15 17:51 ` Oleg Nesterov
2015-10-15 17:52 ` [PATCH v2 1/1] " Oleg Nesterov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20151014185153.GA8117@redhat.com \
--to=oleg@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=riel@redhat.com \
--cc=rusty@rustcorp.com.au \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox