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From: Tejun Heo <tj@kernel.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Al Viro <viro@ZenIV.linux.org.uk>,
	Jan Kratochvil <jan.kratochvil@redhat.com>,
	Lennart Poettering <lpoetter@redhat.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Michal Schmidt <mschmidt@redhat.com>,
	Roland McGrath <roland@hack.frob.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/5] kill the racy EXIT_ZOMBIE->EXIT_DEAD->EXIT_ZOMBIE transition
Date: Thu, 20 Feb 2014 14:48:48 -0500	[thread overview]
Message-ID: <20140220194848.GA6573@mtj.dyndns.org> (raw)
In-Reply-To: <20140220173838.GA21825@redhat.com>

On Thu, Feb 20, 2014 at 06:38:38PM +0100, Oleg Nesterov wrote:
> Tejun, unless I missed something WSTOPPED logic is broken if a process
> has a zombie/ptraced leader, "A zombie ptracee is only visible to its
> ptracer" is wrong in this case. Plus perhaps some cleanups make sense.

Heh, I already forgot most details about ptrace. :) Is it something
urgent?  If so, I'll try to get back to it right away; otherwise, I'll
probably be able to get around to it in several weeks.

Thanks.

-- 
tejun

  parent reply	other threads:[~2014-02-20 19:48 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-20 17:38 Oleg Nesterov
2014-02-20 17:38 ` [PATCH 1/5] wait: fix reparent_leader() vs EXIT_DEAD->EXIT_ZOMBIE race Oleg Nesterov
2014-02-20 17:39 ` [PATCH 2/5] wait: introduce EXIT_TRACE to avoid the racy EXIT_DEAD->EXIT_ZOMBIE transition Oleg Nesterov
2014-02-20 17:39 ` [PATCH 3/5] wait: use EXIT_TRACE only if thread_group_leader(zombie) Oleg Nesterov
2014-02-20 17:39 ` [PATCH 4/5] wait: completely ignore the EXIT_DEAD tasks Oleg Nesterov
2014-02-20 17:39 ` [PATCH 5/5] wait: swap EXIT_ZOMBIE and EXIT_DEAD to hide EXIT_TRACE from user-space Oleg Nesterov
2014-02-20 19:48 ` Tejun Heo [this message]
2014-02-24 15:51   ` [PATCH 0/5] kill the racy EXIT_ZOMBIE->EXIT_DEAD->EXIT_ZOMBIE transition Oleg Nesterov
2014-02-26 16:55 ` [PATCH 0/2] wait: WSTOPPED & ptrace fixes Oleg Nesterov
2014-02-26 16:55   ` [PATCH 1/2] wait: WSTOPPED|WCONTINUED hangs if a zombie child is traced by real_parent Oleg Nesterov
2014-02-26 16:56   ` [PATCH 2/2] wait: WSTOPPED|WCONTINUED doesn't work if a zombie leader is traced by another process Oleg Nesterov

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