From: Oleg Nesterov <oleg@redhat.com>
To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Joseph Salisbury <joseph.salisbury@canonical.com>,
penguin-kernel@I-love.SAKURA.ne.jp, rientjes@google.com,
Linus Torvalds <torvalds@linux-foundation.org>,
tj@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Kernel Team <kernel-team@lists.ubuntu.com>
Subject: Re: [v3.13][v3.14][Regression] kthread: make kthread_create() killable
Date: Tue, 18 Mar 2014 18:50:24 +0100 [thread overview]
Message-ID: <20140318175024.GB11866@redhat.com> (raw)
In-Reply-To: <20140317231814.3249e6d2@alan.etchedpixels.co.uk>
On 03/17, One Thousand Gnomes wrote:
>
> > and b) permits userspace to produce surprising results in the kernel,
> > which I suspect is what we're seeing here.
>
> There is enough information for kernel side code to decide whether a
> signal came from kernel or userspace.
Not really. SIGKILL can come without siginfo. Other signals too, but
SIGKILL especially.
> Then again - it's not clear that it
> should ever have to.
Yes, agreed.
Oleg.
prev parent reply other threads:[~2014-03-18 17:51 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-14 20:46 [v3.13][v3.14][Regression] kthread: make kthread_create() killable Joseph Salisbury
2014-03-15 0:43 ` Tetsuo Handa
2014-03-16 15:13 ` Tetsuo Handa
2014-03-16 16:25 ` Oleg Nesterov
2014-03-17 12:38 ` [v3.13][v3.14][Regression] kthread: make kthread_create()killable Tetsuo Handa
2014-03-17 14:22 ` Oleg Nesterov
2014-03-18 12:03 ` [v3.13][v3.14][Regression] kthread: makekthread_create()killable Tetsuo Handa
2014-03-18 17:16 ` Oleg Nesterov
2014-03-19 11:49 ` [v3.13][v3.14][Regression] kthread:makekthread_create()killable Tetsuo Handa
2014-03-19 16:13 ` Joseph Salisbury
2014-03-19 17:52 ` Oleg Nesterov
2014-03-19 18:29 ` please fix FUSION (Was: [v3.13][v3.14][Regression] kthread:makekthread_create()killable) Oleg Nesterov
2014-03-19 19:42 ` Oleg Nesterov
2014-03-19 21:04 ` Joseph Salisbury
2014-03-20 16:46 ` Joseph Salisbury
2014-03-20 19:23 ` Oleg Nesterov
2014-03-21 18:34 ` Oleg Nesterov
2014-03-21 19:32 ` Linus Torvalds
2014-03-21 20:31 ` Oleg Nesterov
2014-03-21 22:56 ` James Bottomley
2014-03-22 6:25 ` please fix FUSION (Was: [v3.13][v3.14][Regression]kthread:makekthread_create()killable) Tetsuo Handa
2014-03-22 19:25 ` Oleg Nesterov
2014-03-22 20:48 ` James Bottomley
2014-03-24 17:01 ` Oleg Nesterov
2014-03-22 21:25 ` Thomas Gleixner
2014-03-22 22:01 ` Thomas Gleixner
2014-03-22 23:57 ` please fix FUSION (Was:[v3.13][v3.14][Regression]kthread:makekthread_create()killable) Tetsuo Handa
2014-03-23 8:04 ` Thomas Gleixner
2014-03-23 14:19 ` James Bottomley
2014-03-23 14:28 ` Thomas Gleixner
2014-03-23 14:29 ` James Bottomley
2014-03-22 23:50 ` Tetsuo Handa
2014-03-17 20:02 ` [v3.13][v3.14][Regression] kthread: make kthread_create() killable Andrew Morton
2014-03-17 20:19 ` Oleg Nesterov
2014-03-17 20:39 ` Andrew Morton
2014-03-18 17:45 ` Oleg Nesterov
2014-06-03 13:03 ` [PATCH] kthread: Fix return value of kthread_create() upon SIGKILL Tetsuo Handa
2014-06-03 21:35 ` David Rientjes
2014-03-17 21:32 ` [v3.13][v3.14][Regression] kthread: make kthread_create()killable Tetsuo Handa
2014-03-17 23:18 ` [v3.13][v3.14][Regression] kthread: make kthread_create() killable One Thousand Gnomes
2014-03-18 17:50 ` Oleg Nesterov [this message]
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