From: Tejun Heo <tj@kernel.org>
To: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: sedat.dilek@gmail.com, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [Linux v4.2] workqueue: llvmlinux: acpid: BUG: sleeping function called from invalid context at kernel/workqueue.c:2680
Date: Thu, 10 Sep 2015 10:53:52 -0400 [thread overview]
Message-ID: <20150910145352.GE8114@mtj.duckdns.org> (raw)
In-Reply-To: <20150910145227.GD8114@mtj.duckdns.org>
On Thu, Sep 10, 2015 at 10:52:27AM -0400, Tejun Heo wrote:
> Hey,
>
> On Thu, Sep 10, 2015 at 09:04:27AM +0800, Lai Jiangshan wrote:
> > I think we need to add might_sleep() on the top of __cancel_work_timer().
> > The might_sleep() on the start_flush_work() doesn't cover all the
> > paths of __cancel_work_timer().
> > And it can help to narrow the area of this bug.
>
> Sure, can you submit a patch?
That said, this one is likely not a bug in the kernel code but more
likely llvm either miscompiling or deviating from gcc behavior on some
corner cases.
Thanks.
--
tejun
next prev parent reply other threads:[~2015-09-10 14:54 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-09 10:24 [Linux v4.2] workqueue: llvmlinux: acpid: BUG: sleeping function called from invalid context at kernel/workqueue.c:2680 Sedat Dilek
2015-09-10 1:04 ` Lai Jiangshan
2015-09-10 14:52 ` Tejun Heo
2015-09-10 14:53 ` Tejun Heo [this message]
2015-09-11 16:12 ` Sedat Dilek
2015-09-14 11:41 ` Sedat Dilek
2015-09-14 14:00 ` Sedat Dilek
2015-09-14 15:25 ` Sedat Dilek
2015-09-23 23:59 ` Sedat Dilek
2015-09-24 6:41 ` Sedat Dilek
2015-09-24 7:57 ` Jiri Kosina
2015-09-24 8:03 ` Jiri Kosina
2015-09-24 8:12 ` Sedat Dilek
2015-09-24 8:21 ` Jiri Kosina
2015-09-25 6:43 ` Sedat Dilek
[not found] ` <CA+icZUWL38tTepmnV0T=TD6aGQKyHbg1rGzD-b_ZW06CPR9s6g@mail.gmail.com>
2015-09-25 12:00 ` Jiri Kosina
2015-09-25 12:13 ` Sedat Dilek
2015-09-25 12:16 ` Jiri Kosina
2015-09-25 12:22 ` Sedat Dilek
2015-09-25 12:40 ` Jiri Kosina
2015-09-25 12:47 ` Sedat Dilek
2015-09-25 13:13 ` Jiri Kosina
2015-09-25 13:18 ` Sedat Dilek
2015-09-27 8:10 ` Sedat Dilek
2015-09-27 8:33 ` Sedat Dilek
2015-09-28 6:50 ` Sedat Dilek
2015-09-28 7:17 ` Sedat Dilek
2015-09-25 12:36 ` Sedat Dilek
2015-09-24 8:08 ` Sedat Dilek
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