Re: [PATCH] clk: Really fix deadlock with mmap_sem
From: Russell King - ARM Linux
Date: Fri Dec 12 2014 - 18:26:38 EST
On Fri, Dec 12, 2014 at 03:24:16PM -0800, Mike Turquette wrote:
> Quoting Russell King - ARM Linux (2014-12-12 15:05:43)
> > On Fri, Dec 12, 2014 at 03:04:16PM -0800, Stephen Boyd wrote:
> > > Commit 6314b6796e3c (clk: Don't hold prepare_lock across debugfs
> > > creation, 2014-09-04) forgot to update one place where we hold
> > > the prepare_lock while creating debugfs directories. This means
> > > we still have the chance of a deadlock that the commit was trying
> > > to fix. Actually fix it by moving the debugfs creation outside
> > > the prepare_lock.
> > >
> > > Reported-by: Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>
> > Please use "Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>" rather than this
> > address, thanks.
> Applied to clk-next and fixed up the email address locally.
Please make sure it gets into stable kernels too as v3.18 suffers from
this bug, thanks.
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
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