linux-kernel - Re: [PATCH 5.10 0/5] aio poll fixes for 5.10

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Message-ID: <YbcA1RRqrnup6IN+@kroah.com>
Date:   Mon, 13 Dec 2021 09:14:13 +0100
From:   Greg KH <greg@...ah.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5.10 0/5] aio poll fixes for 5.10

On Sun, Dec 12, 2021 at 11:46:03AM -0800, Eric Biggers wrote:
> On Sun, Dec 12, 2021 at 02:54:45PM +0100, Greg KH wrote:
> > On Fri, Dec 10, 2021 at 03:48:00PM -0800, Eric Biggers wrote:
> > > Backport the aio poll fixes to 5.10.  This resolves a conflict in
> > > aio_poll_wake() in patch 4.  It's a "trivial" conflict, but I'm sending
> > > this to make sure it doesn't get dropped.
> > > 
> > > Eric Biggers (5):
> > >   wait: add wake_up_pollfree()
> > >   binder: use wake_up_pollfree()
> > >   signalfd: use wake_up_pollfree()
> > >   aio: keep poll requests on waitqueue until completed
> > >   aio: fix use-after-free due to missing POLLFREE handling
> > > 
> > >  drivers/android/binder.c        |  21 ++--
> > >  fs/aio.c                        | 184 ++++++++++++++++++++++++++------
> > >  fs/signalfd.c                   |  12 +--
> > >  include/linux/wait.h            |  26 +++++
> > >  include/uapi/asm-generic/poll.h |   2 +-
> > >  kernel/sched/wait.c             |   7 ++
> > >  6 files changed, 195 insertions(+), 57 deletions(-)
> > > 
> > > -- 
> > > 2.34.1
> > > 
> > 
> > Thanks for all of the backports, much appreciated and now queued up.
> > 
> > greg k-h
> 
> Thanks!  Can you apply the following commit to 5.15-stable too?  I missed that
> it's needed in 5.15:
> 
> 	commit 4b3749865374899e115aa8c48681709b086fe6d3
> 	Author: Xie Yongji <xieyongji@...edance.com>
> 	Date:   Mon Sep 13 19:19:28 2021 +0800
> 
> 	    aio: Fix incorrect usage of eventfd_signal_allowed()

Now queued up, thanks.

greg k-h