Two net_sched fixes for stable

Hi, David

Can you queue the following commits for stable? They fix a
sleep-in-atomic warning reported by Roland.


commit efbf78973978b0d25af59bc26c8013a942af6e64
Author: Cong Wang [off-list ref]
Date:   Mon Dec 4 10:48:18 2017 -0800

    net_sched: get rid of rcu_barrier() in tcf_block_put_ext()

commit df45bf84e4f5a48f23d4b1a07d21d566e8b587b2
Author: Jiri Pirko [off-list ref]
Date:   Fri Dec 8 19:27:27 2017 +0100

    net: sched: fix use-after-free in tcf_block_put_ext


This problem was introduced by:

commit e2ef75445340ca7ec2c4558f84ae6c8c5d650fc8
Author: Cong Wang [off-list ref]
Date:   Mon Sep 11 16:33:31 2017 -0700

    net_sched: fix reference counting of tc filter chain

so should apply to 4.14 too.

For 4.15, they can just apply nearly cleanly. However, it is not
straight-forward to cherry pick them to 4.14 due to some big changes
between 4.14 and 4.15.

Please let me know how you want to handle this for 4.14.

Thanks.

From: Cong Wang <redacted>
Date: Tue, 6 Feb 2018 11:25:10 -0800

Can you queue the following commits for stable? They fix a
sleep-in-atomic warning reported by Roland.

commit efbf78973978b0d25af59bc26c8013a942af6e64
Author: Cong Wang [off-list ref]
Date:   Mon Dec 4 10:48:18 2017 -0800

    net_sched: get rid of rcu_barrier() in tcf_block_put_ext()

commit df45bf84e4f5a48f23d4b1a07d21d566e8b587b2
Author: Jiri Pirko [off-list ref]
Date:   Fri Dec 8 19:27:27 2017 +0100

    net: sched: fix use-after-free in tcf_block_put_ext

This problem was introduced by:

commit e2ef75445340ca7ec2c4558f84ae6c8c5d650fc8
Author: Cong Wang [off-list ref]
Date:   Mon Sep 11 16:33:31 2017 -0700

    net_sched: fix reference counting of tc filter chain

so should apply to 4.14 too.

For 4.15, they can just apply nearly cleanly. However, it is not
straight-forward to cherry pick them to 4.14 due to some big changes
between 4.14 and 4.15.

Please let me know how you want to handle this for 4.14.

Ok, I sent this off for 4.15 -stable but I need you to do the
4.14 backport.

Thank you.

On Tue, Feb 6, 2018 at 12:20 PM, David Miller [off-list ref] wrote:

From: Cong Wang <redacted>

quoted

Please let me know how you want to handle this for 4.14.

Ok, I sent this off for 4.15 -stable but I need you to do the
4.14 backport.

OK. I assume you mean I should send the backports directly
to stable. I will do it.

Thanks.

From: Cong Wang <redacted>
Date: Tue, 6 Feb 2018 21:11:15 -0800

On Tue, Feb 6, 2018 at 12:20 PM, David Miller [off-list ref] wrote:

quoted

From: Cong Wang <redacted>

quoted

Please let me know how you want to handle this for 4.14.

Ok, I sent this off for 4.15 -stable but I need you to do the
4.14 backport.

OK. I assume you mean I should send the backports directly
to stable. I will do it.

Yes, please.  You can CC: me.