linux-kernel - Re: [PATCH linux-4.19.y 0/5] fix memleak of bfq weights

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Message-ID: <YcMVpesszGG2EABJ@kroah.com>
Date:   Wed, 22 Dec 2021 13:10:13 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Yu Kuai <yukuai3@...wei.com>
Cc:     jack@...e.cz, paolo.valente@...aro.org, axboe@...nel.dk,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com
Subject: Re: [PATCH linux-4.19.y 0/5] fix memleak of bfq weights_tree node

On Tue, Dec 21, 2021 at 07:38:44PM +0800, Yu Kuai wrote:
> Our test found that bfq_weight_counter can leak quite easy. This problem
> can be fixed by patch 4, and other patches is needed to backport patch
> 4.
> 
> Federico Motta (2):
>   block, bfq: improve asymmetric scenarios detection
>   block, bfq: fix asymmetric scenarios detection
> 
> Paolo Valente (3):
>   block, bfq: fix decrement of num_active_groups
>   block, bfq: fix queue removal from weights tree
>   block, bfq: fix use after free in bfq_bfqq_expire
> 
>  block/bfq-iosched.c | 287 +++++++++++++++++++++++++++-----------------
>  block/bfq-iosched.h |  76 +++++++++---
>  block/bfq-wf2q.c    |  56 +++++----
>  3 files changed, 270 insertions(+), 149 deletions(-)
> 
> -- 
> 2.31.1
> 

All now queued up, thanks.

greg k-h