linux-kernel - Re: [PATCH] mm/swap: fix swap_info_struct race between swapoff and get_swap

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Date:   Sun, 2 Apr 2023 20:37:23 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Rongwei Wang <rongwei.wang@...ux.alibaba.com>,
        akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-stable@...r.kernel.org
Subject: Re: [PATCH] mm/swap: fix swap_info_struct race between swapoff and
 get_swap_pages()

On Sun, Apr 02, 2023 at 06:19:20AM +0800, Rongwei Wang wrote:
> Without this modification, a core will wait (mostly)
"Currently, a core will ..."

> But, a worse consequence, panic also can be caused by
"However, in the worst case, ..."

> In this patch, we lock p->lock before calling
"Lock p->lock before calling ..."

> We also find this problem exists in stable 5.10.

So, you claim that 5.15.y and 6.1.y aren't affected, right?

Also, Cc: stable@...r.kernel.org on the SoB area (as pointed by kernel
test robot [1].

Thanks.

[1]: https://lore.kernel.org/stable/ZCiuGEkyk%2F1Afisk@ec83ac1404bb/
 
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