From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Suraj Jitindar Singh <surajjs@amazon.com>
Cc: linux-ext4@vger.kernel.org, sblbir@amazon.com,
sjitindarsingh@gmail.com, stable@vger.kernel.org
Subject: Re: [PATCH 2/3] ext4: fix potential race between s_group_info online resizing and access
Date: Thu, 20 Feb 2020 00:13:08 -0500 [thread overview]
Message-ID: <20200220051308.GF476845@mit.edu> (raw)
In-Reply-To: <20200219030851.2678-3-surajjs@amazon.com>
On Tue, Feb 18, 2020 at 07:08:50PM -0800, Suraj Jitindar Singh wrote:
> During an online resize an array of pointers to s_group_info gets replaced
> so it can get enlarged. If there is a concurrent access to the array in
> ext4_get_group_info() and this memory has been reused then this can lead to
> an invalid memory access.
>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443
> Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com>
> Cc: stable@vger.kernel.org
Thanks, applied.
- Ted
next prev parent reply other threads:[~2020-02-20 5:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-19 3:08 [PATCH 0/3] ext4: Fix potential races when performing online resizing Suraj Jitindar Singh
2020-02-19 3:08 ` [PATCH 1/3] ext4: introduce macro sbi_array_rcu_deref() to access rcu protected fields Suraj Jitindar Singh
2020-02-19 3:16 ` Jitindar SIngh, Suraj
2020-02-19 3:34 ` Singh, Balbir
2020-02-20 5:04 ` Theodore Y. Ts'o
2020-02-19 3:08 ` [PATCH 2/3] ext4: fix potential race between s_group_info online resizing and access Suraj Jitindar Singh
2020-02-19 20:20 ` Singh, Balbir
2020-02-20 5:13 ` Theodore Y. Ts'o [this message]
2020-02-19 3:08 ` [PATCH 3/3] ext4: fix potential race between s_flex_groups " Suraj Jitindar Singh
2020-02-20 6:14 ` [PATCH 0/3] ext4: Fix potential races when performing online resizing Theodore Y. Ts'o
2020-02-21 0:07 ` Jitindar SIngh, Suraj
-- strict thread matches above, loose matches on Subject: below --
2020-02-21 5:34 [PATCH -v2 0/3] Fix various races in " Theodore Ts'o
2020-02-21 5:34 ` [PATCH 2/3] ext4: fix potential race between s_group_info online resizing and access Theodore Ts'o
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