From: Andrew Morton <akpm@linux-foundation.org>
To: Ren Wei <n05ec@lzu.edu.cn>
Cc: linux-kernel@vger.kernel.org,
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
Yuan Tan <yuantan098@gmail.com>, Yifan Wu <yifanwucs@gmail.com>,
Juefei Pu <tomapufckgml@gmail.com>, Xin Liu <bird@lzu.edu.cn>,
Yemu Lu <prcups@krgm.moe>,
linux-fsdevel@vger.kernel.org,
Christian Brauner <brauner@kernel.org>
Subject: Re: [PATCH 1/1] fat: restore original value when fat_ent_write failed
Date: Sun, 28 Jun 2026 13:27:10 -0700 [thread overview]
Message-ID: <20260628132710.61ba480f961e8b87f02f80a2@linux-foundation.org> (raw)
In-Reply-To: <20260525085649.781643-1-n05ec@lzu.edu.cn>
On Mon, 25 May 2026 16:56:49 +0800 Ren Wei <n05ec@lzu.edu.cn> wrote:
> From: Yemu Lu <prcups@krgm.moe>
>
> fat_ent_write() may have committed the new link to the primary FAT
> but then failed on the mirror copy, leaving the chain pointing to
> new_dclus even though the caller will free it. Restore the original
> value to keep the chain consistent.
Thanks.
When fixing bugs, please be careful to describe the userspace-visible
effects of that bug. Here I'm assuming "dereferences freed pointer,
kernel crashes"?
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Cc: stable@kernel.org
prev parent reply other threads:[~2026-06-28 20:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-25 8:56 [PATCH 1/1] fat: restore original value when fat_ent_write failed Ren Wei
2026-06-03 6:20 ` OGAWA Hirofumi
2026-06-28 20:27 ` Andrew Morton [this message]
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