Re: [Linux-kernel-mentees] [PATCH] block: Fix use-after-free in bdev_del_partition()
From: Christoph Hellwig <hch@lst.de>
Date: 2020-09-03 06:59:55
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linux-kernel-mentees, lkml
On Thu, Sep 03, 2020 at 02:55:34AM -0400, Peilin Ye wrote:
In bdev_del_partition(), `part` is being looked up outside the critical section. This is causing bdev_del_partition() to delete the same partition more than once. Fix it by reverting commit cddae808aeb7.
We've already fix the problem properly: https://git.kernel.dk/cgit/linux-block/commit/?h=block-5.9&id=08fc1ab6d748ab1a690fd483f41e2938984ce353