Re: [Linux-kernel-mentees] [PATCH] block: Fix use-after-free in bdev_del_partition()

[Peilin Ye]

On Thu, Sep 03, 2020 at 08:59:50AM +0200, Christoph Hellwig wrote:
> 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

Ah, I searched linux-kernel but didn't see your patch, sorry about
that. I should have searched linux-block too.

Thank you,
Peilin