Re: [PATCH v2] block: genhd: fix double kfree() in __alloc_disk_node()

To: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH v2] block: genhd: fix double kfree() in __alloc_disk_node()
From: Christoph Hellwig <hch@xxxxxx>
Date: Mon, 20 Sep 2021 10:40:34 +0200
Cc: Christoph Hellwig <hch@xxxxxx>, axboe@xxxxxxxxx, linux-block@xxxxxxxxxxxxxxx
In-reply-to: <692fdc1a-6396-dcf4-c700-2d822f161053@i-love.sakura.ne.jp>
References: <0000000000004a5adf05cc593ca9@google.com> <41766564-08cb-e7f2-4cb2-9ad102f21324@I-love.SAKURA.ne.jp> <3999c511-cd27-1554-d3a6-4288c3eca298@i-love.sakura.ne.jp> <20210920064028.GB26999@lst.de> <c5b78df8-1ab7-04fa-d6e8-c7270c3bc373@i-love.sakura.ne.jp> <20210920080547.GA30362@lst.de> <692fdc1a-6396-dcf4-c700-2d822f161053@i-love.sakura.ne.jp>
User-agent: Mutt/1.5.17 (2007-11-01)

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

References:
- [syzbot] KASAN: use-after-free Read in bdev_free_inode
  - From: syzbot
- Re: [syzbot] KASAN: use-after-free Read in bdev_free_inode
  - From: Tetsuo Handa
- [PATCH] block: genhd: fix double kfree() in __alloc_disk_node()
  - From: Tetsuo Handa
- Re: [PATCH] block: genhd: fix double kfree() in __alloc_disk_node()
  - From: Christoph Hellwig
- Re: [PATCH] block: genhd: fix double kfree() in __alloc_disk_node()
  - From: Tetsuo Handa
- Re: [PATCH] block: genhd: fix double kfree() in __alloc_disk_node()
  - From: Christoph Hellwig
- [PATCH v2] block: genhd: fix double kfree() in __alloc_disk_node()
  - From: Tetsuo Handa