linux-kernel - Re: [PATCH v2] block: fix kobject double initialization in add

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Message-ID: <aJi1-l0ye4Xxv3IH@infradead.org>
Date: Sun, 10 Aug 2025 08:08:42 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Zheng Qixing <zhengqixing@...weicloud.com>
Cc: axboe@...nel.dk, linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org, yukuai3@...wei.com,
	yi.zhang@...wei.com, yangerkun@...wei.com, houtao1@...wei.com,
	zhengqixing@...wei.com, lilingfeng3@...wei.com, nilay@...ux.ibm.com
Subject: Re: [PATCH v2] block: fix kobject double initialization in add_disk

On Fri, Aug 08, 2025 at 01:36:09PM +0800, Zheng Qixing wrote:
> From: Zheng Qixing <zhengqixing@...wei.com>
> 
> Device-mapper can call add_disk() multiple times for the same gendisk
> due to its two-phase creation process (dm create + dm load).

We'll need to fix that, instead of adding complex workarounds in the
block layer for something that should not happen.