linux-kernel - Re: [PATCH 6/7] dm-verity: correctly handle dm_bufio_client

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Message-ID: <20251217175008.GF2944334@google.com>
Date: Wed, 17 Dec 2025 17:50:08 +0000
From: Sami Tolvanen <samitolvanen@...gle.com>
To: Eric Biggers <ebiggers@...nel.org>
Cc: dm-devel@...ts.linux.dev, Alasdair Kergon <agk@...hat.com>,
	Mike Snitzer <snitzer@...nel.org>,
	Mikulas Patocka <mpatocka@...hat.com>,
	Benjamin Marzinski <bmarzins@...hat.com>,
	Eran Messeri <eranm@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] dm-verity: correctly handle dm_bufio_client_create()
 failure

On Tue, Dec 16, 2025 at 03:06:13PM -0800, Eric Biggers wrote:
> If either of the calls to dm_bufio_client_create() in verity_fec_ctr()
> fails, then dm_bufio_client_destroy() is later called with an ERR_PTR()
> argument.  That causes a crash.  Fix this.
> 
> Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
> Signed-off-by: Eric Biggers <ebiggers@...nel.org>

Reviewed-by: Sami Tolvanen <samitolvanen@...gle.com>

Sami