From: Jens Axboe <axboe@kernel.dk>
To: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>,
stable@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-block@vger.kernel.org,
Lars Ellenberg <lars.ellenberg@linbit.com>,
Tuo Li <islituo@gmail.com>,
drbd-dev@lists.linbit.com
Subject: Re: [PATCH] drbd: fix null-pointer dereference on local read error
Date: Fri, 20 Feb 2026 07:09:21 -0700 [thread overview]
Message-ID: <177159656185.567740.9381187974299808709.b4-ty@kernel.dk> (raw)
In-Reply-To: <20260220113937.2691322-1-christoph.boehmwalder@linbit.com>
On Fri, 20 Feb 2026 12:39:37 +0100, Christoph Böhmwalder wrote:
> In drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to
> __req_mod() with a NULL peer_device:
>
> __req_mod(req, what, NULL, &m);
>
> The READ_COMPLETED_WITH_ERROR handler then unconditionally passes this
> NULL peer_device to drbd_set_out_of_sync(), which dereferences it,
> causing a null-pointer dereference.
>
> [...]
Applied, thanks!
[1/1] drbd: fix null-pointer dereference on local read error
commit: 0d195d3b205ca90db30d70d09d7bb6909aac178f
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2026-02-20 14:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-20 11:39 [PATCH] drbd: fix null-pointer dereference on local read error Christoph Böhmwalder
2026-02-20 14:09 ` Jens Axboe [this message]
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