linux-kernel - RE: [PATCH] RDMA/rxe: Fix null pointer dereference in ODP MR check

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Message-ID:
 <OS3PR01MB98653E59736B707B4F7C2636E5AF2@OS3PR01MB9865.jpnprd01.prod.outlook.com>
Date: Wed, 2 Apr 2025 05:11:31 +0000
From: "Daisuke Matsuda (Fujitsu)" <matsuda-daisuke@...itsu.com>
To: "Zhijian Li (Fujitsu)" <lizhijian@...itsu.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"zyjzyj2000@...il.com" <zyjzyj2000@...il.com>, "jgg@...pe.ca" <jgg@...pe.ca>,
	"leon@...nel.org" <leon@...nel.org>, Shin'ichiro Kawasaki
	<shinichiro.kawasaki@....com>, "Zhijian Li (Fujitsu)" <lizhijian@...itsu.com>
Subject: RE: [PATCH] RDMA/rxe: Fix null pointer dereference in ODP MR check

On Wed, April 2, 2025 12:27 PM Li Zhijian wrote:
> 
> The blktests/rnbd reported a null pointer dereference as following.
> Similar to the mxl5, introduce a is_odp_mr() to check if the odp

Typo: mxl5
Can this be amended when merging?

> is enabled in this mr.
> 

Thank you for the fix!
If mr type is other than IB_MR_TYPE_USER, the null pointer dereference can occur
since mr->umem is not set in that case. The fix looks good.

Reviewed-by: Daisuke Matsuda <matsuda-daisuke@...itsu.com>