linux-kernel - Re: [PATCH v3 0/3] ovl: Fix null ptr dereference at realinode in rcu-walk

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Date:   Tue, 16 May 2023 17:42:33 +0200
From:   Christian Brauner <brauner@...nel.org>
To:     Zhihao Cheng <chengzhihao1@...wei.com>
Cc:     miklos@...redi.hu, amir73il@...il.com,
        linux-unionfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/3] ovl: Fix null ptr dereference at realinode in
 rcu-walk

On Tue, May 16, 2023 at 10:16:16PM +0800, Zhihao Cheng wrote:
> v1->v2:
>   Extract a helper to get realpath and real inode from ovl inode.
>   Get realinode from realpath in do_ovl_get_acl().
> v2->v3:
>   Modify original helper ovl_i_path_real() to return the realinode.
> 
> Zhihao Cheng (3):
>   ovl: Let helper ovl_i_path_real() return the realinode
>   ovl: ovl_permission: Fix null pointer dereference at realinode in
>     rcu-walk mode
>   ovl: get_acl: Fix null pointer dereference at realinode in rcu-walk
>     mode
> 
>  fs/overlayfs/inode.c     | 17 ++++++++---------
>  fs/overlayfs/overlayfs.h |  2 +-
>  fs/overlayfs/util.c      |  7 ++++---
>  3 files changed, 13 insertions(+), 13 deletions(-)

Looks good to me,
Reviewed-by: Christian Brauner <brauner@...nel.org>