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From:   Lizhi Xu <lizhi.xu@windriver.com>
To:     <lkp@intel.com>
CC:     <davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
        <linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <lizhi.xu@windriver.com>, <mani@kernel.org>,
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        <pabeni@redhat.com>,
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        <syzkaller-bugs@googlegroups.com>
Subject: Re: [PATCH] radix-tree: fix memory leak in radix_tree_insert
Date:   Wed, 13 Dec 2023 11:25:04 +0800
Message-ID: <20231213032504.2133661-1-lizhi.xu@windriver.com>
In-Reply-To: <202312120651.92GGXeX4-lkp@intel.com>
References: <202312120651.92GGXeX4-lkp@intel.com>
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On Tue, 12 Dec 2023 07:16:50 +0800, kernel test robot <lkp@intel.com> wrote:
> kernel test robot noticed the following build warnings:
>    lib/radix-tree.c:558:24: sparse:     got struct xa_node [noderef] __rcu *parent
> >> lib/radix-tree.c:653:28: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct xa_node *pn @@     got struct xa_node [noderef] __rcu *parent @@
>    lib/radix-tree.c:653:28: sparse:     expected struct xa_node *pn
>   651			struct radix_tree_node *pn;
>   652			while (shift < mmshift && node) {
> > 653				pn = node->parent;
It can be clarified here that node->parent is the type just alloced as 
"struct radix_tree node *", so there is no need to use cast type conversion,  
Please ignore this warning.

BR,
Lizhi