linux-kernel - Re: [PATCH] scsi: esas2r: prevent a potential NULL dereference in esas2r

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Message-ID: <5F620166.7070305@huawei.com>
Date:   Wed, 16 Sep 2020 20:13:26 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
CC:     <linuxdrivers@...otech.com>, <jejb@...ux.ibm.com>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] scsi: esas2r: prevent a potential NULL dereference in
 esas2r_probe()



On 2020/9/16 5:44, Martin K. Petersen wrote:
>
> Jing,
>
>> esas2r_probe() calls scsi_host_put() in an error path. However,
>> esas2r_log_dev() may hit a potential NULL dereference. So use NUll instead.
>
> Wouldn't it be better to move the scsi_host_put() call after the error
> message?

There is already a message before the scsi_host_put() call. It is used 
to record calling function.

>