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Message-ID: <4934093b-86c0-4889-a5e9-0f9d63fd528c@web.de>
Date: Wed, 17 Jan 2024 22:24:01 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Kunwu Chan <chentao@...inos.cn>, linux-scsi@...r.kernel.org,
kernel-janitors@...r.kernel.org, "James E. J. Bottomley"
<jejb@...ux.ibm.com>, "Manoj N. Kumar" <manoj@...ux.ibm.com>,
"Matthew R. Ochs" <mrochs@...ux.ibm.com>,
Uma Krishnan <ukrishn@...ux.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Kunwu Chan <kunwu.chan@...mail.com>
Subject: Re: [PATCH] scsi: cxlflash: Fix null pointer dereference in
ocxlflash_get_fd
> kasprintf() returns a pointer to dynamically allocated memory
> which can be NULL upon failure.
…
> +++ b/drivers/scsi/cxlflash/ocxl_hw.c
> @@ -1231,6 +1231,11 @@ static struct file *ocxlflash_get_fd(void *ctx_cookie,
> fops = (struct file_operations *)&ocxl_afu_fops;
>
> name = kasprintf(GFP_KERNEL, "ocxlflash:%d", ctx->pe);
> + if (!name) {
> + rc = -ENOMEM;
> + dev_err(dev, "%s: kasprintf allocation failed\n", __func__);
> + goto err2;
> + }
…
How do you think about to omit the extra error message?
Regards,
Markus
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