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Message-ID: <TYCP286MB118803910D5797B4B1B1938D8A839@TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM>
Date:   Mon, 25 Oct 2021 15:22:11 +0000
From:   YE Chengfeng <cyeaa@...nect.ust.hk>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "john.garry@...wei.com" <john.garry@...wei.com>
Subject: driver/bug: suspected missing null check in hisi_lpc.c

Hi,

https://github.com/torvalds/linux/blob/master/drivers/bus/hisi_lpc.c#L483

Our experimental static analysis tool detects a null-ptr-reference problem. It could be false positive, we report this to you just in case.

Null check is missing for the return pointer of ACPI_COMPANION at line 483 and line 504. It seems that there could be potential null-ptr-dereference problem at line 488 and line 509. Could you spare some time to have a look at it?

Thanks so much,
Chengfeng

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