Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled

To: Markus Gothe <markus.gothe@xxxxxxxxxx>, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>
Subject: Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled
From: David Hildenbrand <david@xxxxxxxxxx>
Date: Mon, 6 May 2024 12:45:50 +0200
Cc: "akpm@xxxxxxxxxxxxxxxxxxxx" <akpm@xxxxxxxxxxxxxxxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>
In-reply-to: <f9665d73-d8d5-4af0-8368-0ea08c33e6f5@genexis.eu>
Organization: Red Hat
References: <baafa694-fcb2-4e92-bb62-ac91fc441728@genexis.eu> <ccdd8027-82b5-4dd1-8758-ba1f32200d23@linux.alibaba.com> <96439935-ce2a-4714-be5d-cdeb8ea0eb41@redhat.com> <f9665d73-d8d5-4af0-8368-0ea08c33e6f5@genexis.eu>
User-agent: Mozilla Thunderbird

On 06.05.24 12:01, Markus Gothe wrote:

Hi David,

Hi!

it is from a vendor SDK for an emedded system using Linux 5.4.55.

The current stable version of 5.4 is 5.4.275 ... can you reproduce onmore recent (unmodified upstream/stable) kernel as well?


If not, I'm afraid we cannot really help and you should contact the vendor!

--
Cheers,

David / dhildenb

References:
- get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled
  - From: Markus Gothe
- Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled
  - From: Baolin Wang
- Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled
  - From: David Hildenbrand
- Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled
  - From: Markus Gothe