Re: [REGRESSION] Null pointer dereference while shrinking zswap

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To: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: Re: [REGRESSION] Null pointer dereference while shrinking zswap
From: Christian Heusel <christian@xxxxxxxxx>
Date: Wed, 17 Apr 2024 19:18:14 +0200
Cc: Chengming Zhou <chengming.zhou@xxxxxxxxx>, Nhat Pham <nphamcs@xxxxxxxxx>, Seth Jennings <sjenning@xxxxxxxxxx>, Dan Streetman <ddstreet@xxxxxxxx>, Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, David Runge <dave@xxxxxxxxxxx>, "Richard W.M. Jones" <rjones@xxxxxxxxxx>, Mark W <instruform@xxxxxxxxx>, regressions@xxxxxxxxxxxxxxx, Yosry Ahmed <yosryahmed@xxxxxxxxxx>
In-reply-to: <20240417143324.GA1055428@cmpxchg.org>
References: <3iccc6vjl5gminut3lvpl4va2lbnsgku5ei2d7ylftoofy3n2v@gcfdvtsq6dx2> <CAKEwX=MZ3jTVpN4g-qrhTn2b0i0C6_M=8BtKt9KEPyFHb+4W2w@mail.gmail.com> <CAKEwX=NM1y-K1-Yw=CH3cM-8odER1PZBVoWo-rs7_OdjFG_puw@mail.gmail.com> <CAKEwX=MWPUf1NMGdn+1AkRdOUf25ifAbPyoP9zppPTx3U3Tv2Q@mail.gmail.com> <246c1f4d-af13-40fa-b968-fbaf36b8f91f@linux.dev> <20240417143324.GA1055428@cmpxchg.org>
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On 24/04/17 10:33AM, Johannes Weiner wrote:
>
> Christian, can you please test the below patch on top of current
> upstream?
>

Hey Johannes,

I have applied your patch on top of 6.9-rc4 and it did solve the crash for
me, thanks for hacking together a fix so quickly! 🤗

Tested-By: Christian Heusel <christian@xxxxxxxxx>

Cheers,
Christian

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Follow-Ups:
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
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References:
- [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Christian Heusel
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Nhat Pham
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Nhat Pham
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Nhat Pham
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Chengming Zhou
- Re: [REGRESSION] Null pointer dereference while shrinking zswap
  - From: Johannes Weiner

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