linux-kernel - RE: kernel BUG at mm/zswap.c:1275! (rc6

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Date:   Fri, 12 Feb 2021 08:40:09 +0000
From:   "Song Bao Hua (Barry Song)" <song.bao.hua@...ilicon.com>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>
CC:     Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
        "sjenning@...ux.vnet.ibm.com" <sjenning@...ux.vnet.ibm.com>,
        "Linux List Kernel Mailing" <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: RE: kernel BUG at mm/zswap.c:1275! (rc6 - git 61556703b610)



> -----Original Message-----
> From: Oleksandr Natalenko [mailto:oleksandr@...alenko.name]
> Sent: Friday, February 12, 2021 8:43 PM
> To: Song Bao Hua (Barry Song) <song.bao.hua@...ilicon.com>
> Cc: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>;
> sjenning@...ux.vnet.ibm.com; Linux List Kernel Mailing
> <linux-kernel@...r.kernel.org>; Linux Memory Management List
> <linux-mm@...ck.org>
> Subject: Re: kernel BUG at mm/zswap.c:1275! (rc6 - git 61556703b610)
> 
> Hello.
> 
> On Thu, Feb 11, 2021 at 10:43:18AM +0000, Song Bao Hua (Barry Song) wrote:
> > Are you using zsmalloc? There is a known bug on the combination
> > of zsmalloc and zswap, fixed by patches of tiantao:
> >
> > mm: set the sleep_mapped to true for zbud and z3fold
> > mm/zswap: fix variable 'entry' is uninitialized when used
> > mm/zswap: fix potential memory leak
> > mm/zswap: add the flag can_sleep_mapped
> >
> > at Linux-next:
> >
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/?q
> t=author&q=tiantao6%40hisilicon.com
> 
> Is this a future stable-5.11 material (and/or, potentially, older stable
> branches
> as well)?

I would believe this should be put into 5.11. I will ask Andrew.

> 
> --
>   Oleksandr Natalenko (post-factum)

Thanks
Barry