linux-kernel - RE: 5.1 and 5.1.1: BUG: unable to handle kernel paging request at ffffea0002030000

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Date:   Sun, 12 May 2019 04:34:55 -0400
From:   "Justin Piszcz" <jpiszcz@...idpixels.com>
To:     "'LKML'" <linux-kernel@...r.kernel.org>
Subject: RE: 5.1 and 5.1.1: BUG: unable to handle kernel paging request at ffffea0002030000



> -----Original Message-----
> From: Justin Piszcz [mailto:jpiszcz@...idpixels.com]
> Sent: Sunday, May 12, 2019 4:28 AM
> To: LKML
> Subject: 5.1 and 5.1.1: BUG: unable to handle kernel paging request at
> ffffea0002030000
> 
> Hello,
> 
> I've turned off zram/zswap and I am still seeing the following during
> periods of heavy I/O, I am returning to 5.0.xx in the meantime.
> 
> Kernel: 5.1.1
> Arch: x86_64
> Dist: Debian x86_64

[ .. ]

Reverting back to linux-5.0.15, will see if it recurs (I've never seen this before moving to 5.1.x)

$ diff -u linux-5.1.1/mm/compaction.c linux-5.0.15/mm/compaction.c | wc -l
1628