Re: kswapd0: page allocation failure: order:0, mode:0x820(GFP_ATOMIC), nodemask=(null),cpuset=/,mems_allowed=0 (Kernel v6.5.9, 32bit ppc)
From: Erhard Furtner
Date: Sun Jun 02 2024 - 17:37:25 EST
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- In reply to: Yu Zhao: "Re: kswapd0: page allocation failure: order:0, mode:0x820(GFP_ATOMIC), nodemask=(null),cpuset=/,mems_allowed=0 (Kernel v6.5.9, 32bit ppc)"
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On Sun, 2 Jun 2024 14:38:18 -0600
Yu Zhao <yuzhao@xxxxxxxxxx> wrote:
> I compared the .config between v6.8.9 (you attached previously) and
> v6.1.92 -- I didn't see any major differences (both have ZONE_DMA,
> HIGHMEM, MGLRU and zswap/zsmalloc). Either there is something broken
> between v6.1.92 and v6.6.32 (as you mentioned above), or it's just a
> kernel allocation bloat which puts the DMA zone (0.25GB) under too
> heavy pressure. The latter isn't uncommon when upgrading to a newer
> version of the kernel.
>
> Could you please attach the dmesg from v6.1.92? I want to compare the
> dmegs between the two kernel versions as well -- that might provide
> some hints.
No problem, attached please find the v6.1.92 dmesg and also the v6.9.3 .config and dmesg.
I stripped down the v6.9.3 .config a bit (to ease 'make oldconfig' for older kernels) from my originally posted v6.8.9 .config and used that as a starting point for v6.6.32 and v6.1.92.
Also I started a git bisect. Let's see if I get something meaningful out of this...
Regards,
Erhard
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