Re: [BUG] page allocation failure reading procfs ipv6 configuration files with cgroups

On Sat, Feb 20, 2021 at 12:36 PM Matthew Wilcox [off-list ref] wrote:

On Sat, Feb 20, 2021 at 12:29:18PM -0500, Peter Geis wrote:

quoted

Good Afternoon,

I have been tracking down a regular bug that triggers when running OpenWRT in a lxd container.
Every ten minutes I was greeted with the following splat in the kernel log:

[2122311.383389] warn_alloc: 3 callbacks suppressed
[2122311.383403] cat: page allocation failure: order:5, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=lxc.payload.openwrt,mems_allowed=0

You want this patch:

https://lore.kernel.org/linux-fsdevel/6345270a2c1160b89dd5e6715461f388176899d1.1612972413.git.josef-DigfWCa+lFGyeJad7bwFQA@public.gmane.org/

I've tested this patch against 5.10.17 for 36 hours and can confirm it
solves the problem.
Thank you.