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SubjectRe: [PATCH] MIPS: pgalloc: fix memory leak caused by pgd_free()
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Hi there,

This fix should backported.  Effectively, all mips64-based Cavium Octeon
processors have been broken since the original commit; this has been a
persistent and surreptitious issue for the OpenWrt community since
nearly a year ago (referencing
https://forum.openwrt.org/t/upstream-kernel-memleak-5-10-octeon-ethernet-ko/111827/),
and nearly ended with OpenWrt marking the target as entirely unsupported
and moving on.

We understand that there are ultimately few users of mips64, but it's
really important that our memory management work. While OpenWrt can
backport until upstream inclusion, I am sure there are other users and
software platforms unaware of this fix (and unable to take advantage of
it), thus making those platforms on this arch completely unusable.

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