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Re: port-pmax/55610 (pmax testbed panics with "address error")

Likely caused by corruption fixed by

Module Name:    src
Committed By:    uwe
Date:        Sat Dec 12 18:35:59 UTC 2020

Modified Files:
    src/sys/kern: vfs_cache.c

Log Message:
vfs_cache - do not write outside allocated memory.

In cache_cpu_init allocate struct nchcpu, not struct nchstats_percpu.
cache_update_stats expects the former (that contains two percpu
structs).  Stat updates where smashing whatever was in the next pool

Reported by martin@ as crashes in ptyfs on Krups.

To generate a diff of this commit:
cvs rdiff -u -r1.147 -r1.148 src/sys/kern/vfs_cache.c

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