CVSROOT:        /cvs
Module name:    src
Changes by:     [email protected]        2019/01/10 13:26:34

Modified files:
        sys/uvm        : uvm_glue.c 

Log message:
Hold a read lock on the map while doing the actual device I/O during in
physio(9) to prevent another thread from unmapping the memory and triggering
an assertion or even corruption random physical memory pages.

ok deraadt@

Should fix:
Reported-by: [email protected]
Reported-by: [email protected]

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