Module Name: src
Committed By: martin
Date: Sun Mar 8 11:01:22 UTC 2020
Modified Files:
src/sys/uvm [netbsd-9]: uvm_fault.c
Log Message:
Pull up following revision(s) (requested by chs in ticket #764):
sys/uvm/uvm_fault.c: revision 1.207
fix two bugs reported in
https://syzkaller.appspot.com/bug?id=8840dce484094a926e1ec388ffb83acb2fa291c9
- in uvm_fault_check(), if the map entry is wired, handle the fault the same
way
that we would handle UVM_FAULT_WIRE. faulting on wired mappings is valid
if the mapped object was truncated and then later grown again.
- in uvm_fault_unwire_locked(), we must hold the locks for the vm_map_entry
while calling pmap_extract() in order to avoid races with the mapped object
being truncated while we are unwiring it.
To generate a diff of this commit:
cvs rdiff -u -r1.206.2.1 -r1.206.2.2 src/sys/uvm/uvm_fault.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
