Description: mm, oom_reaper: gather each vma to prevent leaking TLB entry References: Notes: bwh> If I read the fix description correctly, this is caused by an bwh> optimisation on arm64 to defer flushing of TLB entries when a bwh> whole mm is freed (added in 4.4), and the oom-reaper (added in bwh> 4.6) not doing the synchronisation that makes that safe. Bugs: upstream: released (4.15-rc2) [687cb0884a714ff484d038e9190edc874edcf146] 4.9-upstream-stable: released (4.9.68) [ee23ae915fa74956503507c1e55cbb2102f349ec] 3.16-upstream-stable: N/A "Vulnerable code not present" 3.2-upstream-stable: N/A "Vulnerable code not present" sid: released (4.14.7-1) 4.9-stretch-security: released (4.9.80-1) 3.16-jessie-security: N/A "Vulnerable code not present" 3.2-wheezy-security: N/A "Vulnerable code not present"