This issue is already fixed in the Cosmic kernel (which means that "D"
is also fixed). The Bionic kernel needs these patches:
db7ddef301128dad394f1c0f77027f86ee9a4edb ("mm: move tlb_table_flush to
tlb_flush_mmu_free")
a6f572084fbee8b30f91465f4a085d7a90901c57 ("mm/tlb: Remove tlb_remove_table()
non-concurrent condition")
d86564a2f085b79ec046a5cba90188e612352806 ("mm/tlb, x86/mm: Support invalidating
TLB caches for RCU_TABLE_FREE")
Older releases are not affected.
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1798897
Title:
Linux: insufficient shootdown for paging-structure caches
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
In Progress
Status in linux source package in Cosmic:
Fix Released
Status in linux source package in DD-Series:
Fix Released
Bug description:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1633
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1798897/+subscriptions
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