[PATCH 0/3 4.19-stable] Sync mappings in vmalloc/ioremap areas

[Joerg Roedel]

From: Joerg Roedel <jroedel@xxxxxxx>

Backport commits from upstream to fix a data corruption
issue that gets exposed when using PTI on x86-32.

Please consider them for inclusion into stable-4.19.

Joerg Roedel (3):
  x86/mm: Check for pfn instead of page in vmalloc_sync_one()
  x86/mm: Sync also unmappings in vmalloc_sync_all()
  mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()

 arch/x86/mm/fault.c | 15 ++++++---------
 mm/vmalloc.c        |  9 +++++++++
 2 files changed, 15 insertions(+), 9 deletions(-)

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2.16.4