lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 15 Jul 2019 13:02:09 +0200
From:   Joerg Roedel <>
To:     Dave Hansen <>,
        Andy Lutomirski <>,
        Peter Zijlstra <>,
        Thomas Gleixner <>,
        Ingo Molnar <>, Borislav Petkov <>
Cc:     Andrew Morton <>,,,
        Joerg Roedel <>
Subject: [PATCH 0/3] Sync unmappings in vmalloc/ioremap areas


here is a small patch-set to sync unmappings in the
vmalloc/ioremap areas between page-tables in the system.

This is only needed x86-32 with !SHARED_KERNEL_PMD, which is
the case on a PAE kernel with PTI enabled.

On affected systems the missing sync causes old mappings to
persist in some page-tables, causing data corruption and
other undefined behavior.

Please review.



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

 arch/x86/mm/fault.c | 9 +++++----
 mm/vmalloc.c        | 2 ++
 2 files changed, 7 insertions(+), 4 deletions(-)


Powered by blists - more mailing lists