The quilt patch titled Subject: mm: disable CONFIG_PER_VMA_LOCK until its fixed has been removed from the -mm tree. Its filename was mm-disable-config_per_vma_lock-until-its-fixed.patch
This patch was dropped because it is obsolete
------------------------------------------------------ From: Suren Baghdasaryan surenb@google.com Subject: mm: disable CONFIG_PER_VMA_LOCK until its fixed Date: Wed, 5 Jul 2023 18:14:00 -0700
A memory corruption was reported in [1] with bisection pointing to the patch [2] enabling per-VMA locks for x86. Disable per-VMA locks config to prevent this issue until the fix is confirmed. This is expected to be a temporary measure.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=217624 [2] https://lore.kernel.org/all/20230227173632.3292573-30-surenb@google.com
Link: https://lkml.kernel.org/r/20230706011400.2949242-3-surenb@google.com Reported-by: Jiri Slaby jirislaby@kernel.org Closes: https://lore.kernel.org/all/dbdef34c-3a07-5951-e1ae-e9c6e3cdf51b@kernel.org/ Reported-by: Jacob Young jacobly.alt@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624 Fixes: 0bff0aaea03e ("x86/mm: try VMA lock-based page fault handling first") Signed-off-by: Suren Baghdasaryan surenb@google.com Cc: David Hildenbrand david@redhat.com Cc: Holger Hoffst��tte holger@applied-asynchrony.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/Kconfig~mm-disable-config_per_vma_lock-until-its-fixed +++ a/mm/Kconfig @@ -1224,8 +1224,9 @@ config ARCH_SUPPORTS_PER_VMA_LOCK def_bool n
config PER_VMA_LOCK - def_bool y + bool "Enable per-vma locking during page fault handling." depends on ARCH_SUPPORTS_PER_VMA_LOCK && MMU && SMP + depends on BROKEN help Allow per-vma locking during page fault handling.
_
Patches currently in -mm which might be from surenb@google.com are
mm-lock-a-vma-before-stack-expansion.patch mm-lock-newly-mapped-vma-which-can-be-modified-after-it-becomes-visible.patch swap-remove-remnants-of-polling-from-read_swap_cache_async.patch mm-add-missing-vm_fault_result_trace-name-for-vm_fault_completed.patch mm-drop-per-vma-lock-when-returning-vm_fault_retry-or-vm_fault_completed.patch mm-change-folio_lock_or_retry-to-use-vm_fault-directly.patch mm-handle-swap-page-faults-under-per-vma-lock.patch mm-handle-userfaults-under-vma-lock.patch