mm: disable CONFIG_PER_VMA_LOCK until its fixed

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 while the problem is being investigated. This is expected to be a temporary measure. [1] https://bugzilla.kernel.org/show_bug.cgi?id=217624 [2] https://lore.kernel.org/all/[email protected] Reported-by: Jiri Slaby <[email protected]> Closes: https://lore.kernel.org/all/[email protected]/ Reported-by: Jacob Young <[email protected]> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624 Fixes: 0bff0aa ("x86/mm: try VMA lock-based page fault handling first") Cc: [email protected] Signed-off-by: Suren Baghdasaryan <[email protected]>
herrnst · Sep 7, 2023 · 7c256bf · 7c256bf
1 parent e5bd6e5
commit 7c256bf
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/mm/Kconfig b/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.