automatic update

1 files changed, 118 insertions, 0 deletions

diff --git a/disable-per-VMA_v4_1.patch b/disable-per-VMA_v4_1.patch
new file mode 100644
index 000000000000..b8ca1a18b40f
--- /dev/null
+++ b/disable-per-VMA_v4_1.patch
@@ -0,0 +1,118 @@
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+Subject: [PATCH v4 2/2] mm: disable CONFIG_PER_VMA_LOCK until its fixed
+From:   Suren Baghdasaryan <surenb@google.com>
+To:     akpm@linux-foundation.org
+Cc:     jirislaby@kernel.org, jacobly.alt@gmail.com,
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+
+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
+
+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")
+Cc: stable@vger.kernel.org
+Signed-off-by: Suren Baghdasaryan <surenb@google.com>
+---
+ mm/Kconfig | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/mm/Kconfig b/mm/Kconfig
+index 09130434e30d..0abc6c71dd89 100644
+--- 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.
+ 
+-- 
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+