Re: [PATCH v3 2/2] mm: disable CONFIG_PER_VMA_LOCK until its fixed

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 05.07.23 19:12, Suren Baghdasaryan wrote:
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/20230227173632.3292573-30-surenb@xxxxxxxxxx

Reported-by: Jiri Slaby <jirislaby@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/dbdef34c-3a07-5951-e1ae-e9c6e3cdf51b@xxxxxxxxxx/
Reported-by: Jacob Young <jacobly.alt@xxxxxxxxx>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624
Fixes: 0bff0aaea03e ("x86/mm: try VMA lock-based page fault handling first")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
---
  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.
Do we have any testing results (that don't reveal other issues :) ) for patch #1? Not sure if we really want to mark it broken if patch #1 fixes the issue.

--
Cheers,

David / dhildenb





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux