linux-kernel - [PATCH] mm, page_alloc: really disable DEBUG

lists.openwall.net		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 linux-hardening linux-cve-announce 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:   Wed, 19 May 2021 11:28:04 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Akinobu Mita <akinobu.mita@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        David Hildenbrand <david@...hat.com>,
        Michal Hocko <mhocko@...nel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Andrea Righi <andrea.righi@...onical.com>,
        Guilherme Piccoli <gpiccoli@...onical.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: [PATCH] mm, page_alloc: really disable DEBUG_PAGEALLOC with hibernation

The documentation of DEBUG_PAGEALLOC states that it cannot be used with
hibernation, however the Kconfig entry would allow it if
ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC.

Fixes: ee3b4290aec0 ("generic debug pagealloc: build fix")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 mm/Kconfig.debug | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index 1e73717802f8..0ace5b2a9d04 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -11,7 +11,7 @@ config PAGE_EXTENSION
 config DEBUG_PAGEALLOC
 	bool "Debug page memory allocations"
 	depends on DEBUG_KERNEL
-	depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
+	depends on !HIBERNATION && ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
 	select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
 	help
 	  Unmap pages from the kernel linear mapping after free_pages().
-- 
2.27.0