linux-kernel - [PATCH 4.17 209/220] kasan: depend on CONFIG_SLUB

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Date:   Sun,  1 Jul 2018 18:23:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Jason A. Donenfeld" <Jason@...c4.com>,
        Michal Hocko <mhocko@...e.com>,
        Shakeel Butt <shakeelb@...gle.com>,
        Christoph Lameter <cl@...ux.com>,
        David Rientjes <rientjes@...gle.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.17 209/220] kasan: depend on CONFIG_SLUB_DEBUG

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jason A. Donenfeld <Jason@...c4.com>

commit dd275caf4a0d9b219fffe49288b6cc33cd564312 upstream.

KASAN depends on having access to some of the accounting that SLUB_DEBUG
does; without it, there are immediate crashes [1].  So, the natural
thing to do is to make KASAN select SLUB_DEBUG.

[1] http://lkml.kernel.org/r/CAHmME9rtoPwxUSnktxzKso14iuVCWT7BE_-_8PAC=pGw1iJnQg@mail.gmail.com

Link: http://lkml.kernel.org/r/20180622154623.25388-1-Jason@zx2c4.com
Fixes: f9e13c0a5a33 ("slab, slub: skip unnecessary kasan_cache_shutdown()")
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Acked-by: Michal Hocko <mhocko@...e.com>
Reviewed-by: Shakeel Butt <shakeelb@...gle.com>
Acked-by: Christoph Lameter <cl@...ux.com>
Cc: Shakeel Butt <shakeelb@...gle.com>
Cc: David Rientjes <rientjes@...gle.com>
Cc: Pekka Enberg <penberg@...nel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc: <stable@...r.kernel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 lib/Kconfig.kasan |    1 +
 1 file changed, 1 insertion(+)

--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -6,6 +6,7 @@ if HAVE_ARCH_KASAN
 config KASAN
 	bool "KASan: runtime memory debugger"
 	depends on SLUB || (SLAB && !DEBUG_SLAB)
+	select SLUB_DEBUG if SLUB
 	select CONSTRUCTORS
 	select STACKDEPOT
 	help