linux-kernel - [PATCH v2 2/2] Kconfig.debug: Provide a little extra FRAME

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Message-Id: <20221125120750.3537134-3-lee@kernel.org>
Date:   Fri, 25 Nov 2022 12:07:50 +0000
From:   Lee Jones <lee@...nel.org>
To:     lee@...nel.org, arnd@...db.de, akpm@...ux-foundation.org,
        nathan@...nel.org, maarten.lankhorst@...ux.intel.com,
        mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com,
        daniel@...ll.ch, ndesaulniers@...gle.com, trix@...hat.com,
        harry.wentland@....com, sunpeng.li@....com,
        Rodrigo.Siqueira@....com, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH v2 2/2] Kconfig.debug: Provide a little extra FRAME_WARN leeway when KASAN is enabled

When enabled, KASAN enlarges function's stack-frames.  Pushing quite a
few over the current threshold.  This can mainly be seen on 32-bit
architectures where the present limit (when !GCC) is a lowly
1024-Bytes.

Signed-off-by: Lee Jones <lee@...nel.org>
---
 lib/Kconfig.debug | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c3c0b077ade33..82d475168db95 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -399,6 +399,7 @@ config FRAME_WARN
 	default 2048 if GCC_PLUGIN_LATENT_ENTROPY
 	default 2048 if PARISC
 	default 1536 if (!64BIT && XTENSA)
+	default 1280 if KASAN && !64BIT
 	default 1024 if !64BIT
 	default 2048 if 64BIT
 	help
-- 
2.38.1.584.g0f3c55d4c2-goog