[PATCH v5.15 1/1] Kconfig.debug: provide a little extra FRAME_WARN leeway when KASAN is enabled

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commit 152fe65f300e1819d59b80477d3e0999b4d5d7d2 upstream.

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.

Link: https://lkml.kernel.org/r/20221125120750.3537134-3-lee@xxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxxx>
Cc: Harry Wentland <harry.wentland@xxxxxxx>
Cc: Leo Li <sunpeng.li@xxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Maxime Ripard <mripard@xxxxxxxxxx>
Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: "Pan, Xinhui" <Xinhui.Pan@xxxxxxx>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Tom Rix <trix@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
[Lee: Back-ported to linux-5.15.y]
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
---
 lib/Kconfig.debug | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1699b21245586..cfbadc7c919d8 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -353,6 +353,7 @@ config FRAME_WARN
 	range 0 8192
 	default 2048 if GCC_PLUGIN_LATENT_ENTROPY
 	default 1536 if (!64BIT && (PARISC || XTENSA))
+	default 1280 if KASAN && !64BIT
 	default 1024 if (!64BIT && !PARISC)
 	default 2048 if 64BIT
 	help
-- 
2.39.0.rc0.267.gcb52ba06e7-goog




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