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Increase the default 32-bit build frame size warning limit to 1280 bytes

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That was already the limit with KASAN enabled, and the 32-bit x86 build
ends up having a couple of drm cases that have stack frames _just_ over
1kB on my allmodconfig test.  So the minimal fix for this build issue
for now is to just bump the limit and make it independent of KASAN.

[ Side note: XTENSA already used 1.5k and PARISC uses 2k, so 1280 is
  still relatively conservative ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2025-11-26 12:11:28 -08:00
parent 430c89fe3a
commit 32115734c0
1 changed files with 1 additions and 2 deletions
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3
lib/Kconfig.debug
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@@ -445,8 +445,7 @@ 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 1280 if !64BIT
default 2048 if 64BIT
help
Tell the compiler to warn at build time for stack frames larger than this.