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Subject[PATCH] powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT
Date
When CONFIG_KASAN is selected, the stack usage is increased.

In the same way as x86 and arm64 architectures, increase
THREAD_SHIFT when CONFIG_KASAN is selected.

Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=207129
Reported-by: <erhard_f@mailbox.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 05d20a8d6581..4444511f9bbc 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -771,6 +771,7 @@ config THREAD_SHIFT
range 13 15
default "15" if PPC_256K_PAGES
default "14" if PPC64
+ default "14" if KASAN
default "13"
help
Used to define the stack size. The default is almost always what you
--
2.25.0
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