From edbadaf0671072298e506074128b64e003c5812c Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Wed, 8 Apr 2020 15:58:49 +0000 Subject: [PATCH] powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT 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") Reported-by: Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://bugzilla.kernel.org/show_bug.cgi?id=207129 Link: https://lore.kernel.org/r/2c50f3b1c9bbaa4217c9a98f3044bd2a36c46a4f.1586361277.git.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 8324d98728db..30e2111ca15d 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -772,6 +772,7 @@ 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