From 3bbd2343734e44de92238eea1a5cd3ad32a6baf0 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Wed, 21 Aug 2019 10:20:51 +0000 Subject: [PATCH] powerpc/8xx: set STACK_END_MAGIC earlier on the init_stack Today, the STACK_END_MAGIC is set on init_stack in start_kernel(). To avoid a false 'Thread overran stack, or stack corrupted' message on early Oopses, setup STACK_END_MAGIC as soon as possible. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/54f67bb7ac486c1350f2fa8905cd279f94b9dfb1.1566382841.git.christophe.leroy@c-s.fr --- arch/powerpc/kernel/head_8xx.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 5db461db63cc..19f583e18402 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -15,6 +15,7 @@ */ #include +#include #include #include #include @@ -717,6 +718,9 @@ start_here: /* stack */ lis r1,init_thread_union@ha addi r1,r1,init_thread_union@l + lis r0, STACK_END_MAGIC@h + ori r0, r0, STACK_END_MAGIC@l + stw r0, 0(r1) li r0,0 stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1) -- 2.30.2