From: Huang Pei <huangpei@loongson.cn>
Date: Fri, 29 Jan 2021 04:35:07 +0000 (+0800)
Subject: MIPS: fix kernel_stack_pointer()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a78ddac1bc22bd7a47fbec06c9c4ef4312ba71cf;p=linux.git

MIPS: fix kernel_stack_pointer()

MIPS always save kernel stack pointer in regs[29]

Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 1e76774b36ddf..daf3cf244ea97 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -53,7 +53,7 @@ struct pt_regs {
 
 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
 {
-	return regs->regs[31];
+	return regs->regs[29];
 }
 
 static inline void instruction_pointer_set(struct pt_regs *regs,