From 9216cd7231c12a8c391bb2c904d13695398d3453 Mon Sep 17 00:00:00 2001
From: Guo Ren <ren_guo@c-sky.com>
Date: Thu, 24 Jan 2019 22:16:31 +0800
Subject: [PATCH] csky: Fixup wrong pt_regs size
The bug is from commit 2054f4af1957 ("csky: bugfix gdb coredump error.")
We change the ELF_NGREG to ELF_NGREG - 2 to fit gdb&gcc define, but forgot
modify ptrace regset.
Now coredump use ELF_NRGEG to parse GPRs and ptrace use pt_regs_regset, so
there are two different reg_sets for userspace.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
arch/csky/kernel/ptrace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c
index 57f1afe19a52c..f2f12fff36f70 100644
--- a/arch/csky/kernel/ptrace.c
+++ b/arch/csky/kernel/ptrace.c
@@ -8,6 +8,7 @@
#include <linux/ptrace.h>
#include <linux/regset.h>
#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
#include <linux/signal.h>
#include <linux/smp.h>
#include <linux/uaccess.h>
@@ -159,7 +160,7 @@ static int fpr_set(struct task_struct *target,
static const struct user_regset csky_regsets[] = {
[REGSET_GPR] = {
.core_note_type = NT_PRSTATUS,
- .n = ELF_NGREG,
+ .n = sizeof(struct pt_regs) / sizeof(u32),
.size = sizeof(u32),
.align = sizeof(u32),
.get = &gpr_get,