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authorGuo Ren <ren_guo@c-sky.com>2019-01-24 22:16:31 +0800
committerGuo Ren <ren_guo@c-sky.com>2019-02-13 09:48:14 +0800
commit9216cd7231c12a8c391bb2c904d13695398d3453 (patch)
treee3cde6584c453732a093d055134f6f21c8f1ff6e
parent62eebea655d4be5a20fd563abfd7656724cdcd00 (diff)
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>
-rw-r--r--arch/csky/kernel/ptrace.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c
index 57f1afe19a52..f2f12fff36f7 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,