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Diffstat (limited to 'arch/x86/kernel/ptrace.c')
-rw-r--r--arch/x86/kernel/ptrace.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 3c5bbe8e4120..066e5b01a7e0 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -42,6 +42,7 @@
#include <asm/traps.h>
#include <asm/syscall.h>
#include <asm/fsgsbase.h>
+#include <asm/io_bitmap.h>
#include "tls.h"
@@ -697,7 +698,9 @@ static int ptrace_set_debugreg(struct task_struct *tsk, int n,
static int ioperm_active(struct task_struct *target,
const struct user_regset *regset)
{
- return target->thread.io_bitmap_max / regset->size;
+ struct io_bitmap *iobm = target->thread.io_bitmap;
+
+ return iobm ? DIV_ROUND_UP(iobm->max, regset->size) : 0;
}
static int ioperm_get(struct task_struct *target,
@@ -705,12 +708,13 @@ static int ioperm_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
- if (!target->thread.io_bitmap_ptr)
+ struct io_bitmap *iobm = target->thread.io_bitmap;
+
+ if (!iobm)
return -ENXIO;
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- target->thread.io_bitmap_ptr,
- 0, IO_BITMAP_BYTES);
+ iobm->bitmap, 0, IO_BITMAP_BYTES);
}
/*