1 files changed, 10 insertions, 6 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 2a99027312a6..e6474f7272ec 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -537,7 +537,7 @@ int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst
                 int this_len, retval;
 
                 this_len = (len > sizeof(buf)) ? sizeof(buf) : len;
-                retval = access_process_vm(tsk, src, buf, this_len, 0);
+                retval = access_process_vm(tsk, src, buf, this_len, FOLL_FORCE);
                 if (!retval) {
                         if (copied)
                                 break;
@@ -564,7 +564,8 @@ int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long ds
                 this_len = (len > sizeof(buf)) ? sizeof(buf) : len;
                 if (copy_from_user(buf, src, this_len))
                         return -EFAULT;
-                retval = access_process_vm(tsk, dst, buf, this_len, 1);
+                retval = access_process_vm(tsk, dst, buf, this_len,
+                                FOLL_FORCE | FOLL_WRITE);
                 if (!retval) {
                         if (copied)
                                 break;
@@ -1127,7 +1128,7 @@ int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr,
         unsigned long tmp;
         int copied;
 
-        copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), 0);
+        copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), FOLL_FORCE);
         if (copied != sizeof(tmp))
                 return -EIO;
         return put_user(tmp, (unsigned long __user *)data);
@@ -1138,7 +1139,8 @@ int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr,
 {
         int copied;
 
-        copied = access_process_vm(tsk, addr, &data, sizeof(data), 1);
+        copied = access_process_vm(tsk, addr, &data, sizeof(data),
+                        FOLL_FORCE | FOLL_WRITE);
         return (copied == sizeof(data)) ? 0 : -EIO;
 }
 
@@ -1155,7 +1157,8 @@ int compat_ptrace_request(struct task_struct *child, compat_long_t request,
         switch (request) {
         case PTRACE_PEEKTEXT:
         case PTRACE_PEEKDATA:
-                ret = access_process_vm(child, addr, &word, sizeof(word), 0);
+                ret = access_process_vm(child, addr, &word, sizeof(word),
+                                FOLL_FORCE);
                 if (ret != sizeof(word))
                         ret = -EIO;
                 else
@@ -1164,7 +1167,8 @@ int compat_ptrace_request(struct task_struct *child, compat_long_t request,
 
         case PTRACE_POKETEXT:
         case PTRACE_POKEDATA:
-                ret = access_process_vm(child, addr, &data, sizeof(data), 1);
+                ret = access_process_vm(child, addr, &data, sizeof(data),
+                                FOLL_FORCE | FOLL_WRITE);
                 ret = (ret != sizeof(data) ? -EIO : 0);
                 break;