1 files changed, 0 insertions, 12 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 42ad8ae729a0..6af9cdd558b7 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -14,7 +14,6 @@
 #include <linux/mm.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
-#include <linux/smp_lock.h>
 #include <linux/ptrace.h>
 #include <linux/security.h>
 #include <linux/signal.h>
@@ -76,7 +75,6 @@ void __ptrace_unlink(struct task_struct *child)
         child->parent = child->real_parent;
         list_del_init(&child->ptrace_entry);
 
-        arch_ptrace_untrace(child);
         if (task_is_traced(child))
                 ptrace_untrace(child);
 }
@@ -666,10 +664,6 @@ SYSCALL_DEFINE4(ptrace, long, request, long, pid, long, addr, long, data)
         struct task_struct *child;
         long ret;
 
-        /*
-         * This lock_kernel fixes a subtle race with suid exec
-         */
-        lock_kernel();
         if (request == PTRACE_TRACEME) {
                 ret = ptrace_traceme();
                 if (!ret)
@@ -703,7 +697,6 @@ SYSCALL_DEFINE4(ptrace, long, request, long, pid, long, addr, long, data)
  out_put_task_struct:
         put_task_struct(child);
  out:
-        unlock_kernel();
         return ret;
 }
 
@@ -813,10 +806,6 @@ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
         struct task_struct *child;
         long ret;
 
-        /*
-         * This lock_kernel fixes a subtle race with suid exec
-         */
-        lock_kernel();
         if (request == PTRACE_TRACEME) {
                 ret = ptrace_traceme();
                 goto out;
@@ -846,7 +835,6 @@ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
  out_put_task_struct:
         put_task_struct(child);
  out:
-        unlock_kernel();
         return ret;
 }
 #endif  /* CONFIG_COMPAT */