1 files changed, 11 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 55613e33e263..a6ae1cfad86c 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -933,12 +933,16 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
         if (data && !(data & DABR_TRANSLATION))
                 return -EIO;
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
+        if (ptrace_get_breakpoints(task) < 0)
+                return -ESRCH;
+
         bp = thread->ptrace_bps[0];
         if ((!data) || !(data & (DABR_DATA_WRITE | DABR_DATA_READ))) {
                 if (bp) {
                         unregister_hw_breakpoint(bp);
                         thread->ptrace_bps[0] = NULL;
                 }
+                ptrace_put_breakpoints(task);
                 return 0;
         }
         if (bp) {
@@ -948,9 +952,12 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
                                         (DABR_DATA_WRITE | DABR_DATA_READ),
                                                         &attr.bp_type);
                 ret =  modify_user_hw_breakpoint(bp, &attr);
-                if (ret)
+                if (ret) {
+                        ptrace_put_breakpoints(task);
                         return ret;
+                }
                 thread->ptrace_bps[0] = bp;
+                ptrace_put_breakpoints(task);
                 thread->dabr = data;
                 return 0;
         }
@@ -965,9 +972,12 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
                                                         ptrace_triggered, task);
         if (IS_ERR(bp)) {
                 thread->ptrace_bps[0] = NULL;
+                ptrace_put_breakpoints(task);
                 return PTR_ERR(bp);
         }
 
+        ptrace_put_breakpoints(task);
+
 #endif /* CONFIG_HAVE_HW_BREAKPOINT */
 
         /* Move contents to the DABR register */