ASoC: Minor fixes to DaVinci I2S probe function

[pandora-kernel.git] / kernel / ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 64191fa..0692ab5 100644 (file)
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -188,7 +188,7 @@ int ptrace_attach(struct task_struct *task)
        /* Protect exec's credential calculations against our interference;
         * SUID, SGID and LSM creds get determined differently under ptrace.
         */
-       retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+       retval = mutex_lock_interruptible(&task->cred_exec_mutex);
        if (retval  < 0)
                goto out;
 
@@ -232,7 +232,7 @@ repeat:
 bad:
        write_unlock_irqrestore(&tasklist_lock, flags);
        task_unlock(task);
-       mutex_unlock(&current->cred_exec_mutex);
+       mutex_unlock(&task->cred_exec_mutex);
 out:
        return retval;
 }
@@ -604,10 +604,11 @@ repeat:
                ret = security_ptrace_traceme(current->parent);
 
                /*
-                * Set the ptrace bit in the process ptrace flags.
-                * Then link us on our parent's ptraced list.
+                * Check PF_EXITING to ensure ->real_parent has not passed
+                * exit_ptrace(). Otherwise we don't report the error but
+                * pretend ->real_parent untraces us right after return.
                 */
-               if (!ret) {
+               if (!ret && !(current->real_parent->flags & PF_EXITING)) {
                        current->ptrace |= PT_PTRACED;
                        __ptrace_link(current, current->real_parent);
                }