commit 51b3960e78575f96c989d08421596bb6ab569f44
author Linus Torvalds <torvalds@linux-foundation.org> Mon Apr 27 08:38:51 2009 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Mon Apr 27 08:38:51 2009 -0700
tree fa6ec27c8fb2a2f9cfd278193a01a6b51d1a77b5
parent f70616acacd956aaa819fd2e3a0d0152f1bc812b
parent cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  ptrace: ptrace_attach: fix the usage of ->cred_exec_mutex

kernel/ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index dfcd83c..0692ab5 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -188,7 +188,7 @@
 	/* 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 @@
 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;
 }