X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Fkcmp.c;h=3a47fa998fe07277c592f62de36f59dad0d09f8b;hb=1616bc22bdc75b9ceefa06fa133949fd6bcd1c3f;hp=0aa69ea1d8fdcfa68046aa75b03c4373783a02fa;hpb=801c2bd37821e66de100e8f4a0729d9242fb34c7;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/kcmp.c b/kernel/kcmp.c
index 0aa69ea1d8fd..3a47fa998fe0 100644
--- a/kernel/kcmp.c
+++ b/kernel/kcmp.c
@@ -122,8 +122,8 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
 			&task2->signal->cred_guard_mutex);
 	if (ret)
 		goto err;
-	if (!ptrace_may_access(task1, PTRACE_MODE_READ) ||
-	    !ptrace_may_access(task2, PTRACE_MODE_READ)) {
+	if (!ptrace_may_access(task1, PTRACE_MODE_READ_REALCREDS) ||
+	    !ptrace_may_access(task2, PTRACE_MODE_READ_REALCREDS)) {
 		ret = -EPERM;
 		goto err_unlock;
 	}