kprobes: Fix selftest to clear flags field for reusing probes

Fix selftest to clear flags field for reusing probes
because the flags field can be modified by Kprobes.
This also set NULL to kprobe.addr instead of 0.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
LKML-Reference: <20101014031024.4100.50107.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/test_kprobes.c b/kernel/test_kprobes.c
index 4f10451..f8b11a2 100644 (file)
--- a/kernel/test_kprobes.c
+++ b/kernel/test_kprobes.c
@@ -115,7 +115,9 @@ static int test_kprobes(void)
        int ret;
        struct kprobe *kps[2] = {&kp, &kp2};
 
-       kp.addr = 0; /* addr should be cleard for reusing kprobe. */
+       /* addr and flags should be cleard for reusing kprobe. */
+       kp.addr = NULL;
+       kp.flags = 0;
        ret = register_kprobes(kps, 2);
        if (ret < 0) {
                printk(KERN_ERR "Kprobe smoke test failed: "
@@ -210,7 +212,9 @@ static int test_jprobes(void)
        int ret;
        struct jprobe *jps[2] = {&jp, &jp2};
 
-       jp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */
+       /* addr and flags should be cleard for reusing kprobe. */
+       jp.kp.addr = NULL;
+       jp.kp.flags = 0;
        ret = register_jprobes(jps, 2);
        if (ret < 0) {
                printk(KERN_ERR "Kprobe smoke test failed: "
@@ -323,7 +327,9 @@ static int test_kretprobes(void)
        int ret;
        struct kretprobe *rps[2] = {&rp, &rp2};
 
-       rp.kp.addr = 0; /* addr should be cleard for reusing kprobe. */
+       /* addr and flags should be cleard for reusing kprobe. */
+       rp.kp.addr = NULL;
+       rp.kp.flags = 0;
        ret = register_kretprobes(rps, 2);
        if (ret < 0) {
                printk(KERN_ERR "Kprobe smoke test failed: "