X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=procprotect.c;h=950be09c8fe2a705c27a4a341c9ad1f7fee7f77e;hb=c6f6343ea39d7cf825e4a1459330ef7ee5d4b6be;hp=56910b3271669037bbd446ed6797ec773d8accab;hpb=d53194f4cadff25c88ba781da36daeec563226a0;p=procprotect.git

diff --git a/procprotect.c b/procprotect.c
index 56910b3..950be09 100644
--- a/procprotect.c
+++ b/procprotect.c
@@ -2,6 +2,7 @@
 #include <linux/moduleparam.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
+#include <linux/version.h>
 #include <linux/fs_struct.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
@@ -156,8 +157,12 @@ static int lookup_slow_entry(struct kretprobe_instance *ri, struct pt_regs *regs
 
 static int lookup_slow_ret(struct kretprobe_instance *ri, struct pt_regs *regs)
 {
-    struct procprotect_ctx *ctx = (struct procprotect_ctx *) ri->data;
-    int ret = regs->ax;
+    struct procprotect_ctx *ctx;
+    int ret;
+
+    if (!ri) {/* Race condition?*/ return 0;}
+    ctx = (struct procprotect_ctx *) ri->data;
+    ret = regs->ax;
 
     if (ret==0) {
         /* The kernel is going to honor the request. Here's where we step in */
@@ -288,11 +293,12 @@ int procfile_write(struct file *file, const char *buffer, unsigned long count, v
 
 static int __init procprotect_init(void)
 {
-    printk("Procprotect: starting procprotect version %s with ACLs at path %s.\n",
-            VERSION_STR, aclpath);
     int ret;
     int i;
 
+    printk("Procprotect: starting procprotect version %s with ACLs at path %s.\n",
+            VERSION_STR, aclpath);
+
     for(i=0;i<HASH_SIZE;i++) {
         INIT_HLIST_HEAD(&procprotect_hash[i]);
     }