X-Git-Url: http://git.onelab.eu/?p=procprotect.git;a=blobdiff_plain;f=procprotect.c;h=950be09c8fe2a705c27a4a341c9ad1f7fee7f77e;hp=2e8cd13c75ab91a90d117e8d0ca4bd33a9121693;hb=c6f6343ea39d7cf825e4a1459330ef7ee5d4b6be;hpb=32ba0046e174ed5c2a4a9fba05394ed7a2f21109

diff --git a/procprotect.c b/procprotect.c
index 2e8cd13..950be09 100644
--- a/procprotect.c
+++ b/procprotect.c
@@ -157,8 +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 */