[PATCH] Fix SCSI scanning slab corruption

[linux-2.6] / kernel / kprobes.c

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index fde5a16a2913c2675d28c46e37f88b7cc28a82aa..3bb71e63a37e0bfa47217c99b2b5e6dbe0a8f2d5 100644 (file)
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -246,6 +246,19 @@ static int __kprobes aggr_break_handler(struct kprobe *p, struct pt_regs *regs)
        return ret;
 }
 
+/* Walks the list and increments nmissed count for multiprobe case */
+void __kprobes kprobes_inc_nmissed_count(struct kprobe *p)
+{
+       struct kprobe *kp;
+       if (p->pre_handler != aggr_pre_handler) {
+               p->nmissed++;
+       } else {
+               list_for_each_entry_rcu(kp, &p->list, list)
+                       kp->nmissed++;
+       }
+       return;
+}
+
 /* Called with kretprobe_lock held */
 struct kretprobe_instance __kprobes *get_free_rp_inst(struct kretprobe *rp)
 {
@@ -399,10 +412,7 @@ static inline void add_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
        INIT_LIST_HEAD(&ap->list);
        list_add_rcu(&p->list, &ap->list);
 
-       INIT_HLIST_NODE(&ap->hlist);
-       hlist_del_rcu(&p->hlist);
-       hlist_add_head_rcu(&ap->hlist,
-               &kprobe_table[hash_ptr(ap->addr, KPROBE_HASH_BITS)]);
+       hlist_replace_rcu(&p->hlist, &ap->hlist);
 }
 
 /*