uretprobes: Limit the depth of return probe nestedness

[cascardo/linux.git] / include / linux / uprobes.h

diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index b0507f2..06f28be 100644 (file)
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -38,6 +38,8 @@ struct inode;
 #define UPROBE_HANDLER_REMOVE          1
 #define UPROBE_HANDLER_MASK            1
 
+#define MAX_URETPROBE_DEPTH            64
+
 enum uprobe_filter_ctx {
        UPROBE_FILTER_REGISTER,
        UPROBE_FILTER_UNREGISTER,
@@ -72,6 +74,7 @@ struct uprobe_task {
        struct arch_uprobe_task         autask;
 
        struct return_instance          *return_instances;
+       unsigned int                    depth;
        struct uprobe                   *active_uprobe;
 
        unsigned long                   xol_vaddr;