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-rw-r--r--tapset/ucontext-unwind.stp6
1 files changed, 4 insertions, 2 deletions
diff --git a/tapset/ucontext-unwind.stp b/tapset/ucontext-unwind.stp
index df275d4b..e1a8ade3 100644
--- a/tapset/ucontext-unwind.stp
+++ b/tapset/ucontext-unwind.stp
@@ -24,7 +24,8 @@
* Equivalent to <command>print_ustack(ubacktrace())</command>,
* except that deeper stack nesting may be supported. Return nothing.
*/
-function print_ubacktrace () %{
+function print_ubacktrace () %{ /* unprivileged */
+ assert_is_myproc();
if (CONTEXT->regs) {
_stp_stack_print(CONTEXT->regs, 1, CONTEXT->pi, MAXTRACE,
current);
@@ -41,7 +42,8 @@ function print_ubacktrace () %{
* string length. Returns empty string when current probe point cannot
* determine user backtrace.
*/
-function ubacktrace:string () %{ /* pure */
+function ubacktrace:string () %{ /* pure */ /* unprivileged */
+ assert_is_myproc();
if (CONTEXT->regs)
_stp_stack_snprint (THIS->__retvalue, MAXSTRINGLEN,
CONTEXT->regs, 0, CONTEXT->pi, MAXTRACE,