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diff src/os_cpu/linux_x86/vm/os_linux_x86.cpp @ 8710:9058789475af

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7107135: Stack guard pages are no more protected after loading a shared library with executable stack Summary: Detect the execstack attribute of the loaded library and attempt to fix the stack guard using Safepoint op. Reviewed-by: dholmes, zgu Contributed-by: ioi.lam@oracle.com
author iklam
date Tue, 05 Mar 2013 13:55:56 -0800
parents 12285410684f
children 9ef47379df20
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--- a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Tue Mar 05 08:50:59 2013 +0100
+++ b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Tue Mar 05 13:55:56 2013 -0800
@@ -305,6 +305,11 @@
           // to handle_unexpected_exception way down below.
           thread->disable_stack_red_zone();
           tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
+
+          // This is a likely cause, but hard to verify. Let's just print
+          // it as a hint.
+          tty->print_raw_cr("Please check if any of your loaded .so files has "
+                            "enabled executable stack (see man page execstack(8))");
         } else {
           // Accessing stack address below sp may cause SEGV if current
           // thread has MAP_GROWSDOWN stack. This should only happen when