Handle unsafe operations that access invalid memory more gracefully

PR: 209599 Submitted by: Andrew Smith <iamasmith.home@gmail.com>
svn path=/head/; revision=416825
2016-06-12 21:53:48 +00:00 · 2016-06-12 21:53:48 +00:00 · b13b21cc6c · 2021-03-31 03:12:20 +00:00
commit b13b21cc6c
parent 360dfdadf5
1 changed files with 14 additions and 0 deletions
--- a/java/openjdk8/files/patch-hotspot-src-os_cpu-bsd_x86-vm-os_bsd_x86.cpp
+++ b/java/openjdk8/files/patch-hotspot-src-os_cpu-bsd_x86-vm-os_bsd_x86.cpp
@ -0,0 +1,14 @@
+--- hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp.orig	2016-05-20 12:24:21.966092000 +0100
+++ hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp	2016-05-20 12:46:40.522912000 +0100
+@@ -594,7 +596,11 @@
+           stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
+       }
+     } else if (thread->thread_state() == _thread_in_vm &&
+#ifdef __FreeBSD__
+               (sig == SIGBUS || sig == SIGSEGV) && 
+#else
+                sig == SIGBUS && /* info->si_code == BUS_OBJERR && */
+#endif
+                thread->doing_unsafe_access()) {
+         stub = StubRoutines::handler_for_unsafe_access();
+     }