8197429: Increased stack guard causes segfaults on x86-32

Reviewed-by: dholmes

2 files changed, 6 insertions, 0 deletions

diff --git a/src/os/linux/vm/os_linux.cpp b/src/os/linux/vm/os_linux.cpp
index 387ff0364..4d4dad060 100644
--- a/src/os/linux/vm/os_linux.cpp
+++ b/src/os/linux/vm/os_linux.cpp
@@ -724,6 +724,10 @@ static void _expand_stack_to(address bottom) {
   }
 }
 
+void os::Linux::expand_stack_to(address bottom) {
+  _expand_stack_to(bottom);
+}
+
 bool os::Linux::manually_expand_stack(JavaThread * t, address addr) {
   assert(t!=NULL, "just checking");
   assert(t->osthread()->expanding_stack(), "expand should be set");
diff --git a/src/os/linux/vm/os_linux.hpp b/src/os/linux/vm/os_linux.hpp
index 046d71256..e207dccd7 100644
--- a/src/os/linux/vm/os_linux.hpp
+++ b/src/os/linux/vm/os_linux.hpp
@@ -249,6 +249,8 @@ class Linux {
   static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
 
 private:
+  static void expand_stack_to(address bottom);
+
   typedef int (*sched_getcpu_func_t)(void);
   typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
   typedef int (*numa_max_node_func_t)(void);