signal.c: last tag page condition

* signal.c (check_stack_overflow): drop the last tag when it is
  close to the fault page, not same as sp page.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58363 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/signal.c b/signal.c
index 2c37928256..412782e44f 100644
--- a/signal.c
+++ b/signal.c
@@ -843,7 +843,7 @@ check_stack_overflow(int sig, const uintptr_t addr, const ucontext_t *ctx)
     if (sp_page == fault_page || sp_page == fault_page + 1 ||
 	sp_page <= fault_page && fault_page <= bp_page) {
 	rb_thread_t *th = ruby_current_thread;
-	if ((uintptr_t)th->tag->buf / pagesize == sp_page) {
+	if ((uintptr_t)th->tag->buf / pagesize <= fault_page + 1) {
 	    /* drop the last tag if it is close to the fault,
 	     * otherwise it can cause stack overflow again at the same
 	     * place. */