8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
Summary: Don't scan pages outside the given range.
Reviewed-by: jwilhelm, jmasa
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp Tue Mar 12 09:42:24 2013 +0100
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp Mon Mar 11 02:24:01 2013 -0700
@@ -2945,7 +2945,7 @@
while (p < (uint64_t)end) {
addrs[0] = p;
size_t addrs_count = 1;
- while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] < (uint64_t)end) {
+ while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) {
addrs[addrs_count] = addrs[addrs_count - 1] + page_size;
addrs_count++;
}
--- a/hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp Tue Mar 12 09:42:24 2013 +0100
+++ b/hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp Mon Mar 11 02:24:01 2013 -0700
@@ -948,6 +948,8 @@
break;
}
if (e != scan_end) {
+ assert(e < scan_end, err_msg("e: " PTR_FORMAT " scan_end: " PTR_FORMAT, e, scan_end));
+
if ((page_expected.size != page_size || page_expected.lgrp_id != lgrp_id())
&& page_expected.size != 0) {
os::free_memory(s, pointer_delta(e, s, sizeof(char)), page_size);