RFR: 8062672: JVM crashes during GC on various asserts which checks that HeapWord ptr is an oop

[Stefan Johansson]

Hi,

The fix for 8062672 [1] has been pushed to 7u80 and 8u60 but the patch 
get a small conflict when applied to 9. A bugfix only present in 9 
changed one of the patched lines, but the conflict is easy to solve. A 
diff between the original patch (present in 7 and 8) and the resolved 
one shows only this diff:
 > --- a/src/os_cpu/linux_sparc/vm/vm_version_linux_sparc.cpp
 > +++ b/src/os_cpu/linux_sparc/vm/vm_version_linux_sparc.cpp
30c30
< -    if (fscanf(fp, "cpu\t\t: %100[^\n]", &cpu) == 1) {
---
 > -    if (fscanf(fp, "cpu\t\t: %100[^\n]", cpu) == 1) {

The full webrev is available at:
http://cr.openjdk.java.net/~sjohanss/8062672/9/hotspot.00/

The original review thread can be seen here:
http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-December/016324.html

Thanks,
Stefan

[1] https://bugs.openjdk.java.net/browse/JDK-8062672