On 24/05/2019 12:12, Andrew Stubbs wrote:
This patch fixes a 64-bit arithmetic bug in which the wrong instruction
was used for the lo-part resulting in an incorrect calculation for the
hi-part (signed vs. unsigned add). This causes a Memory Access Fault
whenever the launcher happens to choose a problematic address for the
stack allocation.
This problem never occurred on GCN3 because the launcher always chose
addresses in the 32-bit range. It seems to happen more frequently on
GCN5 devices since a recent ROCm update.
Now backported to gcc-9-branch.
Andrew
