tree c8eb837f8be1cb223d0f93dd48991c0d9d9b33a7
parent 25162591ca421f5b1742e4292fe64f62baa87607
author Ulrich Weigand <ulrich.weigand@de.ibm.com> 1658156088 +0200
committer Copybara-Service <copybara-worker@google.com> 1658156490 -0700

[libunwind][SystemZ] Use process_vm_readv to avoid potential segfaults

Fix potential crashes during unwind when checking for signal frames
and the current PC is invalid.

The same bug was fixed for aarch64 in https://reviews.llvm.org/D126343.

Reviewed by: MaskRay

Differential Revision: https://reviews.llvm.org/D129856

GitOrigin-RevId: 24ec521cd7bb51447f4ab03460d91c57378d49f7