Bug #11851: rb_profile_frames() causes segmentation fault

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0dev (2015-12-20 trunk 53215) [x86_64-linux]
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED

[rhenium (Kazuki Yamaguchi)]

When the control frame stack contains an ifunc-frame, calling rb_profile_frames() causes a segmentation fault.

I've attached a patch that changes it to ignore ifunc frames as it did previously.

[nobu (Nobuyoshi Nakada)]

Could you show reproducible code or add a test?

[rhenium (Kazuki Yamaguchi)]

Uploaded reproducible code to Gist: https://gist.github.com/rhenium/e3a179b0cac87606c183

This runs on Ruby 2.2.4 and patched trunk but segfaults on trunk.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r53225.

---

vm_backtrace.c: ignore ifunc frames

• vm_backtrace.c (rb_profile_frames): ignore ifunc frames as it
  did before. [ruby-core:72409] [Bug #11851]

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED