Summary

Parallel signal dispatch may corrupt the stack limit

Metadata

• Id: dfd9968d3506e4ac5dedda14e507c38264c03fde
• Trac id: 1255
• Type: defect
• Reporter: evhan
• Owner:
• Cc: Joerg.Wittenberger@softeyes.net
• Status: closed
• Component: core libraries
• Estimated difficulty:
• Resolution: fixed
• Priority: major
• Milestone: someday
• Version: 4.10.x
• Changetime: 2016-05-21 16:56:30 UTC
• Created: 2016-01-15 00:05:07 UTC
• Keywords: signals threads

Description

As reported by Jörg and discussed in this chicken-hackers thread, when multiple signals are dispatched in parallel it's possible for C_stack_limit to be assigned an invalid value due to a race in C_raise_interrupt.

Changes and comments

[2016-05-21 16:56:30 UTC] sjamaan changed status from new to closed

[2016-05-21 16:56:30 UTC] sjamaan set resolution to fixed

[2016-05-21 16:56:30 UTC] sjamaan wrote:

I think this has been addressed by 5d2a17 / f2ed421 / 10ef6f6