Bug 733297
| Summary: | ruby event handlers fail with "exception in callback: wrong argument type Proc (expected Data)" | ||||||
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| Product: | [Community] Virtualization Tools | Reporter: | Richard W.M. Jones <rjones> | ||||
| Component: | libguestfs | Assignee: | Richard W.M. Jones <rjones> | ||||
| Status: | CLOSED UPSTREAM | QA Contact: | |||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | unspecified | CC: | mbooth, mgoldman, virt-maint | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-08-26 10:09:44 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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I won't pretend I really understand what's going on here, but I have posted this workaround: https://www.redhat.com/archives/libguestfs/2011-August/msg00148.html BTW the error messages look scary but are completely benign -- just some unwanted output to stderr. It doesn't crash the Ruby interpreter or libguestfs. Pushed: http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=0cd5b9ac15c62eb570ec74d19b4aebde4990fd82 http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=675f336319058fdbaf11ee004968b4543a5a9815 http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=1a4f1df77eecee053eaae35d5544f151d37342e2 The first two commits are just tidy-up, but are worth including in the full fix anyway. |
Created attachment 519823 [details] test.rb Description of problem: See attached program. Note the bug was found by Marek Goldmann in Boxgrinder. Version-Release number of selected component (if applicable): libguestfs 1.10 through 1.13.7. How reproducible: 100% Steps to Reproduce: 1. Run the attached program. 2. 3. Actual results: At the end of the program the even handler gets into a funny state where it gives lots of errors like this: libguestfs: exception in callback: wrong argument type Proc (expected Data)libguestfs: exception in callback: wrong argument type Proc (expected Data)libguestfs: exception in callback: wrong argument type Proc (expected Data)libguestfs: exception in callback: wrong argument type Proc (expected Data)libguestfs: exception in callback: wrong argument type Proc (expected Data)... Expected results: Should not do that. Additional info: