Bug 479264
| Summary: | [RHEL4] lost siginfo when a signal queue is full | ||||||||
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| Product: | Red Hat Enterprise Linux 4 | Reporter: | Tomas Smetana <tsmetana> | ||||||
| Component: | kernel | Assignee: | Linda Wang <lwang> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Evan McNabb <emcnabb> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | medium | ||||||||
| Version: | 4.6 | CC: | onestero, roland, vgoyal | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | All | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2011-02-16 16:01:53 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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Created attachment 328466 [details]
Proposed patch
My attempt to backport the fix from RHEL-5 kernel. Briefly tested on i386 and seems to work OK.
Looks like a straightforward backport to the current upstream behavior. This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. Committed in 89.6.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/ An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-0263.html |
Created attachment 328465 [details] Testing program Description of problem: When the signal queue is filled up to RLIMIT_SIGPENDING, the subsequent signal (not originated from the sigqueue call) would miss the siginfo. Version-Release number of selected component (if applicable): kernel-2.6.9-78.21 How reproducible: always Steps to Reproduce: 1. compile and run the testing c-program. Actual results: The application prints: signal: signo=11 si_code=0 si_addr=(nil) Expected results: The application prints: signal: signo=11 si_code=1 si_addr=0xffffffff