Bug 460744
| Summary: | nash misunderstands ppoll() semantics and goes bonkers as a result | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Arjan van de Ven <arjan> |
| Component: | mkinitrd | Assignee: | Peter Jones <pjones> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | dcantrell, wtogami |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-07-14 14:33:14 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: | |||
ok it's even worse than I thought ;( some places in nash *depend* on the timeout being overwritten, while other places in nash depend on it *not* being overwritten for certain error cases. Interesting ;( This message is a reminder that Fedora 9 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 9. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '9'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 9's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 9 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: the ppoll() syscall (similar to select and pselect) modifies the content of the timeout argument and it puts in that the time left from the timeout when an event came in. glibc hides this behavior from applications by making the system call work on a copy, but nash uses the system call directly. the problem is that nash tends to use ppoll in loops and the timeout doesn't get reset each time by nash, so if an event comes in just before the exipiry of the timer... it then will always ask for near zero time in the future. example: pd.revents = 0; while ((rc = nash_ppoll(&pd, 1, top, NULL, 0) < 0)) { if (errno != EINTR) return -1; }