Bug 124689
| Summary: | Machine hang triggered by mkisofs | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Bert DeKnuydt <deknuydt> |
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | medium | ||
| Version: | 2 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-06-15 12:23:47 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: | |||
Update: with kernel-2.6.6-1.406, I can no longer trigger it; but in SMP with kernel-smp-2.6.6-1.406 it is still present. Update: kernel-2.6.6-1.422 seems not to have it. kernel-smp-2.6.6-1.422 in SMP still has it, though slightly differently: the mkisofs-process goes into 100% system, is un-interrruptible; console of machine is dead, but remote access to the machine is okay. Hard reboot is still necessary though. We're at 2.6.6-1.427smp now, with mkisofs-2.01-0.a27.4. Still getting a 100% CPU un-interruptible proces. Not getting any wiser from the /proc info for that process neither. A collegue of mine figured out that the 4G/4G patch is the culprit: without it, no problems. we fixed a rare cornercase in the 4g/4g patch in 435 kernel (out as erratum now) that may explain this.... Yap, problem fixed in 2.6.6-1.435smp, thanks! |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115 Description of problem: Running mkisofs, with option '-h' results in a machine hang. Input and can be either from NFS or local disk. Input has to be at least abt. 50 MB large. Typically, when 95 to 99% is done (as says the -v option), the program stalls, and consumes 100% CPU. No extra memory seems to be consumed. A few seconds later, the machine grinds to a halt completely. No swapping noise, no disk io. It does not happen always, but definitely more than 90% of the time. Without option '-h', all works perfectly. An strace reported a 'munmap' as the last syscall. Version-Release number of selected component (if applicable): kernel-smp-2.6.5-1.358 and mkisofs-2.01-0.a27.3 How reproducible: Sometimes Steps to Reproduce: 1. Choose a directory tree with abt. 50 MB or more. 2. mkisofs -v -h -o rubbish.iso <this_directory_tree> 3. Wait for 95% finished. 4. Hang... Actual Results: The machine uses 100% CPU (Which I could see running it on an SMP). This lasts for a short time (seconds). Then there's a complete freeze. Expected Results: Mkisofs should have exited normally. Or if need be crash. But should never trigger a machine hang. Additional info: