Bug 1151036
| Summary: | x86_64 nwipe overwrites with half prng data and half zeroes | ||||||||
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| Product: | [Fedora] Fedora EPEL | Reporter: | Richard Ryder <richard.ryder> | ||||||
| Component: | nwipe | Assignee: | Michal Ambroz <rebus> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | high | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | el6 | CC: | rebus | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | nwipe-0.17-3.el6 | Doc Type: | Bug Fix | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2015-07-03 18:43:28 UTC | Type: | Bug | ||||||
| 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 945308 [details]
results of wipe using i686 build
Hello, please I would liketo undestand better your setup. Do I understand it right that you have been trying to nuke (/dev/sda) the primary root hard-drive from which you have been booting? Have you been somehow migrating to ramdisk or was nwipe installed on that disk on the harddrive being nuked? Michal Ambroz Actually there is /dev/sdb on the screenshot so I guess it is not and issue with nuking the same partition. I will try to reproduce. I was booting from a external USB stick and wiping internal drives. Tested with upstream 0.17 - Indeed works bad on 64bit architecture. I was up to report upstream, and found your bug report: https://github.com/martijnvanbrummelen/nwipe/issues/7 I have added instructuions how to reproduce in test environment. Proposed patch on: https://github.com/martijnvanbrummelen/nwipe/issues/7 nwipe-0.17-2.el7 has been submitted as an update for Fedora EPEL 7. https://admin.fedoraproject.org/updates/nwipe-0.17-2.el7 nwipe-0.17-2.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/nwipe-0.17-2.fc22 nwipe-0.17-2.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/nwipe-0.17-2.fc21 nwipe-0.17-3.el6 has been submitted as an update for Fedora EPEL 6. https://admin.fedoraproject.org/updates/nwipe-0.17-3.el6 Package nwipe-0.17-2.fc22: * should fix your issue, * was pushed to the Fedora 22 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing nwipe-0.17-2.fc22' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-10612/nwipe-0.17-2.fc22 then log in and leave karma (feedback). nwipe-0.17-2.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report. nwipe-0.17-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. nwipe-0.17-2.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report. nwipe-0.17-3.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report. |
Created attachment 945307 [details] Incorrect pattern on disk after wipe Description of problem: After wiping a disk nwipe-0.14-2.el6.x86_64.rpm, the disk is wiped with alternating patterns of pseudo-random data and zeroes, not all pseudo-random data as expected. The i686 build overwrites with all PRNG data as expected. Version-Release number of selected component (if applicable): nwipe-0.14-2.el6.x86_64.rpm (again, the i686 build works as expected) How reproducible: 100% of the time Steps to Reproduce: 1. nwipe --autonuke -m prng --noblank --nowait --nogui /dev/sda 2. hexdump -C /dev/sda |head 3. See alternating patterns of zeros and PRNG data on disk, not just PRNG data Actual results: See nwipe-actual.png , Disk is overwritten with repeating cycles of 8 bytes of PRNG data and 8 bytes of zereos Expected results: See nwipe-expected.png , Disk is overwritten with PRNG data Additional info: See attached nwipe-actual.png and nwipe-expected.png for hexdump -C output. Expected output was on disk after running nwipe-0.14-2.el6.i686.rpm Internal security regulations require us to overwrite drives with PRNG data. A mix of PRNG data and zeros is not allowed. I built nwipe-0.16 from upstream and it still suffers from this issue.