Bug 1115890
| Summary: | tar: SIGSEGV due to infinite symlink directory loop | ||||||||||||||||||||||||||
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| Product: | [Fedora] Fedora | Reporter: | Jay Elem <fiver22> | ||||||||||||||||||||||||
| Component: | tar | Assignee: | Ondrej Dubaj <odubaj> | ||||||||||||||||||||||||
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||||||||||||||||||||
| Severity: | unspecified | Docs Contact: | |||||||||||||||||||||||||
| Priority: | unspecified | ||||||||||||||||||||||||||
| Version: | rawhide | CC: | ccovingt, kdudka, odubaj, ovasik, panovotn, praiskup, rracicot | ||||||||||||||||||||||||
| Target Milestone: | --- | Keywords: | FutureFeature | ||||||||||||||||||||||||
| Target Release: | --- | ||||||||||||||||||||||||||
| Hardware: | x86_64 | ||||||||||||||||||||||||||
| OS: | Unspecified | ||||||||||||||||||||||||||
| URL: | https://retrace.fedoraproject.org/faf/reports/bthash/5039e0b140034889c3d4373b908f6f0822de308d | ||||||||||||||||||||||||||
| Whiteboard: | abrt_hash:20d7dcaeeb59b3303ae9129f38a000c105843d08 | ||||||||||||||||||||||||||
| Fixed In Version: | Doc Type: | Enhancement | |||||||||||||||||||||||||
| Doc Text: | Story Points: | --- | |||||||||||||||||||||||||
| Clone Of: | Environment: | ||||||||||||||||||||||||||
| Last Closed: | 2021-10-07 07:25:52 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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Description
Jay Elem
2014-07-03 09:41:50 UTC
Created attachment 914426 [details]
File: backtrace
Created attachment 914427 [details]
File: cgroup
Created attachment 914428 [details]
File: core_backtrace
Created attachment 914429 [details]
File: dso_list
Created attachment 914430 [details]
File: environ
Created attachment 914431 [details]
File: exploitable
Created attachment 914432 [details]
File: limits
Created attachment 914433 [details]
File: maps
Created attachment 914434 [details]
File: open_fds
Created attachment 914435 [details]
File: proc_pid_status
Created attachment 914436 [details]
File: var_log_messages
Thanks for the report, Jay - reproducible. Tar seems to go into unlucky infinite recurse with -h (symlinks) when traversing directory structure under /dev. It is reproducible by: $ mkdir a $ ln -s ../a a/a $ tar -chf /dev/null a Tar should defend against this somehow - older tars were failing (because there were done major changes how tar handles opening files) with: Cannot stat: Too many levels of symbolic links -- Jay, as a solution I would avoid using -h option for your backups (and maybe I would also avoid backing up special filesystems) when possible. I'll discuss this issue with upstream. Pavel Proposed patch: http://www.mail-archive.com/bug-tar@gnu.org/msg04542.html *** Bug 1177363 has been marked as a duplicate of this bug. *** This message is a reminder that Fedora 20 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 20. 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 EOL if it remains open with a Fedora 'version' of '20'. 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. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 20 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, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. 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. Still not applied upstream, there happened yet another thread upstream not mentioned here in this bug: http://www.mail-archive.com/bug-tar@gnu.org/msg04764.html This bug was accidentally moved from POST to MODIFIED via an error in automation, please see mmccune with any questions Another upstream bug report: http://www.mail-archive.com/bug-tar@gnu.org/msg04764.html *** Bug 1398029 has been marked as a duplicate of this bug. *** According to the low priority of this request and as it did not bother any user for years, I am closing this tracker. If you think this issue should be handled and investigated, feel free to reopen it. |