Bug 1348935
| Summary: | Buffer overflow when attempting to create filesystem using libgfapi as driver on OpenStack | ||||||
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| Product: | [Community] GlusterFS | Reporter: | Joonas Vilenius <rhbugzilla> | ||||
| Component: | libgfapi | Assignee: | bugs <bugs> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Sudhir D <sdharane> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 3.8.0 | CC: | bugs, joe, ndevos | ||||
| Target Milestone: | --- | Keywords: | Triaged | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 1349276 (view as bug list) | Environment: | |||||
| Last Closed: | 2016-06-28 14:45:40 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: | |||||||
| Bug Depends On: | 1349276 | ||||||
| Bug Blocks: | |||||||
| Attachments: |
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Unless I'm reading this wrong, every place that glfs_io_async_cbk is called, the return value is never checked so when that error takes place, none of the unrefs or frees are ever done. *** This bug has been marked as a duplicate of bug 1350789 *** |
Created attachment 1170681 [details] libvirtd log showing the backtrace and memory map Description of problem: Having GlusterFS to provide OpenStack Cinder volume storage using libgfapi causes buffer overflow when trying to create a filesystem to attached volume. This results qemu-kvm process for the instance to be terminated. Version-Release number of selected component (if applicable): * GlusterFS 3.8.0 on all the involved servers * CentOS 7.1 * libvirt-daemon-1.2.8-16.el7_1.5.x86_64 * qemu-kvm-1.5.3-86.el7_1.8.x86_64 How reproducible: Tested in three different environments and all fail similarly. Steps to Reproduce: 1. deploy an instance 2. attach volume (of type glusterfs) 3. attempt mkfs.ext4 /dev/vdb1 Actual results: [2016-06-22 09:15:09.350992] E [glfs-fops.c:806:glfs_io_async_cbk] (-->/usr/lib64/glusterfs/3.8.0/xlator/debug/io-stats.so(+0x11e12) [0x7eff84cb8e12] -->/lib64/libgfapi.so.0(+0xbe7d) [0x7f0000ce2e7d] -->/lib64/libgfapi.so.0(+0xbd96) [0x7f0000ce2d96] ) 0-gfapi: invalid argument: iovec [Invalid argument] *** buffer overflow detected ***: /usr/libexec/qemu-kvm terminated Expected results: * filesystem to be created without crashing the instance Additional info: There was no such issue with 3.7.11 but we upgraded due to memory leak issues with libgfapi.