Bug 1055168
| Summary: | SELinux is preventing /usr/bin/qemu-system-x86_64 from 'write' accesses on the blk_file /dev/dm-6. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Mateusz Marzantowicz <mmarzantowicz> |
| Component: | libvirt | Assignee: | Libvirt Maintainers <libvirt-maint> |
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 20 | CC: | berrange, clalancette, dominick.grift, dwalsh, itamar, jforbes, jyang, laine, libvirt-maint, lvrabec, mgrepl, mmarzantowicz, veillard, virt-maint |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:590e979f677bb8165cea87d13549dcb6b17543e4d02adf9ee7bad1347960f5dd | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-01-20 10:32:02 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: | |||
*** Bug 1055171 has been marked as a duplicate of this bug. *** *** Bug 1055172 has been marked as a duplicate of this bug. *** *** Bug 1055175 has been marked as a duplicate of this bug. *** *** Bug 1055170 has been marked as a duplicate of this bug. *** How did you get it? By default or did you change the labeling? I followd instructions from https://bugzilla.redhat.com/show_bug.cgi?id=1054350 to update my system. I did setenforce 0 and dnf distro-sync. Just after upgrade finished I was floded by selinux alerts (I think two per vm). Here is my dnf history (what I did). Transaction ID : 9 Begin time : Sun Jan 19 12:36:20 2014 Begin rpmdb : 1585:0d9f8682490a49290639f76d689942beb8642bd2 End time : 12:37:10 2014 (50 seconds) End rpmdb : 1585:674d908ee68b7033903770170629bf019aa4958d User : Mateusz Marzantowicz <mmarzantowicz> Return-Code : Success Command Line : distro-sync Transaction performed with: Installed dnf-0.4.11-1.fc20.noarch @updates Installed rpm-4.11.1-7.fc20.x86_64 (unknown) Packages Altered: Upgraded initscripts-9.50-1.fc20.x86_64 (unknown) Upgrade 9.51-1.fc20.x86_64 @updates Upgraded nfs-utils-1:1.2.8-6.0.fc20.x86_64 (unknown) Upgrade 1:1.2.9-2.1.fc20.x86_64 @updates Upgraded selinux-policy-targeted-3.12.1-116.fc20.noarch @updates Upgrade 3.12.1-117.fc20.noarch @updates Upgraded tcpdump-14:4.5.0-1.20131108gitb07944a.fc20.x86_64 (unknown) Upgrade 14:4.5.1-1.fc20.x86_64 @updates Could you try to turn off/on running virtual machines? I relabeled FS on boot yesterday and now I can't reproduce this behavior. I started/stopped virtual machines many time since then with SELinux in Permissive and Enforcing modes. It must have been some update side effect. I can try to downgrade and upgrade selinux-policy-targeted again to see I can trigger this error again. To clarify things - I haven't modified anything in SELinux policy by myself. I'm only using policies contained in RPM. Ok, lets close this bug for now and please reopen if this happens again. Thank you. |
Description of problem: It happened afer updating selinux-policy to selinux-policy-targeted-3.12.1-117.fc20.noarch. It's sad that happenes in stable Fedora. SELinux is preventing /usr/bin/qemu-system-x86_64 from 'write' accesses on the blk_file /dev/dm-6. ***** Plugin catchall (100. confidence) suggests ************************** If aby qemu-system-x86_64 powinno mieć domyślnie write dostęp do dm-6 blk_file. Then proszę to zgłosić jako błąd. Można utworzyć lokalny moduł polityki, aby umożliwić ten dostęp. Do można tymczasowo zezwolić na ten dostęp wykonując polecenia: # grep qemu:Mail /var/log/audit/audit.log | audit2allow -M mojapolityka # semodule -i mojapolityka.pp Additional Information: Source Context system_u:system_r:svirt_t:s0:c9,c556 Target Context system_u:object_r:fixed_disk_device_t:s0 Target Objects /dev/dm-6 [ blk_file ] Source qemu:Mail Source Path /usr/bin/qemu-system-x86_64 Port <Unknown> Host (removed) Source RPM Packages qemu-system-x86-1.6.1-3.fc20.x86_64 Target RPM Packages Policy RPM selinux-policy-3.12.1-117.fc20.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Permissive Host Name (removed) Platform Linux (removed) 3.12.7-300.fc20.x86_64 #1 SMP Fri Jan 10 15:35:31 UTC 2014 x86_64 x86_64 Alert Count 3 First Seen 2014-01-19 12:36:48 CET Last Seen 2014-01-19 12:37:22 CET Local ID 799702e4-2e49-49ea-bafd-ba55b9476469 Raw Audit Messages type=AVC msg=audit(1390131442.612:2407): avc: denied { write } for pid=23452 comm="qemu:Mail" path="/dev/dm-6" dev="devtmpfs" ino=14704 scontext=system_u:system_r:svirt_t:s0:c9,c556 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file type=SYSCALL msg=audit(1390131442.612:2407): arch=x86_64 syscall=pwrite success=yes exit=4096 a0=10 a1=7f9327705000 a2=1000 a3=80121000 items=0 ppid=1 pid=23452 auid=4294967295 uid=107 gid=107 euid=107 suid=107 fsuid=107 egid=107 sgid=107 fsgid=107 ses=4294967295 tty=(none) comm=qemu:Mail exe=/usr/bin/qemu-system-x86_64 subj=system_u:system_r:svirt_t:s0:c9,c556 key=(null) Hash: qemu:Mail,svirt_t,fixed_disk_device_t,blk_file,write Additional info: reporter: libreport-2.1.11 hashmarkername: setroubleshoot kernel: 3.12.7-300.fc20.x86_64 type: libreport