Red Hat Bugzilla – Bug 831132
systemd journal leaks all logs into memory
Last modified: 2012-06-20 15:25:12 EDT
Description of problem: systemd-journald does not munmap log files after rotation. By default this log files are stored in /run/log/journal, which is a tmpfs filesystem, so old log files, though deleted, still occupy memory. Fortunately it crashed before eating all memory: Jun 11 16:46:26 myhost kernel: [150734.343131] systemd-journal[310]: segfault at 8 ip 00000000004061c2 sp 00007fff655d45a0 error 4 in systemd-journald[400000+1f000] Jun 11 16:46:27 myhost systemd[1]: systemd-journald.service: main process exited, code=killed, status=11 Version-Release number of selected component (if applicable): systemd-44-12.fc17.x86_64 How reproducible: Always. Steps to Reproduce: Run a service that generates lots of syslog. Wait until journal logs are rotated. Actual results: /run file system and memory is filling up indefinitely. systemd-journald has all rotated log files mapped into memory: lsof -c systemd-journal | grep /run/log/journal Expected results: By default systemd-journald should use no more than 10% of /run filesystem. Only /run/log/journal/*/system.journal should be mapped into memory.
systemd-journald crashed when no space left on /run filesystem.
I can reproduce the leaks in Rawhide.
I think it's f->header that's leaked.
Fixed upstream: http://cgit.freedesktop.org/systemd/systemd/commit/?id=d384c7a8741aa5dda89c6eee63bfa3107181ee17
systemd-44-13.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/systemd-44-13.fc17
There are no leaks with systemd-44-13. Thanks.
Package systemd-44-14.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing systemd-44-14.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-9471/systemd-44-14.fc17 then log in and leave karma (feedback).
systemd-44-14.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.