Ceph

http://qa-proxy.ceph.com/teuthology/teuthology-2015-02-08_23:08:01-kcephfs-hammer-testing-basic-multi/745270/
http://qa-proxy.ceph.com/teuthology/teuthology-2015-02-08_23:08:01-kcephfs-hammer-testing-basic-multi/745245/

2015-02-09T09:24:32.305 INFO:tasks.ceph.osd.3.burnupi29.stderr:osd/ReplicatedPG.cc: In function 'virtual void ReplicatedPG::_scrub(ScrubMap&)' thread 7f58ddd74700 time 2015-02-09 09:24:32.135066
2015-02-09T09:24:32.305 INFO:tasks.ceph.osd.3.burnupi29.stderr:osd/ReplicatedPG.cc: 12991: FAILED assert(obc)
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: ceph version 0.92-941-g14dbe1d (14dbe1ded294277bd75b3d4c128c73e3c1daf860)
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x8b) [0xbc32eb]
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 2: (ReplicatedPG::_scrub(ScrubMap&)+0x2284) [0x8937f4]
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 3: (PG::scrub_compare_maps()+0xd2b) [0x7f18cb]
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 4: (PG::chunky_scrub(ThreadPool::TPHandle&)+0x1ee) [0x7f49fe]
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 5: (PG::scrub(ThreadPool::TPHandle&)+0x2ee) [0x7f636e]
2015-02-09T09:24:32.306 INFO:tasks.ceph.osd.3.burnupi29.stderr: 6: (OSD::ScrubWQ::_process(PG*, ThreadPool::TPHandle&)+0x19) [0x6cb9c9]
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr: 7: (ThreadPool::worker(ThreadPool::WorkThread*)+0xa46) [0xbb4476]
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr: 8: (ThreadPool::WorkThread::entry()+0x10) [0xbb5520]
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr: 9: (()+0x8182) [0x7f58fe61c182]
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr: 10: (clone()+0x6d) [0x7f58fcb86fbd]
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr: NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr:2015-02-09 09:24:32.304967 7f58ddd74700 -1 osd/ReplicatedPG.cc: In function 'virtual void ReplicatedPG::_scrub(ScrubMap&)' thread 7f58ddd74700 time 2015-02-09 09:24:32.135066
2015-02-09T09:24:32.307 INFO:tasks.ceph.osd.3.burnupi29.stderr:osd/ReplicatedPG.cc: 12991: FAILED assert(obc)

These are from kcephfs suite run and I didn't find any tickets for that assert when searching.