Bug 1730475

Summary: CephFS MDSRank.cc: 1301: FAILED assert(session->get_nref() == 1)
Product: [Red Hat Storage] Red Hat Ceph Storage Reporter: Vikhyat Umrao <vumrao>
Component: CephFSAssignee: Patrick Donnelly <pdonnell>
Status: CLOSED DUPLICATE QA Contact: ceph-qe-bugs <ceph-qe-bugs>
Severity: high Docs Contact:
Priority: high    
Version: 3.2CC: ceph-eng-bugs, pdonnell, sweil
Target Milestone: rc   
Target Release: 3.*   
Hardware: x86_64   
OS: Linux   
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Last Closed: 2019-07-16 20:35:09 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Vikhyat Umrao 2019-07-16 20:06:20 UTC 
Description of problem:

2019-07-16 11:07:04.039123 7f3fe1fa6700 -1 /builddir/build/BUILD/ceph-12.2.8/src/mds/MDSRank.cc: In function 'Session* MDSRank::get_session(Message*)' thread 7f3fe1fa6700 time 2019-07-16 11:07:04.034913
/builddir/build/BUILD/ceph-12.2.8/src/mds/MDSRank.cc: 1301: FAILED assert(session->get_nref() == 1)

 ceph version 12.2.8-128.0.hotfix.bz1718135.el7cp (196a006f442929557380a1778a96b427532b110c) luminous (stable)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x110) [0x55d31ffed810]
 2: (MDSRank::get_session(Message*)+0x7af) [0x55d31fcb80bf]
 3: (Server::handle_client_session(MClientSession*)+0x32) [0x55d31fd10f62]
 4: (Server::dispatch(Message*)+0x5cb) [0x55d31fd42d9b]
 5: (MDSRank::handle_deferrable_message(Message*)+0x804) [0x55d31fcafbe4]
 6: (MDSRank::_dispatch(Message*, bool)+0x1e3) [0x55d31fcc7853]
 7: (MDSRankDispatcher::ms_dispatch(Message*)+0xa0) [0x55d31fcc8720]
 8: (MDSDaemon::ms_dispatch(Message*)+0xf3) [0x55d31fca6a43]
 9: (DispatchQueue::entry()+0x792) [0x55d3202e5582]
 10: (DispatchQueue::DispatchThread::entry()+0xd) [0x55d320073d0d]
 11: (()+0x7dd5) [0x7f3fe5febdd5]
 12: (clone()+0x6d) [0x7f3fe50cbb3d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.


Version-Release number of selected component (if applicable):
RHCS 3.2.z2 + hotfix
12.2.8-128.0.hotfix.bz1718135.el7cp
Comment 4 Vikhyat Umrao 2019-07-16 20:14:42 UTC 
https://tracker.ceph.com/issues/40200
https://github.com/ceph/ceph/pull/28467