Just hit that today. FYI #0 0x00007f22d25008a8 in __pthread_mutex_cond_lock_full (mutex=0xca) at ../nptl/pthread_mutex_lock.c:409 #1 0x00007f22d2747970 in ?? () #2 0x0000564037d2bae0 in frame_dummy () #3 0x0000564037d2bb7d in test_runner_init (init=init@entry=false) at tests.c:55 #4 0x0000564037d6e340 in post_test (init=0x564037d2bae0 , init@entry=0x564038cdcdd0, check_leaks=check_leaks@entry=false, failures=failures@entry=0x564038c160e0, name=, i=i@entry=1, leaks=leaks@entry=0x7ffe92cb780c) at test_runner.c:350 #5 0x0000564037d6eada in run_case (cfg=0x0, init=0x564038cdcdd0, tcase=0x564038c80470) at test_runner.c:461 #6 run_suite (cfg=0x0, init=0x564038cdcdd0, suite=0x564038cdd860) at test_runner.c:520 #7 test_runner_run (name=0x564037d6f1cd "libstrongswan", configs=, init=0x564038cdcdd0) at test_runner.c:580 #8 0x00007f22d214d3f1 in add_derivation (nsteps=, handle=, toset=0xbceb08488b48308b , fromset=0xc672cb394818758b ) at gconv_db.c:165 #9 find_derivation (toset=, toset_expand=, fromset=, fromset_expand=, handle=, nsteps=) at gconv_db.c:696 #10 0xddf6258d4c544155 in ?? () #11 0xddf62d8d48550021 in ?? () #12 0x8949f68949530021 in ?? () #13 0x08ec8348e5294cd5 in ?? () #14 0xfbc107e803fdc148 in ?? () #15 0xdb312074ed8548ff in ?? () #16 0x0000000000841f0f in ?? () #17 0x8944f6894cea894c in ?? () #18 0xc38348dc14ff41ff in ?? () #19 0x8348ea75dd394801 in ?? () #20 0x5d415c415d5b08c4 in ?? () #21 0x2e6690c35f415e41 in ?? () #22 0x0000000000841f0f in ?? () #23 0x08ec83480000c3f3 in ?? () #24 0x000000c308c48348 in ?? () #25 0x5453455400020001 in ?? () #26 0x4e4947554c505f53 in ?? () #27 0x2e73747365740053 in ?? () #28 0x7365740064616f6c in ?? () #29 0x6967756c702e7374 in ?? () #30 0x62696c007269646e in ?? () #31 0x7773676e6f727473 in ?? () #32 0x3a70747468006e61 in ?? () #33 0x0000000000002f2f in ?? () #34 0x6365762d74736574 in ?? () #35 0x626e752073726f74 in ?? () #36 0x61646c20646e756f in ?? () #37 0x313173636b702070 in ?? () ---Type to continue, or q to quit--- #38 0x6120696e73656120 in ?? () #39 0x7320326372207365 in ?? () #40 0x3161687320326168 in ?? () #41 0x35646d2034646d20 in ?? () #42 0x6472203166676d20 in ?? () #43 0x6e617220646e6172 in ?? () #44 0x636e6f6e206d6f64 in ?? () #45 0x7220393035782065 in ?? () #46 0x6f697461636f7665 in ?? () #47 0x7274736e6f63206e in ?? () #48 0x63612073746e6961 in ?? () #49 0x6b62757020747265 in ?? () #50 0x3173636b70207965 in ?? () #51 0x70203773636b7020 in ?? () #52 0x636b70203873636b in ?? () #53 0x2070677020323173 in ?? () #54 0x732079656b736e64 in ?? () #55 0x65702079656b6873 in ?? () #56 0x73736e65706f206d in ?? () #57 0x747079726367206c in ?? () #58 0x20676c612d666120 in ?? () #59 0x6672702d73706966 in ?? () #60 0x65676120706d6720 in ?? () #61 0x6f7061686320746e in ?? () #62 0x206362637820796c in ?? () #63 0x616d682063616d63 in ?? () #64 0x6363207274632063 in ?? () #65 0x746e206d6367206d in ?? () #66 0x7373696c62207572 in ?? () #67 0x6f73206c72756320 in ?? () #68 0x6c7173796d207075 in ?? () #69 0x006574696c717320 in ?? () #70 0x732f646c6975622f in ?? () #71 0x617773676e6f7274 in ?? () #72 0x7530467a73502d6e in ?? () #73 0x73676e6f7274732f in ?? () #74 0x2e352e352d6e6177 in ?? () #75 0x696c2f6372732f31 in ?? () #76 0x73676e6f72747362 in ?? () #77 0x67756c702f6e6177 in ?? () #78 0x0000000000736e69 in ?? () #79 0x65673e2d7473696c in ?? () ---Type to continue, or q to quit--- #80 0x28746e756f635f74 in ?? () #81 0x3d2120297473696c in ?? () #82 0x2120642528203520 in ?? () #83 0x000000296425203d in ?? () #84 0x69663e2d7473696c in ?? () #85 0x74737269665f646e in ?? () #86 0x28202c7473696c28 in ?? () #87 0x6c5f64656b6e696c in ?? () #88 0x6374616d5f747369 in ?? () #89 0x6374616d29745f68 in ?? () #90 0x26202c625f615f68 in ?? () #91 0x2962202c61202c78 in ?? () #92 0x5f544f4e203d3d20 in ?? () #93 0x000000444e554f46 in ?? () #94 0x69663e2d7473696c in ?? () #95 0x74737269665f646e in ?? () #96 0x28202c7473696c28 in ?? () #97 0x6c5f64656b6e696c in ?? () #98 0x6374616d5f747369 in ?? () #99 0x6374616d29745f68 in ?? () #100 0x4c554e202c615f68 in ?? () #101 0x3d3d202961202c4c in ?? () #102 0x5353454343555320 in ?? () #103 0x0000000000000000 in ?? ()