[anatol@argo trunk]$ coredumpctl gdb PID: 28553 (mksnapshot) UID: 1000 (anatol) GID: 100 (users) Signal: 11 (SEGV) Timestamp: Wed 2016-05-18 20:28:41 PDT (6min ago) Command Line: /mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/external/v8_3.30.33.16/build/out/x64.release/mksnapshot --log-snapshot-positions --logfile /mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/external/v8_3.30.33.16/build/out/x64.release/obj.target/v8_snapshot/geni/snapshot.log --random-seed 314159265 /mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/external/v8_3.30.33.16/build/out/x64.release/obj.target/v8_snapshot/geni/snapshot.cc Executable: /mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/external/v8_3.30.33.16/build/out/x64.release/mksnapshot Control Group: /user.slice/user-1000.slice/session-c2.scope Unit: session-c2.scope Slice: user-1000.slice Session: c2 Owner UID: 1000 (anatol) Boot ID: ee1b8b7481d3452988d00de18dd69fe9 Machine ID: 591bc3e32e7e4c43b8bb278a8390178a Hostname: argo Coredump: /var/lib/systemd/coredump/core.mksnapshot.1000.ee1b8b7481d3452988d00de18dd69fe9.28553.1463628521000000000000.lz4 Message: Process 28553 (mksnapshot) of user 1000 dumped core. Stack trace of thread 28553: #0 0x00005624fe713b90 _ZN2v88internal18RootMarkingVisitor19MarkObjectByPointerEPPNS0_6ObjectE (mksnapshot) #1 0x00005624fe84372a _ZN2v88internal12LookupResult7IterateEPNS0_13ObjectVisitorE (mksnapshot) #2 0x00005624fe7a75ad _ZN2v88internal7Isolate7IterateEPNS0_13ObjectVisitorEPNS0_14ThreadLocalTopE (mksnapshot) #3 0x00005624fe6ec7a2 _ZN2v88internal4Heap18IterateStrongRootsEPNS0_13ObjectVisitorENS0_9VisitModeE (mksnapshot) #4 0x00005624fe714329 _ZN2v88internal20MarkCompactCollector9MarkRootsEPNS0_18RootMarkingVisitorE (mksnapshot) #5 0x00005624fe7222a2 _ZN2v88internal20MarkCompactCollector15MarkLiveObjectsEv (mksnapshot) #6 0x00005624fe722efc _ZN2v88internal20MarkCompactCollector14CollectGarbageEv (mksnapshot) #7 0x00005624fe6eef6a _ZN2v88internal4Heap11MarkCompactEv (mksnapshot) #8 0x00005624fe6ef255 _ZN2v88internal4Heap24PerformGarbageCollectionENS0_16GarbageCollectorENS_15GCCallbackFlagsE (mksnapshot) #9 0x00005624fe6f09cb _ZN2v88internal4Heap14CollectGarbageENS0_16GarbageCollectorEPKcS4_NS_15GCCallbackFlagsE (mksnapshot) #10 0x00005624fe6f0b93 _ZN2v88internal4Heap26CollectAllAvailableGarbageEPKc (mksnapshot) #11 0x00005624fe611304 main (mksnapshot) #12 0x00002b1456c81741 __libc_start_main (libc.so.6) #13 0x00005624fe611979 _start (mksnapshot) Stack trace of thread 28555: #0 0x00002b1456a53487 do_futex_wait.constprop.1 (libpthread.so.0) #1 0x00002b1456a53534 __new_sem_wait_slow.constprop.0 (libpthread.so.0) #2 0x00005624feb5faf8 _ZN2v84base9Semaphore4WaitEv (mksnapshot) #3 0x00005624fea2d8a9 _ZN2v88platform9TaskQueue7GetNextEv (mksnapshot) #4 0x00005624fea2dc5b _ZN2v88platform12WorkerThread3RunEv (mksnapshot) #5 0x00005624feb60f2e _ZN2v84baseL11ThreadEntryEPv (mksnapshot) #6 0x00002b1456a4b474 start_thread (libpthread.so.0) #7 0x00002b1456d4869d __clone (libc.so.6) Stack trace of thread 28558: #0 0x00002b1456a53487 do_futex_wait.constprop.1 (libpthread.so.0) #1 0x00002b1456a53534 __new_sem_wait_slow.constprop.0 (libpthread.so.0) #2 0x00005624feb5faf8 _ZN2v84base9Semaphore4WaitEv (mksnapshot) #3 0x00005624fe81ffc0 _ZN2v88internal24OptimizingCompilerThread3RunEv (mksnapshot) #4 0x00005624feb60f2e _ZN2v84baseL11ThreadEntryEPv (mksnapshot) #5 0x00002b1456a4b474 start_thread (libpthread.so.0) #6 0x00002b1456d4869d __clone (libc.so.6) Stack trace of thread 28556: #0 0x00002b1456a53487 do_futex_wait.constprop.1 (libpthread.so.0) #1 0x00002b1456a53534 __new_sem_wait_slow.constprop.0 (libpthread.so.0) #2 0x00005624feb5faf8 _ZN2v84base9Semaphore4WaitEv (mksnapshot) #3 0x00005624fea2d8a9 _ZN2v88platform9TaskQueue7GetNextEv (mksnapshot) #4 0x00005624fea2dc5b _ZN2v88platform12WorkerThread3RunEv (mksnapshot) #5 0x00005624feb60f2e _ZN2v84baseL11ThreadEntryEPv (mksnapshot) #6 0x00002b1456a4b474 start_thread (libpthread.so.0) #7 0x00002b1456d4869d __clone (libc.so.6) Stack trace of thread 28557: #0 0x00002b1456a53487 do_futex_wait.constprop.1 (libpthread.so.0) #1 0x00002b1456a53534 __new_sem_wait_slow.constprop.0 (libpthread.so.0) #2 0x00005624feb5faf8 _ZN2v84base9Semaphore4WaitEv (mksnapshot) #3 0x00005624fea2d8a9 _ZN2v88platform9TaskQueue7GetNextEv (mksnapshot) #4 0x00005624fea2dc5b _ZN2v88platform12WorkerThread3RunEv (mksnapshot) #5 0x00005624feb60f2e _ZN2v84baseL11ThreadEntryEPv (mksnapshot) #6 0x00002b1456a4b474 start_thread (libpthread.so.0) #7 0x00002b1456d4869d __clone (libc.so.6) Stack trace of thread 28554: #0 0x00002b1456a53487 do_futex_wait.constprop.1 (libpthread.so.0) #1 0x00002b1456a53534 __new_sem_wait_slow.constprop.0 (libpthread.so.0) #2 0x00005624feb5faf8 _ZN2v84base9Semaphore4WaitEv (mksnapshot) #3 0x00005624fea2d8a9 _ZN2v88platform9TaskQueue7GetNextEv (mksnapshot) #4 0x00005624fea2dc5b _ZN2v88platform12WorkerThread3RunEv (mksnapshot) #5 0x00005624feb60f2e _ZN2v84baseL11ThreadEntryEPv (mksnapshot) #6 0x00002b1456a4b474 start_thread (libpthread.so.0) #7 0x00002b1456d4869d __clone (libc.so.6) GNU gdb (GDB) 7.11 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/external/v8_3.30.33.16/build/out/x64.release/mksnapshot...(no debugging symbols found)...done. [New LWP 28553] [New LWP 28555] [New LWP 28558] [New LWP 28556] [New LWP 28557] [New LWP 28554] warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". Core was generated by `/mnt/storage/sources/arch/community/rethinkdb/trunk/src/rethinkdb-2.3.2/build/e'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00005624fe713b90 in v8::internal::RootMarkingVisitor::MarkObjectByPointer(v8::internal::Object**) () [Current thread is 1 (Thread 0x2b1455e07fc0 (LWP 28553))]