#0  0x0000003ceba0ee3b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
42				 sig);
(gdb) thread apply all bt full

Thread 1 (Thread 0x7f81ed542740 (LWP 9462)):
#0  0x0000003ceba0ee3b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
        resultvar = 0
        pid = <optimized out>
#1  0x000000000040af8c in crash (sig=6) at src/main.c:123
        rl = {rlim_cur = 18446744073709551615, rlim_max = 18446744073709551615}
        sa = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, 
          sa_restorer = 0}
        pid = 0
        __func__ = "crash"
        __PRETTY_FUNCTION__ = "crash"
#2  <signal handler called>
No symbol table info available.
#3  0x0000003ceb634245 in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 1
#4  0x0000003ceb6357cb in __GI_abort () at abort.c:93
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x14, sa_sigaction = 0x14}, sa_mask = {__val = {261647462297, 44, 4796560, 72, 4795765, 0, 
              41120432, 21, 261647949528, 4812338, 206158430256, 140735702839848, 140735702839632, 0, 1, 140735702839752}}, 
          sa_flags = -1785515576, sa_restorer = 0x2823080}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#5  0x0000000000452249 in log_assert (text=<optimized out>, file=0x492d75 "src/cgroup.c", line=72, func=0x493090 "cgroup_bonding_free", 
    format=<optimized out>) at src/log.c:637
        buffer = "Assertion 'f = hashmap_get(b->unit->manager->cgroup_bondings, b->path)' failed at src/cgroup.c:72, function cgroup_bonding_free(). Aborting.", '\000' <repeats 1907 times>
#6  0x00000000004527c0 in log_assert_failed (text=<optimized out>, file=<optimized out>, line=<optimized out>, func=<optimized out>)
    at src/log.c:642
No locals.
#7  0x00000000004415a6 in cgroup_bonding_free (b=0x26b61a0, trim=false) at src/cgroup.c:72
        f = <optimized out>
        __PRETTY_FUNCTION__ = "cgroup_bonding_free"
#8  0x00000000004415f6 in cgroup_bonding_free_list (first=<optimized out>, remove_or_trim=false) at src/cgroup.c:94
        b = <optimized out>
        n = 0x0
#9  0x0000000000465296 in unit_free (u=0x2a9f830) at src/unit.c:378
        d = _UNIT_DEPENDENCY_MAX
---Type <return> to continue, or q <return> to quit---
        i = 0xffffffffffffffff
        t = <optimized out>
        __PRETTY_FUNCTION__ = "unit_free"
#10 0x000000000040b858 in manager_clear_jobs_and_units (m=0x26989e0) at src/manager.c:441
        j = <optimized out>
        u = <optimized out>
        __PRETTY_FUNCTION__ = "manager_clear_jobs_and_units"
#11 0x0000000000410fbf in manager_reload (m=0x26989e0) at src/manager.c:2900
        r = 0
        q = <optimized out>
        f = 0x280d990
        fds = 0x288df20
        __PRETTY_FUNCTION__ = "manager_reload"
#12 0x0000000000409306 in main (argc=<optimized out>, argv=<optimized out>) at src/main.c:1505
        m = 0x26989e0
        r = <optimized out>
        retval = 1
        before_startup = 3909430
        after_startup = <optimized out>
        timespan = "126ms 156us\000<\000\000\000Pe\240\353<\000\000\000I0\264,\000\000\000\000\006\000\000\000\000\000\000\000\277\000\000\000\000\000\000\000~7\223\225\377\177\000\000ЦF\000\000\000\000"
        fds = 0x0
        reexecute = false
        shutdown_verb = 0x0
        initrd_timestamp = {realtime = <optimized out>, monotonic = 462743}
        systemd = "systemd"
        is_reexec = <optimized out>
        j = <optimized out>
        loaded_policy = false
        __func__ = "main"
        __PRETTY_FUNCTION__ = "main"
(gdb) thread apply all bt

Thread 1 (Thread 0x7f81ed542740 (LWP 9462)):
#0  0x0000003ceba0ee3b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
#1  0x000000000040af8c in crash (sig=6) at src/main.c:123
#2  <signal handler called>
#3  0x0000003ceb634245 in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#4  0x0000003ceb6357cb in __GI_abort () at abort.c:93
#5  0x0000000000452249 in log_assert (text=<optimized out>, file=0x492d75 "src/cgroup.c", line=72, func=0x493090 "cgroup_bonding_free", 
    format=<optimized out>) at src/log.c:637
#6  0x00000000004527c0 in log_assert_failed (text=<optimized out>, file=<optimized out>, line=<optimized out>, func=<optimized out>)
    at src/log.c:642
#7  0x00000000004415a6 in cgroup_bonding_free (b=0x26b61a0, trim=false) at src/cgroup.c:72
#8  0x00000000004415f6 in cgroup_bonding_free_list (first=<optimized out>, remove_or_trim=false) at src/cgroup.c:94
#9  0x0000000000465296 in unit_free (u=0x2a9f830) at src/unit.c:378
#10 0x000000000040b858 in manager_clear_jobs_and_units (m=0x26989e0) at src/manager.c:441
#11 0x0000000000410fbf in manager_reload (m=0x26989e0) at src/manager.c:2900
#12 0x0000000000409306 in main (argc=<optimized out>, argv=<optimized out>) at src/main.c:1505
(gdb)