#0  0x00007ffff71e5f79 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 11574
        selftid = 11574
#1  0x00007ffff71e9388 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7ffff5a26de9 <sig_fault>, sa_sigaction = 0x7ffff5a26de9 <sig_fault>}, sa_mask = {__val = {32, 93824994660320, 93824994867408, 7163370350449812225, 
              93824994867472, 0, 0, 0, 0, 1830839040, 93824994867408, 0, 0, 0, 0, 18446744069414584320}}, sa_flags = 335544320, sa_restorer = 0x7ffff71e5ff0 <__restore_rt>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007ffff5a270e9 in smb_panic_default (why=0x7ffff757b620 "Bad talloc magic value - access after free") at ../lib/util/fault.c:149
        __FUNCTION__ = "smb_panic_default"
#3  0x00007ffff5a27127 in smb_panic (why=0x7ffff757b620 "Bad talloc magic value - access after free") at ../lib/util/fault.c:162
No locals.
#4  0x00007ffff75771d2 in talloc_abort (reason=0x7ffff757b620 "Bad talloc magic value - access after free") at ../lib/talloc/talloc.c:341
No locals.
#5  0x00007ffff757724e in talloc_abort_access_after_free () at ../lib/talloc/talloc.c:357
No locals.
#6  0x00007ffff75772cb in talloc_chunk_from_ptr (ptr=0x5555557d71f0) at ../lib/talloc/talloc.c:378
        pp = 0x5555557d71f0 "talloc: access after free error - first free may be at ../source4/auth/kerberos/srv_keytab.c:318\n"
        tc = 0x5555557d7190
#7  0x00007ffff75787c6 in _talloc_steal_loc (new_ctx=0x5555557d4ac0, ptr=0x5555557d71f0, location=0x7fffed6bddf8 "../source4/auth/kerberos/srv_keytab.c:526") at ../lib/talloc/talloc.c:1072
        tc = 0x5555557d7930
#8  0x00007fffed6b6d0e in smb_krb5_update_keytab (parent_ctx=0x5555557d4ac0, context=0x5555557d3930, keytab_name=0x5555557da690 "FILE:./private//etc/mail.keytab", samAccountName=0x5555557da040 "mail-z35", 
    realm=0x5555557d74c0 "KERNEVIL.LAN", SPNs=0x5555557da140, num_SPNs=6, saltPrincipal=0x0, new_secret=0x5555557dc830 "foobar", old_secret=0x0, kvno=1, supp_enctypes=31, delete_all_kvno=false, 
    _keytab=0x0, error_string=0x7fffffffe0f8) at ../source4/auth/kerberos/srv_keytab.c:526
        __talloc_steal_ret = 0x5555557dbc60 "/etc/mail.keytab"
        keytab = 0x5555557d5690
        ret = 2
        found_previous = false
        tmp_ctx = 0x5555557d6220
        principals = 0x5555557d6ae0
        __FUNCTION__ = "smb_krb5_update_keytab"
#9  0x00007fffe3c5b686 in update_kt_prepare_commit (module=0x5555557b04f0) at ../source4/dsdb/samdb/ldb_modules/update_keytab.c:432
        error_string = 0x5555557d71f0 "talloc: access after free error - first free may be at ../source4/auth/kerberos/srv_keytab.c:318\n"
        realm = 0x5555557d74c0 "KERNEVIL.LAN"
        SPNs = 0x5555557da140
        i = 6
        upper_realm = 0x5555557d3af0 "KERNEVIL.LAN"
        spn_el = 0x5555557dbe60
        num_SPNs = 6
        ldb = 0x555555760ee0
        data = 0x555555780290
        p = 0x5555557d5c30
        smb_krb5_context = 0x5555557d2e60
        krb5_ret = 0
        tmp_ctx = 0x5555557d4ac0
#10 0x00007ffff79aab72 in ldb_transaction_prepare_commit (ldb=0x555555760ee0) at ../lib/ldb/common/ldb.c:409
        module = 0x5555557b04f0
        status = 21845
#11 0x00007ffff79aace1 in ldb_transaction_commit (ldb=0x555555760ee0) at ../lib/ldb/common/ldb.c:441
        module = 0x7ffff7ffe1c8
        status = 0
#12 0x0000555555555b8e in merge_edits (ldb=0x555555760ee0, msgs1=0x5555557bcb40, count1=5, msgs2=0x5555557c1ca0, count2=5) at ../lib/ldb/tools/ldbedit.c:179
        i = 5
        msg = 0x5555557c5b70
        ret = 0
        adds = 0
        modifies = 1
        deletes = 0
        req_ctrls = 0x0
#13 0x0000555555555fb5 in do_edit (ldb=0x555555760ee0, msgs1=0x5555557bcb40, count1=5, editor=0x7ffff7781a39 "vi") at ../lib/ldb/tools/ldbedit.c:303
        fd = 7
        ret = 0
        f = 0x5555557802a0
        file_template = "/tmp/ldbedit.TKFQQh"
        cmd = 0x5555557b2430 ""
        ldif = 0x0
        msgs2 = 0x5555557c1ca0
        count2 = 5
#14 0x0000555555556294 in main (argc=3, argv=0x7fffffffe438) at ../lib/ldb/tools/ldbedit.c:368
        ldb = 0x555555760ee0
        result = 0x5555557b2680
        basedn = 0x0
        ret = 0
        expression = 0x555555556570 "(|(objectClass=*)(distinguishedName=*))"
        attrs = 0x0
        mem_ctx = 0x555555758070
        req_ctrls = 0x0
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