.
Thread 1 (LWP 2273):
#0  malloc_consolidate (av=av@entry=0x7f1417226760 <main_arena>) at malloc.c:4149
        fb = <optimized out>
        maxfb = 0x7f14172267b0 <main_arena+80>
        p = 0x7f1411a22cf0
        nextp = <optimized out>
        unsorted_bin = 0x7f14172267b8 <main_arena+88>
        first_unsorted = <optimized out>
        nextchunk = <optimized out>
        size = <optimized out>
        nextsize = <optimized out>
        prevsize = <optimized out>
        nextinuse = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        __func__ = "malloc_consolidate"
#1  0x00007f1416ee73ad in _int_free (av=0x7f1417226760 <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4057
        size = 65792
        fb = <optimized out>
        nextchunk = 0x7f141992c4a0
        nextsize = 4112
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = 0x0
        locked = <optimized out>
#2  0x00007f141743c259 in gdbm_close () from /tmp/apport_sandbox_NjKu0I/usr/lib/x86_64-linux-gnu/libgdbm.so.3
No symbol table info available.
#3  0x00007f14178621a4 in man_gdbm_close (wrap=0x7f1419910b50) at ../../../libdb/db_gdbm.c:240
No locals.
#4  0x00007f1417c91f04 in update_db (manpath=manpath@entry=0x7f1419912ef0 "/usr/share/man", catpath=catpath@entry=0x7f1419911c70 "/var/cache/man") at ../../../src/check_mandirs.c:672
        key = {dptr = 0x7f14199ce6e0 "$mtime$", dsize = 8}
        content = {dptr = 0x7f14199ce6c0 "1396929457", dsize = 11}
        new = <optimized out>
#5  0x00007f1417c9703a in update_db_wrapper (catpath=0x7f1419911c70 "/var/cache/man", manpath=0x7f1419912ef0 "/usr/share/man") at ../../../src/mandb.c:363
        amount = <optimized out>
#6  mandb (catpath=catpath@entry=0x7f1419911c70 "/var/cache/man", manpath=0x7f1419912ef0 "/usr/share/man") at ../../../src/mandb.c:509
        dbname = <optimized out>
        cachedir_tag = <optimized out>
        st = {st_dev = 2049, st_ino = 533220, st_nlink = 1, st_mode = 33188, st_uid = 6, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 190, st_blksize = 4096, st_blocks = 8, st_atim = {tv_sec = 1396370885, tv_nsec = 0}, st_mtim = {tv_sec = 1396370885, tv_nsec = 0}, st_ctim = {tv_sec = 1396556919, tv_nsec = 737567338}, __unused = {0, 0, 0}}
#7  0x00007f1417c973f8 in process_manpath (manpath=0x7f1419912ef0 "/usr/share/man", global_manpath=global_manpath@entry=1, tried_catdirs=tried_catdirs@entry=0x7f1419911d30) at ../../../src/mandb.c:571
        ret = <optimized out>
        catpath = 0x7f1419911c70 "/var/cache/man"
        tried = 0x7f1419910be0
        st = {st_dev = 2049, st_ino = 395611, st_nlink = 33, st_mode = 16877, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 4096, st_blksize = 4096, st_blocks = 8, st_atim = {tv_sec = 1396885636, tv_nsec = 573539730}, st_mtim = {tv_sec = 1396370874, tv_nsec = 0}, st_ctim = {tv_sec = 1396556937, tv_nsec = 863897781}, __unused = {0, 0, 0}}
        amount = 0
        __PRETTY_FUNCTION__ = "process_manpath"
#8  0x00007f1417c90566 in main (argc=<optimized out>, argv=<optimized out>) at ../../../src/mandb.c:840
        global_manpath = 1
        ret = <optimized out>
        dir = <optimized out>
        subdirent = <optimized out>
        sys_manp = <optimized out>
        amount = 0
        mp = 0x7f1417eac400 <manpathlist>
        tried_catdirs = 0x7f1419911d30
        sa = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x0}