#0  0x00007fd932fb6037 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 9654
        selftid = 9660
#1  0x00007fd932fb9698 in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fd932f913e4, sa_sigaction = 0x7fd932f913e4}, sa_mask = {__val = {5, 140570841328477, 3, 140570480591262, 2, 140570841324180, 1, 140570841335208, 3, 140570480591236, 12, 140570841335212, 2, 140570480592048, 10, 140570480593808}}, sa_flags = 118, sa_restorer = 0x7}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fd932ff35ab in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fd933106860 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
        ap = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7fd91d8fcba0, reg_save_area = 0x7fd91d8fcab0}}
        ap_copy = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 0x7fd91d8fcba0, reg_save_area = 0x7fd91d8fcab0}}
        fd = 2
        on_2 = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007fd932fffa46 in malloc_printerr (ptr=0x7fd9000065e0, str=0x7fd933106990 "double free or corruption (out)", action=3) at malloc.c:4902
        buf = "00007fd9000065e0"
        cp = <optimized out>
#4  _int_free (av=<optimized out>, p=0x7fd9000065d0, have_lock=0) at malloc.c:3758
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = <optimized out>
        locked = <optimized out>
        __func__ = "_int_free"
#5  0x00007fd92c8aea37 in initialize_backend (cbdav=cbdav@entry=0x7fd91800d690, perror=perror@entry=0x7fd91d8fcd18) at e-cal-backend-caldav.c:2685
        tmp = 0x7fd9000065e0 "\370"
        auth_extension = <optimized out>
        offline_extension = <optimized out>
        webdav_extension = 0x2345480
        backend = <optimized out>
        soup_uri = <optimized out>
        source = 0x7fd91001d980
        len = <optimized out>
        cache_dir = 0x260e900 "/home/fm/.cache/evolution/calendar/1350751032.30003.4@thinkpad"
        extension_name = 0x7fd92c8b658e "WebDAV Backend"
        __PRETTY_FUNCTION__ = "initialize_backend"
#6  0x00007fd92c8b4a9e in caldav_do_open (backend=0x7fd91800d690, cal=<optimized out>, cancellable=0x2617040, only_if_exists=<optimized out>, perror=0x7fd91d8fcd18) at e-cal-backend-caldav.c:2787
        cbdav = 0x7fd91800d690
        opened = 1
        online = <optimized out>
#7  0x00007fd9341e912a in cal_backend_open (backend=0x7fd91800d690, cal=0x2345280, opid=4, cancellable=0x2617040, only_if_exists=1) at e-cal-backend-sync.c:578
        error = 0x0
#8  0x00007fd9341f23f7 in operation_thread (data=0x26170a0, user_data=<optimized out>) at e-data-cal.c:183
        op = 0x26170a0
        backend = <optimized out>
#9  0x00007fd9335d18b2 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gthreadpool.c:309
        task = 0x26170a0
        pool = 0x2349660
#10 0x00007fd9335d1075 in g_thread_proxy (data=0x234d370) at /build/buildd/glib2.0-2.35.8/./glib/gthread.c:798
        thread = 0x234d370
#11 0x00007fd93334ef8e in start_thread (arg=0x7fd91d8fd700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7fd91d8fd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140570480596736, -4603033848927595381, 0, 140570863546464, 140736697231200, 4096, 4588189479276270731, 4588283411365123211}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#12 0x00007fd933078e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.