[Dovecot] dovecot/auth killed with signal 6

[Edward Burr]

Okay, I figured out about installing debuginfo for a better backtrace, so
here it is:

#0  0x0000003016c32885 in raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = 2598
        selftid = 2598
#1  0x0000003016c34065 in abort () at abort.c:92
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x1, sa_sigaction =
0x1}, sa_mask = {__val = {206536311181, 35954576, 35955280, 0,
206536165913, 4281703, 206536010617,
              206158430224, 140734171103856, 140734171103648, 7, 7,
35807776, 0, 16992, 6717507389398987896}}, sa_flags = 1768709983,
sa_restorer = 0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x000000301683ca78 in default_fatal_finish (type=<value optimized out>,
status=0) at failures.c:187
        backtrace = 0x2226220 "/usr/lib64/dovecot/libdovecot.so.0()
[0x301683ca6a] -> /usr/lib64/dovecot/libdovecot.so.0() [0x301683cab6] ->
/usr/lib64/dovecot/libdovecot.so.0() [0x3016816dba] ->
/usr/lib64/dovecot/libdovecot.so.0("...
#3  0x000000301683cab6 in i_internal_fatal_handler (ctx=0x7fff3a46c2e0,
format=<value optimized out>, args=<value optimized out>) at failures.c:645
        status = 0
#4  0x0000003016816dba in i_panic (format=0xa26 <Address 0xa26 out of
bounds>) at failures.c:259
        ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0}
        args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area =
0x7fff3a46c3b0, reg_save_area = 0x7fff3a46c2f0}}
#5  0x000000301684872f in ioloop_iolist_add (list=<value optimized out>,
io=<value optimized out>) at ioloop-iolist.c:26
        i = <value optimized out>
        idx = <value optimized out>
#6  0x0000003016849149 in io_loop_handle_add (io=0x224a250) at
ioloop-epoll.c:104
        ctx = 0x2243b20
        list = 0x2249558
        event = {events = 1, data = {ptr = 0x16836cd000000000, fd = 0, u32
= 0, u64 = 1622259931392507904}}
        op = <value optimized out>
        first = <value optimized out>
#7  0x0000003016848593 in io_add (fd=13, condition=IO_READ,
callback=0x3016836cd0 <master_service_listen>, context=0x2249f90) at
ioloop.c:54
        io = 0x224a250
        __FUNCTION__ = "io_add"
#8  0x0000003016835b88 in master_service_io_listeners_add
(service=0x222e4d0) at master-service.c:777
        l = 0x2249f90
        i = <value optimized out>
#9  0x00000030168363c2 in master_service_init_finish (service=0x222e4d0) at
master-service.c:385
        st = {st_dev = 8, st_ino = 15492, st_nlink = 1, st_mode = 4480,
st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 0, st_blksize =
4096, st_blocks = 0, st_atim = {
            tv_sec = 1336599449, tv_nsec = 793902156}, st_mtim = {tv_sec =
1336599449, tv_nsec = 793902156}, st_ctim = {tv_sec = 1336599449, tv_nsec =
793902156}, __unused = {0, 0,
            0}}
        value = <value optimized out>
        count = 4096
        __FUNCTION__ = "master_service_init_finish"
#10 0x0000000000415567 in main (argc=1, argv=0x222e370) at main.c:293
        c = <value optimized out>