Bug#790560: udev fails to start on sparc boot, breaking boot

[Artyom Tarasenko]

Here is the correspondinf part of the gdb session with symbols from
systemd-dbg_224-1_sparc64.deb:

 (gdb) run
Starting program: /lib/systemd/systemd-udevd
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/sparc64-linux-gnu/libthread_db.so.1".

Breakpoint 3, main (argc=<optimized out>, argv=0x7fefffffc98) at
../src/udev/udevd.c:1662
1662            r = parse_proc_cmdline(parse_proc_cmdline_item);
(gdb) next
1663            if (r < 0)
(gdb)
1664                    log_warning_errno(r, "failed to parse kernel
command line, ignoring: %m");
(gdb)
ine, ignoring: Invalid argumentu1666            if (arg_debug) {
(gdb)
1671            if (getuid() != 0) {
(gdb)
1676            if (arg_children_max == 0) {
(gdb)
1679                    arg_children_max = 8;
(gdb)
1681                    if (sched_getaffinity(0, sizeof (cpu_set),
&cpu_set) == 0) {
(gdb)
1682                            arg_children_max += CPU_COUNT(&cpu_set) * 2;
(gdb)
1685                    log_debug("set children_max to %u", arg_children_max);
(gdb)
1690            if (r < 0) {
(gdb)
1691                    r = log_error_errno(errno, "could not change
dir to /: %m");
(gdb)
/devu1760               mac_selinux_finish();
(gdb)
1761            log_close();
(gdb)
1651            _cleanup_free_ char *cgroup = NULL;
(gdb)
1763    }
(gdb)