google chrome HANGUP .BACKTRACE

commandline session (gdb) bt #0  0x00007fd461dbeac3 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=100) at ../sysdeps/unix/sysv/linux/poll.c:87 #1  0x00007fd46643f4d4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2  0x00007fd46643f5f4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3  0x00007fd468940c00 in ?? () #4  0x00007fd468918832 in ?? () #5  0x00007fd4686349ff in ?? () #6  0x00007fd46a2e8811 in ?? () #7  0x00007fd46a2ea31d in ?? () #8  …

pstree command in linux I

Commandline Session $pstree -pA init(1)-+-/usr/sbin/apach(2306)-+-/usr/sbin/apach(4451) |                       |-/usr/sbin/apach(4452) |                       |-/usr/sbin/apach(4453) |                       |-/usr/sbin/apach(4454) |                       `-/usr/sbin/apach(4455) |-NetworkManager(2145)-+-dhclient(4539) |                      |-{NetworkManager}(2196) |                      `-{NetworkManager}(4540) |-accounts-daemon(2233)—{accounts-daemon}(2235) |-at-spi-bus-laun(3756)-+-dbus-daemon(3761) |                       |-{at-spi-bus-laun}(3758) |                       |-{at-spi-bus-laun}(3760) |                       `-{at-spi-bus-laun}(3762) |-at-spi2-registr(3764)—{at-spi2-registr}(37100) |-atd(2334) |-atop(2361) |-avahi-daemon(2372)—avahi-daemon(2373) |-bluetoothd(2399) |-colord(3919)—{colord}(3928) |-colord-sane(3931)-+-{colord-sane}(3935) |                   `-{colord-sane}(4015) |-console-kit-dae(2237)-+-{console-kit-dae}(2238) |                       |-{console-kit-dae}(2239) |                       |-{console-kit-dae}(2240) |                       |-{console-kit-dae}(2241) |                       |-{console-kit-dae}(2242) |                       |-{console-kit-dae}(2243) |                       |-{console-kit-dae}(2244) |                       |-{console-kit-dae}(2245) |                       |-{console-kit-dae}(2246) |                       |-{console-kit-dae}(2247) |                       …