am335x 采用nandflash启动android，系统运行半天以上，会出现untracked pid xx exited等错误，系统起不来，重启也没有用，需要重新烧写。

[ 31.830188] yaffs: dev is 32505865 name is "mtdblock9" rw
[ 31.835850] yaffs: passed flags ""
[ 33.537924] PHY: 0:01 - Link is Up - 0/Half
[ 33.545633] PHY: 0:01 - Link is Down
[ 34.001180] libertas_sdio mmc0:0001:1: (unregistered net_device): fc:4d:d4:e1:5c:de, fw 9.70.7p0, cap 0x00000303
[ 34.092119] libertas_sdio mmc0:0001:1: wlan0: Marvell WLAN 802.11 adapter
[ 42.494813] request_suspend_state: wakeup (3->0) at 42494728258 (1970-01-01 00:00:42.492827550 UTC)
[ 42.510782] init: untracked pid 81 exited
[ 42.515064] init: untracked pid 87 exited
[ 43.961668] request_suspend_state: wakeup (0->0) at 43961589050 (1970-01-01 00:00:43.959688925 UTC)
[ 43.976881] init: untracked pid 159 exited
[ 43.988969] init: untracked pid 160 exited
[ 48.015690] request_suspend_state: wakeup (0->0) at 48015610508 (1970-01-01 00:00:48.013710341 UTC)
[ 48.031073] init: untracked pid 187 exited
[ 48.035421] init: untracked pid 188 exited