i.mx6q yocto linux 3.10.17-- login as root,but get "permission denied (are you root?)" while ping

[bennyhuang]

using yocto project linux 3.10.17 and imx6q-sabresd,compiling with the default options.system boot properly.but while i login as root,some commands work wrong

eg.

while pinging the gateway,

root@imx6qsabresd:~# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
ping: permission denied (are you root?)

while reboot

root@imx6qsabresd:~# reboot
reboot: must be superuser.

the file /etc/passwd & /etc/shadow seem properly

/etc/passwd:

root:x:0:0:root:/home/root:/bin/sh
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/bin/sh
man:x:6:12:man:/var/cache/man:/bin/sh
lp:x:7:7:lp:/var/spool/lpd:/bin/sh
mail:x:8:8:mail:/var/mail:/bin/sh
news:x:9:9:news:/var/spool/news:/bin/sh
uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
proxy:x:13:13:proxy:/bin:/bin/sh
www-data:x:33:33:www-data:/var/www:/bin/sh
backup:x:34:34:backup:/var/backups:/bin/sh
list:x:38:38:Mailing List Manager:/var/list:/bin/sh
irc:x:39:39:ircd:/var/run/ircd:/bin/sh
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
avahi:x:999:999::/var/run/avahi-daemon:/bin/false
avahi-autoipd:x:998:998:Avahi autoip daemon:/var/run/avahi-autoipd:/bin/false
messagebus:x:997:996::/var/lib/dbus:/bin/false
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

/etc/shadow:

root:EviqnrSjkYCoE:16686:0:99999:7:::
daemon:*:16686:0:99999:7:::
bin:*:16686:0:99999:7:::
sys:*:16686:0:99999:7:::
sync:*:16686:0:99999:7:::
games:*:16686:0:99999:7:::
man:*:16686:0:99999:7:::
lp:*:16686:0:99999:7:::
mail:*:16686:0:99999:7:::
news:*:16686:0:99999:7:::
uucp:*:16686:0:99999:7:::
proxy:*:16686:0:99999:7:::
www-data:*:16686:0:99999:7:::
backup:*:16686:0:99999:7:::
list:*:16686:0:99999:7:::
irc:*:16686:0:99999:7:::
gnats:*:16686:0:99999:7:::
nobody:*:16686:0:99999:7:::
avahi:!:16686::::::
avahi-autoipd:!:16686::::::
messagebus:!:16686::::::

how can I solve it?

thanks!

[bennyhuang · Accepted solution]

I finally fixes this problem.

chown root:root /bin/busybox.suid

[vijayaragavansr]

Hi benny huang,

that did not work for me. 

below my terminal log

root@hello:~# chown root:root /bin/busybox.suid
chown: /bin/busybox.suid: Operation not permitted
root@hello:~# su
initgroups: Operation not permitted
root@hello:~#

Thanks

vijay

[gusarambula]

Hello Vijayaragavan Srinivasan,

It's odd that the command is not working. I tried it and was successful on the fsl-image-gui image from the L4.1.15 BSP. It's odd that you don't have privileges to do this.  I have also tried with core-image-base from the same BSP Release and it worked as well.

Have you tried adding an extra user with root access?

inherit extrausers
EXTRA_USERS_PARAMS = "usermod -P password root;"

Regards,