[  152.040585] Unable to handle kernel NULL pointer dereference at virtual address 00000130

[  152.049422] pgd = e2760000

[  152.052602] [00000130] *pgd=62790831, *pte=00000000, *ppte=00000000

[  152.059460] Internal error: Oops: 17 [#1] PREEMPT SMP ARM

[  152.062585] Modules linked in: mali(O) gt9xxnew_ts

[  152.062585] CPU: 0 PID: 1275 Comm: init Tainted: G        W  O 3.10.65 #108

[  152.062585] task: e252ed80 ti: e2e1e000 task.ti: e2e1e000

[  152.062585] PC is at pinctrl_dt_to_map+0x20/0x26c

[  152.062585] LR is at pinctrl_get+0x130/0x3d8

[  152.062585] pc : [<c028ae74>]    lr : [<c0288030>]    psr: a00a0013

2、调用adb工具进入调试模式

forlinx@ubuntu:~/a40i/lichee/linux-3.10$ ../out/sun8iw11p1/linux/common/buildroot/host/opt/ext-toolchain/bin/arm-linux-gnueabihf-gdb vmlinux

3、根据调试信息，定位问题点

forlinx@ubuntu:~/a40i/lichee/linux-3.10$ ../out/sun8iw11p1/linux/common/buildroot/host/opt/ext-toolchain/bin/arm-linux-gnueabihf-gdb vmlinux
GNU gdb (Linaro_GDB-2016.05) 7.11.1.20160702-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from vmlinux...done.
(gdb)
(gdb)
(gdb) l *(pinctrl_dt_to_map+0x20)
0xc028ae74 is in pinctrl_dt_to_map (drivers/pinctrl/devicetree.c:177).
172        return dt_remember_or_free_map(p, statename, NULL, map, 1);
173    }
174   
175    int pinctrl_dt_to_map(struct pinctrl *p)
176    {
177        struct device_node *np = p->dev->of_node;
178        int state, ret;
179        char *propname;
180        struct property *prop;
181        const char *statename;
(gdb)  l *(pinctrl_get+0x130/0x3d8)
0xc0287f00 is in pinctrl_get (drivers/pinctrl/core.c:822).
817    /**
818     * pinctrl_get() - retrieves the pinctrl handle for a device
819     * @dev: the device to obtain the handle for
820     */
821    struct pinctrl *pinctrl_get(struct device *dev)
822    {
823        struct pinctrl *p;
824   
825        if (WARN_ON(!dev))
826            return ERR_PTR(-EINVAL);
(gdb)

gdb工具可以定位到具体是哪一个文件里的哪一行造成的报错。根据提示自行修改即可。