在飞凌imx6q的linux-3.0.35内核上打实时补丁，启动内核后报错，求大神指教

Question

Unable to handle kernel NULL pointer dereference at virtual address 00000000

pgd = 80004000

[00000000] *pgd=00000000

Internal error: Oops: 80000007 [#1] PREEMPT SMP

Modules linked in:

CPU: 0 Not tainted (3.0.35-2666-gbdde708-rt56-gcb741c4-dirty #3)

PC is at 0x0

LR is at activate_task+0x54/0x64

pc : [] lr : [] psr: 80000193

sp : bff87e38 ip : 00000000 fp : bff87e4c

r10: 20000113 r9 : 8003c140 r8 : bff1dda8

r7 : 00000008 r6 : 00000001 r5 : bff1da20 r4 : 8c027140

r3 : 00000000 r2 : 00000001 r1 : bff1da20 r0 : 8c027140

Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel

Control: 10c53c7d Table: 4a5d404a DAC: 00000015

Process ksoftirqd/0 (pid: 3, stack limit = 0xbff862f0)

Stack: (0xbff87e38 to 0xbff88000)

7e20: 00000001 bff1da20

7e40: 8c027140 00000001 bff87e7c 80072b94 00000002 8003c140 80b462a0 80b462a0

7e60: ffff8bfb 80b462a0 00000000 80b462a0 80b5fd5c 00000000 00000000 80542d98

7e80: 8c026f90 ffff8bfb 80b462a0 800830d8 8c026fb8 00000000 af3da8a7 8c026f90

7ea0: 80b5fba0 8003bf90 0bfeb000 00000003 00004e20 803a1e50 bff87edc 8054162c

7ec0: 00004e20 00000000 8bff9ea0 00000000 002c3651 0000005c bffc0000 00000001

7ee0: bffc0000 bff87f10 80b462a0 80ad8200 bff86000 00200200 00000000 00000000

7f00: 803a1c08 80083374 00000000 bff86000 bff87f10 bff87f10 00000006 00000001

7f20: 80ad8184 bff86000 80af2058 80ad8180 00000000 80b46100 00000001 8007c148

7f40: bffdf210 00000000 00000001 00000000 00000000 bff86000 8c00e2b8 00000000

7f60: 80af2058 8003b2b8 00000000 00000000 00000000 8007c304 bff86000 00000000

7f80: 00000001 bff87f94 80b46100 8007c418 00000013 00000001 00000000 bff81f28

7fa0: 00000000 8007c35c 00000013 00000000 00000000 800916a8 00000000 00000000

7fc0: 00000000 00000000 00000000 bff87fcc bff87fcc 00000000 00000000 00000000

7fe0: bff87fe0 bff87fe0 bff81f28 80091628 80043a24 80043a24 00000000 08040420

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Code: bad PC value

Answer 1

我也遇到过着问题后来开启调试信息， 卡在

Starting kernel ...

Uncompressing Linux... done, booting the kernel.