============問題描述============

在uboot里面屏蔽了MMU?使能
//#define?CONFIG_ENABLE_MMU
就導致android?2.3?在S5pv210?上不穩定了，如果沒屏蔽就穩定很多，why？！
坑爹的人啊，問了一些做了幾年linux和android的人說沒影響的，啥玩意啊，怎么會這么挫呢！
尤其是S5pv210?的GPU?驅動，出問題最頻繁，如果是我內存參數傳遞有誤，系統是不會啟動的，怎么搞成這樣呢？
有經驗的過來說說吧。

下面是這幾天的實驗現象


重復啟動會遇到這種問題,系統死機了：
[????2.896160]?android_usb?gadget:?high?speed?config?#1:?Android?Composite
[????4.510793]?request_suspend_state:?wakeup?(3->0)?at?3981410419?(2010-01-01?12:00:04.019802543?UTC)
[????4.521102]?init:?untracked?pid?51?exited
[????4.523756]?init:?untracked?pid?55?exited
[???13.611361]?Internal?error:?Oops?-?undefined?instruction:?0?[#1]?PREEMPT
[???13.616584]?last?sysfs?file:?/sys/power/state
[???13.620944]?Unable?to?handle?kernel?paging?request?at?virtual?address?0a0000de
[???13.628110]?pgd?=?c0004000
[???13.630795]?[0a0000de]?*pgd=00000000
[???21.121137]?BUG:?spinlock?lockup?on?CPU#0,?/0,?c0510374
[???21.124869]?Backtrace:?
[???21.127324]?[<c0031fb8>]?(dump_backtrace+0x0/0x110)?from?[<c0392880>]?(dump_stack+0x18/0x1c)
[???21.135703]??r6:00000000?r5:c0088000?r4:c0510374?r3:e1a00005
[???21.141343]?[<c0392868>]?(dump_stack+0x0/0x1c)?from?[<c01976c4>]?(do_raw_spin_lock+0x128/0x168)
[???21.150008]?[<c019759c>]?(do_raw_spin_lock+0x0/0x168)?from?[<c0395804>]?(_raw_spin_lock_irq+0x2c/0x30)
[???21.159272]??r8:00000005?r7:c049cd52?r6:c0088038?r5:c008a0d0?r4:c008a0d0
[???21.165951]?[<c03957d8>]?(_raw_spin_lock_irq+0x0/0x30)?from?[<c0032330>]?(die+0x30/0x1cc)
[???21.174098]?[<c0032300>]?(die+0x0/0x1cc)?from?[<c00348cc>]?(__do_kernel_fault+0x6c/0x8c)
[???21.182149]??r8:00000000?r7:00000005?r6:00000000?r5:c008a0d0?r4:0a0000de
[???21.188827]?[<c0034860>]?(__do_kernel_fault+0x0/0x8c)?from?[<c0034acc>]?(do_page_fault+0x1e0/0x1fc)
[???21.197834]??r8:00000000?r7:0a0000de?r6:00000001?r5:c008a0d0?r4:c0571fd0
[???21.204333]?r3:c008a0d0
[???21.206939]?[<c00348ec>]?(do_page_fault+0x0/0x1fc)?from?[<c0034b98>]?(do_translation_fault+0x24/0xa0)
[???21.216125]?[<c0034b74>]?(do_translation_fault+0x0/0xa0)?from?[<c002d2f4>]?(do_DataAbort+0x3c/0xa0)
[???21.225131]??r6:0a0000de?r5:c051044c?r4:00000005?r3:c05103fc
[???21.230769]?[<c002d2b8>]?(do_DataAbort+0x0/0xa0)?from?[<c002da6c>]?(__dabt_svc+0x4c/0x60)




又遇到這種問題了
ext4format?按復位10次不到又死機了。
[???11.329304]?Modules?linked?in:
[???11.332340]?CPU:?0????Not?tainted??(2.6.35.7?#1)
[???11.336932]?PC?is?at?0xe41ab000
[???11.340059]?LR?is?at?do_PrefetchAbort+0x3c/0xa0
[???11.344558]?pc?:?[<e41ab000>]????lr?:?[<c002d254>]????psr:?60000193
[???11.344564]?sp?:?ee9d3c28??ip?:?00000004??fp?:?3162c3ef
[???11.355994]?r10:?c051e8d8??r9?:?20000193??r8?:?3b1235a2
[???11.361194]?r7?:?ee9d3cb0??r6?:?e52d1004??r5?:?c051063c??r4?:?c002d2f4
[???11.367693]?r3?:?c05105fc??r2?:?ee9d3cb0??r1?:?c002d2f4??r0?:?e52d1004
[???11.374194]?Flags:?nZCv??IRQs?off??FIQs?on??Mode?SVC_32??ISA?ARM??Segment?user
[???11.381385]?Control:?10c5387d??Table:?4e9d4019??DAC:?00000015
[???11.387103]?
[???11.387106]?PC:?0xe41aaf80:
[???11.391348]?af80??00000000?00000000?00000000?00000000?00000000?00000000?00000000?00000000
[???11.399494]?afa0??00000000?00000000?00000000?00000000?00000000?00000000?00000000?00000000
[???11.407639]?afc0??00000000?00000000?00000000?00000000?00000000?00000000?00000000?00000000
[???11.415785]?afe0??00000000?00000000?00000000?00000000?00000000?00000000?00000000?00000000
[???11.423931]?b000??ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000
[???11.432076]?b020??ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000
[???11.440222]?b040??ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000
[???11.448368]?b060??ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000?ff000000
[???11.456514]?
[???11.456516]?LR:?0xc002d1d4:
[???11.460760]?d1d4??e50be09c?e3a0e004?e50b5098?e50be0a4?e28ee002?e50bc0a0?e58de000?eb0014ce
[???11.468905]?d1f4??e24bd020?e89da9f0?c051035c?c051036c?c054b344?c049c790?c049c7ba?00030001
[???11.477051]?d214??c049c7be?e1a0c00d?e92dd8f0?e24cb004?e24dd088?e201cb01?e1a04001?e201100f
[???11.485196]?d234??e59f3070?e181c32c?e3841102?e1a06000?e1a07002?e083520c?e1a0e00f?e793f20c
[???11.493342]?d254??e3500000?0a000011?e595100c?e1a02004?e1a03006?e59f0040?eb0d95c2?e595c008
[???11.501488]?d274??e595e004?e1a01007?e1a03004?e59f002c?e24b209c?e50bc094?e50be09c?e3a0c000
[???11.509633]?d294??e50b6090?e58dc000?e50bc098?eb0014a2?e24bd01c?e89da8f0?c05105fc?c049cc57
[???11.517779]?d2b4??c04b5b5c?e1a0c00d?e92dd8f0?e24cb004?e24dd088?e201cb01?e1a04001?e201100f
[???11.525925]?
[???11.525928]?SP:?0xee9d3ba8:


還是wince穩定啊。
暈ext3format?之后又來了一次不啟動
[????2.712437]?warning:?`rild'?uses?32-bit?capabilities?(legacy?support?in?use)
[????3.021029]?android_usb?gadget:?high?speed?config?#1:?Android?Composite
[???10.009783]?request_suspend_state:?wakeup?(3->0)?at?9480398418?(2010-01-01?12:00:09.518617168?UTC)
[???12.192678]?Unable?to?handle?kernel?paging?request?at?virtual?address?76453320
[???12.198419]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.205610]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.212802]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.219995]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.227187]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.234380]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.241572]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.248765]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.255957]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.263149]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d
[???12.270342]?Unable?to?handle?kernel?paging?request?at?virtual?address?300af87d

============解決方案1============

你這個錯誤像是LINUX下的典型錯誤啊！

轉載于:https://www.cnblogs.com/hugangyan86/p/4047406.html

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