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SubjectRe: your mail
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> I have written a linux kernel module. The linux version is 2.2.14. 
> In this module I have declared an array of size 2048. If I use this array, the execution of this module function causes kernel to reboot. If I kmalloc() this array then execution of this module function doesnot cause any problem.
> Can you explain this behaviour?

Yes
--
Alan

[Oh wait you want to know why...]

Either

1. You are using it for DMA
2. You are putting it on the stack and causing a stack overflow

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