Hi. In future replies, please CC the list. Does it panic in during the kmalloc, or afterwards? Are you checking if 'newBun' is NULL? I may be missing something obvious in that code, but unless you are out of memory or with some past corruption, I don't think that should panic the kernel. In any case, the panic trace should help. Cheers. --- João Eduardo Luís gpg key: 477C26E5 from pool.keyserver.eu On Jun 3, 2011, at 7:50 PM, Amirali Shambayati wrote:

thanks for your guidance. I just want to allocate memory for a struct. I use this:

struct bundle* newBun; newBun = kmalloc(sizeof(*newBun), GFP_KERNEL);

but it goes to panic state.

2011/6/3 João Eduardo Luís <jecluis@gmail.com> Hi.

From [1] I'm lead to believe the only difference between the regular kmalloc() arguments and those of kmalloc_node() is the one specifying which node you want to allocate the memory on.

Aside from the third argument, which seems to be related with NUMA (with which I never worked on kernel-context), I would suggest you to read [2].

If on the other hand you only want to allocate memory locally, maybe you should use kmalloc() or one of its variants [3].

Cheers.

[1] - http://www.kernel.org/doc/htmldocs/kernel-api/API-kmalloc-node.html [2] - http://www.kernel.org/doc/htmldocs/kernel-api/API-kcalloc.html [3] - http://www.kernel.org/doc/htmldocs/kernel-api/mm.html#id408507 --- João Eduardo Luís gpg key: 477C26E5 from pool.keyserver.eu

On Jun 3, 2011, at 7:07 PM, Amirali Shambayati wrote:

...

Hello all,

I just want to allocate memory for a struct instantiation. Would anyone guide me what arguments I should pass to "kmalloc_node"? Regards, -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran

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-- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran