Clearing of memory allocated by using malloc/kmalloc/vmalloc

manikumar086 · 08-08-2011, 03:55 AM

Hi,

Let's analyse this While registering a Char deriver to kernel think that we had allocated memory using any of malloc/kmalloc/vmalloc.

If we forgot to Free that allocated memory while unregistering, will that memory be allocated aside or kernel clears it...?

smallpond · 08-08-2011, 01:51 PM

Quote:

Originally Posted by manikumar086

Hi,

Let's analyse this While registering a Char deriver to kernel think that we had allocated memory using any of malloc/kmalloc/vmalloc.

If we forgot to Free that allocated memory while unregistering, will that memory be allocated aside or kernel clears it...?

Any memory not freed at exit is lost -- its a memory leak. See ch. 2 of LDD
http://lwn.net/Kernel/LDD3/

manikumar086 · 08-08-2011, 11:46 PM

Thank you SMALLPOND...