Re: [PATCH] kobject: fix double kobject_put in kobject_unregister()

From: Russell King
Date: Wed Nov 10 2004 - 17:31:51 EST

On Wed, Nov 10, 2004 at 02:19:23PM -0800, Keshavamurthy Anil S wrote:
> Hi Greg,
> This patch fixes the problem where in kobject resources were getting
> freed when those kobject were still in use due to double kobject_put()
> getting called in the kobject_unregister() code path.

Isn't it intended that, after an sysfs/kobject/device object is
unregistered that the thread doing the unregistering must not
dereference the memory associated with that object?

IOW, the sequence:

register (refcount >= 2 after this completes)

will automatically free the object once the last user has gone.

Russell King
Linux kernel 2.6 ARM Linux -
maintainer of: 2.6 PCMCIA -
2.6 Serial core
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