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SubjectRe: kobject_init_and_add is easy to misuse
On Tue, Jun 02, 2020 at 02:51:10PM -0700, James Bottomley wrote:

> My first thought was "what? I got suckered into creating a patch",
> thanks ;-) But now I look, all the error paths do unwind back to the
> initial state, so kfree() on error looks to be completely correct.

It doesn't fully unwind if the kobject is put into a kset, then
another thread can get the kref during kset_find_obj() and kfree() won't
wait for the kref to go to 0. It must use put.

Jason

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