Messages in this thread | | | Date | Thu, 6 Oct 2016 23:41:17 +0100 | From | Al Viro <> | Subject | Re: [PATCH] Revert "debugfs: ->d_parent is never NULL or negative" |
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On Thu, Oct 06, 2016 at 11:37:29PM +0100, Al Viro wrote:
> If you ever get NULL in ->d_parent of struct dentry instance, you are > practically certain to have a dangling pointer to memory that used to > contain a struct dentry at some point but got freed and reused since then.
... which is what happens in your case, apparently. ->stats is still pointing to a dentry that had just been freed and its memory reused.
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