Messages in this thread | | | Subject | Re: [PATCH] Revert "debugfs: ->d_parent is never NULL or negative" | From | Sinan Kaya <> | Date | Thu, 6 Oct 2016 19:21:33 -0400 |
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On 10/6/2016 6:41 PM, Al Viro wrote: > 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. >
Thanks for explaining the behavior. I posted the change a minute ago and forgot to include you.
dmaengine: qcom_hidma: remove useless debugfs file removal
I have a very similar problem with sysfs now. It looks like the new kernel is more assertive than the older ones.
I'll post the sysfs change in a minute.
-- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
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