Re: [PATCH] Revert "debugfs: ->d_parent is never NULL or negative"

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.
--
To unsubscribe from this list: send the line "unsubscribe dmaengine" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux PCI]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux