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From: "Wan, Kaike" <kaike.wan@intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: "Dalessandro, Dennis" <dennis.dalessandro@intel.com>,
	"dledford@redhat.com" <dledford@redhat.com>,
	"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
	"Marciniszyn, Mike" <mike.marciniszyn@intel.com>,
	"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: RE: [PATCH for-rc 1/2] IB/hfi1: Fix memory leaks in sysfs registration and unregistration
Date: Thu, 26 Mar 2020 23:30:55 +0000
Message-ID: <MW3PR11MB4665CC64F56087B2AA5A726AF4CF0@MW3PR11MB4665.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20200326223653.GQ20941@ziepe.ca>



> -----Original Message-----
> From: Jason Gunthorpe <jgg@ziepe.ca>
> Sent: Thursday, March 26, 2020 6:37 PM
> To: Wan, Kaike <kaike.wan@intel.com>
> Cc: Dalessandro, Dennis <dennis.dalessandro@intel.com>;
> dledford@redhat.com; linux-rdma@vger.kernel.org; Marciniszyn, Mike
> <mike.marciniszyn@intel.com>; stable@vger.kernel.org
> Subject: Re: [PATCH for-rc 1/2] IB/hfi1: Fix memory leaks in sysfs registration
> and unregistration
> 
> On Thu, Mar 26, 2020 at 10:24:51PM +0000, Wan, Kaike wrote:
> 
> > > To see if there is an issue here delete the kobject_del and
> > > kobject_put entirely to leave a dangling sysfs during registration
> > > and see if ib device unregistration explodes.
> 
> > I tried a patch wherein the function hfi1_verbs_unregister_sysfs() is
> > never called at all and when unloading the driver the ib device
> > un-registration went through smoothly(no error, the
> > /sys/class/infiniband/hfi1_0 directory gone). Only kmemleak complaints
> > were observed.
> 
> Then perhaps there is nothing to worry about and the patches are fine
>
Then I don't have to re-spin the patches?

Kaike

  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200326163619.21129.13002.stgit@awfm-01.aw.intel.com>
2020-03-26 16:38 ` Dennis Dalessandro
2020-03-26 17:25   ` Jason Gunthorpe
2020-03-26 19:09     ` Wan, Kaike
2020-03-26 19:42       ` Jason Gunthorpe
2020-03-26 22:24         ` Wan, Kaike
2020-03-26 22:36           ` Jason Gunthorpe
2020-03-26 23:30             ` Wan, Kaike [this message]
2020-03-26 16:38 ` [PATCH for-rc 2/2] IB/hfi1: Call kobject_put() when kobject_init_and_add() fails Dennis Dalessandro
2020-03-26 16:40   ` Dennis Dalessandro

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