From: Leon Romanovsky <leon@kernel.org>
To: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: jgg@ziepe.ca, dledford@redhat.com, linux-rdma@vger.kernel.org,
Mike Marciniszyn <mike.marciniszyn@intel.com>,
stable@vger.kernel.org, Kaike Wan <kaike.wan@intel.com>
Subject: Re: [PATCH for-rc or next 1/3] IB/hfi1: Do not destroy hfi1_wq when the device is shut down
Date: Tue, 12 May 2020 08:55:21 +0300 [thread overview]
Message-ID: <20200512055521.GA4814@unreal> (raw)
In-Reply-To: <20200512031315.189865.15477.stgit@awfm-01.aw.intel.com>
On Mon, May 11, 2020 at 11:13:15PM -0400, Dennis Dalessandro wrote:
> From: Kaike Wan <kaike.wan@intel.com>
>
> The workqueue hfi1_wq is destroyed in function shutdown_device(), which
> is called by either shutdown_one() or remove_one(). The function
> shutdown_one() is called when the kernel is rebooted while remove_one()
> is called when the hfi1 driver is unloaded. When the kernel is rebooted,
> hfi1_wq is destroyed while all qps are still active, leading to a
> kernel crash:
I was under impression that kernel reboot should follow same logic as
module removal. This is what graceful reboot will do anyway. Can you
please give me a link where I can read about difference in those flows?
Thanks
next prev parent reply other threads:[~2020-05-12 5:55 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-12 3:13 [PATCH for-rc or next 0/3] minor hfi and qib fixes Dennis Dalessandro
2020-05-12 3:13 ` [PATCH for-rc or next 1/3] IB/hfi1: Do not destroy hfi1_wq when the device is shut down Dennis Dalessandro
2020-05-12 5:55 ` Leon Romanovsky [this message]
2020-05-12 11:52 ` Wan, Kaike
2020-05-13 7:58 ` Leon Romanovsky
2020-05-13 13:31 ` Wan, Kaike
2020-05-20 0:26 ` Jason Gunthorpe
2020-05-20 11:08 ` Wan, Kaike
2020-05-12 3:13 ` [PATCH for-rc or next 2/3] IB/hfi1: Do not destroy link_wq " Dennis Dalessandro
2020-05-12 5:56 ` Leon Romanovsky
2020-05-12 12:12 ` Wan, Kaike
2020-05-12 3:13 ` [PATCH for-rc or next 3/3] IB/qib: Call kobject_put() when kobject_init_and_add() fails Dennis Dalessandro
2020-05-12 6:02 ` Leon Romanovsky
2020-05-20 0:00 ` Jason Gunthorpe
2020-05-20 13:49 ` Dennis Dalessandro
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