> -----Original Message----- > From: Greg KH [mailto:gre...@linuxfoundation.org] > Sent: Monday, September 18, 2017 7:00 AM > To: KY Srinivasan <k...@microsoft.com> > Cc: linux-kernel@vger.kernel.org; de...@linuxdriverproject.org; > o...@aepfle.de; a...@canonical.com; vkuzn...@redhat.com; > jasow...@redhat.com; leann.ogasaw...@canonical.com; > marcelo.ce...@canonical.com; Stephen Hemminger > <sthem...@microsoft.com>; Haiyang Zhang <haiya...@microsoft.com> > Subject: Re: [PATCH V2 1/4] vmbus: don't acquire the mutex in > vmbus_hvsock_device_unregister() > > On Sun, Sep 17, 2017 at 08:54:16PM -0700, k...@exchange.microsoft.com > wrote: > > From: Dexuan Cui <de...@microsoft.com> > > > > Due to commit 54a66265d675 ("Drivers: hv: vmbus: Fix rescind handling"), > > we need this patch to resolve the below deadlock: > > > > after we get the mutex in vmbus_hvsock_device_unregister() and call > > vmbus_device_unregister() -> device_unregister() -> ... -> > device_release() > > -> vmbus_device_release(), we'll get a deadlock, because > > vmbus_device_release() tries to get the same mutex. > > > > Signed-off-by: Dexuan Cui <de...@microsoft.com> > > Cc: K. Y. Srinivasan <k...@microsoft.com> > > Cc: Haiyang Zhang <haiya...@microsoft.com> > > Cc: Stephen Hemminger <sthem...@microsoft.com> > > Signed-off-by: K. Y. Srinivasan <k...@microsoft.com> > > As every one of these patches had questions from me, please break them > up into different series, one for 4.14-final, and one for 4.15-rc1.
Will do. Thanks, K. Y > > thanks, > > greg k-h
