> -----Original Message----- > From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx] > Sent: Friday, June 3, 2016 3:15 AM > To: devel@xxxxxxxxxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx; KY Srinivasan <kys@xxxxxxxxxxxxx>; Haiyang > Zhang <haiyangz@xxxxxxxxxxxxx> > Subject: [PATCH] Drivers: hv: fix infinite wait when channel open timeouts > > vmbus_teardown_gpadl() can result in infinite wait when it is called > on 5 second timeout in vmbus_open(). The issue is caused by the fact > that gpadl teardown operation won't ever succeed for an opened channel > and the timeout isn't always enough. Increase the timeout to 15 seconds > and add sending CHANNELMSG_CLOSECHANNEL message on timeout to make > sure > the channel is closed. > > The other possible solution for the issue would be to remove the timeout > in vmbus_open() making our wait infinite. I think removing the timeout in vmbus_open() maybe the safest solution since anything else is still racy. A timeout in vmbus_open() tells us nothing about the state of the channel. As a guest, we can trust the host to respond to our request. Regards, K. Y _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
