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Drivers: hv: vmbus: Fix a rescind issue

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The current rescind processing code will not correctly handle
the case where the host immediately rescinds a channel that has
been offerred. In this case, we could be blocked in the open call and
since the channel is rescinded, the host will not respond and we could
be blocked forever in the vmbus open call.i Fix this problem.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2017-11-14 06:53:33 -07:00 • committed by Greg Kroah-Hartman
parent fb2c445277
commit 7fa32e5ec2
3 changed files with 13 additions and 5 deletions
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1
include/linux/hyperv.h
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@ -708,6 +708,7 @@ struct vmbus_channel {
u8 monitor_bit;
bool rescind; /* got rescind msg */
struct completion rescind_event;
u32 ringbuffer_gpadlhandle;