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Michael Kelley 2b557a0612 Drivers: hv: vmbus: Add timeout to vmbus_wait_for_unload

[ Upstream commit 911e1987efc8f3e6445955fbae7f54b428b92bd3 ]

vmbus_wait_for_unload() looks for a CHANNELMSG_UNLOAD_RESPONSE message
coming from Hyper-V.  But if the message isn't found for some reason,
the panic path gets hung forever.  Add a timeout of 10 seconds to prevent
this.

Fixes: 415719160de3 ("Drivers: hv: vmbus: avoid scheduling in interrupt context in vmbus_initiate_unload()")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/1600026449-23651-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-09-23 08:46:15 +02:00

channel_mgmt.c

Drivers: hv: vmbus: Add timeout to vmbus_wait_for_unload

2020-09-23 08:46:15 +02:00

channel.c

Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl()

2018-12-05 19:42:41 +01:00

connection.c

Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()

2017-03-12 06:41:47 +01:00

hv_balloon.c

Drivers: hv: balloon: Use available memory value in pressure report