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(parent: a7483ec) | patch
hv_netvsc: fix race in napi poll when rescheduling
authorStephen Hemminger <stephen@networkplumber.org>
Fri, 2 Mar 2018 21:49:05 +0000 (13:49 -0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 5 Mar 2018 03:18:20 +0000 (22:18 -0500)
commitd64e38ae690e3337db0d38d9b149a193a1646c4b
tree0aba67f10cda81d2040138605e0be56f2472ac79tree | snapshot
parenta7483ec0267c69b34e818738da60b392623da94bcommit | diff
hv_netvsc: fix race in napi poll when rescheduling

There is a race between napi_reschedule and re-enabling interrupts
which could lead to missed host interrrupts.  This occurs when
interrupts are re-enabled (hv_end_read) and vmbus irq callback
(netvsc_channel_cb) has already scheduled NAPI.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/hyperv/netvsc.c diff | blob | history
https://github.com/torvalds/linux.git