tree ecf255b71c0c3709882a01f493caa6ed4554939a
parent 2daa0b5ec29630377c6d14b3d943e1c5c2a65577
author Arthur Kiyanovski <akiyano@amazon.com> 1539073289 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1541864576 -0800

net: ena: fix NULL dereference due to untimely napi initialization

[ Upstream commit 78a55d05def95144ca5fa9a64c49b2a0636a9866 ]

napi poll functions should be initialized before running request_irq(),
to handle a rare condition where there is a pending interrupt, causing
the ISR to fire immediately while the poll function wasn't set yet,
causing a NULL dereference.

Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>