netdev - [PATCH net 0/4] net-sysfs: fix race conditions in the xps code

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Message-Id: <20201217162521.1134496-1-atenart@kernel.org>
Date:   Thu, 17 Dec 2020 17:25:17 +0100
From:   Antoine Tenart <atenart@...nel.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Antoine Tenart <atenart@...nel.org>, netdev@...r.kernel.org,
        pabeni@...hat.com
Subject: [PATCH net 0/4] net-sysfs: fix race conditions in the xps code

Hello all,

This series fixes two similar issues, one with xps_cpus and one with
xps_rxqs, where a race condition can occur between accesses to the
xps_cpus and xps_rxqs maps and the update of dev->num_tc. Those races
lead to accesses outside of the map and oops being triggered. An
explanation is given in each of the commit logs.

Thanks!
Antoine

Antoine Tenart (4):
  net-sysfs: take the rtnl lock when storing xps_cpus
  net-sysfs: take the rtnl lock when accessing xps_cpus_map and num_tc
  net-sysfs: take the rtnl lock when storing xps_rxqs
  net-sysfs: take the rtnl lock when accessing xps_rxqs_map and num_tc

 net/core/net-sysfs.c | 65 ++++++++++++++++++++++++++++++++++++--------
 1 file changed, 53 insertions(+), 12 deletions(-)

-- 
2.29.2