diff options
| author | Jeremy Linton <jeremy.linton@arm.com> | 2016-11-17 09:14:25 -0600 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2017-02-10 11:03:57 +0100 |
| commit | c9dade91140f892d059f66bd9d8c4c566366ea3f (patch) | |
| tree | 15a57b42ec752f8c3a17306e5b8096c84b3209ae /drivers | |
| parent | 85801b799e121eefd31eb8a6bc2eb4064220e687 (diff) | |
net: sky2: Fix shutdown crash
commit 06ba3b2133dc203e1e9bc36cee7f0839b79a9e8b upstream.
The sky2 frequently crashes during machine shutdown with:
sky2_get_stats+0x60/0x3d8 [sky2]
dev_get_stats+0x68/0xd8
rtnl_fill_stats+0x54/0x140
rtnl_fill_ifinfo+0x46c/0xc68
rtmsg_ifinfo_build_skb+0x7c/0xf0
rtmsg_ifinfo.part.22+0x3c/0x70
rtmsg_ifinfo+0x50/0x5c
netdev_state_change+0x4c/0x58
linkwatch_do_dev+0x50/0x88
__linkwatch_run_queue+0x104/0x1a4
linkwatch_event+0x30/0x3c
process_one_work+0x140/0x3e0
worker_thread+0x60/0x44c
kthread+0xdc/0xf0
ret_from_fork+0x10/0x50
This is caused by the sky2 being called after it has been shutdown.
A previous thread about this can be found here:
https://lkml.org/lkml/2016/4/12/410
An alternative fix is to assure that IFF_UP gets cleared by
calling dev_close() during shutdown. This is similar to what the
bnx2/tg3/xgene and maybe others are doing to assure that the driver
isn't being called following _shutdown().
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/marvell/sky2.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index d175bbd3ffd3..4ac9dfd3f127 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -5197,6 +5197,19 @@ static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume); static void sky2_shutdown(struct pci_dev *pdev) { + struct sky2_hw *hw = pci_get_drvdata(pdev); + int port; + + for (port = 0; port < hw->ports; port++) { + struct net_device *ndev = hw->dev[port]; + + rtnl_lock(); + if (netif_running(ndev)) { + dev_close(ndev); + netif_device_detach(ndev); + } + rtnl_unlock(); + } sky2_suspend(&pdev->dev); pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev)); pci_set_power_state(pdev, PCI_D3hot); |