diff options
| author |   Benjamin Poirier <bpoirier@suse.com> | 2016-10-03 10:47:50 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-10-04 00:36:13 -0400 |
| commit | 277964e19e1416ca31301e113edb2580c81a8b66 (patch) | |
| tree | d89b12b8729bf74c2274f4e656ac8bc7720a385b /drivers/net/vmxnet3/vmxnet3_drv.c | |
| parent | Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue (diff) | |
| download | linux-dev-277964e19e1416ca31301e113edb2580c81a8b66.tar.xz linux-dev-277964e19e1416ca31301e113edb2580c81a8b66.zip | |
vmxnet3: Wake queue from reset work
vmxnet3_reset_work() expects tx queues to be stopped (via
vmxnet3_quiesce_dev -> netif_tx_disable). However, this races with the
netif_wake_queue() call in netif_tx_timeout() such that the driver's
start_xmit routine may be called unexpectedly, triggering one of the BUG_ON
in vmxnet3_map_pkt with a stack trace like this:
RIP: 0010:[<ffffffffa00cf4bc>] vmxnet3_map_pkt+0x3ac/0x4c0 [vmxnet3]
[<ffffffffa00cf7e0>] vmxnet3_tq_xmit+0x210/0x4e0 [vmxnet3]
[<ffffffff813ab144>] dev_hard_start_xmit+0x2e4/0x4c0
[<ffffffff813c956e>] sch_direct_xmit+0x17e/0x1e0
[<ffffffff813c96a7>] __qdisc_run+0xd7/0x130
[<ffffffff813a6a7a>] net_tx_action+0x10a/0x200
[<ffffffff810691df>] __do_softirq+0x11f/0x260
[<ffffffff81472fdc>] call_softirq+0x1c/0x30
[<ffffffff81004695>] do_softirq+0x65/0xa0
[<ffffffff81069b89>] local_bh_enable_ip+0x99/0xa0
[<ffffffffa031ff36>] destroy_conntrack+0x96/0x110 [nf_conntrack]
[<ffffffff813d65e2>] nf_conntrack_destroy+0x12/0x20
[<ffffffff8139c6d5>] skb_release_head_state+0xb5/0xf0
[<ffffffff8139d299>] skb_release_all+0x9/0x20
[<ffffffff8139cfe9>] __kfree_skb+0x9/0x90
[<ffffffffa00d0069>] vmxnet3_quiesce_dev+0x209/0x340 [vmxnet3]
[<ffffffffa00d020a>] vmxnet3_reset_work+0x6a/0xa0 [vmxnet3]
[<ffffffff8107d7cc>] process_one_work+0x16c/0x350
[<ffffffff810804fa>] worker_thread+0x17a/0x410
[<ffffffff810848c6>] kthread+0x96/0xa0
[<ffffffff81472ee4>] kernel_thread_helper+0x4/0x10
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vmxnet3/vmxnet3_drv.c')
| -rw-r--r-- | drivers/net/vmxnet3/vmxnet3_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 2fd93b4c759a..b5554f2ebee4 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -3186,7 +3186,6 @@ vmxnet3_tx_timeout(struct net_device *netdev) netdev_err(adapter->netdev, "tx hang\n"); schedule_work(&adapter->work); - netif_wake_queue(adapter->netdev); } @@ -3213,6 +3212,7 @@ vmxnet3_reset_work(struct work_struct *data) } rtnl_unlock(); + netif_wake_queue(adapter->netdev); clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); } |