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authorWANG Cong <xiyou.wangcong@gmail.com>2015-10-01 15:21:08 -0700
committerDavid S. Miller <davem@davemloft.net>2015-10-05 06:35:51 -0700
commit0a15afd2eaceceff5be4c8b7166f01c1a68e9642 (patch)
treef4a4b5ea7cafde596e49a8f16bb5f18a120d05d6
parentnet: encx24j600_exit() can be static (diff)
downloadlinux-dev-0a15afd2eaceceff5be4c8b7166f01c1a68e9642.tar.xz
linux-dev-0a15afd2eaceceff5be4c8b7166f01c1a68e9642.zip
vrf: fix a kernel warning
This fixes: tried to remove device ip6gre0 from (null) ------------[ cut here ]------------ kernel BUG at net/core/dev.c:5219! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC CPU: 3 PID: 161 Comm: kworker/u8:2 Not tainted 4.3.0-rc2+ #1142 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Workqueue: netns cleanup_net task: ffff8800d784a9c0 ti: ffff8800d74a4000 task.ti: ffff8800d74a4000 RIP: 0010:[<ffffffff817f0797>] [<ffffffff817f0797>] __netdev_adjacent_dev_remove+0x40/0xec RSP: 0018:ffff8800d74a7a98 EFLAGS: 00010282 RAX: 000000000000002a RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88011adcf701 RSI: ffff88011adccbf8 RDI: ffff88011adccbf8 RBP: ffff8800d74a7ab8 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff81d190ff R11: 00000000ffffffff R12: ffff8800d599e7c0 R13: 0000000000000000 R14: ffff8800d599e890 R15: ffffffff82385e00 FS: 0000000000000000(0000) GS:ffff88011ac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007ffd6f003000 CR3: 000000000220c000 CR4: 00000000000006e0 Stack: 0000000000000000 ffff8800d599e7c0 0000000000000b00 ffff8800d599e8a0 ffff8800d74a7ad8 ffffffff817f0861 0000000000000000 ffff8800d599e7c0 ffff8800d74a7af8 ffffffff817f088f 0000000000000000 ffff8800d599e7c0 Call Trace: [<ffffffff817f0861>] __netdev_adjacent_dev_unlink+0x1e/0x35 [<ffffffff817f088f>] __netdev_adjacent_dev_unlink_neighbour+0x17/0x41 [<ffffffff817f56e6>] netdev_upper_dev_unlink+0x6c/0x13d [<ffffffff81674a3d>] vrf_del_slave+0x26/0x7d [<ffffffff81674ac3>] vrf_device_event+0x2f/0x34 [<ffffffff81098c40>] notifier_call_chain+0x75/0x9c [<ffffffff81098fa2>] raw_notifier_call_chain+0x14/0x16 [<ffffffff817ee129>] call_netdevice_notifiers_info+0x52/0x59 [<ffffffff817f179d>] call_netdevice_notifiers+0x13/0x15 [<ffffffff817f6f18>] rollback_registered_many+0x14f/0x24f [<ffffffff817f70f2>] unregister_netdevice_many+0x19/0x64 [<ffffffff819a2455>] ip6gre_exit_net+0x163/0x177 [<ffffffff817eb019>] ops_exit_list+0x44/0x55 [<ffffffff817ebcb7>] cleanup_net+0x193/0x226 [<ffffffff81091e1c>] process_one_work+0x26c/0x4d8 [<ffffffff81091d20>] ? process_one_work+0x170/0x4d8 [<ffffffff81092296>] worker_thread+0x1df/0x2c2 [<ffffffff810920b7>] ? process_scheduled_works+0x2f/0x2f [<ffffffff810920b7>] ? process_scheduled_works+0x2f/0x2f [<ffffffff81097a20>] kthread+0xd4/0xdc [<ffffffff810bc523>] ? trace_hardirqs_on_caller+0x17d/0x199 [<ffffffff8109794c>] ? __kthread_parkme+0x83/0x83 [<ffffffff81a5240f>] ret_from_fork+0x3f/0x70 [<ffffffff8109794c>] ? __kthread_parkme+0x83/0x83 Fixes: 93a7e7e837af ("net: Remove the now unused vrf_ptr") Cc: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/vrf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index 64f2ab663ffe..474396353e7f 100644
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -672,7 +672,7 @@ static int vrf_device_event(struct notifier_block *unused,
if (event == NETDEV_UNREGISTER) {
struct net_device *vrf_dev;
- if (netif_is_l3_master(dev))
+ if (!vrf_is_slave(dev) || netif_is_l3_master(dev))
goto out;
vrf_dev = netdev_master_upper_dev_get(dev);