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datapath: stt: Do not access stt_dev socket in lookup.
author
Pravin B Shelar
<pshelar@nicira.com>
Sun, 20 Dec 2015 03:19:22 +0000
(19:19 -0800)
committer
Pravin B Shelar
<pshelar@nicira.com>
Sun, 20 Dec 2015 21:20:15 +0000
(13:20 -0800)
STT device is added to the device list at device create time. and
the dev socket is initialized when dev is UP. So avoid accessing
stt socket while searching a device.
---8<---
IP: [<
ffffffffc0e731fd
>] nf_ip_hook+0xfd/0x180 [openvswitch]
Oops: 0000 [#1] PREEMPT SMP
Hardware name: VMware, Inc. VMware Virtual Platform/440BX
RIP: 0010:[<
ffffffffc0e731fd
>] [<
ffffffffc0e731fd
>] nf_ip_hook+0xfd/0x180 [openvswitch]
RSP: 0018:
ffff88043fd03cd0
EFLAGS:
00010206
RAX:
0000000000000000
RBX:
ffff8801008e2200
RCX:
0000000000000034
RDX:
0000000000000110
RSI:
ffff8801008e2200
RDI:
ffff8801533a3880
RBP:
ffff88043fd03d00
R08:
ffffffff90646d10
R09:
ffff880164b27000
R10:
0000000000000003
R11:
ffff880155eb9dd8
R12:
0000000000000028
R13:
ffff8802283dc580
R14:
00000000000076b4
R15:
ffff880013b20000
FS:
00007ff5ba73b700
(0000) GS:
ffff88043fd00000
(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000020
CR3:
000000037ff96000
CR4:
00000000000007e0
Stack:
ffff8801533a3890
ffff88043fd03d80
ffffffff90646d10
0000000000000000
ffff880164b27000
ffff8801008e2200
ffff88043fd03d48
ffffffff9064050a
ffffffff90d0f930
ffffffffc0e7ef80
0000000000000001
ffff8801008e2200
Call Trace:
<IRQ>
[<
ffffffff9064050a
>] nf_iterate+0x9a/0xb0
[<
ffffffff9064059c
>] nf_hook_slow+0x7c/0x120
[<
ffffffff906470f3
>] ip_local_deliver+0x73/0x80
[<
ffffffff90646a3d
>] ip_rcv_finish+0x7d/0x350
[<
ffffffff90647398
>] ip_rcv+0x298/0x3d0
[<
ffffffff9060fc56
>] __netif_receive_skb_core+0x696/0x880
[<
ffffffff9060fe58
>] __netif_receive_skb+0x18/0x60
[<
ffffffff90610b3e
>] process_backlog+0xae/0x180
[<
ffffffff906102c2
>] net_rx_action+0x152/0x270
[<
ffffffff9006d625
>] __do_softirq+0xf5/0x320
[<
ffffffff9071d15c
>] do_softirq_own_stack+0x1c/0x30
Reported-by: Joe Stringer <joe@ovn.org>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Tested-by: Joe Stringer <joe@ovn.org>
No differences found