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linux/net/openvswitch
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Tonghao Zhang 27de77cec9 net: openvswitch: ovs_ct_exit to be done under ovs_lock 
syzbot wrote:
| =============================
| WARNING: suspicious RCU usage
| 5.7.0-rc1+ #45 Not tainted
| -----------------------------
| net/openvswitch/conntrack.c:1898 RCU-list traversed in non-reader section!!
|
| other info that might help us debug this:
| rcu_scheduler_active = 2, debug_locks = 1
| ...
|
| stack backtrace:
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
| Workqueue: netns cleanup_net
| Call Trace:
| ...
| ovs_ct_exit
| ovs_exit_net
| ops_exit_list.isra.7
| cleanup_net
| process_one_work
| worker_thread

To avoid that warning, invoke the ovs_ct_exit under ovs_lock and add
lockdep_ovsl_is_held as optional lockdep expression.

Link: https://lore.kernel.org/lkml/000000000000e642a905a0cbee6e@google.com
Fixes: 11efd5cb04 ("openvswitch: Support conntrack zone limit")
Cc: Pravin B Shelar <pshelar@ovn.org>
Cc: Yi-Hung Wei <yihung.wei@gmail.com>
Reported-by: syzbot+7ef50afd3a211f879112@syzkaller.appspotmail.com
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-20 10:53:54 -07:00
..
actions.c openvswitch: add TTL decrement action 2020-02-16 19:34:44 -08:00
conntrack.c net: openvswitch: ovs_ct_exit to be done under ovs_lock 2020-04-20 10:53:54 -07:00
conntrack.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
datapath.c net: openvswitch: ovs_ct_exit to be done under ovs_lock 2020-04-20 10:53:54 -07:00
datapath.h net: openvswitch: add hash info to upcall 2019-11-14 17:29:46 -08:00
dp_notify.c net: openvswitch: use netif_ovs_is_port() instead of opencode 2019-07-08 15:53:25 -07:00
flow_netlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-21 13:39:34 -08:00
flow_netlink.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00
flow_table.c net: openvswitch: use hlist_for_each_entry_rcu instead of hlist_for_each_entry 2020-04-02 17:48:12 -07:00
flow_table.h net: openvswitch: convert mask list in mask array 2019-11-03 17:18:03 -08:00
flow.c Change in Openvswitch to support MPLS label depth of 3 in ingress direction 2019-11-05 18:02:29 -08:00
flow.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile openvswitch: Add meter infrastructure 2017-11-13 10:37:07 +09:00
meter.c meter.c: Use built-in RCU list checking 2020-02-18 12:46:26 -08:00
meter.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
vport-geneve.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vport-gre.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00
vport-internal_dev.c net: openvswitch: free vport unless register_netdevice() succeeds 2019-10-22 14:45:08 -07:00
vport-internal_dev.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00
vport-netdev.c net: openvswitch: use netif_ovs_is_port() instead of opencode 2019-07-08 15:53:25 -07:00
vport-netdev.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00
vport-vxlan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00
vport.c vport.c: Use built-in RCU list checking 2020-02-18 12:46:27 -08:00
vport.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 269 2019-06-05 17:30:29 +02:00