Hi all,
I got this new lockdep splat after booting rc6 + tip/master this
morning. I haven't seen it before so it must be new in rc6 which should
be easy to pinpoint... or maybe there's already a fix queued somewhere. :)
[ 10.033876] NET: Registered protocol family 10
[ 11.510454] r8169 0000:02:00.0 eth0: link down
[ 11.510566] r8169 0000:02:00.0 eth0: link down
[ 11.522573] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 13.024024] r8169 0000:02:00.0 eth0: link up
[ 13.031636] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 14.024289]
[ 14.028860] =========================================================
[ 14.038419] [ INFO: possible irq lock inversion dependency detected ]
[ 14.047992] 3.16.0-rc6+ #1 Not tainted
[ 14.054806] ---------------------------------------------------------
[ 14.064269] swapper/2/0 just changed the state of lock:
[ 14.072523] (&tb->tb6_lock){++--..}, at: [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 14.083983] but this lock took another, SOFTIRQ-READ-unsafe lock in the past:
[ 14.094142] (nl_table_lock){.+.?..}
[ 14.094142]
[ 14.094142] and interrupts could create inverse lock ordering between them.
[ 14.094142]
[ 14.115623]
[ 14.115623] other info that might help us debug this:
[ 14.128001] Possible interrupt unsafe locking scenario:
[ 14.128001]
[ 14.140632] CPU0 CPU1
[ 14.148080] ---- ----
[ 14.155494] lock(nl_table_lock);
[ 14.161756] local_irq_disable();
[ 14.170487] lock(&tb->tb6_lock);
[ 14.179272] lock(nl_table_lock);
[ 14.188002] <Interrupt>
[ 14.193397] lock(&tb->tb6_lock);
[ 14.199835]
[ 14.199835] *** DEADLOCK ***
[ 14.199835]
[ 14.214025] 1 lock held by swapper/2/0:
[ 14.220632] #0: (rcu_read_lock){......}, at: [<ffffffff81551e15>] __netif_receive_skb_core+0x65/0xc00
[ 14.232984]
[ 14.232984] the shortest dependencies between 2nd lock and 1st lock:
[ 14.246511] -> (nl_table_lock){.+.?..} ops: 4153 {
[ 14.254361] HARDIRQ-ON-R at:
[ 14.260442] [<ffffffff81099b2c>] __lock_acquire+0x39c/0x2230
[ 14.270889] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 14.280886] [<ffffffff8161f7d4>] _raw_read_lock+0x44/0x80
[ 14.291002] [<ffffffff81582422>] netlink_broadcast_filtered+0x42/0x360
[ 14.302244] [<ffffffff8158275d>] netlink_broadcast+0x1d/0x20
[ 14.312580] [<ffffffff815851ad>] nlmsg_notify+0xbd/0xd0
[ 14.322462] [<ffffffff8156626c>] rtmsg_ifinfo+0xdc/0x100
[ 14.332448] [<ffffffff81558145>] register_netdevice+0x495/0x570
[ 14.343009] [<ffffffff8155823f>] register_netdev+0x1f/0x30
[ 14.353107] [<ffffffff81bc4e5a>] loopback_net_init+0x3b/0x7f
[ 14.363390] [<ffffffff81549f9f>] ops_init.constprop.8+0xaf/0x180
[ 14.374001] [<ffffffff8154a0dc>] register_pernet_operations.isra.5+0x6c/0xb0
[ 14.385668] [<ffffffff8154a187>] register_pernet_device+0x27/0x70
[ 14.396421] [<ffffffff81bd060e>] net_dev_init+0x18c/0x1e8
[ 14.406439] [<ffffffff810002f0>] do_one_initcall+0xa0/0x1f0
[ 14.416660] [<ffffffff81b90f5f>] kernel_init_freeable+0x114/0x19c
[ 14.427385] [<ffffffff816143ae>] kernel_init+0xe/0xe0
[ 14.437061] [<ffffffff8162052c>] ret_from_fork+0x7c/0xb0
[ 14.446978] IN-SOFTIRQ-R at:
[ 14.452894] [<ffffffff8109a0b9>] __lock_acquire+0x929/0x2230
[ 14.463166] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 14.473085] [<ffffffff8161f7d4>] _raw_read_lock+0x44/0x80
[ 14.483106] [<ffffffff81582422>] netlink_broadcast_filtered+0x42/0x360
[ 14.494290] [<ffffffff8158275d>] netlink_broadcast+0x1d/0x20
[ 14.504553] [<ffffffff815851ad>] nlmsg_notify+0xbd/0xd0
[ 14.514385] [<ffffffff8156491b>] rtnl_notify+0x3b/0x40
[ 14.524087] [<ffffffff8155d827>] __neigh_notify+0xb7/0xe0
[ 14.534057] [<ffffffff81563044>] neigh_update+0x444/0x950
[ 14.544043] [<ffffffff815caa1d>] arp_process+0x30d/0x820
[ 14.553910] [<ffffffff815cb04b>] arp_rcv+0x10b/0x140
[ 14.563412] [<ffffffff81551ffc>] __netif_receive_skb_core+0x24c/0xc00
[ 14.574412] [<ffffffff815529cb>] __netif_receive_skb+0x1b/0x70
[ 14.584771] [<ffffffff81552a4d>] netif_receive_skb_internal+0x2d/0x1e0
[ 14.595832] [<ffffffff815538e0>] napi_gro_receive+0x90/0x1b0
[ 14.606029] [<ffffffffa00036cb>] rtl8169_poll+0x30b/0x640 [r8169]
[ 14.616675] [<ffffffff81554742>] net_rx_action+0x132/0x310
[ 14.626757] [<ffffffff8105418d>] __do_softirq+0xed/0x4d0
[ 14.636621] [<ffffffff810546fe>] irq_exit+0x8e/0xb0
[ 14.646038] [<ffffffff81622fe1>] do_IRQ+0x71/0x110
[ 14.655368] [<ffffffff8162122f>] ret_from_intr+0x0/0x13
[ 14.665093] [<ffffffff814b8b97>] cpuidle_enter+0x17/0x20
[ 14.674883] [<ffffffff8108ffe7>] cpu_startup_entry+0x287/0x7c0
[ 14.685180] [<ffffffff81035850>] start_secondary+0x210/0x250
[ 14.695290] SOFTIRQ-ON-R at:
[ 14.701042] [<ffffffff8109a115>] __lock_acquire+0x985/0x2230
[ 14.711157] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 14.720920] [<ffffffff8161f7d4>] _raw_read_lock+0x44/0x80
[ 14.730742] [<ffffffff81582422>] netlink_broadcast_filtered+0x42/0x360
[ 14.741691] [<ffffffff8158275d>] netlink_broadcast+0x1d/0x20
[ 14.751731] [<ffffffff815851ad>] nlmsg_notify+0xbd/0xd0
[ 14.761310] [<ffffffff8156626c>] rtmsg_ifinfo+0xdc/0x100
[ 14.770969] [<ffffffff81558145>] register_netdevice+0x495/0x570
[ 14.781224] [<ffffffff8155823f>] register_netdev+0x1f/0x30
[ 14.791022] [<ffffffff81bc4e5a>] loopback_net_init+0x3b/0x7f
[ 14.801016] [<ffffffff81549f9f>] ops_init.constprop.8+0xaf/0x180
[ 14.811359] [<ffffffff8154a0dc>] register_pernet_operations.isra.5+0x6c/0xb0
[ 14.822731] [<ffffffff8154a187>] register_pernet_device+0x27/0x70
[ 14.833162] [<ffffffff81bd060e>] net_dev_init+0x18c/0x1e8
[ 14.842907] [<ffffffff810002f0>] do_one_initcall+0xa0/0x1f0
[ 14.852842] [<ffffffff81b90f5f>] kernel_init_freeable+0x114/0x19c
[ 14.863305] [<ffffffff816143ae>] kernel_init+0xe/0xe0
[ 14.872712] [<ffffffff8162052c>] ret_from_fork+0x7c/0xb0
[ 14.882387] INITIAL USE at:
[ 14.887992] [<ffffffff81099bd3>] __lock_acquire+0x443/0x2230
[ 14.898013] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 14.907664] [<ffffffff8161fc87>] _raw_write_lock_irq+0x47/0x80
[ 14.917850] [<ffffffff81583b0a>] netlink_table_grab+0x1a/0x110
[ 14.928054] [<ffffffff81bd1944>] netlink_proto_init+0x161/0x1e0
[ 14.938379] [<ffffffff810002f0>] do_one_initcall+0xa0/0x1f0
[ 14.948354] [<ffffffff81b90f5f>] kernel_init_freeable+0x114/0x19c
[ 14.958803] [<ffffffff816143ae>] kernel_init+0xe/0xe0
[ 14.968157] [<ffffffff8162052c>] ret_from_fork+0x7c/0xb0
[ 14.977763] }
[ 14.981921] ... key at: [<ffffffff81991198>] nl_table_lock+0x18/0x80
[ 14.991364] ... acquired at:
[ 14.996836] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 15.004876] [<ffffffff8161f7d4>] _raw_read_lock+0x44/0x80
[ 15.012999] [<ffffffff81582422>] netlink_broadcast_filtered+0x42/0x360
[ 15.022260] [<ffffffff8158275d>] netlink_broadcast+0x1d/0x20
[ 15.030645] [<ffffffff815851ad>] nlmsg_notify+0xbd/0xd0
[ 15.038596] [<ffffffff8156491b>] rtnl_notify+0x3b/0x40
[ 15.046462] [<ffffffffa02be934>] inet6_rt_notify+0xe4/0x160 [ipv6]
[ 15.055393] [<ffffffffa02bffc7>] fib6_add+0x577/0xaa0 [ipv6]
[ 15.063802] [<ffffffffa02bba9c>] ip6_ins_rt+0x5c/0x80 [ipv6]
[ 15.072240] [<ffffffffa02b40c5>] __ipv6_ifa_notify+0x335/0x340 [ipv6]
[ 15.081439] [<ffffffffa02b414c>] ipv6_ifa_notify+0x7c/0x130 [ipv6]
[ 15.090369] [<ffffffffa02b59c4>] add_addr+0x64/0x90 [ipv6]
[ 15.098608] [<ffffffffa02b7669>] addrconf_notify+0x589/0xb50 [ipv6]
[ 15.107642] [<ffffffff81074305>] notifier_call_chain+0x55/0x110
[ 15.116311] [<ffffffff810743e6>] raw_notifier_call_chain+0x16/0x20
[ 15.125242] [<ffffffff8154d280>] call_netdevice_notifiers_info+0x40/0x70
[ 15.134709] [<ffffffff81557140>] __dev_notify_flags+0x40/0xc0
[ 15.143224] [<ffffffff8155794a>] dev_change_flags+0x5a/0x70
[ 15.151548] [<ffffffff81567991>] do_setlink+0x3f1/0xb50
[ 15.159492] [<ffffffff815687ed>] rtnl_newlink+0x5bd/0x770
[ 15.167634] [<ffffffff815672f8>] rtnetlink_rcv_msg+0x98/0x250
[ 15.176105] [<ffffffff81585801>] netlink_rcv_skb+0xa1/0xc0
[ 15.184309] [<ffffffff8156724a>] rtnetlink_rcv+0x2a/0x40
[ 15.192345] [<ffffffff81585056>] netlink_unicast+0x146/0x1e0
[ 15.200730] [<ffffffff81585508>] netlink_sendmsg+0x348/0x440
[ 15.209107] [<ffffffff81534693>] sock_sendmsg+0x73/0x90
[ 15.217051] [<ffffffff81535548>] ___sys_sendmsg+0x408/0x420
[ 15.225348] [<ffffffff81538589>] __sys_sendmsg+0x49/0x80
[ 15.233387] [<ffffffff815385d2>] SyS_sendmsg+0x12/0x20
[ 15.241250] [<ffffffff816205d6>] system_call_fastpath+0x1a/0x1f
[ 15.249896]
[ 15.253820] -> (&tb->tb6_lock){++--..} ops: 6 {
[ 15.260915] HARDIRQ-ON-W at:
[ 15.266511] [<ffffffff8109a0e2>] __lock_acquire+0x952/0x2230
[ 15.276411] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 15.285947] [<ffffffff8161fd05>] _raw_write_lock_bh+0x45/0x80
[ 15.295926] [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 15.305827] [<ffffffffa02b40c5>] __ipv6_ifa_notify+0x335/0x340 [ipv6]
[ 15.316524] [<ffffffffa02b414c>] ipv6_ifa_notify+0x7c/0x130 [ipv6]
[ 15.326970] [<ffffffffa02b59c4>] add_addr+0x64/0x90 [ipv6]
[ 15.336733] [<ffffffffa02b7669>] addrconf_notify+0x589/0xb50 [ipv6]
[ 15.347273] [<ffffffff81074305>] notifier_call_chain+0x55/0x110
[ 15.357459] [<ffffffff810743e6>] raw_notifier_call_chain+0x16/0x20
[ 15.367897] [<ffffffff8154d280>] call_netdevice_notifiers_info+0x40/0x70
[ 15.378847] [<ffffffff81557140>] __dev_notify_flags+0x40/0xc0
[ 15.388841] [<ffffffff8155794a>] dev_change_flags+0x5a/0x70
[ 15.398660] [<ffffffff81567991>] do_setlink+0x3f1/0xb50
[ 15.408178] [<ffffffff815687ed>] rtnl_newlink+0x5bd/0x770
[ 15.417817] [<ffffffff815672f8>] rtnetlink_rcv_msg+0x98/0x250
[ 15.427813] [<ffffffff81585801>] netlink_rcv_skb+0xa1/0xc0
[ 15.437549] [<ffffffff8156724a>] rtnetlink_rcv+0x2a/0x40
[ 15.447120] [<ffffffff81585056>] netlink_unicast+0x146/0x1e0
[ 15.457036] [<ffffffff81585508>] netlink_sendmsg+0x348/0x440
[ 15.466990] [<ffffffff81534693>] sock_sendmsg+0x73/0x90
[ 15.476458] [<ffffffff81535548>] ___sys_sendmsg+0x408/0x420
[ 15.486263] [<ffffffff81538589>] __sys_sendmsg+0x49/0x80
[ 15.495808] [<ffffffff815385d2>] SyS_sendmsg+0x12/0x20
[ 15.505172] [<ffffffff816205d6>] system_call_fastpath+0x1a/0x1f
[ 15.515334] HARDIRQ-ON-R at:
[ 15.520963] [<ffffffff81099b2c>] __lock_acquire+0x39c/0x2230
[ 15.530908] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 15.540485] [<ffffffff8161f978>] _raw_read_lock_bh+0x48/0x80
[ 15.550405] [<ffffffffa02bbb27>] ip6_pol_route.isra.41+0x67/0x3f0 [ipv6]
[ 15.561371] [<ffffffffa02bbf0a>] ip6_pol_route_output+0x2a/0x30 [ipv6]
[ 15.572165] [<ffffffffa02bfa0a>] fib6_rule_lookup+0x1a/0x20 [ipv6]
[ 15.582601] [<ffffffffa02b9e94>] ip6_route_output+0x74/0xc0 [ipv6]
[ 15.593031] [<ffffffffa02a83cf>] ip6_dst_lookup_tail+0xcf/0xf0 [ipv6]
[ 15.603736] [<ffffffffa02a8445>] ip6_dst_lookup_flow+0x35/0x90 [ipv6]
[ 15.614415] [<ffffffffa02de809>] ip6_datagram_connect+0x169/0x4b0 [ipv6]
[ 15.625375] [<ffffffff815d3b45>] inet_dgram_connect+0x45/0xa0
[ 15.635360] [<ffffffff81537dea>] SyS_connect+0x8a/0xe0
[ 15.644741] [<ffffffff816205d6>] system_call_fastpath+0x1a/0x1f
[ 15.654912] IN-SOFTIRQ-W at:
[ 15.660543] [<ffffffff8109a0b9>] __lock_acquire+0x929/0x2230
[ 15.670451] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 15.680030] [<ffffffff8161fd05>] _raw_write_lock_bh+0x45/0x80
[ 15.690035] [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 15.699953] [<ffffffffa02bbda4>] ip6_pol_route.isra.41+0x2e4/0x3f0 [ipv6]
[ 15.711016] [<ffffffffa02bbedb>] ip6_pol_route_input+0x2b/0x30 [ipv6]
[ 15.721730] [<ffffffffa02bfa0a>] fib6_rule_lookup+0x1a/0x20 [ipv6]
[ 15.732185] [<ffffffffa02bba2c>] ip6_route_input_lookup.isra.39.constprop.46+0x4c/0x60 [ipv6]
[ 15.745012] [<ffffffffa02bbfab>] ip6_route_input+0x9b/0xc0 [ipv6]
[ 15.755416] [<ffffffffa02ac740>] ip6_rcv_finish+0x170/0x2a0 [ipv6]
[ 15.765897] [<ffffffffa02ad565>] ipv6_rcv+0x4f5/0x8b0 [ipv6]
[ 15.775849] [<ffffffff81551ffc>] __netif_receive_skb_core+0x24c/0xc00
[ 15.786590] [<ffffffff815529cb>] __netif_receive_skb+0x1b/0x70
[ 15.796706] [<ffffffff81552a4d>] netif_receive_skb_internal+0x2d/0x1e0
[ 15.807525] [<ffffffff815538e0>] napi_gro_receive+0x90/0x1b0
[ 15.817469] [<ffffffffa00036cb>] rtl8169_poll+0x30b/0x640 [r8169]
[ 15.827855] [<ffffffff81554742>] net_rx_action+0x132/0x310
[ 15.837644] [<ffffffff8105418d>] __do_softirq+0xed/0x4d0
[ 15.847232] [<ffffffff810546fe>] irq_exit+0x8e/0xb0
[ 15.856370] [<ffffffff81622fe1>] do_IRQ+0x71/0x110
[ 15.865431] [<ffffffff8162122f>] ret_from_intr+0x0/0x13
[ 15.874924] [<ffffffff814b8b97>] cpuidle_enter+0x17/0x20
[ 15.884503] [<ffffffff8108ffe7>] cpu_startup_entry+0x287/0x7c0
[ 15.894604] [<ffffffff81035850>] start_secondary+0x210/0x250
[ 15.904530] IN-SOFTIRQ-R at:
[ 15.910206] [<ffffffff8109a0b9>] __lock_acquire+0x929/0x2230
[ 15.920174] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 15.929832] [<ffffffff8161f978>] _raw_read_lock_bh+0x48/0x80
[ 15.939810] [<ffffffffa02bbb27>] ip6_pol_route.isra.41+0x67/0x3f0 [ipv6]
[ 15.950856] [<ffffffffa02bbedb>] ip6_pol_route_input+0x2b/0x30 [ipv6]
[ 15.961631] [<ffffffffa02bfa0a>] fib6_rule_lookup+0x1a/0x20 [ipv6]
[ 15.972154] [<ffffffffa02bba2c>] ip6_route_input_lookup.isra.39.constprop.46+0x4c/0x60 [ipv6]
[ 15.985043] [<ffffffffa02bbfab>] ip6_route_input+0x9b/0xc0 [ipv6]
[ 15.995508] [<ffffffffa02ac740>] ip6_rcv_finish+0x170/0x2a0 [ipv6]
[ 16.006075] [<ffffffffa02ad565>] ipv6_rcv+0x4f5/0x8b0 [ipv6]
[ 16.016080] [<ffffffff81551ffc>] __netif_receive_skb_core+0x24c/0xc00
[ 16.026872] [<ffffffff815529cb>] __netif_receive_skb+0x1b/0x70
[ 16.037043] [<ffffffff81552a4d>] netif_receive_skb_internal+0x2d/0x1e0
[ 16.047911] [<ffffffff815538e0>] napi_gro_receive+0x90/0x1b0
[ 16.057925] [<ffffffffa00036cb>] rtl8169_poll+0x30b/0x640 [r8169]
[ 16.068355] [<ffffffff81554742>] net_rx_action+0x132/0x310
[ 16.078177] [<ffffffff8105418d>] __do_softirq+0xed/0x4d0
[ 16.087844] [<ffffffff810546fe>] irq_exit+0x8e/0xb0
[ 16.097033] [<ffffffff81622fe1>] do_IRQ+0x71/0x110
[ 16.106146] [<ffffffff8162122f>] ret_from_intr+0x0/0x13
[ 16.115667] [<ffffffff814b8b97>] cpuidle_enter+0x17/0x20
[ 16.125271] [<ffffffff8108ffe7>] cpu_startup_entry+0x287/0x7c0
[ 16.135406] [<ffffffff81035850>] start_secondary+0x210/0x250
[ 16.145395] INITIAL USE at:
[ 16.151015] [<ffffffff81099bd3>] __lock_acquire+0x443/0x2230
[ 16.160924] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 16.170531] [<ffffffff8161fd05>] _raw_write_lock_bh+0x45/0x80
[ 16.180534] [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 16.190463] [<ffffffffa02b40c5>] __ipv6_ifa_notify+0x335/0x340 [ipv6]
[ 16.201185] [<ffffffffa02b414c>] ipv6_ifa_notify+0x7c/0x130 [ipv6]
[ 16.211657] [<ffffffffa02b59c4>] add_addr+0x64/0x90 [ipv6]
[ 16.221428] [<ffffffffa02b7669>] addrconf_notify+0x589/0xb50 [ipv6]
[ 16.231995] [<ffffffff81074305>] notifier_call_chain+0x55/0x110
[ 16.242216] [<ffffffff810743e6>] raw_notifier_call_chain+0x16/0x20
[ 16.252697] [<ffffffff8154d280>] call_netdevice_notifiers_info+0x40/0x70
[ 16.263699] [<ffffffff81557140>] __dev_notify_flags+0x40/0xc0
[ 16.273747] [<ffffffff8155794a>] dev_change_flags+0x5a/0x70
[ 16.283596] [<ffffffff81567991>] do_setlink+0x3f1/0xb50
[ 16.293090] [<ffffffff815687ed>] rtnl_newlink+0x5bd/0x770
[ 16.302738] [<ffffffff815672f8>] rtnetlink_rcv_msg+0x98/0x250
[ 16.312743] [<ffffffff81585801>] netlink_rcv_skb+0xa1/0xc0
[ 16.322487] [<ffffffff8156724a>] rtnetlink_rcv+0x2a/0x40
[ 16.332057] [<ffffffff81585056>] netlink_unicast+0x146/0x1e0
[ 16.341976] [<ffffffff81585508>] netlink_sendmsg+0x348/0x440
[ 16.351886] [<ffffffff81534693>] sock_sendmsg+0x73/0x90
[ 16.361396] [<ffffffff81535548>] ___sys_sendmsg+0x408/0x420
[ 16.371219] [<ffffffff81538589>] __sys_sendmsg+0x49/0x80
[ 16.380773] [<ffffffff815385d2>] SyS_sendmsg+0x12/0x20
[ 16.390147] [<ffffffff816205d6>] system_call_fastpath+0x1a/0x1f
[ 16.400306] }
[ 16.404472] ... key at: [<ffffffffa02f55a8>] __key.43500+0x0/0xffffffffffff2221 [ipv6]
[ 16.415507] ... acquired at:
[ 16.420999] [<ffffffff810960eb>] check_usage_forwards+0x15b/0x160
[ 16.429956] [<ffffffff81096f74>] mark_lock+0x444/0x760
[ 16.437959] [<ffffffff8109a0b9>] __lock_acquire+0x929/0x2230
[ 16.446473] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 16.454641] [<ffffffff8161fd05>] _raw_write_lock_bh+0x45/0x80
[ 16.463225] [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 16.471723] [<ffffffffa02bbda4>] ip6_pol_route.isra.41+0x2e4/0x3f0 [ipv6]
[ 16.481368] [<ffffffffa02bbedb>] ip6_pol_route_input+0x2b/0x30 [ipv6]
[ 16.490675] [<ffffffffa02bfa0a>] fib6_rule_lookup+0x1a/0x20 [ipv6]
[ 16.499711] [<ffffffffa02bba2c>] ip6_route_input_lookup.isra.39.constprop.46+0x4c/0x60 [ipv6]
[ 16.511119] [<ffffffffa02bbfab>] ip6_route_input+0x9b/0xc0 [ipv6]
[ 16.520092] [<ffffffffa02ac740>] ip6_rcv_finish+0x170/0x2a0 [ipv6]
[ 16.529134] [<ffffffffa02ad565>] ipv6_rcv+0x4f5/0x8b0 [ipv6]
[ 16.537666] [<ffffffff81551ffc>] __netif_receive_skb_core+0x24c/0xc00
[ 16.546961] [<ffffffff815529cb>] __netif_receive_skb+0x1b/0x70
[ 16.555692] [<ffffffff81552a4d>] netif_receive_skb_internal+0x2d/0x1e0
[ 16.565082] [<ffffffff815538e0>] napi_gro_receive+0x90/0x1b0
[ 16.573613] [<ffffffffa00036cb>] rtl8169_poll+0x30b/0x640 [r8169]
[ 16.582589] [<ffffffff81554742>] net_rx_action+0x132/0x310
[ 16.590965] [<ffffffff8105418d>] __do_softirq+0xed/0x4d0
[ 16.599165] [<ffffffff810546fe>] irq_exit+0x8e/0xb0
[ 16.606911] [<ffffffff81622fe1>] do_IRQ+0x71/0x110
[ 16.614550] [<ffffffff8162122f>] ret_from_intr+0x0/0x13
[ 16.622598] [<ffffffff814b8b97>] cpuidle_enter+0x17/0x20
[ 16.630731] [<ffffffff8108ffe7>] cpu_startup_entry+0x287/0x7c0
[ 16.639410] [<ffffffff81035850>] start_secondary+0x210/0x250
[ 16.647919]
[ 16.651927]
[ 16.651927] stack backtrace:
[ 16.661241] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 3.16.0-rc6+ #1
[ 16.670118] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
[ 16.682584] ffffffff82830c40 ffff88042da03910 ffffffff8161810e ffffffff82830c40
[ 16.692638] ffff88042da03950 ffffffff8161752f ffffffff8183b499 ffff88042b9e8760
[ 16.702704] ffff88042b9e8000 ffffffff8183b499 0000000000000000 ffffffff82830c40
[ 16.712777] Call Trace:
[ 16.717802] <IRQ> [<ffffffff8161810e>] dump_stack+0x4e/0x7a
[ 16.726192] [<ffffffff8161752f>] print_irq_inversion_bug.part.31+0x1b8/0x1c4
[ 16.735953] [<ffffffff810960eb>] check_usage_forwards+0x15b/0x160
[ 16.744763] [<ffffffff81096f74>] mark_lock+0x444/0x760
[ 16.752609] [<ffffffff81095f90>] ? print_shortest_lock_dependencies+0x1d0/0x1d0
[ 16.762658] [<ffffffff8109a0b9>] __lock_acquire+0x929/0x2230
[ 16.771050] [<ffffffff81095f90>] ? print_shortest_lock_dependencies+0x1d0/0x1d0
[ 16.781134] [<ffffffff8109485e>] ? find_usage_backwards+0x4e/0x90
[ 16.789996] [<ffffffff8109c1c9>] lock_acquire+0xb9/0x200
[ 16.798112] [<ffffffffa02bba87>] ? ip6_ins_rt+0x47/0x80 [ipv6]
[ 16.806712] [<ffffffff8161fd05>] _raw_write_lock_bh+0x45/0x80
[ 16.815218] [<ffffffffa02bba87>] ? ip6_ins_rt+0x47/0x80 [ipv6]
[ 16.823794] [<ffffffffa02bba87>] ip6_ins_rt+0x47/0x80 [ipv6]
[ 16.832197] [<ffffffffa02bbda4>] ip6_pol_route.isra.41+0x2e4/0x3f0 [ipv6]
[ 16.841744] [<ffffffffa02bbedb>] ip6_pol_route_input+0x2b/0x30 [ipv6]
[ 16.850959] [<ffffffffa02bfa0a>] fib6_rule_lookup+0x1a/0x20 [ipv6]
[ 16.859888] [<ffffffffa02bba2c>] ip6_route_input_lookup.isra.39.constprop.46+0x4c/0x60 [ipv6]
[ 16.871192] [<ffffffffa02bbfab>] ip6_route_input+0x9b/0xc0 [ipv6]
[ 16.880052] [<ffffffffa02ac740>] ip6_rcv_finish+0x170/0x2a0 [ipv6]
[ 16.889016] [<ffffffffa02ad565>] ipv6_rcv+0x4f5/0x8b0 [ipv6]
[ 16.897427] [<ffffffffa02ad098>] ? ipv6_rcv+0x28/0x8b0 [ipv6]
[ 16.905917] [<ffffffff81551ffc>] __netif_receive_skb_core+0x24c/0xc00
[ 16.915098] [<ffffffff81551e15>] ? __netif_receive_skb_core+0x65/0xc00
[ 16.924421] [<ffffffff815529cb>] __netif_receive_skb+0x1b/0x70
[ 16.933003] [<ffffffff81552a4d>] netif_receive_skb_internal+0x2d/0x1e0
[ 16.942280] [<ffffffff815538e0>] napi_gro_receive+0x90/0x1b0
[ 16.950703] [<ffffffffa00036cb>] rtl8169_poll+0x30b/0x640 [r8169]
[ 16.959561] [<ffffffff81554742>] net_rx_action+0x132/0x310
[ 16.967818] [<ffffffff812f6d83>] ? __this_cpu_preempt_check+0x13/0x20
[ 16.977041] [<ffffffff8105418d>] __do_softirq+0xed/0x4d0
[ 16.985139] [<ffffffff810546fe>] irq_exit+0x8e/0xb0
[ 16.992803] [<ffffffff81622fe1>] do_IRQ+0x71/0x110
[ 17.000378] [<ffffffff8162122f>] common_interrupt+0x6f/0x6f
[ 17.008764] <EOI> [<ffffffff814b8a5f>] ? cpuidle_enter_state+0x5f/0xd0
[ 17.018246] [<ffffffff814b8a5b>] ? cpuidle_enter_state+0x5b/0xd0
[ 17.027079] [<ffffffff814b8b97>] cpuidle_enter+0x17/0x20
[ 17.035257] [<ffffffff8108ffe7>] cpu_startup_entry+0x287/0x7c0
[ 17.043910] [<ffffffff81035850>] start_secondary+0x210/0x250
[ 28.960885] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 28.974767] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
Borislav Petkov [mailto:[email protected]]
> Sent: Tuesday, July 22, 2014 4:19 PM
> To: nic_swsd
> Cc: [email protected]; lkml
> Subject: 3.16-rc6+: r8169 fresh new irq lock inversion
>
> Hi all,
>
> I got this new lockdep splat after booting rc6 + tip/master this
> morning. I haven't seen it before so it must be new in rc6
> which should
> be easy to pinpoint... or maybe there's already a fix queued
> somewhere. :)
I have no idea about why you see the messages. I don't think
the patches which submitted previously for r8169.c would cause
the problem. Although I have submitted some patches about IPv6,
the hw checksum should be off by default. That is, the behavior
should be the same with the previous one.
Best Regards,
Hayes
On Thu, Jul 24, 2014 at 09:01:27AM +0000, Hayes Wang wrote:
> I have no idea about why you see the messages. I don't think
> the patches which submitted previously for r8169.c would cause
> the problem. Although I have submitted some patches about IPv6,
> the hw checksum should be off by default. That is, the behavior
> should be the same with the previous one.
Yeah, the culprit might be somewhere else, follow this thread:
https://lkml.kernel.org/r/[email protected]
Thanks for taking a look anyway though.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--