[ 9.184502][ T187] ip (187) used greatest stack depth: 24024 bytes left [ 11.393817][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 11.552576][ T302] gre: GRE over IPv4 demultiplexer driver [ 11.580795][ T302] ip6_gre: GRE over IPv6 tunneling driver [ 18.235456][ T394] GACT probability NOT on [ 18.363590][ C0] [ 18.363674][ C0] ======================================================== [ 18.363830][ C0] WARNING: possible irq lock inversion dependency detected [ 18.363974][ C0] 7.1.0-rc5-virtme #1 Not tainted [ 18.364089][ C0] -------------------------------------------------------- [ 18.364238][ C0] mausezahn/398 just changed the state of lock: [ 18.364364][ C0] ff11000010b10d78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 18.364541][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 18.364688][ C0] (acaddr_hash_lock){+.+.}-{3:3} [ 18.364690][ C0] [ 18.364690][ C0] [ 18.364690][ C0] and interrupts could create inverse lock ordering between them. [ 18.364690][ C0] [ 18.365052][ C0] [ 18.365052][ C0] other info that might help us debug this: [ 18.365193][ C0] Possible interrupt unsafe locking scenario: [ 18.365193][ C0] [ 18.365337][ C0] CPU0 CPU1 [ 18.365444][ C0] ---- ---- [ 18.365539][ C0] lock(acaddr_hash_lock); [ 18.365644][ C0] local_irq_disable(); [ 18.365769][ C0] lock(&ndev->lock); [ 18.365895][ C0] lock(acaddr_hash_lock); [ 18.366024][ C0] [ 18.366096][ C0] lock(&ndev->lock); [ 18.366172][ C0] [ 18.366172][ C0] *** DEADLOCK *** [ 18.366172][ C0] [ 18.366311][ C0] 6 locks held by mausezahn/398: [ 18.366411][ C0] #0: ffffffffae177d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 18.366585][ C0] #1: ffffffffae177d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 18.366753][ C0] #2: ffffffffae177d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 18.366924][ C0] #3: ffffffffae177cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 18.367090][ C0] #4: ffffffffae177d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 18.367254][ C0] #5: ffffffffae177d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 18.367428][ C0] [ 18.367428][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 18.367594][ C0] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 18.367694][ C0] HARDIRQ-ON-W at: [ 18.367770][ C0] __lock_acquire+0x378/0xc10 [ 18.367899][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.368023][ C0] _raw_spin_lock+0x33/0x40 [ 18.368152][ C0] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.368303][ C0] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.368425][ C0] addrconf_join_anycast+0x1bc/0x260 [ 18.368544][ C0] __ipv6_ifa_notify+0x75b/0xad0 [ 18.368664][ C0] addrconf_dad_completed+0x14b/0xe10 [ 18.368811][ C0] addrconf_dad_begin+0x2e1/0x540 [ 18.368932][ C0] addrconf_dad_work+0x170/0x930 [ 18.369055][ C0] process_one_work+0xdf8/0x1410 [ 18.369178][ C0] worker_thread+0x4f1/0xd60 [ 18.369298][ C0] kthread+0x367/0x460 [ 18.369428][ C0] ret_from_fork+0x474/0x6b0 [ 18.369548][ C0] ret_from_fork_asm+0x11/0x20 [ 18.369670][ C0] SOFTIRQ-ON-W at: [ 18.369744][ C0] __lock_acquire+0x378/0xc10 [ 18.369863][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.369983][ C0] _raw_spin_lock+0x33/0x40 [ 18.370107][ C0] __ipv6_dev_ac_dec+0x236/0x5d0 [ 18.370228][ C0] addrconf_leave_anycast+0x1bc/0x260 [ 18.370379][ C0] __ipv6_ifa_notify+0x6b4/0xad0 [ 18.370497][ C0] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 18.370640][ C0] addrconf_notify+0x339/0xf30 [ 18.370763][ C0] notifier_call_chain+0xb0/0x320 [ 18.370883][ C0] __netdev_upper_dev_link+0x3a5/0x590 [ 18.371027][ C0] netdev_master_upper_dev_link+0x86/0xb0 [ 18.371174][ C0] vrf_add_slave+0xdd/0x210 [vrf] [ 18.371295][ C0] do_set_master+0x357/0x580 [ 18.371422][ C0] do_setlink.isra.0+0xa31/0x2750 [ 18.371542][ C0] rtnl_newlink+0x8d1/0xef0 [ 18.371661][ C0] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.371780][ C0] netlink_rcv_skb+0x14e/0x3a0 [ 18.371900][ C0] netlink_unicast+0x486/0x750 [ 18.372027][ C0] netlink_sendmsg+0x735/0xc60 [ 18.372167][ C0] ____sys_sendmsg+0x419/0x850 [ 18.372299][ C0] ___sys_sendmsg+0x14e/0x1d0 [ 18.372435][ C0] __sys_sendmsg+0x145/0x1f0 [ 18.372564][ C0] do_syscall_64+0x117/0x590 [ 18.372685][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.372830][ C0] INITIAL USE at: [ 18.372902][ C0] __lock_acquire+0x378/0xc10 [ 18.373022][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.373142][ C0] _raw_spin_lock+0x33/0x40 [ 18.373263][ C0] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.373414][ C0] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.373536][ C0] addrconf_join_anycast+0x1bc/0x260 [ 18.373659][ C0] __ipv6_ifa_notify+0x75b/0xad0 [ 18.373780][ C0] addrconf_dad_completed+0x14b/0xe10 [ 18.373901][ C0] addrconf_dad_begin+0x2e1/0x540 [ 18.374023][ C0] addrconf_dad_work+0x170/0x930 [ 18.374146][ C0] process_one_work+0xdf8/0x1410 [ 18.374267][ C0] worker_thread+0x4f1/0xd60 [ 18.374395][ C0] kthread+0x367/0x460 [ 18.374517][ C0] ret_from_fork+0x474/0x6b0 [ 18.374638][ C0] ret_from_fork_asm+0x11/0x20 [ 18.374760][ C0] } [ 18.374811][ C0] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 18.374958][ C0] ... acquired at: [ 18.375031][ C0] __lock_acquire+0x508/0xc10 [ 18.375128][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.375226][ C0] _raw_spin_lock+0x33/0x40 [ 18.375322][ C0] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.375449][ C0] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.375546][ C0] addrconf_join_anycast+0x1bc/0x260 [ 18.375642][ C0] __ipv6_ifa_notify+0x75b/0xad0 [ 18.375739][ C0] addrconf_dad_completed+0x14b/0xe10 [ 18.375838][ C0] addrconf_dad_begin+0x2e1/0x540 [ 18.375934][ C0] addrconf_dad_work+0x170/0x930 [ 18.376036][ C0] process_one_work+0xdf8/0x1410 [ 18.376139][ C0] worker_thread+0x4f1/0xd60 [ 18.376241][ C0] kthread+0x367/0x460 [ 18.376314][ C0] ret_from_fork+0x474/0x6b0 [ 18.376416][ C0] ret_from_fork_asm+0x11/0x20 [ 18.376511][ C0] [ 18.376564][ C0] -> (&ndev->lock){++.-}-{3:3} { [ 18.376661][ C0] HARDIRQ-ON-W at: [ 18.376735][ C0] __lock_acquire+0x378/0xc10 [ 18.376857][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.376977][ C0] _raw_write_lock_bh+0x38/0x50 [ 18.377098][ C0] addrconf_permanent_addr+0x108/0x9c0 [ 18.377218][ C0] addrconf_notify+0x151/0xf30 [ 18.377341][ C0] notifier_call_chain+0xb0/0x320 [ 18.377472][ C0] __dev_notify_flags+0xde/0x280 [ 18.377593][ C0] netif_change_flags+0xfe/0x190 [ 18.377713][ C0] do_setlink.isra.0+0x1cc3/0x2750 [ 18.377835][ C0] rtnl_newlink+0x8d1/0xef0 [ 18.377954][ C0] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.378074][ C0] netlink_rcv_skb+0x14e/0x3a0 [ 18.378194][ C0] netlink_unicast+0x486/0x750 [ 18.378315][ C0] netlink_sendmsg+0x735/0xc60 [ 18.378441][ C0] ____sys_sendmsg+0x419/0x850 [ 18.378563][ C0] ___sys_sendmsg+0x14e/0x1d0 [ 18.378686][ C0] __sys_sendmsg+0x145/0x1f0 [ 18.378811][ C0] do_syscall_64+0x117/0x590 [ 18.378938][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.379090][ C0] HARDIRQ-ON-R at: [ 18.379163][ C0] __lock_acquire+0x378/0xc10 [ 18.379284][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.379407][ C0] _raw_read_lock_bh+0x44/0x80 [ 18.379530][ C0] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 18.379676][ C0] inet6_fill_link_af+0x5c/0xe0 [ 18.379796][ C0] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 18.379946][ C0] rtnl_getlink+0x9c9/0xeb0 [ 18.380079][ C0] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.380211][ C0] netlink_rcv_skb+0x14e/0x3a0 [ 18.380338][ C0] netlink_unicast+0x486/0x750 [ 18.380463][ C0] netlink_sendmsg+0x735/0xc60 [ 18.380585][ C0] ____sys_sendmsg+0x419/0x850 [ 18.380707][ C0] ___sys_sendmsg+0x14e/0x1d0 [ 18.380832][ C0] __sys_sendmsg+0x145/0x1f0 [ 18.380951][ C0] do_syscall_64+0x117/0x590 [ 18.381079][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.381224][ C0] IN-SOFTIRQ-R at: [ 18.381297][ C0] __lock_acquire+0x378/0xc10 [ 18.381422][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.381545][ C0] _raw_read_lock_bh+0x44/0x80 [ 18.381667][ C0] ipv6_get_lladdr+0xa8/0x3f0 [ 18.381788][ C0] ndisc_send_ns+0xf3/0x120 [ 18.381908][ C0] ndisc_solicit+0x314/0x480 [ 18.382028][ C0] neigh_probe+0xb3/0x100 [ 18.382149][ C0] __neigh_event_send+0x802/0x1070 [ 18.382271][ C0] neigh_resolve_output+0xbe/0x140 [ 18.382400][ C0] ip6_finish_output2+0x423/0x1300 [ 18.382523][ C0] ip6_finish_output+0x646/0xda0 [ 18.382645][ C0] ip6_output+0x23f/0x7f0 [ 18.382766][ C0] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.382914][ C0] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.383038][ C0] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.383185][ C0] dev_hard_start_xmit+0xf8/0x690 [ 18.383307][ C0] __dev_queue_xmit+0xbf4/0x1b60 [ 18.383444][ C0] ip_finish_output2+0x5b9/0x1bc0 [ 18.383566][ C0] ip_output+0x1ca/0x660 [ 18.383686][ C0] ip_rcv+0xdc/0x3d0 [ 18.383785][ C0] __netif_receive_skb_one_core+0xfc/0x180 [ 18.383928][ C0] process_backlog+0x2bc/0x1490 [ 18.384055][ C0] __napi_poll+0xa7/0x3b0 [ 18.384175][ C0] net_rx_action+0x513/0xf50 [ 18.384302][ C0] handle_softirqs+0x1d8/0x940 [ 18.384425][ C0] do_softirq+0xa9/0xe0 [ 18.384545][ C0] __local_bh_enable_ip+0x113/0x140 [ 18.384666][ C0] __dev_queue_xmit+0x95b/0x1b60 [ 18.384788][ C0] packet_snd+0xfad/0x1990 [ 18.384910][ C0] __sys_sendto+0x2c9/0x400 [ 18.385033][ C0] __x64_sys_sendto+0xe4/0x1f0 [ 18.385154][ C0] do_syscall_64+0x117/0x590 [ 18.385278][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.385432][ C0] INITIAL USE at: [ 18.385505][ C0] __lock_acquire+0x378/0xc10 [ 18.385626][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.385748][ C0] _raw_write_lock_bh+0x38/0x50 [ 18.385868][ C0] addrconf_permanent_addr+0x108/0x9c0 [ 18.385992][ C0] addrconf_notify+0x151/0xf30 [ 18.386112][ C0] notifier_call_chain+0xb0/0x320 [ 18.386233][ C0] __dev_notify_flags+0xde/0x280 [ 18.386355][ C0] netif_change_flags+0xfe/0x190 [ 18.386475][ C0] do_setlink.isra.0+0x1cc3/0x2750 [ 18.386597][ C0] rtnl_newlink+0x8d1/0xef0 [ 18.386718][ C0] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.386839][ C0] netlink_rcv_skb+0x14e/0x3a0 [ 18.386960][ C0] netlink_unicast+0x486/0x750 [ 18.387082][ C0] netlink_sendmsg+0x735/0xc60 [ 18.387203][ C0] ____sys_sendmsg+0x419/0x850 [ 18.387326][ C0] ___sys_sendmsg+0x14e/0x1d0 [ 18.387450][ C0] __sys_sendmsg+0x145/0x1f0 [ 18.387575][ C0] do_syscall_64+0x117/0x590 [ 18.387696][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.387841][ C0] INITIAL READ USE at: [ 18.387915][ C0] __lock_acquire+0x378/0xc10 [ 18.388100][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.388222][ C0] _raw_read_lock_bh+0x44/0x80 [ 18.388342][ C0] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 18.388551][ C0] inet6_fill_link_af+0x5c/0xe0 [ 18.388671][ C0] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 18.388820][ C0] rtnl_getlink+0x9c9/0xeb0 [ 18.389001][ C0] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.389122][ C0] netlink_rcv_skb+0x14e/0x3a0 [ 18.389242][ C0] netlink_unicast+0x486/0x750 [ 18.389425][ C0] netlink_sendmsg+0x735/0xc60 [ 18.389548][ C0] ____sys_sendmsg+0x419/0x850 [ 18.389668][ C0] ___sys_sendmsg+0x14e/0x1d0 [ 18.389790][ C0] __sys_sendmsg+0x145/0x1f0 [ 18.389910][ C0] do_syscall_64+0x117/0x590 [ 18.390030][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.390235][ C0] } [ 18.390284][ C0] ... key at: [] __key.37+0x0/0x40 [ 18.390435][ C0] ... acquired at: [ 18.390507][ C0] mark_lock+0x1d7/0xa00 [ 18.390660][ C0] mark_usage+0x42/0x170 [ 18.390757][ C0] __lock_acquire+0x378/0xc10 [ 18.390853][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.390951][ C0] _raw_read_lock_bh+0x44/0x80 [ 18.391104][ C0] ipv6_get_lladdr+0xa8/0x3f0 [ 18.391201][ C0] ndisc_send_ns+0xf3/0x120 [ 18.391297][ C0] ndisc_solicit+0x314/0x480 [ 18.391398][ C0] neigh_probe+0xb3/0x100 [ 18.391551][ C0] __neigh_event_send+0x802/0x1070 [ 18.391646][ C0] neigh_resolve_output+0xbe/0x140 [ 18.391742][ C0] ip6_finish_output2+0x423/0x1300 [ 18.391837][ C0] ip6_finish_output+0x646/0xda0 [ 18.391989][ C0] ip6_output+0x23f/0x7f0 [ 18.392089][ C0] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.392210][ C0] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.392310][ C0] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.392494][ C0] dev_hard_start_xmit+0xf8/0x690 [ 18.392596][ C0] __dev_queue_xmit+0xbf4/0x1b60 [ 18.392694][ C0] ip_finish_output2+0x5b9/0x1bc0 [ 18.392790][ C0] ip_output+0x1ca/0x660 [ 18.392943][ C0] ip_rcv+0xdc/0x3d0 [ 18.393018][ C0] __netif_receive_skb_one_core+0xfc/0x180 [ 18.393138][ C0] process_backlog+0x2bc/0x1490 [ 18.393233][ C0] __napi_poll+0xa7/0x3b0 [ 18.393393][ C0] net_rx_action+0x513/0xf50 [ 18.393488][ C0] handle_softirqs+0x1d8/0x940 [ 18.393588][ C0] do_softirq+0xa9/0xe0 [ 18.393660][ C0] __local_bh_enable_ip+0x113/0x140 [ 18.393813][ C0] __dev_queue_xmit+0x95b/0x1b60 [ 18.393909][ C0] packet_snd+0xfad/0x1990 [ 18.394006][ C0] __sys_sendto+0x2c9/0x400 [ 18.394103][ C0] __x64_sys_sendto+0xe4/0x1f0 [ 18.394257][ C0] do_syscall_64+0x117/0x590 [ 18.394355][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.394473][ C0] [ 18.394522][ C0] [ 18.394522][ C0] stack backtrace: [ 18.394701][ C0] CPU: 0 UID: 0 PID: 398 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 18.394704][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.394706][ C0] Call Trace: [ 18.394708][ C0] [ 18.394709][ C0] dump_stack_lvl+0x6f/0xa0 [ 18.394713][ C0] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 18.394716][ C0] mark_lock_irq+0x989/0x9c0 [ 18.394719][ C0] mark_lock+0x1d7/0xa00 [ 18.394721][ C0] mark_usage+0x42/0x170 [ 18.394722][ C0] __lock_acquire+0x378/0xc10 [ 18.394724][ C0] ? __lock_acquire+0x508/0xc10 [ 18.394725][ C0] lock_acquire.part.0+0xbc/0x260 [ 18.394727][ C0] ? ipv6_get_lladdr+0xa8/0x3f0 [ 18.394729][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394732][ C0] ? lock_acquire+0x134/0x160 [ 18.394734][ C0] _raw_read_lock_bh+0x44/0x80 [ 18.394735][ C0] ? ipv6_get_lladdr+0xa8/0x3f0 [ 18.394737][ C0] ipv6_get_lladdr+0xa8/0x3f0 [ 18.394739][ C0] ndisc_send_ns+0xf3/0x120 [ 18.394740][ C0] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 18.394742][ C0] ? ndisc_parse_options+0x30/0x30 [ 18.394744][ C0] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 18.394746][ C0] ndisc_solicit+0x314/0x480 [ 18.394747][ C0] ? ndisc_send_ns+0x120/0x120 [ 18.394749][ C0] ? neigh_probe+0x62/0x100 [ 18.394751][ C0] neigh_probe+0xb3/0x100 [ 18.394753][ C0] __neigh_event_send+0x802/0x1070 [ 18.394755][ C0] ? warn_bogus_irq_restore+0x1/0x20 [ 18.394757][ C0] ? ___neigh_create+0x811/0x1070 [ 18.394759][ C0] neigh_resolve_output+0xbe/0x140 [ 18.394761][ C0] ip6_finish_output2+0x423/0x1300 [ 18.394763][ C0] ? ip6_xmit+0x2000/0x2000 [ 18.394765][ C0] ? lock_acquire.part.0+0xbc/0x260 [ 18.394766][ C0] ? find_held_lock+0x2b/0x80 [ 18.394769][ C0] ? __lock_release.isra.0+0x6b/0x1a0 [ 18.394770][ C0] ? ip6_mtu+0x15d/0x310 [ 18.394773][ C0] ip6_finish_output+0x646/0xda0 [ 18.394775][ C0] ip6_output+0x23f/0x7f0 [ 18.394776][ C0] ? ip6_finish_output+0xda0/0xda0 [ 18.394778][ C0] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 18.394781][ C0] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.394785][ C0] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 18.394787][ C0] ? pskb_expand_head+0x4ac/0xf50 [ 18.394789][ C0] ? __lock_acquire+0x508/0xc10 [ 18.394791][ C0] ? __pskb_copy_fclone+0x1080/0x1080 [ 18.394794][ C0] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.394796][ C0] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 18.394798][ C0] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 18.394800][ C0] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 18.394802][ C0] ? __asan_memcpy+0x3c/0x60 [ 18.394805][ C0] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.394808][ C0] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 18.394809][ C0] ? sock_def_readable+0x156/0x490 [ 18.394811][ C0] ? find_held_lock+0x2b/0x80 [ 18.394814][ C0] ? dev_queue_xmit_nit+0x642/0x9e0 [ 18.394817][ C0] dev_hard_start_xmit+0xf8/0x690 [ 18.394818][ C0] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.394820][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394822][ C0] __dev_queue_xmit+0xbf4/0x1b60 [ 18.394824][ C0] ? __lock_acquire+0x508/0xc10 [ 18.394826][ C0] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 18.394828][ C0] ? find_held_lock+0x2b/0x80 [ 18.394830][ C0] ? __lock_release.isra.0+0x6b/0x1a0 [ 18.394832][ C0] ? ___neigh_create+0x811/0x1070 [ 18.394834][ C0] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.394836][ C0] ip_finish_output2+0x5b9/0x1bc0 [ 18.394838][ C0] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 18.394840][ C0] ? ip4_dst_hoplimit+0x320/0x320 [ 18.394842][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394844][ C0] ip_output+0x1ca/0x660 [ 18.394846][ C0] ? ip_finish_output+0x460/0x460 [ 18.394847][ C0] ? ip4_frag_init+0x720/0x720 [ 18.394849][ C0] ? ip_forward+0xfa7/0x1570 [ 18.394851][ C0] ? process_backlog+0x561/0x1490 [ 18.394852][ C0] ip_rcv+0xdc/0x3d0 [ 18.394854][ C0] ? ip_local_deliver+0x4c0/0x4c0 [ 18.394856][ C0] ? mark_usage+0x61/0x170 [ 18.394858][ C0] ? __lock_acquire+0x508/0xc10 [ 18.394859][ C0] ? init_data_structures_once.part.0+0x1a7/0x450 [ 18.394861][ C0] __netif_receive_skb_one_core+0xfc/0x180 [ 18.394862][ C0] ? lock_acquire.part.0+0xbc/0x260 [ 18.394863][ C0] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 18.394865][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394867][ C0] process_backlog+0x2bc/0x1490 [ 18.394869][ C0] __napi_poll+0xa7/0x3b0 [ 18.394871][ C0] net_rx_action+0x513/0xf50 [ 18.394873][ C0] ? __napi_poll+0x3b0/0x3b0 [ 18.394874][ C0] ? find_held_lock+0x2b/0x80 [ 18.394878][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394880][ C0] handle_softirqs+0x1d8/0x940 [ 18.394881][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394883][ C0] ? _local_bh_enable+0xd0/0xd0 [ 18.394884][ C0] ? trace_csd_function_exit+0xb3/0x1a0 [ 18.394886][ C0] ? rcu_is_watching+0x15/0xd0 [ 18.394888][ C0] do_softirq+0xa9/0xe0 [ 18.394890][ C0] [ 18.394890][ C0] [ 18.394891][ C0] ? __dev_queue_xmit+0x946/0x1b60 [ 18.394893][ C0] __local_bh_enable_ip+0x113/0x140 [ 18.394894][ C0] __dev_queue_xmit+0x95b/0x1b60 [ 18.394896][ C0] ? _copy_from_iter+0x1bb/0x1810 [ 18.394900][ C0] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 18.394902][ C0] ? net_dim+0x730/0xd70 [ 18.394904][ C0] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 18.394907][ C0] ? packet_release+0xc70/0xc70 [ 18.394909][ C0] packet_snd+0xfad/0x1990 [ 18.394912][ C0] ? tpacket_snd+0x19e0/0x19e0 [ 18.394913][ C0] ? __might_fault+0x97/0x140 [ 18.394917][ C0] ? __might_fault+0x97/0x140 [ 18.394918][ C0] ? __might_fault+0x97/0x140 [ 18.394920][ C0] __sys_sendto+0x2c9/0x400 [ 18.394922][ C0] ? __ia32_sys_getpeername+0xd0/0xd0 [ 18.394924][ C0] ? sock_ioctl+0x3cb/0x5f0 [ 18.394927][ C0] ? do_user_addr_fault+0x325/0xe30 [ 18.394931][ C0] __x64_sys_sendto+0xe4/0x1f0 [ 18.394933][ C0] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 18.394936][ C0] ? lockdep_hardirqs_on+0x8c/0x130 [ 18.394937][ C0] ? do_syscall_64+0x82/0x590 [ 18.394938][ C0] do_syscall_64+0x117/0x590 [ 18.394940][ C0] ? trace_hardirqs_off+0xd/0x30 [ 18.394941][ C0] ? exc_page_fault+0xee/0x100 [ 18.394943][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.394944][ C0] RIP: 0033:0x7f8106f3608e [ 18.394947][ C0] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa [ 18.394949][ C0] RSP: 002b:00007ffd00a014f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 18.394952][ C0] RAX: ffffffffffffffda RBX: 000055ec906dfb22 RCX: 00007f8106f3608e [ 18.394953][ C0] RDX: 0000000000000062 RSI: 000055ec906dfb22 RDI: 0000000000000005 [ 18.394954][ C0] RBP: 00007ffd00a01500 R08: 00007ffd00a01550 R09: 0000000000000014 [ 18.394955][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 000055ec906df830 [ 18.394956][ C0] R13: 0000000000000062 R14: 0000000000000005 R15: 000055ec906df830 [ 18.394958][ C0]