[ 9.352521][ T186] ip (186) used greatest stack depth: 23896 bytes left [ 11.899443][ T297] 8021q: 802.1Q VLAN Support v1.8 [ 12.077112][ T303] gre: GRE over IPv4 demultiplexer driver [ 12.122549][ T303] ip6_gre: GRE over IPv6 tunneling driver [ 18.961503][ T396] GACT probability NOT on [ 19.074961][ C1] [ 19.075055][ C1] ======================================================== [ 19.075215][ C1] WARNING: possible irq lock inversion dependency detected [ 19.075367][ C1] 7.1.0-rc5-virtme #1 Not tainted [ 19.075479][ C1] -------------------------------------------------------- [ 19.075629][ C1] mausezahn/402 just changed the state of lock: [ 19.075754][ C1] ff1100000fc48d78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 19.075945][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 19.076098][ C1] (acaddr_hash_lock){+.+.}-{3:3} [ 19.076100][ C1] [ 19.076100][ C1] [ 19.076100][ C1] and interrupts could create inverse lock ordering between them. [ 19.076100][ C1] [ 19.076472][ C1] [ 19.076472][ C1] other info that might help us debug this: [ 19.076624][ C1] Possible interrupt unsafe locking scenario: [ 19.076624][ C1] [ 19.076779][ C1] CPU0 CPU1 [ 19.076886][ C1] ---- ---- [ 19.076987][ C1] lock(acaddr_hash_lock); [ 19.077090][ C1] local_irq_disable(); [ 19.077219][ C1] lock(&ndev->lock); [ 19.077352][ C1] lock(acaddr_hash_lock); [ 19.077480][ C1] [ 19.077559][ C1] lock(&ndev->lock); [ 19.077642][ C1] [ 19.077642][ C1] *** DEADLOCK *** [ 19.077642][ C1] [ 19.077796][ C1] 6 locks held by mausezahn/402: [ 19.077897][ C1] #0: ffffffffad377d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 19.078081][ C1] #1: ffffffffad377d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 19.078255][ C1] #2: ffffffffad377d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 19.078429][ C1] #3: ffffffffad377cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 19.078607][ C1] #4: ffffffffad377d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 19.078788][ C1] #5: ffffffffad377d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 19.078962][ C1] [ 19.078962][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 19.079133][ C1] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 19.079238][ C1] HARDIRQ-ON-W at: [ 19.079322][ C1] __lock_acquire+0x378/0xc10 [ 19.079454][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.079580][ C1] _raw_spin_lock+0x33/0x40 [ 19.079706][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 19.079854][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 19.079980][ C1] addrconf_join_anycast+0x1bc/0x260 [ 19.080107][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 19.080231][ C1] addrconf_dad_completed+0x14b/0xe10 [ 19.080380][ C1] addrconf_dad_begin+0x2e1/0x540 [ 19.080509][ C1] addrconf_dad_work+0x170/0x930 [ 19.080635][ C1] process_one_work+0xdf8/0x1410 [ 19.080766][ C1] worker_thread+0x4f1/0xd60 [ 19.080891][ C1] kthread+0x367/0x460 [ 19.081019][ C1] ret_from_fork+0x474/0x6b0 [ 19.081145][ C1] ret_from_fork_asm+0x11/0x20 [ 19.081273][ C1] SOFTIRQ-ON-W at: [ 19.081349][ C1] __lock_acquire+0x378/0xc10 [ 19.081482][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.081612][ C1] _raw_spin_lock+0x33/0x40 [ 19.081742][ C1] __ipv6_dev_ac_dec+0x236/0x5d0 [ 19.081872][ C1] addrconf_leave_anycast+0x1bc/0x260 [ 19.082026][ C1] __ipv6_ifa_notify+0x6b4/0xad0 [ 19.082156][ C1] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 19.082308][ C1] addrconf_notify+0x339/0xf30 [ 19.082434][ C1] notifier_call_chain+0xb0/0x320 [ 19.082564][ C1] __netdev_upper_dev_link+0x3a5/0x590 [ 19.082720][ C1] netdev_master_upper_dev_link+0x86/0xb0 [ 19.082880][ C1] vrf_add_slave+0xdd/0x210 [vrf] [ 19.083008][ C1] do_set_master+0x357/0x580 [ 19.083133][ C1] do_setlink.isra.0+0xa31/0x2750 [ 19.083260][ C1] rtnl_newlink+0x8d1/0xef0 [ 19.083387][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 19.083526][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 19.083661][ C1] netlink_unicast+0x486/0x750 [ 19.083789][ C1] netlink_sendmsg+0x735/0xc60 [ 19.083917][ C1] ____sys_sendmsg+0x419/0x850 [ 19.084046][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 19.084170][ C1] __sys_sendmsg+0x145/0x1f0 [ 19.084294][ C1] do_syscall_64+0x117/0x590 [ 19.084418][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.084573][ C1] INITIAL USE at: [ 19.084650][ C1] __lock_acquire+0x378/0xc10 [ 19.084776][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.084903][ C1] _raw_spin_lock+0x33/0x40 [ 19.085028][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 19.085175][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 19.085302][ C1] addrconf_join_anycast+0x1bc/0x260 [ 19.085424][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 19.085555][ C1] addrconf_dad_completed+0x14b/0xe10 [ 19.085679][ C1] addrconf_dad_begin+0x2e1/0x540 [ 19.085801][ C1] addrconf_dad_work+0x170/0x930 [ 19.085928][ C1] process_one_work+0xdf8/0x1410 [ 19.086051][ C1] worker_thread+0x4f1/0xd60 [ 19.086174][ C1] kthread+0x367/0x460 [ 19.086301][ C1] ret_from_fork+0x474/0x6b0 [ 19.086429][ C1] ret_from_fork_asm+0x11/0x20 [ 19.086561][ C1] } [ 19.086617][ C1] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 19.086777][ C1] ... acquired at: [ 19.086854][ C1] __lock_acquire+0x508/0xc10 [ 19.086959][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.087066][ C1] _raw_spin_lock+0x33/0x40 [ 19.087169][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 19.087293][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 19.087395][ C1] addrconf_join_anycast+0x1bc/0x260 [ 19.087501][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 19.087604][ C1] addrconf_dad_completed+0x14b/0xe10 [ 19.087712][ C1] addrconf_dad_begin+0x2e1/0x540 [ 19.087814][ C1] addrconf_dad_work+0x170/0x930 [ 19.087915][ C1] process_one_work+0xdf8/0x1410 [ 19.088017][ C1] worker_thread+0x4f1/0xd60 [ 19.088117][ C1] kthread+0x367/0x460 [ 19.088193][ C1] ret_from_fork+0x474/0x6b0 [ 19.088292][ C1] ret_from_fork_asm+0x11/0x20 [ 19.088395][ C1] [ 19.088451][ C1] -> (&ndev->lock){++.-}-{3:3} { [ 19.088556][ C1] HARDIRQ-ON-W at: [ 19.088642][ C1] __lock_acquire+0x378/0xc10 [ 19.088788][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.088918][ C1] _raw_write_lock_bh+0x38/0x50 [ 19.089059][ C1] addrconf_permanent_addr+0x108/0x9c0 [ 19.089201][ C1] addrconf_notify+0x151/0xf30 [ 19.089335][ C1] notifier_call_chain+0xb0/0x320 [ 19.089476][ C1] __dev_notify_flags+0xde/0x280 [ 19.089611][ C1] netif_change_flags+0xfe/0x190 [ 19.089746][ C1] do_setlink.isra.0+0x1cc3/0x2750 [ 19.089883][ C1] rtnl_newlink+0x8d1/0xef0 [ 19.090013][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 19.090134][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 19.090257][ C1] netlink_unicast+0x486/0x750 [ 19.090378][ C1] netlink_sendmsg+0x735/0xc60 [ 19.090505][ C1] ____sys_sendmsg+0x419/0x850 [ 19.090631][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 19.090755][ C1] __sys_sendmsg+0x145/0x1f0 [ 19.090876][ C1] do_syscall_64+0x117/0x590 [ 19.091000][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.091147][ C1] HARDIRQ-ON-R at: [ 19.091221][ C1] __lock_acquire+0x378/0xc10 [ 19.091345][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.091473][ C1] _raw_read_lock_bh+0x44/0x80 [ 19.091608][ C1] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 19.091759][ C1] inet6_fill_link_af+0x5c/0xe0 [ 19.091883][ C1] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 19.092038][ C1] rtnl_getlink+0x9c9/0xeb0 [ 19.092163][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 19.092295][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 19.092417][ C1] netlink_unicast+0x486/0x750 [ 19.092542][ C1] netlink_sendmsg+0x735/0xc60 [ 19.092671][ C1] ____sys_sendmsg+0x419/0x850 [ 19.092796][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 19.092919][ C1] __sys_sendmsg+0x145/0x1f0 [ 19.093039][ C1] do_syscall_64+0x117/0x590 [ 19.093162][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.093308][ C1] IN-SOFTIRQ-R at: [ 19.093383][ C1] __lock_acquire+0x378/0xc10 [ 19.093511][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.093634][ C1] _raw_read_lock_bh+0x44/0x80 [ 19.093756][ C1] ipv6_get_lladdr+0xa8/0x3f0 [ 19.093879][ C1] ndisc_send_ns+0xf3/0x120 [ 19.094002][ C1] ndisc_solicit+0x314/0x480 [ 19.094129][ C1] neigh_probe+0xb3/0x100 [ 19.094255][ C1] __neigh_event_send+0x802/0x1070 [ 19.094380][ C1] neigh_resolve_output+0xbe/0x140 [ 19.094507][ C1] ip6_finish_output2+0x423/0x1300 [ 19.094631][ C1] ip6_finish_output+0x646/0xda0 [ 19.094753][ C1] ip6_output+0x23f/0x7f0 [ 19.094875][ C1] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 19.095027][ C1] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 19.095150][ C1] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 19.095296][ C1] dev_hard_start_xmit+0xf8/0x690 [ 19.095420][ C1] __dev_queue_xmit+0xbf4/0x1b60 [ 19.095550][ C1] ip_finish_output2+0x5b9/0x1bc0 [ 19.095698][ C1] ip_output+0x1ca/0x660 [ 19.095843][ C1] ip_rcv+0xdc/0x3d0 [ 19.095953][ C1] __netif_receive_skb_one_core+0xfc/0x180 [ 19.096103][ C1] process_backlog+0x2bc/0x1490 [ 19.096230][ C1] __napi_poll+0xa7/0x3b0 [ 19.096358][ C1] net_rx_action+0x513/0xf50 [ 19.096489][ C1] handle_softirqs+0x1d8/0x940 [ 19.096620][ C1] do_softirq+0xa9/0xe0 [ 19.096750][ C1] __local_bh_enable_ip+0x113/0x140 [ 19.096876][ C1] __dev_queue_xmit+0x95b/0x1b60 [ 19.096999][ C1] packet_snd+0xfad/0x1990 [ 19.097127][ C1] __sys_sendto+0x2c9/0x400 [ 19.097251][ C1] __x64_sys_sendto+0xe4/0x1f0 [ 19.097375][ C1] do_syscall_64+0x117/0x590 [ 19.097501][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.097649][ C1] INITIAL USE at: [ 19.097724][ C1] __lock_acquire+0x378/0xc10 [ 19.097851][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.097976][ C1] _raw_write_lock_bh+0x38/0x50 [ 19.098099][ C1] addrconf_permanent_addr+0x108/0x9c0 [ 19.098222][ C1] addrconf_notify+0x151/0xf30 [ 19.098343][ C1] notifier_call_chain+0xb0/0x320 [ 19.098474][ C1] __dev_notify_flags+0xde/0x280 [ 19.098598][ C1] netif_change_flags+0xfe/0x190 [ 19.098720][ C1] do_setlink.isra.0+0x1cc3/0x2750 [ 19.098844][ C1] rtnl_newlink+0x8d1/0xef0 [ 19.098967][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 19.099090][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 19.099214][ C1] netlink_unicast+0x486/0x750 [ 19.099337][ C1] netlink_sendmsg+0x735/0xc60 [ 19.099466][ C1] ____sys_sendmsg+0x419/0x850 [ 19.099595][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 19.099723][ C1] __sys_sendmsg+0x145/0x1f0 [ 19.099851][ C1] do_syscall_64+0x117/0x590 [ 19.099976][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.100121][ C1] INITIAL READ USE at: [ 19.100195][ C1] __lock_acquire+0x378/0xc10 [ 19.100317][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.100445][ C1] _raw_read_lock_bh+0x44/0x80 [ 19.100569][ C1] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 19.100717][ C1] inet6_fill_link_af+0x5c/0xe0 [ 19.100840][ C1] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 19.100990][ C1] rtnl_getlink+0x9c9/0xeb0 [ 19.101113][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 19.101236][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 19.101363][ C1] netlink_unicast+0x486/0x750 [ 19.101493][ C1] netlink_sendmsg+0x735/0xc60 [ 19.101619][ C1] ____sys_sendmsg+0x419/0x850 [ 19.101742][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 19.101865][ C1] __sys_sendmsg+0x145/0x1f0 [ 19.101990][ C1] do_syscall_64+0x117/0x590 [ 19.102112][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.102265][ C1] } [ 19.102315][ C1] ... key at: [] __key.37+0x0/0x40 [ 19.102470][ C1] ... acquired at: [ 19.102548][ C1] mark_lock+0x1d7/0xa00 [ 19.102647][ C1] mark_usage+0x42/0x170 [ 19.102748][ C1] __lock_acquire+0x378/0xc10 [ 19.102851][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.102949][ C1] _raw_read_lock_bh+0x44/0x80 [ 19.103048][ C1] ipv6_get_lladdr+0xa8/0x3f0 [ 19.103147][ C1] ndisc_send_ns+0xf3/0x120 [ 19.103246][ C1] ndisc_solicit+0x314/0x480 [ 19.103350][ C1] neigh_probe+0xb3/0x100 [ 19.103454][ C1] __neigh_event_send+0x802/0x1070 [ 19.103554][ C1] neigh_resolve_output+0xbe/0x140 [ 19.103659][ C1] ip6_finish_output2+0x423/0x1300 [ 19.103759][ C1] ip6_finish_output+0x646/0xda0 [ 19.103859][ C1] ip6_output+0x23f/0x7f0 [ 19.103958][ C1] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 19.104082][ C1] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 19.104181][ C1] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 19.104304][ C1] dev_hard_start_xmit+0xf8/0x690 [ 19.104403][ C1] __dev_queue_xmit+0xbf4/0x1b60 [ 19.104506][ C1] ip_finish_output2+0x5b9/0x1bc0 [ 19.104607][ C1] ip_output+0x1ca/0x660 [ 19.104705][ C1] ip_rcv+0xdc/0x3d0 [ 19.104780][ C1] __netif_receive_skb_one_core+0xfc/0x180 [ 19.104903][ C1] process_backlog+0x2bc/0x1490 [ 19.104999][ C1] __napi_poll+0xa7/0x3b0 [ 19.105096][ C1] net_rx_action+0x513/0xf50 [ 19.105194][ C1] handle_softirqs+0x1d8/0x940 [ 19.105292][ C1] do_softirq+0xa9/0xe0 [ 19.105370][ C1] __local_bh_enable_ip+0x113/0x140 [ 19.105475][ C1] __dev_queue_xmit+0x95b/0x1b60 [ 19.105574][ C1] packet_snd+0xfad/0x1990 [ 19.105673][ C1] __sys_sendto+0x2c9/0x400 [ 19.105838][ C1] __x64_sys_sendto+0xe4/0x1f0 [ 19.105940][ C1] do_syscall_64+0x117/0x590 [ 19.106043][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.106170][ C1] [ 19.106280][ C1] [ 19.106280][ C1] stack backtrace: [ 19.106405][ C1] CPU: 1 UID: 0 PID: 402 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 19.106408][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.106410][ C1] Call Trace: [ 19.106412][ C1] [ 19.106413][ C1] dump_stack_lvl+0x6f/0xa0 [ 19.106419][ C1] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 19.106422][ C1] mark_lock_irq+0x989/0x9c0 [ 19.106424][ C1] mark_lock+0x1d7/0xa00 [ 19.106426][ C1] mark_usage+0x42/0x170 [ 19.106428][ C1] __lock_acquire+0x378/0xc10 [ 19.106429][ C1] ? __lock_acquire+0x508/0xc10 [ 19.106431][ C1] lock_acquire.part.0+0xbc/0x260 [ 19.106432][ C1] ? ipv6_get_lladdr+0xa8/0x3f0 [ 19.106434][ C1] ? rcu_is_watching+0x15/0xd0 [ 19.106437][ C1] ? lock_acquire+0x134/0x160 [ 19.106439][ C1] _raw_read_lock_bh+0x44/0x80 [ 19.106445][ C1] ? ipv6_get_lladdr+0xa8/0x3f0 [ 19.106446][ C1] ipv6_get_lladdr+0xa8/0x3f0 [ 19.106449][ C1] ndisc_send_ns+0xf3/0x120 [ 19.106450][ C1] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 19.106452][ C1] ? ndisc_parse_options+0x30/0x30 [ 19.106453][ C1] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 19.106456][ C1] ndisc_solicit+0x314/0x480 [ 19.106457][ C1] ? ndisc_send_ns+0x120/0x120 [ 19.106459][ C1] ? neigh_probe+0x62/0x100 [ 19.106461][ C1] neigh_probe+0xb3/0x100 [ 19.106463][ C1] __neigh_event_send+0x802/0x1070 [ 19.106465][ C1] ? warn_bogus_irq_restore+0x1/0x20 [ 19.106467][ C1] ? ___neigh_create+0x811/0x1070 [ 19.106470][ C1] neigh_resolve_output+0xbe/0x140 [ 19.106472][ C1] ip6_finish_output2+0x423/0x1300 [ 19.106474][ C1] ? ip6_xmit+0x2000/0x2000 [ 19.106475][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 19.106476][ C1] ? find_held_lock+0x2b/0x80 [ 19.106479][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 19.106481][ C1] ? ip6_mtu+0x15d/0x310 [ 19.106483][ C1] ip6_finish_output+0x646/0xda0 [ 19.106485][ C1] ip6_output+0x23f/0x7f0 [ 19.106487][ C1] ? ip6_finish_output+0xda0/0xda0 [ 19.106489][ C1] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 19.106492][ C1] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 19.106496][ C1] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 19.106498][ C1] ? pskb_expand_head+0x4ac/0xf50 [ 19.106500][ C1] ? __lock_acquire+0x508/0xc10 [ 19.106502][ C1] ? __pskb_copy_fclone+0x1080/0x1080 [ 19.106505][ C1] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 19.106507][ C1] ? __ipv6_chk_addr_and_flags+0x230/0x5f0 [ 19.106509][ C1] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 19.106511][ C1] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 19.106513][ C1] ? __asan_memcpy+0x3c/0x60 [ 19.106517][ C1] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 19.106520][ C1] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 19.106521][ C1] ? sock_def_readable+0x156/0x490 [ 19.106523][ C1] ? find_held_lock+0x2b/0x80 [ 19.106526][ C1] ? dev_queue_xmit_nit+0x642/0x9e0 [ 19.106529][ C1] dev_hard_start_xmit+0xf8/0x690 [ 19.106531][ C1] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 19.106533][ C1] ? rcu_is_watching+0x15/0xd0 [ 19.106535][ C1] __dev_queue_xmit+0xbf4/0x1b60 [ 19.106537][ C1] ? __lock_acquire+0x508/0xc10 [ 19.106539][ C1] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 19.106541][ C1] ? find_held_lock+0x2b/0x80 [ 19.106543][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 19.106545][ C1] ? ___neigh_create+0x811/0x1070 [ 19.106547][ C1] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 19.106549][ C1] ip_finish_output2+0x5b9/0x1bc0 [ 19.106552][ C1] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 19.106554][ C1] ? ip4_dst_hoplimit+0x320/0x320 [ 19.106556][ C1] ? rcu_is_watching+0x15/0xd0 [ 19.106558][ C1] ip_output+0x1ca/0x660 [ 19.106560][ C1] ? ip_finish_output+0x460/0x460 [ 19.106561][ C1] ? ip4_frag_init+0x720/0x720 [ 19.106563][ C1] ? ip_forward+0xfa7/0x1570 [ 19.106565][ C1] ? process_backlog+0x561/0x1490 [ 19.106567][ C1] ip_rcv+0xdc/0x3d0 [ 19.106568][ C1] ? ip_local_deliver+0x4c0/0x4c0 [ 19.106571][ C1] ? mark_usage+0x61/0x170 [ 19.106572][ C1] ? __lock_acquire+0x508/0xc10 [ 19.106574][ C1] __netif_receive_skb_one_core+0xfc/0x180 [ 19.106576][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 19.106577][ C1] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 19.106579][ C1] ? rcu_is_watching+0x15/0xd0 [ 19.106582][ C1] process_backlog+0x2bc/0x1490 [ 19.106583][ C1] ? try_to_wake_up+0x14a/0xfb0 [ 19.106586][ C1] __napi_poll+0xa7/0x3b0 [ 19.106587][ C1] net_rx_action+0x513/0xf50 [ 19.106589][ C1] ? rcu_lockdep_current_cpu_online+0x39/0x1b0 [ 19.106591][ C1] ? __napi_poll+0x3b0/0x3b0 [ 19.106592][ C1] ? validate_chain+0x2e0/0xc20 [ 19.106594][ C1] ? __lock_acquire+0x508/0xc10 [ 19.106596][ C1] ? do_raw_spin_lock+0x131/0x280 [ 19.106598][ C1] ? __rwlock_init+0x150/0x150 [ 19.106600][ C1] ? rcu_is_watching+0x15/0xd0 [ 19.106602][ C1] handle_softirqs+0x1d8/0x940 [ 19.106604][ C1] ? _local_bh_enable+0xd0/0xd0 [ 19.106605][ C1] ? do_raw_spin_unlock+0x59/0x250 [ 19.106607][ C1] ? _raw_spin_unlock+0x2d/0x50 [ 19.106609][ C1] do_softirq+0xa9/0xe0 [ 19.106610][ C1] [ 19.106611][ C1] [ 19.106611][ C1] ? __dev_queue_xmit+0x946/0x1b60 [ 19.106613][ C1] __local_bh_enable_ip+0x113/0x140 [ 19.106615][ C1] __dev_queue_xmit+0x95b/0x1b60 [ 19.106617][ C1] ? _copy_from_iter+0x1bb/0x1810 [ 19.106621][ C1] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 19.106623][ C1] ? net_dim+0x730/0xd70 [ 19.106625][ C1] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 19.106628][ C1] ? packet_release+0xc70/0xc70 [ 19.106630][ C1] packet_snd+0xfad/0x1990 [ 19.106633][ C1] ? tpacket_snd+0x19e0/0x19e0 [ 19.106635][ C1] ? __might_fault+0x97/0x140 [ 19.106638][ C1] ? __might_fault+0x97/0x140 [ 19.106639][ C1] ? __might_fault+0x97/0x140 [ 19.106641][ C1] __sys_sendto+0x2c9/0x400 [ 19.106643][ C1] ? __ia32_sys_getpeername+0xd0/0xd0 [ 19.106646][ C1] ? sock_ioctl+0x3cb/0x5f0 [ 19.106649][ C1] ? do_user_addr_fault+0x325/0xe30 [ 19.106652][ C1] __x64_sys_sendto+0xe4/0x1f0 [ 19.106654][ C1] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 19.106658][ C1] ? lockdep_hardirqs_on+0x8c/0x130 [ 19.106659][ C1] ? do_syscall_64+0x82/0x590 [ 19.106660][ C1] do_syscall_64+0x117/0x590 [ 19.106662][ C1] ? trace_hardirqs_off+0xd/0x30 [ 19.106663][ C1] ? exc_page_fault+0xee/0x100 [ 19.106665][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.106666][ C1] RIP: 0033:0x7f6412edb08e [ 19.106670][ C1] 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 [ 19.106671][ C1] RSP: 002b:00007ffc0a68ff80 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 19.106674][ C1] RAX: ffffffffffffffda RBX: 000055e4d12fdb22 RCX: 00007f6412edb08e [ 19.106675][ C1] RDX: 0000000000000062 RSI: 000055e4d12fdb22 RDI: 0000000000000005 [ 19.106676][ C1] RBP: 00007ffc0a68ff90 R08: 00007ffc0a68ffe0 R09: 0000000000000014 [ 19.106677][ C1] R10: 0000000000000000 R11: 0000000000000202 R12: 000055e4d12fd830 [ 19.106678][ C1] R13: 0000000000000062 R14: 0000000000000005 R15: 000055e4d12fd830 [ 19.106680][ C1]