[ 31.890853][ T322] 8021q: 802.1Q VLAN Support v1.8 [ 32.397269][ T327] gre: GRE over IPv4 demultiplexor driver [ 32.451494][ T327] ip6_gre: GRE over IPv6 tunneling driver [ 32.650622][ T331] ip (331) used greatest stack depth: 23944 bytes left [ 43.616692][ T402] GACT probability NOT on [ 44.150049][ C1] [ 44.150176][ C1] ======================================================== [ 44.150436][ C1] WARNING: possible irq lock inversion dependency detected [ 44.150691][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.150868][ C1] -------------------------------------------------------- [ 44.151116][ C1] mausezahn/405 just changed the state of lock: [ 44.151325][ C1] ffff888005613d80 (&ndev->lock){++.-}-{2:2}, at: ipv6_get_lladdr+0xa9/0x3e0 [ 44.151636][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.151885][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.151889][ C1] [ 44.151889][ C1] [ 44.151889][ C1] and interrupts could create inverse lock ordering between them. [ 44.151889][ C1] [ 44.152506][ C1] [ 44.152506][ C1] other info that might help us debug this: [ 44.152751][ C1] Possible interrupt unsafe locking scenario: [ 44.152751][ C1] [ 44.153006][ C1] CPU0 CPU1 [ 44.153179][ C1] ---- ---- [ 44.153344][ C1] lock(&p->alloc_lock); [ 44.153483][ C1] local_irq_disable(); [ 44.153696][ C1] lock(&ndev->lock); [ 44.153903][ C1] lock(&p->alloc_lock); [ 44.154110][ C1] [ 44.154236][ C1] lock(&ndev->lock); [ 44.154362][ C1] [ 44.154362][ C1] *** DEADLOCK *** [ 44.154362][ C1] [ 44.154611][ C1] 5 locks held by mausezahn/405: [ 44.154779][ C1] #0: ffffffffad7522e0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x1f8/0x670 [ 44.155083][ C1] #1: ffffffffad7522e0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0x262/0x18e0 [ 44.155376][ C1] #2: ffffffffad752280 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1dd/0x16d0 [ 44.155676][ C1] #3: ffffffffad7522e0 (rcu_read_lock){....}-{1:2}, at: ip6_finish_output2+0x2c4/0xf80 [ 44.155976][ C1] #4: ffffffffad7522e0 (rcu_read_lock){....}-{1:2}, at: ipv6_get_lladdr+0x39/0x3e0 [ 44.156272][ C1] [ 44.156272][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.156563][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.156736][ C1] HARDIRQ-ON-W at: [ 44.156864][ C1] __lock_acquire+0x797/0x1570 [ 44.157082][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.157295][ C1] _raw_spin_lock+0x30/0x40 [ 44.157510][ C1] set_mems_allowed+0x1d/0x210 [ 44.157722][ C1] kernel_init_freeable+0x72/0x310 [ 44.157935][ C1] kernel_init+0x20/0x200 [ 44.158147][ C1] ret_from_fork+0x31/0x70 [ 44.158363][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.158574][ C1] SOFTIRQ-ON-W at: [ 44.158701][ C1] __lock_acquire+0x797/0x1570 [ 44.158910][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.159119][ C1] _raw_spin_lock+0x30/0x40 [ 44.159331][ C1] set_mems_allowed+0x1d/0x210 [ 44.159541][ C1] kernel_init_freeable+0x72/0x310 [ 44.159757][ C1] kernel_init+0x20/0x200 [ 44.159973][ C1] ret_from_fork+0x31/0x70 [ 44.160186][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.160405][ C1] INITIAL USE at: [ 44.160531][ C1] __lock_acquire+0x797/0x1570 [ 44.160743][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.160958][ C1] _raw_spin_lock+0x30/0x40 [ 44.161170][ C1] set_mems_allowed+0x1d/0x210 [ 44.161379][ C1] kernel_init_freeable+0x72/0x310 [ 44.161591][ C1] kernel_init+0x20/0x200 [ 44.161808][ C1] ret_from_fork+0x31/0x70 [ 44.162018][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.162235][ C1] } [ 44.162323][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.162577][ C1] ... acquired at: [ 44.162710][ C1] __lock_acquire+0xaf0/0x1570 [ 44.162881][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.163051][ C1] _raw_spin_lock+0x30/0x40 [ 44.163216][ C1] __get_task_comm+0x27/0x70 [ 44.163384][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.163557][ C1] netdev_get_by_index+0x5e/0x80 [ 44.163727][ C1] fib6_nh_init+0x3d8/0x15b0 [ 44.163900][ C1] ip6_route_info_create+0xf18/0x17d0 [ 44.164068][ C1] addrconf_f6i_alloc+0x265/0x560 [ 44.164238][ C1] __ipv6_dev_ac_inc+0x25f/0xb10 [ 44.164415][ C1] addrconf_join_anycast+0x1c0/0x220 [ 44.164583][ C1] __ipv6_ifa_notify+0x6b3/0xaf0 [ 44.164752][ C1] add_addr+0x1fb/0x2d0 [ 44.164885][ C1] add_v4_addrs+0x400/0x800 [ 44.165053][ C1] addrconf_gre_config+0x69/0x140 [ 44.165224][ C1] addrconf_notify+0xb0e/0xd60 [ 44.165396][ C1] notifier_call_chain+0xcd/0x150 [ 44.165564][ C1] __dev_notify_flags+0xe6/0x250 [ 44.165733][ C1] dev_change_flags+0xec/0x160 [ 44.165903][ C1] do_setlink+0x7d6/0x21e0 [ 44.166071][ C1] __rtnl_newlink+0xaa7/0xd80 [ 44.166243][ C1] rtnl_newlink+0x63/0xa0 [ 44.166414][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.166583][ C1] netlink_rcv_skb+0x130/0x360 [ 44.166755][ C1] netlink_unicast+0x449/0x710 [ 44.166921][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.167089][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.167259][ C1] ___sys_sendmsg+0xee/0x170 [ 44.167427][ C1] __sys_sendmsg+0xcd/0x170 [ 44.167594][ C1] do_syscall_64+0xc6/0x1e0 [ 44.167767][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.167981][ C1] [ 44.168071][ C1] -> (&ndev->lock){++.-}-{2:2} { [ 44.168241][ C1] HARDIRQ-ON-W at: [ 44.168368][ C1] __lock_acquire+0x797/0x1570 [ 44.168580][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.168793][ C1] _raw_write_lock_bh+0x38/0x50 [ 44.169004][ C1] addrconf_permanent_addr+0x6e/0x670 [ 44.169219][ C1] addrconf_notify+0x749/0xd60 [ 44.169429][ C1] notifier_call_chain+0xcd/0x150 [ 44.169636][ C1] __dev_notify_flags+0xe6/0x250 [ 44.169846][ C1] dev_change_flags+0xec/0x160 [ 44.170064][ C1] do_setlink+0x7d6/0x21e0 [ 44.170279][ C1] __rtnl_newlink+0xaa7/0xd80 [ 44.170502][ C1] rtnl_newlink+0x63/0xa0 [ 44.170712][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.170924][ C1] netlink_rcv_skb+0x130/0x360 [ 44.171132][ C1] netlink_unicast+0x449/0x710 [ 44.171342][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.171548][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.171762][ C1] ___sys_sendmsg+0xee/0x170 [ 44.171977][ C1] __sys_sendmsg+0xcd/0x170 [ 44.172185][ C1] do_syscall_64+0xc6/0x1e0 [ 44.172510][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.172762][ C1] HARDIRQ-ON-R at: [ 44.172889][ C1] __lock_acquire+0x797/0x1570 [ 44.173099][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.173430][ C1] _raw_read_lock_bh+0x44/0x80 [ 44.173638][ C1] inet6_fill_ifla6_attrs+0x516/0x740 [ 44.173850][ C1] inet6_fill_link_af+0x5e/0xe0 [ 44.174282][ C1] rtnl_fill_ifinfo+0x1612/0x29e0 [ 44.174492][ C1] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 44.174699][ C1] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 44.175065][ C1] rtmsg_ifinfo+0x5b/0xa0 [ 44.175274][ C1] register_netdevice+0x1177/0x1690 [ 44.175484][ C1] register_netdev+0x20/0x40 [ 44.175694][ C1] sit_init_net+0x250/0x4f0 [ 44.176019][ C1] ops_init+0x9b/0x560 [ 44.176186][ C1] register_pernet_operations+0x2db/0x710 [ 44.176436][ C1] register_pernet_device+0x2a/0x60 [ 44.176656][ C1] sit_init+0x23/0xe0 [ 44.176826][ C1] do_one_initcall+0x8d/0x1e0 [ 44.177035][ C1] do_initcalls+0x1b2/0x3e0 [ 44.177244][ C1] kernel_init_freeable+0x232/0x310 [ 44.177567][ C1] kernel_init+0x20/0x200 [ 44.177778][ C1] ret_from_fork+0x31/0x70 [ 44.177995][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.178319][ C1] IN-SOFTIRQ-R at: [ 44.178445][ C1] __lock_acquire+0x797/0x1570 [ 44.178654][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.178863][ C1] _raw_read_lock_bh+0x44/0x80 [ 44.179184][ C1] ipv6_get_lladdr+0xa9/0x3e0 [ 44.179403][ C1] ndisc_send_ns+0xe7/0x100 [ 44.179620][ C1] ndisc_solicit+0x2ae/0x4d0 [ 44.179947][ C1] neigh_probe+0xaa/0xf0 [ 44.180163][ C1] __neigh_event_send+0x7af/0xfe0 [ 44.180382][ C1] neigh_resolve_output+0x470/0x7c0 [ 44.180597][ C1] ip6_finish_output2+0x4ab/0xf80 [ 44.180806][ C1] ip6_finish_output+0x4ed/0xd30 [ 44.181022][ C1] ip6_output+0x1f3/0x770 [ 44.181231][ C1] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 44.181598][ C1] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 44.181854][ C1] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 44.182067][ C1] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 44.182436][ C1] dev_hard_start_xmit+0x10e/0x360 [ 44.182652][ C1] __dev_queue_xmit+0xe69/0x16d0 [ 44.182859][ C1] ip_finish_output2+0x616/0x18e0 [ 44.183178][ C1] ip_output+0x16b/0x4f0 [ 44.183389][ C1] NF_HOOK.constprop.0+0x7e/0x320 [ 44.183598][ C1] ip_rcv+0x62f/0x740 [ 44.183767][ C1] __netif_receive_skb_one_core+0x166/0x1b0 [ 44.184164][ C1] process_backlog+0x103/0x670 [ 44.184446][ C1] __napi_poll.constprop.0+0xa2/0x460 [ 44.184719][ C1] net_rx_action+0x49f/0xc00 [ 44.185055][ C1] __do_softirq+0x1f8/0x5df [ 44.185277][ C1] do_softirq+0x4d/0xa0 [ 44.185488][ C1] __local_bh_enable_ip+0xf6/0x120 [ 44.185707][ C1] __dev_queue_xmit+0x6ac/0x16d0 [ 44.186041][ C1] packet_snd+0xd08/0x1840 [ 44.186262][ C1] __sys_sendto+0x37d/0x410 [ 44.186473][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.186684][ C1] do_syscall_64+0xc6/0x1e0 [ 44.186893][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.187155][ C1] INITIAL USE at: [ 44.187288][ C1] __lock_acquire+0x797/0x1570 [ 44.187612][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.187823][ C1] _raw_write_lock_bh+0x38/0x50 [ 44.188032][ C1] addrconf_permanent_addr+0x6e/0x670 [ 44.188362][ C1] addrconf_notify+0x749/0xd60 [ 44.188573][ C1] notifier_call_chain+0xcd/0x150 [ 44.188792][ C1] __dev_notify_flags+0xe6/0x250 [ 44.189128][ C1] dev_change_flags+0xec/0x160 [ 44.189340][ C1] do_setlink+0x7d6/0x21e0 [ 44.189550][ C1] __rtnl_newlink+0xaa7/0xd80 [ 44.189764][ C1] rtnl_newlink+0x63/0xa0 [ 44.190092][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.190301][ C1] netlink_rcv_skb+0x130/0x360 [ 44.190530][ C1] netlink_unicast+0x449/0x710 [ 44.190852][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.191067][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.191276][ C1] ___sys_sendmsg+0xee/0x170 [ 44.191487][ C1] __sys_sendmsg+0xcd/0x170 [ 44.191695][ C1] do_syscall_64+0xc6/0x1e0 [ 44.191909][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.192178][ C1] INITIAL READ USE at: [ 44.192418][ C1] __lock_acquire+0x797/0x1570 [ 44.192630][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.192843][ C1] _raw_read_lock_bh+0x44/0x80 [ 44.193064][ C1] inet6_fill_ifla6_attrs+0x516/0x740 [ 44.193441][ C1] inet6_fill_link_af+0x5e/0xe0 [ 44.193659][ C1] rtnl_fill_ifinfo+0x1612/0x29e0 [ 44.193870][ C1] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 44.194263][ C1] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 44.194517][ C1] rtmsg_ifinfo+0x5b/0xa0 [ 44.194728][ C1] register_netdevice+0x1177/0x1690 [ 44.195101][ C1] register_netdev+0x20/0x40 [ 44.195310][ C1] sit_init_net+0x250/0x4f0 [ 44.195523][ C1] ops_init+0x9b/0x560 [ 44.195735][ C1] register_pernet_operations+0x2db/0x710 [ 44.195984][ C1] register_pernet_device+0x2a/0x60 [ 44.196233][ C1] sit_init+0x23/0xe0 [ 44.196564][ C1] do_one_initcall+0x8d/0x1e0 [ 44.196775][ C1] do_initcalls+0x1b2/0x3e0 [ 44.196987][ C1] kernel_init_freeable+0x232/0x310 [ 44.197354][ C1] kernel_init+0x20/0x200 [ 44.197565][ C1] ret_from_fork+0x31/0x70 [ 44.197779][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.197995][ C1] } [ 44.198191][ C1] ... key at: [] __key.37+0x0/0x40 [ 44.198444][ C1] ... acquired at: [ 44.198569][ C1] mark_lock+0x28d/0x3e0 [ 44.198740][ C1] mark_usage+0xd9/0x2a0 [ 44.199020][ C1] __lock_acquire+0x797/0x1570 [ 44.199188][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.199357][ C1] _raw_read_lock_bh+0x44/0x80 [ 44.199524][ C1] ipv6_get_lladdr+0xa9/0x3e0 [ 44.199808][ C1] ndisc_send_ns+0xe7/0x100 [ 44.199979][ C1] ndisc_solicit+0x2ae/0x4d0 [ 44.200147][ C1] neigh_probe+0xaa/0xf0 [ 44.200318][ C1] __neigh_event_send+0x7af/0xfe0 [ 44.200501][ C1] neigh_resolve_output+0x470/0x7c0 [ 44.200778][ C1] ip6_finish_output2+0x4ab/0xf80 [ 44.200945][ C1] ip6_finish_output+0x4ed/0xd30 [ 44.201112][ C1] ip6_output+0x1f3/0x770 [ 44.201283][ C1] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 44.201608][ C1] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 44.201822][ C1] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 44.201995][ C1] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 44.202317][ C1] dev_hard_start_xmit+0x10e/0x360 [ 44.202491][ C1] __dev_queue_xmit+0xe69/0x16d0 [ 44.202659][ C1] ip_finish_output2+0x616/0x18e0 [ 44.202831][ C1] ip_output+0x16b/0x4f0 [ 44.202998][ C1] NF_HOOK.constprop.0+0x7e/0x320 [ 44.203278][ C1] ip_rcv+0x62f/0x740 [ 44.203405][ C1] __netif_receive_skb_one_core+0x166/0x1b0 [ 44.203613][ C1] process_backlog+0x103/0x670 [ 44.203784][ C1] __napi_poll.constprop.0+0xa2/0x460 [ 44.204063][ C1] net_rx_action+0x49f/0xc00 [ 44.204230][ C1] __do_softirq+0x1f8/0x5df [ 44.204402][ C1] do_softirq+0x4d/0xa0 [ 44.204529][ C1] __local_bh_enable_ip+0xf6/0x120 [ 44.204805][ C1] __dev_queue_xmit+0x6ac/0x16d0 [ 44.204972][ C1] packet_snd+0xd08/0x1840 [ 44.205141][ C1] __sys_sendto+0x37d/0x410 [ 44.205309][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.205476][ C1] do_syscall_64+0xc6/0x1e0 [ 44.205758][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.205974][ C1] [ 44.206059][ C1] [ 44.206059][ C1] stack backtrace: [ 44.206269][ C1] CPU: 1 PID: 405 Comm: mausezahn Not tainted 6.9.0-rc1-virtme #1 [ 44.206634][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.207007][ C1] Call Trace: [ 44.207137][ C1] [ 44.207344][ C1] dump_stack_lvl+0x82/0xd0 [ 44.207518][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.207735][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.207946][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.208248][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.208416][ C1] ? arch_stack_walk+0xa2/0xf0 [ 44.208587][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.208758][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.209039][ C1] ? stack_trace_save+0x94/0xd0 [ 44.209210][ C1] ? save_trace+0x8f/0x5b0 [ 44.209379][ C1] mark_lock+0x28d/0x3e0 [ 44.209513][ C1] mark_usage+0xd9/0x2a0 [ 44.209640][ C1] __lock_acquire+0x797/0x1570 [ 44.209921][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.210087][ C1] ? ipv6_get_lladdr+0xa9/0x3e0 [ 44.210255][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.210427][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.210594][ C1] ? ipv6_get_lladdr+0xa9/0x3e0 [ 44.210767][ C1] ? lock_acquire+0x32/0xc0 [ 44.210935][ C1] ? ipv6_get_lladdr+0xa9/0x3e0 [ 44.211102][ C1] _raw_read_lock_bh+0x44/0x80 [ 44.211270][ C1] ? ipv6_get_lladdr+0xa9/0x3e0 [ 44.211435][ C1] ipv6_get_lladdr+0xa9/0x3e0 [ 44.211601][ C1] ndisc_send_ns+0xe7/0x100 [ 44.211775][ C1] ? __pfx_ndisc_send_ns+0x10/0x10 [ 44.211942][ C1] ? __ipv6_chk_addr_and_flags+0x393/0x650 [ 44.212261][ C1] ndisc_solicit+0x2ae/0x4d0 [ 44.212433][ C1] ? __pfx_ndisc_solicit+0x10/0x10 [ 44.212600][ C1] ? neigh_probe+0x57/0xf0 [ 44.212771][ C1] neigh_probe+0xaa/0xf0 [ 44.213017][ C1] __neigh_event_send+0x7af/0xfe0 [ 44.213184][ C1] ? do_raw_write_lock+0xe1/0x3b0 [ 44.213350][ C1] ? __pfx_do_raw_write_lock+0x10/0x10 [ 44.213518][ C1] neigh_resolve_output+0x470/0x7c0 [ 44.213685][ C1] ? __local_bh_enable_ip+0xa6/0x120 [ 44.213854][ C1] ? ___neigh_create+0x7c6/0xe10 [ 44.214023][ C1] ip6_finish_output2+0x4ab/0xf80 [ 44.214191][ C1] ip6_finish_output+0x4ed/0xd30 [ 44.214466][ C1] ? __pfx_flow_hash_from_keys+0x10/0x10 [ 44.214635][ C1] ip6_output+0x1f3/0x770 [ 44.214763][ C1] ? __pfx_ip6_output+0x10/0x10 [ 44.214931][ C1] ? ip6_make_flowlabel.constprop.0+0x1c4/0x2f0 [ip6_tunnel] [ 44.215299][ C1] ? __pfx_ip6_make_flowlabel.constprop.0+0x10/0x10 [ip6_tunnel] [ 44.215557][ C1] ? ip6_local_out+0x25/0x3b0 [ 44.215728][ C1] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 44.215940][ C1] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 44.216263][ C1] ? __kasan_kmalloc+0x7f/0x90 [ 44.216431][ C1] ? trace_kmalloc+0x2a/0xe0 [ 44.216599][ C1] ? sk_getsockopt+0x2048/0x2c40 [ 44.216767][ C1] ? __pfx_ip6_tnl_xmit+0x10/0x10 [ip6_tunnel] [ 44.217092][ C1] ? pskb_expand_head+0x4ac/0x1020 [ 44.217262][ C1] ? __pfx_pskb_expand_head+0x10/0x10 [ 44.217428][ C1] ? __ipv6_chk_addr_and_flags+0x38e/0x650 [ 44.217638][ C1] ? __gre6_xmit+0x706/0x1960 [ip6_gre] [ 44.217810][ C1] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 44.217981][ C1] ? __pfx___gre6_xmit+0x10/0x10 [ip6_gre] [ 44.218196][ C1] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 44.218522][ C1] ? __pfx_ip6gre_tunnel_xmit+0x10/0x10 [ip6_gre] [ 44.218738][ C1] ? find_held_lock+0x2c/0x110 [ 44.218904][ C1] ? __lock_release+0x103/0x460 [ 44.219072][ C1] ? dev_queue_xmit_nit+0x775/0xad0 [ 44.219351][ C1] ? dev_queue_xmit_nit+0x759/0xad0 [ 44.219517][ C1] ? __pfx_qdisc_pkt_len_init+0x10/0x10 [ 44.219686][ C1] ? dev_queue_xmit_nit+0x775/0xad0 [ 44.219852][ C1] dev_hard_start_xmit+0x10e/0x360 [ 44.220024][ C1] ? validate_xmit_skb.constprop.0+0x2a/0x4f0 [ 44.220349][ C1] __dev_queue_xmit+0xe69/0x16d0 [ 44.220519][ C1] ? do_raw_write_lock+0x122/0x3b0 [ 44.220686][ C1] ? __pfx_do_raw_write_lock+0x10/0x10 [ 44.220853][ C1] ? __pfx___dev_queue_xmit+0x10/0x10 [ 44.221129][ C1] ? ___neigh_create+0x7c6/0xe10 [ 44.221294][ C1] ? ___neigh_create+0x7c6/0xe10 [ 44.221463][ C1] ip_finish_output2+0x616/0x18e0 [ 44.221638][ C1] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.221962][ C1] ? __pfx_ip_finish_output2+0x10/0x10 [ 44.222129][ C1] ? __ip_finish_output+0x10f/0x770 [ 44.222295][ C1] ip_output+0x16b/0x4f0 [ 44.222420][ C1] ? __pfx_ip_output+0x10/0x10 [ 44.222587][ C1] ? pskb_expand_head+0x485/0x1020 [ 44.222753][ C1] ? ip_route_input_noref+0x10e/0x230 [ 44.222927][ C1] NF_HOOK.constprop.0+0x7e/0x320 [ 44.223096][ C1] ? __pfx_NF_HOOK.constprop.0+0x10/0x10 [ 44.223267][ C1] ? ip_forward+0xdc8/0x1a10 [ 44.223436][ C1] ip_rcv+0x62f/0x740 [ 44.223562][ C1] ? __pfx_ip_rcv+0x10/0x10 [ 44.223730][ C1] ? lock_acquire.part.0+0xeb/0x330 [ 44.223897][ C1] ? process_backlog+0x1f8/0x670 [ 44.224175][ C1] ? __pfx_ip_rcv+0x10/0x10 [ 44.224342][ C1] __netif_receive_skb_one_core+0x166/0x1b0 [ 44.224559][ C1] ? __pfx___netif_receive_skb_one_core+0x10/0x10 [ 44.224768][ C1] ? process_backlog+0x1f8/0x670 [ 44.225052][ C1] ? lock_acquire+0x32/0xc0 [ 44.225218][ C1] ? process_backlog+0x1f8/0x670 [ 44.225387][ C1] process_backlog+0x103/0x670 [ 44.225556][ C1] ? __pfx___lock_release+0x10/0x10 [ 44.225725][ C1] __napi_poll.constprop.0+0xa2/0x460 [ 44.225894][ C1] net_rx_action+0x49f/0xc00 [ 44.226070][ C1] ? __pfx_net_rx_action+0x10/0x10 [ 44.226237][ C1] ? hlock_class+0x4e/0x130 [ 44.226518][ C1] __do_softirq+0x1f8/0x5df [ 44.226687][ C1] ? __dev_queue_xmit+0x697/0x16d0 [ 44.226853][ C1] do_softirq+0x4d/0xa0 [ 44.226979][ C1] [ 44.227072][ C1] [ 44.227158][ C1] __local_bh_enable_ip+0xf6/0x120 [ 44.227438][ C1] ? __dev_queue_xmit+0x697/0x16d0 [ 44.227606][ C1] __dev_queue_xmit+0x6ac/0x16d0 [ 44.227772][ C1] ? packet_parse_headers+0x231/0x9d0 [ 44.227937][ C1] ? packet_parse_headers+0x231/0x9d0 [ 44.228217][ C1] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 44.228386][ C1] ? __pfx___dev_queue_xmit+0x10/0x10 [ 44.228553][ C1] ? dev_get_by_index+0x177/0x270 [ 44.228720][ C1] packet_snd+0xd08/0x1840 [ 44.229002][ C1] ? __pfx___lock_release+0x10/0x10 [ 44.229176][ C1] ? __pfx_packet_snd+0x10/0x10 [ 44.229343][ C1] ? __might_fault+0xc3/0x170 [ 44.229510][ C1] ? trace_raw_output_mmap_lock_acquire_returned+0x60/0x1e0 [ 44.229757][ C1] ? __might_fault+0x11b/0x170 [ 44.229924][ C1] __sys_sendto+0x37d/0x410 [ 44.230091][ C1] ? __pfx___sys_sendto+0x10/0x10 [ 44.230261][ C1] ? sock_ioctl+0x3bc/0x590 [ 44.230545][ C1] ? __might_fault+0xc3/0x170 [ 44.230717][ C1] ? trace_rseq_update+0xd2/0x130 [ 44.230887][ C1] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 44.231098][ C1] ? __pfx___rseq_handle_notify_resume+0x10/0x10 [ 44.231418][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.231584][ C1] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 44.231793][ C1] do_syscall_64+0xc6/0x1e0 [ 44.231959][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.232277][ C1] RIP: 0033:0x7fceb45de85a [ 44.232459][ C1] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 44.233162][ C1] RSP: 002b:00007ffd0c789488 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 44.233421][ C1] RAX: ffffffffffffffda RBX: 00000000279919d0 RCX: 00007fceb45de85a [ 44.233677][ C1] RDX: 0000000000000062 RSI: 00000000279915c2 RDI: 0000000000000005 [ 44.234055][ C1] RBP: 00000000279915c2 R08: 00007ffd0c789490 R09: 0000000000000014 [ 44.234306][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 44.234557][ C1] R13: 0000000000000062 R14: 00007ffd0c789490 R15: 0000000000000000 [ 44.234812][ C1]