[ 32.512942][ T319] 8021q: 802.1Q VLAN Support v1.8 [ 33.036406][ T324] gre: GRE over IPv4 demultiplexor driver [ 33.094892][ T324] ip6_gre: GRE over IPv6 tunneling driver [ 36.007075][ T356] ip (356) used greatest stack depth: 24152 bytes left [ 44.556717][ T400] GACT probability NOT on [ 45.198382][ C3] [ 45.198509][ C3] ======================================================== [ 45.198780][ C3] WARNING: possible irq lock inversion dependency detected [ 45.199032][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.199204][ C3] -------------------------------------------------------- [ 45.199449][ C3] mausezahn/403 just changed the state of lock: [ 45.199681][ C3] ffff888005d7a580 (&ndev->lock){++.-}-{2:2}, at: ipv6_get_lladdr+0xa9/0x3e0 [ 45.199995][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.200241][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.200245][ C3] [ 45.200245][ C3] [ 45.200245][ C3] and interrupts could create inverse lock ordering between them. [ 45.200245][ C3] [ 45.200861][ C3] [ 45.200861][ C3] other info that might help us debug this: [ 45.201145][ C3] Possible interrupt unsafe locking scenario: [ 45.201145][ C3] [ 45.201429][ C3] CPU0 CPU1 [ 45.201603][ C3] ---- ---- [ 45.201781][ C3] lock(&p->alloc_lock); [ 45.201946][ C3] local_irq_disable(); [ 45.202178][ C3] lock(&ndev->lock); [ 45.202406][ C3] lock(&p->alloc_lock); [ 45.202629][ C3] [ 45.202755][ C3] lock(&ndev->lock); [ 45.202888][ C3] [ 45.202888][ C3] *** DEADLOCK *** [ 45.202888][ C3] [ 45.203149][ C3] 5 locks held by mausezahn/403: [ 45.203343][ C3] #0: ffffffffa53522e0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x1f8/0x670 [ 45.203661][ C3] #1: ffffffffa53522e0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0x262/0x18e0 [ 45.203985][ C3] #2: ffffffffa5352280 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1dd/0x16d0 [ 45.204284][ C3] #3: ffffffffa53522e0 (rcu_read_lock){....}-{1:2}, at: ip6_finish_output2+0x2c4/0xf80 [ 45.204604][ C3] #4: ffffffffa53522e0 (rcu_read_lock){....}-{1:2}, at: ipv6_get_lladdr+0x39/0x3e0 [ 45.204911][ C3] [ 45.204911][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.205229][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.205402][ C3] HARDIRQ-ON-W at: [ 45.205549][ C3] __lock_acquire+0x797/0x1570 [ 45.205774][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.205993][ C3] _raw_spin_lock+0x30/0x40 [ 45.206224][ C3] set_mems_allowed+0x1d/0x210 [ 45.206457][ C3] kernel_init_freeable+0x72/0x310 [ 45.206672][ C3] kernel_init+0x20/0x200 [ 45.206894][ C3] ret_from_fork+0x31/0x70 [ 45.207130][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.207342][ C3] SOFTIRQ-ON-W at: [ 45.207492][ C3] __lock_acquire+0x797/0x1570 [ 45.207718][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.207936][ C3] _raw_spin_lock+0x30/0x40 [ 45.208165][ C3] set_mems_allowed+0x1d/0x210 [ 45.208385][ C3] kernel_init_freeable+0x72/0x310 [ 45.208617][ C3] kernel_init+0x20/0x200 [ 45.208850][ C3] ret_from_fork+0x31/0x70 [ 45.209069][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.209306][ C3] INITIAL USE at: [ 45.209438][ C3] __lock_acquire+0x797/0x1570 [ 45.209682][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.209907][ C3] _raw_spin_lock+0x30/0x40 [ 45.210137][ C3] set_mems_allowed+0x1d/0x210 [ 45.210353][ C3] kernel_init_freeable+0x72/0x310 [ 45.210616][ C3] kernel_init+0x20/0x200 [ 45.210828][ C3] ret_from_fork+0x31/0x70 [ 45.211058][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.211291][ C3] } [ 45.211377][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.211673][ C3] ... acquired at: [ 45.211804][ C3] __lock_acquire+0xaf0/0x1570 [ 45.211975][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.212146][ C3] _raw_spin_lock+0x30/0x40 [ 45.212318][ C3] __get_task_comm+0x27/0x70 [ 45.212488][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.212664][ C3] netdev_get_by_index+0x5e/0x80 [ 45.212834][ C3] fib6_nh_init+0x3d8/0x15b0 [ 45.213004][ C3] ip6_route_info_create+0xf18/0x17d0 [ 45.213177][ C3] addrconf_f6i_alloc+0x265/0x560 [ 45.213375][ C3] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.213549][ C3] addrconf_join_anycast+0x1c0/0x220 [ 45.213742][ C3] __ipv6_ifa_notify+0x6b3/0xaf0 [ 45.213912][ C3] addrconf_dad_completed+0x12b/0xe20 [ 45.214094][ C3] addrconf_dad_work+0x38c/0xab0 [ 45.214270][ C3] process_one_work+0xe2c/0x1730 [ 45.214467][ C3] worker_thread+0x587/0xd30 [ 45.214664][ C3] kthread+0x28a/0x350 [ 45.214797][ C3] ret_from_fork+0x31/0x70 [ 45.215008][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.215191][ C3] [ 45.215279][ C3] -> (&ndev->lock){++.-}-{2:2} { [ 45.215472][ C3] HARDIRQ-ON-W at: [ 45.215606][ C3] __lock_acquire+0x797/0x1570 [ 45.215845][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.216178][ C3] _raw_write_lock_bh+0x38/0x50 [ 45.216394][ C3] addrconf_permanent_addr+0x6e/0x670 [ 45.216608][ C3] addrconf_notify+0x749/0xd60 [ 45.216860][ C3] notifier_call_chain+0xcd/0x150 [ 45.217073][ C3] __dev_notify_flags+0xe6/0x250 [ 45.217293][ C3] dev_change_flags+0xec/0x160 [ 45.217505][ C3] do_setlink+0x7d6/0x21e0 [ 45.217853][ C3] __rtnl_newlink+0xaa7/0xd80 [ 45.218081][ C3] rtnl_newlink+0x63/0xa0 [ 45.218318][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.218643][ C3] netlink_rcv_skb+0x130/0x360 [ 45.218865][ C3] netlink_unicast+0x449/0x710 [ 45.219084][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.219297][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.219643][ C3] ___sys_sendmsg+0xee/0x170 [ 45.219855][ C3] __sys_sendmsg+0xcd/0x170 [ 45.220077][ C3] do_syscall_64+0xc6/0x1e0 [ 45.220401][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.220662][ C3] HARDIRQ-ON-R at: [ 45.220788][ C3] __lock_acquire+0x797/0x1570 [ 45.221000][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.221329][ C3] _raw_read_lock_bh+0x44/0x80 [ 45.221542][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.221757][ C3] inet6_fill_link_af+0x5e/0xe0 [ 45.221969][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.222183][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.222394][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.222874][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 45.223083][ C3] register_netdevice+0x1177/0x1690 [ 45.223291][ C3] register_netdev+0x20/0x40 [ 45.223502][ C3] sit_init_net+0x250/0x4f0 [ 45.223830][ C3] ops_init+0x9b/0x560 [ 45.223999][ C3] register_pernet_operations+0x2db/0x710 [ 45.224251][ C3] register_pernet_device+0x2a/0x60 [ 45.224586][ C3] sit_init+0x23/0xe0 [ 45.224763][ C3] do_one_initcall+0x8d/0x1e0 [ 45.224998][ C3] do_initcalls+0x1b2/0x3e0 [ 45.225231][ C3] kernel_init_freeable+0x232/0x310 [ 45.225602][ C3] kernel_init+0x20/0x200 [ 45.225841][ C3] ret_from_fork+0x31/0x70 [ 45.226073][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.226416][ C3] IN-SOFTIRQ-R at: [ 45.226544][ C3] __lock_acquire+0x797/0x1570 [ 45.226786][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.227001][ C3] _raw_read_lock_bh+0x44/0x80 [ 45.227327][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 45.227539][ C3] ndisc_send_ns+0xe7/0x100 [ 45.227777][ C3] ndisc_solicit+0x2ae/0x4d0 [ 45.228117][ C3] neigh_probe+0xaa/0xf0 [ 45.228339][ C3] __neigh_event_send+0x7af/0xfe0 [ 45.228581][ C3] neigh_resolve_output+0x470/0x7c0 [ 45.228803][ C3] ip6_finish_output2+0x4ab/0xf80 [ 45.229013][ C3] ip6_finish_output+0x4ed/0xd30 [ 45.229249][ C3] ip6_output+0x1f3/0x770 [ 45.229484][ C3] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 45.229935][ C3] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 45.230217][ C3] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 45.230439][ C3] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 45.230861][ C3] dev_hard_start_xmit+0x10e/0x360 [ 45.231073][ C3] __dev_queue_xmit+0xe69/0x16d0 [ 45.231288][ C3] ip_finish_output2+0x616/0x18e0 [ 45.231617][ C3] ip_output+0x16b/0x4f0 [ 45.231864][ C3] NF_HOOK.constprop.0+0x7e/0x320 [ 45.232081][ C3] ip_rcv+0x62f/0x740 [ 45.232250][ C3] __netif_receive_skb_one_core+0x166/0x1b0 [ 45.232643][ C3] process_backlog+0x103/0x670 [ 45.232864][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 45.233090][ C3] net_rx_action+0x49f/0xc00 [ 45.233473][ C3] __do_softirq+0x1f8/0x5df [ 45.233700][ C3] do_softirq+0x4d/0xa0 [ 45.233919][ C3] __local_bh_enable_ip+0xf6/0x120 [ 45.234263][ C3] __dev_queue_xmit+0x6ac/0x16d0 [ 45.234475][ C3] packet_snd+0xd08/0x1840 [ 45.234703][ C3] __sys_sendto+0x37d/0x410 [ 45.234951][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.235278][ C3] do_syscall_64+0xc6/0x1e0 [ 45.235510][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.235764][ C3] INITIAL USE at: [ 45.235898][ C3] __lock_acquire+0x797/0x1570 [ 45.236107][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.236325][ C3] _raw_write_lock_bh+0x38/0x50 [ 45.236550][ C3] addrconf_permanent_addr+0x6e/0x670 [ 45.237017][ C3] addrconf_notify+0x749/0xd60 [ 45.237227][ C3] notifier_call_chain+0xcd/0x150 [ 45.237460][ C3] __dev_notify_flags+0xe6/0x250 [ 45.237793][ C3] dev_change_flags+0xec/0x160 [ 45.238035][ C3] do_setlink+0x7d6/0x21e0 [ 45.238274][ C3] __rtnl_newlink+0xaa7/0xd80 [ 45.238501][ C3] rtnl_newlink+0x63/0xa0 [ 45.238859][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.239089][ C3] netlink_rcv_skb+0x130/0x360 [ 45.239321][ C3] netlink_unicast+0x449/0x710 [ 45.239705][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.239920][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.240135][ C3] ___sys_sendmsg+0xee/0x170 [ 45.240459][ C3] __sys_sendmsg+0xcd/0x170 [ 45.240676][ C3] do_syscall_64+0xc6/0x1e0 [ 45.240891][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.241167][ C3] INITIAL READ USE at: [ 45.241422][ C3] __lock_acquire+0x797/0x1570 [ 45.241637][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.241871][ C3] _raw_read_lock_bh+0x44/0x80 [ 45.242295][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.242566][ C3] inet6_fill_link_af+0x5e/0xe0 [ 45.242829][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.243038][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.243439][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.243694][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 45.243903][ C3] register_netdevice+0x1177/0x1690 [ 45.244270][ C3] register_netdev+0x20/0x40 [ 45.244480][ C3] sit_init_net+0x250/0x4f0 [ 45.244688][ C3] ops_init+0x9b/0x560 [ 45.244898][ C3] register_pernet_operations+0x2db/0x710 [ 45.245153][ C3] register_pernet_device+0x2a/0x60 [ 45.245407][ C3] sit_init+0x23/0xe0 [ 45.245730][ C3] do_one_initcall+0x8d/0x1e0 [ 45.245940][ C3] do_initcalls+0x1b2/0x3e0 [ 45.246153][ C3] kernel_init_freeable+0x232/0x310 [ 45.246526][ C3] kernel_init+0x20/0x200 [ 45.246737][ C3] ret_from_fork+0x31/0x70 [ 45.246950][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.247271][ C3] } [ 45.247357][ C3] ... key at: [] __key.37+0x0/0x40 [ 45.247607][ C3] ... acquired at: [ 45.247732][ C3] mark_lock+0x28d/0x3e0 [ 45.247900][ C3] mark_usage+0xd9/0x2a0 [ 45.248189][ C3] __lock_acquire+0x797/0x1570 [ 45.248357][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.248523][ C3] _raw_read_lock_bh+0x44/0x80 [ 45.248691][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 45.248858][ C3] ndisc_send_ns+0xe7/0x100 [ 45.249024][ C3] ndisc_solicit+0x2ae/0x4d0 [ 45.249189][ C3] neigh_probe+0xaa/0xf0 [ 45.249357][ C3] __neigh_event_send+0x7af/0xfe0 [ 45.249647][ C3] neigh_resolve_output+0x470/0x7c0 [ 45.249818][ C3] ip6_finish_output2+0x4ab/0xf80 [ 45.249985][ C3] ip6_finish_output+0x4ed/0xd30 [ 45.250151][ C3] ip6_output+0x1f3/0x770 [ 45.250322][ C3] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 45.250793][ C3] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 45.251005][ C3] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 45.251177][ C3] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 45.251503][ C3] dev_hard_start_xmit+0x10e/0x360 [ 45.251671][ C3] __dev_queue_xmit+0xe69/0x16d0 [ 45.251841][ C3] ip_finish_output2+0x616/0x18e0 [ 45.252007][ C3] ip_output+0x16b/0x4f0 [ 45.252284][ C3] NF_HOOK.constprop.0+0x7e/0x320 [ 45.252452][ C3] ip_rcv+0x62f/0x740 [ 45.252578][ C3] __netif_receive_skb_one_core+0x166/0x1b0 [ 45.252787][ C3] process_backlog+0x103/0x670 [ 45.252956][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 45.253266][ C3] net_rx_action+0x49f/0xc00 [ 45.253433][ C3] __do_softirq+0x1f8/0x5df [ 45.253600][ C3] do_softirq+0x4d/0xa0 [ 45.253727][ C3] __local_bh_enable_ip+0xf6/0x120 [ 45.253893][ C3] __dev_queue_xmit+0x6ac/0x16d0 [ 45.254061][ C3] packet_snd+0xd08/0x1840 [ 45.254234][ C3] __sys_sendto+0x37d/0x410 [ 45.254401][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.254680][ C3] do_syscall_64+0xc6/0x1e0 [ 45.254849][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.255058][ C3] [ 45.255143][ C3] [ 45.255143][ C3] stack backtrace: [ 45.255348][ C3] CPU: 3 PID: 403 Comm: mausezahn Not tainted 6.9.0-rc1-virtme #1 [ 45.255707][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.256086][ C3] Call Trace: [ 45.256326][ C3] [ 45.256412][ C3] dump_stack_lvl+0x82/0xd0 [ 45.256584][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.256793][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.257003][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.257286][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.257452][ C3] ? arch_stack_walk+0xa2/0xf0 [ 45.257626][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.257794][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.257964][ C3] ? stack_trace_save+0x94/0xd0 [ 45.258152][ C3] ? save_trace+0x8f/0x5b0 [ 45.258323][ C3] mark_lock+0x28d/0x3e0 [ 45.258470][ C3] mark_usage+0xd9/0x2a0 [ 45.258598][ C3] __lock_acquire+0x797/0x1570 [ 45.258904][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.259091][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 45.259263][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.259450][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.259763][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 45.259951][ C3] ? lock_acquire+0x32/0xc0 [ 45.260121][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 45.260308][ C3] _raw_read_lock_bh+0x44/0x80 [ 45.260609][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 45.260778][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 45.260965][ C3] ndisc_send_ns+0xe7/0x100 [ 45.261135][ C3] ? __pfx_ndisc_send_ns+0x10/0x10 [ 45.261413][ C3] ? __ipv6_chk_addr_and_flags+0x393/0x650 [ 45.261623][ C3] ndisc_solicit+0x2ae/0x4d0 [ 45.261789][ C3] ? __pfx_ndisc_solicit+0x10/0x10 [ 45.261956][ C3] ? neigh_probe+0x57/0xf0 [ 45.262238][ C3] neigh_probe+0xaa/0xf0 [ 45.262367][ C3] __neigh_event_send+0x7af/0xfe0 [ 45.262534][ C3] ? do_raw_write_lock+0xe1/0x3b0 [ 45.262707][ C3] ? __pfx_do_raw_write_lock+0x10/0x10 [ 45.262875][ C3] neigh_resolve_output+0x470/0x7c0 [ 45.263159][ C3] ? __local_bh_enable_ip+0xa6/0x120 [ 45.263326][ C3] ? ___neigh_create+0x7c6/0xe10 [ 45.263495][ C3] ip6_finish_output2+0x4ab/0xf80 [ 45.263664][ C3] ip6_finish_output+0x4ed/0xd30 [ 45.263940][ C3] ? __pfx_flow_hash_from_keys+0x10/0x10 [ 45.264110][ C3] ip6_output+0x1f3/0x770 [ 45.264240][ C3] ? __pfx_ip6_output+0x10/0x10 [ 45.264405][ C3] ? ip6_make_flowlabel.constprop.0+0x1c4/0x2f0 [ip6_tunnel] [ 45.264772][ C3] ? __pfx_ip6_make_flowlabel.constprop.0+0x10/0x10 [ip6_tunnel] [ 45.265026][ C3] ? ip6_local_out+0x25/0x3b0 [ 45.265197][ C3] ip6tunnel_xmit.constprop.0+0x16b/0x360 [ip6_tunnel] [ 45.265409][ C3] ip6_tnl_xmit+0x1266/0x3490 [ip6_tunnel] [ 45.265733][ C3] ? __kasan_kmalloc+0x7f/0x90 [ 45.265902][ C3] ? trace_kmalloc+0x2a/0xe0 [ 45.266100][ C3] ? sk_getsockopt+0x2048/0x2c40 [ 45.266268][ C3] ? __pfx_ip6_tnl_xmit+0x10/0x10 [ip6_tunnel] [ 45.266651][ C3] ? pskb_expand_head+0x4ac/0x1020 [ 45.266821][ C3] ? __pfx_pskb_expand_head+0x10/0x10 [ 45.266987][ C3] ? __ipv6_chk_addr_and_flags+0x38e/0x650 [ 45.267308][ C3] ? __gre6_xmit+0x706/0x1960 [ip6_gre] [ 45.267484][ C3] __gre6_xmit+0x706/0x1960 [ip6_gre] [ 45.267675][ C3] ? __pfx___gre6_xmit+0x10/0x10 [ip6_gre] [ 45.267894][ C3] ip6gre_tunnel_xmit+0x920/0xf10 [ip6_gre] [ 45.268248][ C3] ? __pfx_ip6gre_tunnel_xmit+0x10/0x10 [ip6_gre] [ 45.268461][ C3] ? find_held_lock+0x2c/0x110 [ 45.268648][ C3] ? __lock_release+0x103/0x460 [ 45.268818][ C3] ? dev_queue_xmit_nit+0x775/0xad0 [ 45.269107][ C3] ? dev_queue_xmit_nit+0x759/0xad0 [ 45.269298][ C3] ? __pfx_qdisc_pkt_len_init+0x10/0x10 [ 45.269467][ C3] ? dev_queue_xmit_nit+0x775/0xad0 [ 45.269648][ C3] dev_hard_start_xmit+0x10e/0x360 [ 45.269842][ C3] ? validate_xmit_skb.constprop.0+0x2a/0x4f0 [ 45.270062][ C3] __dev_queue_xmit+0xe69/0x16d0 [ 45.270228][ C3] ? do_raw_write_lock+0x122/0x3b0 [ 45.270418][ C3] ? __pfx_do_raw_write_lock+0x10/0x10 [ 45.270758][ C3] ? __pfx___dev_queue_xmit+0x10/0x10 [ 45.270932][ C3] ? ___neigh_create+0x7c6/0xe10 [ 45.271123][ C3] ? ___neigh_create+0x7c6/0xe10 [ 45.271296][ C3] ip_finish_output2+0x616/0x18e0 [ 45.271465][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.271798][ C3] ? __pfx_ip_finish_output2+0x10/0x10 [ 45.271971][ C3] ? __ip_finish_output+0x10f/0x770 [ 45.272142][ C3] ip_output+0x16b/0x4f0 [ 45.272271][ C3] ? __pfx_ip_output+0x10/0x10 [ 45.272574][ C3] ? pskb_expand_head+0x485/0x1020 [ 45.272743][ C3] ? ip_route_input_noref+0x10e/0x230 [ 45.272912][ C3] NF_HOOK.constprop.0+0x7e/0x320 [ 45.273085][ C3] ? __pfx_NF_HOOK.constprop.0+0x10/0x10 [ 45.273366][ C3] ? ip_forward+0xdc8/0x1a10 [ 45.273541][ C3] ip_rcv+0x62f/0x740 [ 45.273682][ C3] ? __pfx_ip_rcv+0x10/0x10 [ 45.273855][ C3] ? lock_acquire.part.0+0xeb/0x330 [ 45.274022][ C3] ? process_backlog+0x1f8/0x670 [ 45.274299][ C3] ? __pfx_ip_rcv+0x10/0x10 [ 45.274467][ C3] __netif_receive_skb_one_core+0x166/0x1b0 [ 45.274675][ C3] ? __pfx___netif_receive_skb_one_core+0x10/0x10 [ 45.274993][ C3] ? process_backlog+0x1f8/0x670 [ 45.275163][ C3] ? lock_acquire+0x32/0xc0 [ 45.275329][ C3] ? process_backlog+0x1f8/0x670 [ 45.275501][ C3] process_backlog+0x103/0x670 [ 45.275668][ C3] ? find_held_lock+0x2c/0x110 [ 45.275974][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 45.276146][ C3] net_rx_action+0x49f/0xc00 [ 45.276318][ C3] ? __pfx_net_rx_action+0x10/0x10 [ 45.276537][ C3] __do_softirq+0x1f8/0x5df [ 45.276831][ C3] ? __dev_queue_xmit+0x697/0x16d0 [ 45.277006][ C3] do_softirq+0x4d/0xa0 [ 45.277133][ C3] [ 45.277240][ C3] [ 45.277327][ C3] __local_bh_enable_ip+0xf6/0x120 [ 45.277752][ C3] ? __dev_queue_xmit+0x697/0x16d0 [ 45.277924][ C3] __dev_queue_xmit+0x6ac/0x16d0 [ 45.278094][ C3] ? packet_parse_headers+0x231/0x9d0 [ 45.278271][ C3] ? packet_parse_headers+0x231/0x9d0 [ 45.278463][ C3] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 45.278768][ C3] ? __pfx___dev_queue_xmit+0x10/0x10 [ 45.278941][ C3] ? dev_get_by_index+0x177/0x270 [ 45.279125][ C3] packet_snd+0xd08/0x1840 [ 45.279294][ C3] ? __pfx___lock_release+0x10/0x10 [ 45.279592][ C3] ? __pfx_packet_snd+0x10/0x10 [ 45.279759][ C3] ? __might_fault+0xc3/0x170 [ 45.279930][ C3] ? trace_raw_output_mmap_lock_acquire_returned+0x60/0x1e0 [ 45.280193][ C3] ? __might_fault+0x11b/0x170 [ 45.280481][ C3] __sys_sendto+0x37d/0x410 [ 45.280653][ C3] ? __pfx___sys_sendto+0x10/0x10 [ 45.280824][ C3] ? sock_ioctl+0x3bc/0x590 [ 45.280998][ C3] ? __might_fault+0xc3/0x170 [ 45.281275][ C3] ? trace_rseq_update+0xd2/0x130 [ 45.281448][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 45.281655][ C3] ? __pfx___rseq_handle_notify_resume+0x10/0x10 [ 45.281868][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.282148][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 45.282369][ C3] do_syscall_64+0xc6/0x1e0 [ 45.282540][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.282752][ C3] RIP: 0033:0x7f6c1cf7e85a [ 45.282926][ C3] 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 [ 45.283650][ C3] RSP: 002b:00007ffe10acdba8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 45.283916][ C3] RAX: ffffffffffffffda RBX: 000000001cba99d0 RCX: 00007f6c1cf7e85a [ 45.284171][ C3] RDX: 0000000000000062 RSI: 000000001cba95c2 RDI: 0000000000000005 [ 45.284544][ C3] RBP: 000000001cba95c2 R08: 00007ffe10acdbb0 R09: 0000000000000014 [ 45.284797][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 45.285056][ C3] R13: 0000000000000062 R14: 00007ffe10acdbb0 R15: 0000000000000000 [ 45.285425][ C3]