[ 33.525655][ T545] ip6_gre: GRE over IPv6 tunneling driver [ 40.394490][ T642] GACT probability NOT on [ 40.514482][ C2] [ 40.514587][ C2] ======================================================== [ 40.514783][ C2] WARNING: possible irq lock inversion dependency detected [ 40.514963][ C2] 7.1.0-rc5-virtme #1 Not tainted [ 40.515088][ C2] -------------------------------------------------------- [ 40.515274][ C2] mausezahn/646 just changed the state of lock: [ 40.515442][ C2] ff1100000d455578 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 40.515667][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 40.515849][ C2] (acaddr_hash_lock){+.+.}-{3:3} [ 40.515852][ C2] [ 40.515852][ C2] [ 40.515852][ C2] and interrupts could create inverse lock ordering between them. [ 40.515852][ C2] [ 40.516315][ C2] [ 40.516315][ C2] other info that might help us debug this: [ 40.516494][ C2] Possible interrupt unsafe locking scenario: [ 40.516494][ C2] [ 40.516682][ C2] CPU0 CPU1 [ 40.516813][ C2] ---- ---- [ 40.516942][ C2] lock(acaddr_hash_lock); [ 40.517067][ C2] local_irq_disable(); [ 40.517219][ C2] lock(&ndev->lock); [ 40.517384][ C2] lock(acaddr_hash_lock); [ 40.517541][ C2] [ 40.517642][ C2] lock(&ndev->lock); [ 40.517737][ C2] [ 40.517737][ C2] *** DEADLOCK *** [ 40.517737][ C2] [ 40.517931][ C2] 6 locks held by mausezahn/646: [ 40.518069][ C2] #0: ffffffff8f377d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 40.518315][ C2] #1: ffffffff8f377d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 40.518546][ C2] #2: ffffffff8f377d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 40.518782][ C2] #3: ffffffff8f377cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 40.519007][ C2] #4: ffffffff8f377d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 40.519237][ C2] #5: ffffffff8f377d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 40.519471][ C2] [ 40.519471][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 40.519700][ C2] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 40.519842][ C2] HARDIRQ-ON-W at: [ 40.519940][ C2] __lock_acquire+0x378/0xc10 [ 40.520108][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.520282][ C2] _raw_spin_lock+0x33/0x40 [ 40.520452][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.520654][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.520806][ C2] addrconf_join_anycast+0x1bc/0x260 [ 40.520961][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 40.521123][ C2] addrconf_dad_completed+0x14b/0xe10 [ 40.521314][ C2] addrconf_dad_begin+0x2e1/0x540 [ 40.521470][ C2] addrconf_dad_work+0x170/0x930 [ 40.521643][ C2] process_one_work+0xdf8/0x1410 [ 40.521799][ C2] worker_thread+0x4f1/0xd60 [ 40.521953][ C2] kthread+0x367/0x460 [ 40.522115][ C2] ret_from_fork+0x474/0x6b0 [ 40.522282][ C2] ret_from_fork_asm+0x11/0x20 [ 40.522423][ C2] SOFTIRQ-ON-W at: [ 40.522497][ C2] __lock_acquire+0x378/0xc10 [ 40.522623][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.522745][ C2] _raw_spin_lock+0x33/0x40 [ 40.522866][ C2] __ipv6_dev_ac_dec+0x236/0x5d0 [ 40.522985][ C2] addrconf_leave_anycast+0x1bc/0x260 [ 40.523127][ C2] __ipv6_ifa_notify+0x6b4/0xad0 [ 40.523247][ C2] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 40.523390][ C2] addrconf_notify+0x339/0xf30 [ 40.523511][ C2] notifier_call_chain+0xb0/0x320 [ 40.523637][ C2] __netdev_upper_dev_link+0x3a5/0x590 [ 40.523781][ C2] netdev_master_upper_dev_link+0x86/0xb0 [ 40.523939][ C2] vrf_add_slave+0xdd/0x210 [vrf] [ 40.524103][ C2] do_set_master+0x357/0x580 [ 40.524276][ C2] do_setlink.isra.0+0xa31/0x2750 [ 40.524450][ C2] rtnl_newlink+0x8d1/0xef0 [ 40.524629][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.524803][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 40.524977][ C2] netlink_unicast+0x486/0x750 [ 40.525149][ C2] netlink_sendmsg+0x735/0xc60 [ 40.525307][ C2] ____sys_sendmsg+0x419/0x850 [ 40.525429][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 40.525551][ C2] __sys_sendmsg+0x145/0x1f0 [ 40.525676][ C2] do_syscall_64+0x117/0x590 [ 40.525798][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.525941][ C2] INITIAL USE at: [ 40.526016][ C2] __lock_acquire+0x378/0xc10 [ 40.526136][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.526254][ C2] _raw_spin_lock+0x33/0x40 [ 40.526375][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.526518][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.526641][ C2] addrconf_join_anycast+0x1bc/0x260 [ 40.526760][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 40.526879][ C2] addrconf_dad_completed+0x14b/0xe10 [ 40.526999][ C2] addrconf_dad_begin+0x2e1/0x540 [ 40.527122][ C2] addrconf_dad_work+0x170/0x930 [ 40.527240][ C2] process_one_work+0xdf8/0x1410 [ 40.527362][ C2] worker_thread+0x4f1/0xd60 [ 40.527482][ C2] kthread+0x367/0x460 [ 40.527602][ C2] ret_from_fork+0x474/0x6b0 [ 40.527727][ C2] ret_from_fork_asm+0x11/0x20 [ 40.527850][ C2] } [ 40.527901][ C2] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 40.528048][ C2] ... acquired at: [ 40.528121][ C2] __lock_acquire+0x508/0xc10 [ 40.528218][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.528315][ C2] _raw_spin_lock+0x33/0x40 [ 40.528411][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.528531][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.528632][ C2] addrconf_join_anycast+0x1bc/0x260 [ 40.528728][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 40.528823][ C2] addrconf_dad_completed+0x14b/0xe10 [ 40.528919][ C2] addrconf_dad_begin+0x2e1/0x540 [ 40.529015][ C2] addrconf_dad_work+0x170/0x930 [ 40.529112][ C2] process_one_work+0xdf8/0x1410 [ 40.529208][ C2] worker_thread+0x4f1/0xd60 [ 40.529305][ C2] kthread+0x367/0x460 [ 40.529378][ C2] ret_from_fork+0x474/0x6b0 [ 40.529472][ C2] ret_from_fork_asm+0x11/0x20 [ 40.529570][ C2] [ 40.529623][ C2] -> (&ndev->lock){++.-}-{3:3} { [ 40.529723][ C2] HARDIRQ-ON-W at: [ 40.529798][ C2] __lock_acquire+0x378/0xc10 [ 40.529922][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.530043][ C2] _raw_write_lock_bh+0x38/0x50 [ 40.530164][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 40.530286][ C2] addrconf_notify+0x151/0xf30 [ 40.530408][ C2] notifier_call_chain+0xb0/0x320 [ 40.530531][ C2] __dev_notify_flags+0xde/0x280 [ 40.530659][ C2] netif_change_flags+0xfe/0x190 [ 40.530779][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 40.530899][ C2] rtnl_newlink+0x8d1/0xef0 [ 40.531019][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.531142][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 40.531264][ C2] netlink_unicast+0x486/0x750 [ 40.531385][ C2] netlink_sendmsg+0x735/0xc60 [ 40.531505][ C2] ____sys_sendmsg+0x419/0x850 [ 40.531635][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 40.531792][ C2] __sys_sendmsg+0x145/0x1f0 [ 40.531947][ C2] do_syscall_64+0x117/0x590 [ 40.532071][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.532215][ C2] HARDIRQ-ON-R at: [ 40.532289][ C2] __lock_acquire+0x378/0xc10 [ 40.532409][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.532530][ C2] _raw_read_lock_bh+0x44/0x80 [ 40.532659][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 40.532803][ C2] inet6_fill_link_af+0x5c/0xe0 [ 40.532924][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 40.533067][ C2] rtnl_getlink+0x9c9/0xeb0 [ 40.533187][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.533307][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 40.533427][ C2] netlink_unicast+0x486/0x750 [ 40.533547][ C2] netlink_sendmsg+0x735/0xc60 [ 40.533669][ C2] ____sys_sendmsg+0x419/0x850 [ 40.533788][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 40.533908][ C2] __sys_sendmsg+0x145/0x1f0 [ 40.534028][ C2] do_syscall_64+0x117/0x590 [ 40.534146][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.534288][ C2] IN-SOFTIRQ-R at: [ 40.534361][ C2] __lock_acquire+0x378/0xc10 [ 40.534480][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.534600][ C2] _raw_read_lock_bh+0x44/0x80 [ 40.534728][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 40.534850][ C2] ndisc_send_ns+0xf3/0x120 [ 40.534972][ C2] ndisc_solicit+0x314/0x480 [ 40.535091][ C2] neigh_probe+0xb3/0x100 [ 40.535212][ C2] __neigh_event_send+0x802/0x1070 [ 40.535333][ C2] neigh_resolve_output+0xbe/0x140 [ 40.535452][ C2] ip6_finish_output2+0x423/0x1300 [ 40.535572][ C2] ip6_finish_output+0x646/0xda0 [ 40.535693][ C2] ip6_output+0x23f/0x7f0 [ 40.535813][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.535957][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.536078][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.536221][ C2] dev_hard_start_xmit+0xf8/0x690 [ 40.536341][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 40.536461][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 40.536582][ C2] ip_output+0x1ca/0x660 [ 40.536708][ C2] ip_rcv+0xdc/0x3d0 [ 40.536804][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 40.536946][ C2] process_backlog+0x2bc/0x1490 [ 40.537065][ C2] __napi_poll+0xa7/0x3b0 [ 40.537185][ C2] net_rx_action+0x513/0xf50 [ 40.537304][ C2] handle_softirqs+0x1d8/0x940 [ 40.537426][ C2] do_softirq+0xa9/0xe0 [ 40.537545][ C2] __local_bh_enable_ip+0x113/0x140 [ 40.537667][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 40.537786][ C2] packet_snd+0xfad/0x1990 [ 40.537908][ C2] __sys_sendto+0x2c9/0x400 [ 40.538028][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 40.538150][ C2] do_syscall_64+0x117/0x590 [ 40.538269][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.538413][ C2] INITIAL USE at: [ 40.538485][ C2] __lock_acquire+0x378/0xc10 [ 40.538607][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.538730][ C2] _raw_write_lock_bh+0x38/0x50 [ 40.538850][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 40.538971][ C2] addrconf_notify+0x151/0xf30 [ 40.539092][ C2] notifier_call_chain+0xb0/0x320 [ 40.539274][ C2] __dev_notify_flags+0xde/0x280 [ 40.539394][ C2] netif_change_flags+0xfe/0x190 [ 40.539513][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 40.539698][ C2] rtnl_newlink+0x8d1/0xef0 [ 40.539818][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.539936][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 40.540114][ C2] netlink_unicast+0x486/0x750 [ 40.540234][ C2] netlink_sendmsg+0x735/0xc60 [ 40.540354][ C2] ____sys_sendmsg+0x419/0x850 [ 40.540475][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 40.540660][ C2] __sys_sendmsg+0x145/0x1f0 [ 40.540780][ C2] do_syscall_64+0x117/0x590 [ 40.540900][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.541102][ C2] INITIAL READ USE at: [ 40.541177][ C2] __lock_acquire+0x378/0xc10 [ 40.541299][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.541477][ C2] _raw_read_lock_bh+0x44/0x80 [ 40.541598][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 40.541750][ C2] inet6_fill_link_af+0x5c/0xe0 [ 40.541929][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 40.542074][ C2] rtnl_getlink+0x9c9/0xeb0 [ 40.542195][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.542375][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 40.542495][ C2] netlink_unicast+0x486/0x750 [ 40.542623][ C2] netlink_sendmsg+0x735/0xc60 [ 40.542803][ C2] ____sys_sendmsg+0x419/0x850 [ 40.542924][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 40.543045][ C2] __sys_sendmsg+0x145/0x1f0 [ 40.543165][ C2] do_syscall_64+0x117/0x590 [ 40.543348][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.543490][ C2] } [ 40.543540][ C2] ... key at: [] __key.37+0x0/0x40 [ 40.543749][ C2] ... acquired at: [ 40.543822][ C2] mark_lock+0x1d7/0xa00 [ 40.543916][ C2] mark_usage+0x42/0x170 [ 40.544011][ C2] __lock_acquire+0x378/0xc10 [ 40.544166][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.544262][ C2] _raw_read_lock_bh+0x44/0x80 [ 40.544359][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 40.544456][ C2] ndisc_send_ns+0xf3/0x120 [ 40.544615][ C2] ndisc_solicit+0x314/0x480 [ 40.544711][ C2] neigh_probe+0xb3/0x100 [ 40.544808][ C2] __neigh_event_send+0x802/0x1070 [ 40.544904][ C2] neigh_resolve_output+0xbe/0x140 [ 40.545058][ C2] ip6_finish_output2+0x423/0x1300 [ 40.545155][ C2] ip6_finish_output+0x646/0xda0 [ 40.545250][ C2] ip6_output+0x23f/0x7f0 [ 40.545347][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.545527][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.545630][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.545750][ C2] dev_hard_start_xmit+0xf8/0x690 [ 40.545847][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 40.546000][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 40.546097][ C2] ip_output+0x1ca/0x660 [ 40.546192][ C2] ip_rcv+0xdc/0x3d0 [ 40.546265][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 40.546385][ C2] process_backlog+0x2bc/0x1490 [ 40.546482][ C2] __napi_poll+0xa7/0x3b0 [ 40.546578][ C2] net_rx_action+0x513/0xf50 [ 40.546679][ C2] handle_softirqs+0x1d8/0x940 [ 40.546835][ C2] do_softirq+0xa9/0xe0 [ 40.546907][ C2] __local_bh_enable_ip+0x113/0x140 [ 40.547003][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 40.547101][ C2] packet_snd+0xfad/0x1990 [ 40.547257][ C2] __sys_sendto+0x2c9/0x400 [ 40.547356][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 40.547451][ C2] do_syscall_64+0x117/0x590 [ 40.547547][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.547730][ C2] [ 40.547778][ C2] [ 40.547778][ C2] stack backtrace: [ 40.547900][ C2] CPU: 2 UID: 0 PID: 646 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 40.547903][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 40.547906][ C2] Call Trace: [ 40.547907][ C2] [ 40.547908][ C2] dump_stack_lvl+0x6f/0xa0 [ 40.547914][ C2] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 40.547917][ C2] mark_lock_irq+0x989/0x9c0 [ 40.547920][ C2] mark_lock+0x1d7/0xa00 [ 40.547922][ C2] mark_usage+0x42/0x170 [ 40.547923][ C2] __lock_acquire+0x378/0xc10 [ 40.547924][ C2] ? __lock_acquire+0x508/0xc10 [ 40.547926][ C2] lock_acquire.part.0+0xbc/0x260 [ 40.547928][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 40.547930][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.547933][ C2] ? lock_acquire+0x134/0x160 [ 40.547935][ C2] _raw_read_lock_bh+0x44/0x80 [ 40.547936][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 40.547938][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 40.547940][ C2] ndisc_send_ns+0xf3/0x120 [ 40.547941][ C2] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 40.547943][ C2] ? ndisc_parse_options+0x30/0x30 [ 40.547945][ C2] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 40.547947][ C2] ndisc_solicit+0x314/0x480 [ 40.547949][ C2] ? ndisc_send_ns+0x120/0x120 [ 40.547950][ C2] ? neigh_probe+0x62/0x100 [ 40.547952][ C2] neigh_probe+0xb3/0x100 [ 40.547954][ C2] __neigh_event_send+0x802/0x1070 [ 40.547956][ C2] ? warn_bogus_irq_restore+0x1/0x20 [ 40.547958][ C2] ? ___neigh_create+0x811/0x1070 [ 40.547961][ C2] neigh_resolve_output+0xbe/0x140 [ 40.547963][ C2] ip6_finish_output2+0x423/0x1300 [ 40.547965][ C2] ? ip6_xmit+0x2000/0x2000 [ 40.547966][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 40.547967][ C2] ? find_held_lock+0x2b/0x80 [ 40.547970][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 40.547972][ C2] ? ip6_mtu+0x15d/0x310 [ 40.547974][ C2] ip6_finish_output+0x646/0xda0 [ 40.547976][ C2] ip6_output+0x23f/0x7f0 [ 40.547978][ C2] ? ip6_finish_output+0xda0/0xda0 [ 40.547980][ C2] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 40.547983][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.547986][ C2] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 40.547988][ C2] ? pskb_expand_head+0x4ac/0xf50 [ 40.547991][ C2] ? __lock_acquire+0x508/0xc10 [ 40.547992][ C2] ? __pskb_copy_fclone+0x1080/0x1080 [ 40.547995][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.547997][ C2] ? __ipv6_chk_addr_and_flags+0x230/0x5f0 [ 40.547999][ C2] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 40.548001][ C2] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 40.548003][ C2] ? __asan_memcpy+0x3c/0x60 [ 40.548007][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.548009][ C2] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 40.548010][ C2] ? sock_def_readable+0x156/0x490 [ 40.548012][ C2] ? find_held_lock+0x2b/0x80 [ 40.548015][ C2] ? dev_queue_xmit_nit+0x642/0x9e0 [ 40.548018][ C2] dev_hard_start_xmit+0xf8/0x690 [ 40.548020][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 40.548022][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.548024][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 40.548026][ C2] ? __lock_acquire+0x508/0xc10 [ 40.548028][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 40.548030][ C2] ? find_held_lock+0x2b/0x80 [ 40.548032][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 40.548034][ C2] ? ___neigh_create+0x811/0x1070 [ 40.548036][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 40.548038][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 40.548040][ C2] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 40.548042][ C2] ? ip4_dst_hoplimit+0x320/0x320 [ 40.548044][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.548047][ C2] ip_output+0x1ca/0x660 [ 40.548048][ C2] ? ip_finish_output+0x460/0x460 [ 40.548049][ C2] ? ip4_frag_init+0x720/0x720 [ 40.548051][ C2] ? ip_forward+0xfa7/0x1570 [ 40.548054][ C2] ? process_backlog+0x561/0x1490 [ 40.548055][ C2] ip_rcv+0xdc/0x3d0 [ 40.548057][ C2] ? ip_local_deliver+0x4c0/0x4c0 [ 40.548059][ C2] ? mark_usage+0x61/0x170 [ 40.548060][ C2] ? __lock_acquire+0x508/0xc10 [ 40.548061][ C2] ? kvmclock_setup_percpu+0xf7/0x360 [ 40.548065][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 40.548066][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 40.548067][ C2] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 40.548070][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.548072][ C2] process_backlog+0x2bc/0x1490 [ 40.548074][ C2] __napi_poll+0xa7/0x3b0 [ 40.548075][ C2] net_rx_action+0x513/0xf50 [ 40.548077][ C2] ? __napi_poll+0x3b0/0x3b0 [ 40.548080][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.548082][ C2] ? rcu_is_watching+0x15/0xd0 [ 40.548084][ C2] handle_softirqs+0x1d8/0x940 [ 40.548086][ C2] ? _local_bh_enable+0xd0/0xd0 [ 40.548087][ C2] ? _local_bh_enable+0xd0/0xd0 [ 40.548089][ C2] do_softirq+0xa9/0xe0 [ 40.548090][ C2] [ 40.548091][ C2] [ 40.548092][ C2] ? __dev_queue_xmit+0x946/0x1b60 [ 40.548093][ C2] __local_bh_enable_ip+0x113/0x140 [ 40.548095][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 40.548097][ C2] ? _copy_from_iter+0x1bb/0x1810 [ 40.548101][ C2] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 40.548103][ C2] ? net_dim+0x730/0xd70 [ 40.548105][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 40.548108][ C2] ? packet_release+0xc70/0xc70 [ 40.548110][ C2] packet_snd+0xfad/0x1990 [ 40.548113][ C2] ? tpacket_snd+0x19e0/0x19e0 [ 40.548115][ C2] ? __might_fault+0x97/0x140 [ 40.548118][ C2] ? __might_fault+0x97/0x140 [ 40.548119][ C2] ? __might_fault+0x97/0x140 [ 40.548121][ C2] __sys_sendto+0x2c9/0x400 [ 40.548123][ C2] ? __ia32_sys_getpeername+0xd0/0xd0 [ 40.548126][ C2] ? sock_ioctl+0x3cb/0x5f0 [ 40.548129][ C2] ? do_user_addr_fault+0x325/0xe30 [ 40.548132][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 40.548134][ C2] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 40.548137][ C2] ? lockdep_hardirqs_on+0x8c/0x130 [ 40.548139][ C2] ? do_syscall_64+0x82/0x590 [ 40.548140][ C2] do_syscall_64+0x117/0x590 [ 40.548141][ C2] ? trace_hardirqs_off+0xd/0x30 [ 40.548142][ C2] ? exc_page_fault+0xee/0x100 [ 40.548144][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.548146][ C2] RIP: 0033:0x7fe075c8908e [ 40.548150][ C2] 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 [ 40.548151][ C2] RSP: 002b:00007ffe011c3860 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 40.548154][ C2] RAX: ffffffffffffffda RBX: 000055f6eed03b22 RCX: 00007fe075c8908e [ 40.548156][ C2] RDX: 0000000000000062 RSI: 000055f6eed03b22 RDI: 0000000000000005 [ 40.548156][ C2] RBP: 00007ffe011c3870 R08: 00007ffe011c38c0 R09: 0000000000000014 [ 40.548157][ C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000055f6eed03830 [ 40.548158][ C2] R13: 0000000000000062 R14: 0000000000000005 R15: 000055f6eed03830 [ 40.548161][ C2]