[ 8.605682][ T192] ip (192) used greatest stack depth: 23856 bytes left [ 10.154821][ T266] 8021q: 802.1Q VLAN Support v1.8 [ 10.262191][ T271] gre: GRE over IPv4 demultiplexer driver [ 10.298020][ T271] ip6_gre: GRE over IPv6 tunneling driver [ 16.668538][ T358] GACT probability NOT on [ 16.787960][ C3] [ 16.788037][ C3] ======================================================== [ 16.788188][ C3] WARNING: possible irq lock inversion dependency detected [ 16.788331][ C3] 7.1.0-rc5-virtme #1 Not tainted [ 16.788431][ C3] -------------------------------------------------------- [ 16.788577][ C3] mausezahn/363 just changed the state of lock: [ 16.788708][ C3] ff1100000da5a578 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 16.788888][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 16.789032][ C3] (acaddr_hash_lock){+.+.}-{3:3} [ 16.789034][ C3] [ 16.789034][ C3] [ 16.789034][ C3] and interrupts could create inverse lock ordering between them. [ 16.789034][ C3] [ 16.789382][ C3] [ 16.789382][ C3] other info that might help us debug this: [ 16.789526][ C3] Possible interrupt unsafe locking scenario: [ 16.789526][ C3] [ 16.789671][ C3] CPU0 CPU1 [ 16.789775][ C3] ---- ---- [ 16.789871][ C3] lock(acaddr_hash_lock); [ 16.789968][ C3] local_irq_disable(); [ 16.790087][ C3] lock(&ndev->lock); [ 16.790210][ C3] lock(acaddr_hash_lock); [ 16.790332][ C3] [ 16.790405][ C3] lock(&ndev->lock); [ 16.790479][ C3] [ 16.790479][ C3] *** DEADLOCK *** [ 16.790479][ C3] [ 16.790624][ C3] 6 locks held by mausezahn/363: [ 16.790727][ C3] #0: ffffffffa1777d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 16.790898][ C3] #1: ffffffffa1777d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 16.791067][ C3] #2: ffffffffa1777d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 16.791235][ C3] #3: ffffffffa1777cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 16.791408][ C3] #4: ffffffffa1777d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 16.791577][ C3] #5: ffffffffa1777d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 16.791751][ C3] [ 16.791751][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 16.791918][ C3] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 16.792019][ C3] HARDIRQ-ON-W at: [ 16.792094][ C3] __lock_acquire+0x378/0xc10 [ 16.792219][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.792338][ C3] _raw_spin_lock+0x33/0x40 [ 16.792461][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.792609][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.792738][ C3] addrconf_join_anycast+0x1bc/0x260 [ 16.792859][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 16.792979][ C3] addrconf_dad_completed+0x14b/0xe10 [ 16.793123][ C3] addrconf_dad_begin+0x2e1/0x540 [ 16.793245][ C3] addrconf_dad_work+0x170/0x930 [ 16.793364][ C3] process_one_work+0xdf8/0x1410 [ 16.793487][ C3] worker_thread+0x4f1/0xd60 [ 16.793609][ C3] kthread+0x367/0x460 [ 16.793735][ C3] ret_from_fork+0x474/0x6b0 [ 16.793858][ C3] ret_from_fork_asm+0x11/0x20 [ 16.793982][ C3] SOFTIRQ-ON-W at: [ 16.794054][ C3] __lock_acquire+0x378/0xc10 [ 16.794175][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.794295][ C3] _raw_spin_lock+0x33/0x40 [ 16.794415][ C3] __ipv6_dev_ac_dec+0x236/0x5d0 [ 16.794542][ C3] addrconf_leave_anycast+0x1bc/0x260 [ 16.794690][ C3] __ipv6_ifa_notify+0x6b4/0xad0 [ 16.794812][ C3] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 16.794956][ C3] addrconf_notify+0x339/0xf30 [ 16.795077][ C3] notifier_call_chain+0xb0/0x320 [ 16.795199][ C3] __netdev_upper_dev_link+0x3a5/0x590 [ 16.795343][ C3] netdev_master_upper_dev_link+0x86/0xb0 [ 16.795488][ C3] vrf_add_slave+0xdd/0x210 [vrf] [ 16.795610][ C3] do_set_master+0x357/0x580 [ 16.795735][ C3] do_setlink.isra.0+0xa31/0x2750 [ 16.795857][ C3] rtnl_newlink+0x8d1/0xef0 [ 16.795979][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.796100][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 16.796222][ C3] netlink_unicast+0x486/0x750 [ 16.796342][ C3] netlink_sendmsg+0x735/0xc60 [ 16.796464][ C3] ____sys_sendmsg+0x419/0x850 [ 16.796587][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 16.796716][ C3] __sys_sendmsg+0x145/0x1f0 [ 16.796836][ C3] do_syscall_64+0x117/0x590 [ 16.796958][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.797103][ C3] INITIAL USE at: [ 16.797176][ C3] __lock_acquire+0x378/0xc10 [ 16.797298][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.797419][ C3] _raw_spin_lock+0x33/0x40 [ 16.797540][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.797688][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.797810][ C3] addrconf_join_anycast+0x1bc/0x260 [ 16.797932][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 16.798052][ C3] addrconf_dad_completed+0x14b/0xe10 [ 16.798173][ C3] addrconf_dad_begin+0x2e1/0x540 [ 16.798293][ C3] addrconf_dad_work+0x170/0x930 [ 16.798414][ C3] process_one_work+0xdf8/0x1410 [ 16.798537][ C3] worker_thread+0x4f1/0xd60 [ 16.798658][ C3] kthread+0x367/0x460 [ 16.798787][ C3] ret_from_fork+0x474/0x6b0 [ 16.798909][ C3] ret_from_fork_asm+0x11/0x20 [ 16.799028][ C3] } [ 16.799079][ C3] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 16.799232][ C3] ... acquired at: [ 16.799306][ C3] __lock_acquire+0x508/0xc10 [ 16.799410][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.799507][ C3] _raw_spin_lock+0x33/0x40 [ 16.799604][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.799728][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.799825][ C3] addrconf_join_anycast+0x1bc/0x260 [ 16.799923][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 16.800019][ C3] addrconf_dad_completed+0x14b/0xe10 [ 16.800116][ C3] addrconf_dad_begin+0x2e1/0x540 [ 16.800212][ C3] addrconf_dad_work+0x170/0x930 [ 16.800309][ C3] process_one_work+0xdf8/0x1410 [ 16.800406][ C3] worker_thread+0x4f1/0xd60 [ 16.800508][ C3] kthread+0x367/0x460 [ 16.800582][ C3] ret_from_fork+0x474/0x6b0 [ 16.800682][ C3] ret_from_fork_asm+0x11/0x20 [ 16.800778][ C3] [ 16.800831][ C3] -> (&ndev->lock){++.-}-{3:3} { [ 16.800930][ C3] HARDIRQ-ON-W at: [ 16.801002][ C3] __lock_acquire+0x378/0xc10 [ 16.801128][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.801250][ C3] _raw_write_lock_bh+0x38/0x50 [ 16.801370][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 16.801492][ C3] addrconf_notify+0x151/0xf30 [ 16.801613][ C3] notifier_call_chain+0xb0/0x320 [ 16.801738][ C3] __dev_notify_flags+0xde/0x280 [ 16.801861][ C3] netif_change_flags+0xfe/0x190 [ 16.801981][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 16.802100][ C3] rtnl_newlink+0x8d1/0xef0 [ 16.802221][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.802342][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 16.802463][ C3] netlink_unicast+0x486/0x750 [ 16.802586][ C3] netlink_sendmsg+0x735/0xc60 [ 16.802714][ C3] ____sys_sendmsg+0x419/0x850 [ 16.802836][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 16.802957][ C3] __sys_sendmsg+0x145/0x1f0 [ 16.803081][ C3] do_syscall_64+0x117/0x590 [ 16.803202][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.803348][ C3] HARDIRQ-ON-R at: [ 16.803425][ C3] __lock_acquire+0x378/0xc10 [ 16.803547][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.803667][ C3] _raw_read_lock_bh+0x44/0x80 [ 16.803794][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 16.803937][ C3] inet6_fill_link_af+0x5c/0xe0 [ 16.804063][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 16.804207][ C3] rtnl_getlink+0x9c9/0xeb0 [ 16.804328][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.804449][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 16.804570][ C3] netlink_unicast+0x486/0x750 [ 16.804694][ C3] netlink_sendmsg+0x735/0xc60 [ 16.804814][ C3] ____sys_sendmsg+0x419/0x850 [ 16.804940][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 16.805061][ C3] __sys_sendmsg+0x145/0x1f0 [ 16.805182][ C3] do_syscall_64+0x117/0x590 [ 16.805302][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.805448][ C3] IN-SOFTIRQ-R at: [ 16.805522][ C3] __lock_acquire+0x378/0xc10 [ 16.805643][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.805767][ C3] _raw_read_lock_bh+0x44/0x80 [ 16.805889][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 16.806010][ C3] ndisc_send_ns+0xf3/0x120 [ 16.806132][ C3] ndisc_solicit+0x314/0x480 [ 16.806256][ C3] neigh_probe+0xb3/0x100 [ 16.806377][ C3] __neigh_event_send+0x802/0x1070 [ 16.806499][ C3] neigh_resolve_output+0xbe/0x140 [ 16.806619][ C3] ip6_finish_output2+0x423/0x1300 [ 16.806744][ C3] ip6_finish_output+0x646/0xda0 [ 16.806867][ C3] ip6_output+0x23f/0x7f0 [ 16.806989][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.807136][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.807259][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.807405][ C3] dev_hard_start_xmit+0xf8/0x690 [ 16.807528][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 16.807647][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 16.807772][ C3] ip_output+0x1ca/0x660 [ 16.807890][ C3] ip_rcv+0xdc/0x3d0 [ 16.807988][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 16.808132][ C3] process_backlog+0x2bc/0x1490 [ 16.808254][ C3] __napi_poll+0xa7/0x3b0 [ 16.808381][ C3] net_rx_action+0x513/0xf50 [ 16.808501][ C3] handle_softirqs+0x1d8/0x940 [ 16.808624][ C3] do_softirq+0xa9/0xe0 [ 16.808747][ C3] __local_bh_enable_ip+0x113/0x140 [ 16.808867][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 16.808987][ C3] packet_snd+0xfad/0x1990 [ 16.809108][ C3] __sys_sendto+0x2c9/0x400 [ 16.809228][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 16.809349][ C3] do_syscall_64+0x117/0x590 [ 16.809472][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.809618][ C3] INITIAL USE at: [ 16.809694][ C3] __lock_acquire+0x378/0xc10 [ 16.809816][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.809936][ C3] _raw_write_lock_bh+0x38/0x50 [ 16.810056][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 16.810180][ C3] addrconf_notify+0x151/0xf30 [ 16.810303][ C3] notifier_call_chain+0xb0/0x320 [ 16.810423][ C3] __dev_notify_flags+0xde/0x280 [ 16.810545][ C3] netif_change_flags+0xfe/0x190 [ 16.810666][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 16.810792][ C3] rtnl_newlink+0x8d1/0xef0 [ 16.810913][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.811033][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 16.811154][ C3] netlink_unicast+0x486/0x750 [ 16.811276][ C3] netlink_sendmsg+0x735/0xc60 [ 16.811399][ C3] ____sys_sendmsg+0x419/0x850 [ 16.811521][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 16.811643][ C3] __sys_sendmsg+0x145/0x1f0 [ 16.811769][ C3] do_syscall_64+0x117/0x590 [ 16.811889][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.812032][ C3] INITIAL READ USE at: [ 16.812105][ C3] __lock_acquire+0x378/0xc10 [ 16.812225][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.812352][ C3] _raw_read_lock_bh+0x44/0x80 [ 16.812474][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 16.812620][ C3] inet6_fill_link_af+0x5c/0xe0 [ 16.812745][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 16.812890][ C3] rtnl_getlink+0x9c9/0xeb0 [ 16.813011][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.813131][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 16.813252][ C3] netlink_unicast+0x486/0x750 [ 16.813372][ C3] netlink_sendmsg+0x735/0xc60 [ 16.813495][ C3] ____sys_sendmsg+0x419/0x850 [ 16.813617][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 16.813742][ C3] __sys_sendmsg+0x145/0x1f0 [ 16.813863][ C3] do_syscall_64+0x117/0x590 [ 16.813983][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.814127][ C3] } [ 16.814180][ C3] ... key at: [] __key.37+0x0/0x40 [ 16.814326][ C3] ... acquired at: [ 16.814397][ C3] mark_lock+0x1d7/0xa00 [ 16.814495][ C3] mark_usage+0x42/0x170 [ 16.814591][ C3] __lock_acquire+0x378/0xc10 [ 16.814693][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.814789][ C3] _raw_read_lock_bh+0x44/0x80 [ 16.814885][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 16.814982][ C3] ndisc_send_ns+0xf3/0x120 [ 16.815082][ C3] ndisc_solicit+0x314/0x480 [ 16.815182][ C3] neigh_probe+0xb3/0x100 [ 16.815278][ C3] __neigh_event_send+0x802/0x1070 [ 16.815380][ C3] neigh_resolve_output+0xbe/0x140 [ 16.815476][ C3] ip6_finish_output2+0x423/0x1300 [ 16.815573][ C3] ip6_finish_output+0x646/0xda0 [ 16.815670][ C3] ip6_output+0x23f/0x7f0 [ 16.815772][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.815893][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.815989][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.816109][ C3] dev_hard_start_xmit+0xf8/0x690 [ 16.816205][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 16.816301][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 16.816400][ C3] ip_output+0x1ca/0x660 [ 16.816497][ C3] ip_rcv+0xdc/0x3d0 [ 16.816570][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 16.816694][ C3] process_backlog+0x2bc/0x1490 [ 16.816789][ C3] __napi_poll+0xa7/0x3b0 [ 16.816885][ C3] net_rx_action+0x513/0xf50 [ 16.816982][ C3] handle_softirqs+0x1d8/0x940 [ 16.817079][ C3] do_softirq+0xa9/0xe0 [ 16.817152][ C3] __local_bh_enable_ip+0x113/0x140 [ 16.817248][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 16.817349][ C3] packet_snd+0xfad/0x1990 [ 16.817449][ C3] __sys_sendto+0x2c9/0x400 [ 16.817546][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 16.817642][ C3] do_syscall_64+0x117/0x590 [ 16.817742][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.817868][ C3] [ 16.817915][ C3] [ 16.817915][ C3] stack backtrace: [ 16.818036][ C3] CPU: 3 UID: 0 PID: 363 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 16.818039][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.818041][ C3] Call Trace: [ 16.818043][ C3] [ 16.818044][ C3] dump_stack_lvl+0x6f/0xa0 [ 16.818049][ C3] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 16.818052][ C3] mark_lock_irq+0x989/0x9c0 [ 16.818055][ C3] mark_lock+0x1d7/0xa00 [ 16.818057][ C3] mark_usage+0x42/0x170 [ 16.818058][ C3] __lock_acquire+0x378/0xc10 [ 16.818059][ C3] ? __lock_acquire+0x508/0xc10 [ 16.818061][ C3] lock_acquire.part.0+0xbc/0x260 [ 16.818063][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 16.818065][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818068][ C3] ? lock_acquire+0x134/0x160 [ 16.818070][ C3] _raw_read_lock_bh+0x44/0x80 [ 16.818071][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 16.818073][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 16.818075][ C3] ndisc_send_ns+0xf3/0x120 [ 16.818076][ C3] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 16.818079][ C3] ? ndisc_parse_options+0x30/0x30 [ 16.818080][ C3] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 16.818082][ C3] ndisc_solicit+0x314/0x480 [ 16.818084][ C3] ? ndisc_send_ns+0x120/0x120 [ 16.818086][ C3] ? neigh_probe+0x62/0x100 [ 16.818088][ C3] neigh_probe+0xb3/0x100 [ 16.818089][ C3] __neigh_event_send+0x802/0x1070 [ 16.818091][ C3] ? warn_bogus_irq_restore+0x1/0x20 [ 16.818093][ C3] ? ___neigh_create+0x811/0x1070 [ 16.818096][ C3] neigh_resolve_output+0xbe/0x140 [ 16.818098][ C3] ip6_finish_output2+0x423/0x1300 [ 16.818100][ C3] ? ip6_xmit+0x2000/0x2000 [ 16.818101][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 16.818103][ C3] ? find_held_lock+0x2b/0x80 [ 16.818105][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 16.818107][ C3] ? ip6_mtu+0x15d/0x310 [ 16.818109][ C3] ip6_finish_output+0x646/0xda0 [ 16.818111][ C3] ip6_output+0x23f/0x7f0 [ 16.818113][ C3] ? ip6_finish_output+0xda0/0xda0 [ 16.818115][ C3] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 16.818118][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.818121][ C3] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 16.818123][ C3] ? pskb_expand_head+0x4ac/0xf50 [ 16.818125][ C3] ? __lock_acquire+0x508/0xc10 [ 16.818127][ C3] ? __pskb_copy_fclone+0x1080/0x1080 [ 16.818130][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.818132][ C3] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 16.818134][ C3] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 16.818136][ C3] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 16.818138][ C3] ? __asan_memcpy+0x3c/0x60 [ 16.818142][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.818144][ C3] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 16.818145][ C3] ? sock_def_readable+0x156/0x490 [ 16.818147][ C3] ? find_held_lock+0x2b/0x80 [ 16.818150][ C3] ? dev_queue_xmit_nit+0x642/0x9e0 [ 16.818153][ C3] dev_hard_start_xmit+0xf8/0x690 [ 16.818155][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 16.818157][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818159][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 16.818161][ C3] ? __lock_acquire+0x508/0xc10 [ 16.818163][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 16.818165][ C3] ? find_held_lock+0x2b/0x80 [ 16.818167][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 16.818169][ C3] ? ___neigh_create+0x811/0x1070 [ 16.818171][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 16.818173][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 16.818175][ C3] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 16.818177][ C3] ? ip4_dst_hoplimit+0x320/0x320 [ 16.818179][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818181][ C3] ip_output+0x1ca/0x660 [ 16.818183][ C3] ? ip_finish_output+0x460/0x460 [ 16.818184][ C3] ? ip4_frag_init+0x720/0x720 [ 16.818186][ C3] ? ip_forward+0xfa7/0x1570 [ 16.818188][ C3] ? process_backlog+0x561/0x1490 [ 16.818189][ C3] ip_rcv+0xdc/0x3d0 [ 16.818191][ C3] ? ip_local_deliver+0x4c0/0x4c0 [ 16.818194][ C3] ? mark_usage+0x61/0x170 [ 16.818195][ C3] ? __lock_acquire+0x508/0xc10 [ 16.818196][ C3] ? init_data_structures_once.part.0+0x1a7/0x450 [ 16.818198][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 16.818199][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 16.818200][ C3] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 16.818202][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818205][ C3] process_backlog+0x2bc/0x1490 [ 16.818207][ C3] __napi_poll+0xa7/0x3b0 [ 16.818208][ C3] net_rx_action+0x513/0xf50 [ 16.818210][ C3] ? __napi_poll+0x3b0/0x3b0 [ 16.818212][ C3] ? find_held_lock+0x2b/0x80 [ 16.818215][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818217][ C3] handle_softirqs+0x1d8/0x940 [ 16.818218][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818220][ C3] ? _local_bh_enable+0xd0/0xd0 [ 16.818222][ C3] ? trace_csd_function_exit+0xb3/0x1a0 [ 16.818224][ C3] ? rcu_is_watching+0x15/0xd0 [ 16.818226][ C3] do_softirq+0xa9/0xe0 [ 16.818227][ C3] [ 16.818228][ C3] [ 16.818228][ C3] ? __dev_queue_xmit+0x946/0x1b60 [ 16.818230][ C3] __local_bh_enable_ip+0x113/0x140 [ 16.818232][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 16.818234][ C3] ? _copy_from_iter+0x1bb/0x1810 [ 16.818238][ C3] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 16.818240][ C3] ? net_dim+0x730/0xd70 [ 16.818242][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 16.818245][ C3] ? packet_release+0xc70/0xc70 [ 16.818247][ C3] packet_snd+0xfad/0x1990 [ 16.818250][ C3] ? tpacket_snd+0x19e0/0x19e0 [ 16.818252][ C3] ? __might_fault+0x97/0x140 [ 16.818256][ C3] ? __might_fault+0x97/0x140 [ 16.818257][ C3] ? __might_fault+0x97/0x140 [ 16.818258][ C3] __sys_sendto+0x2c9/0x400 [ 16.818260][ C3] ? __ia32_sys_getpeername+0xd0/0xd0 [ 16.818263][ C3] ? sock_ioctl+0x3cb/0x5f0 [ 16.818266][ C3] ? do_user_addr_fault+0x325/0xe30 [ 16.818270][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 16.818272][ C3] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 16.818275][ C3] ? lockdep_hardirqs_on+0x8c/0x130 [ 16.818276][ C3] ? do_syscall_64+0x82/0x590 [ 16.818278][ C3] do_syscall_64+0x117/0x590 [ 16.818279][ C3] ? trace_hardirqs_off+0xd/0x30 [ 16.818280][ C3] ? exc_page_fault+0xee/0x100 [ 16.818282][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.818283][ C3] RIP: 0033:0x7f750963608e [ 16.818286][ C3] 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 [ 16.818288][ C3] RSP: 002b:00007ffe640aa3b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 16.818291][ C3] RAX: ffffffffffffffda RBX: 0000556dee099b22 RCX: 00007f750963608e [ 16.818292][ C3] RDX: 0000000000000062 RSI: 0000556dee099b22 RDI: 0000000000000005 [ 16.818293][ C3] RBP: 00007ffe640aa3c0 R08: 00007ffe640aa410 R09: 0000000000000014 [ 16.818294][ C3] R10: 0000000000000000 R11: 0000000000000202 R12: 0000556dee099830 [ 16.818295][ C3] R13: 0000000000000062 R14: 0000000000000005 R15: 0000556dee099830 [ 16.818297][ C3]