[ 10.595496][ T263] 8021q: 802.1Q VLAN Support v1.8 [ 10.714457][ T268] gre: GRE over IPv4 demultiplexer driver [ 10.756522][ T268] ip6_gre: GRE over IPv6 tunneling driver [ 11.389019][ T297] ip (297) used greatest stack depth: 24272 bytes left [ 17.256837][ T352] GACT probability NOT on [ 17.357074][ C3] [ 17.357172][ C3] ======================================================== [ 17.357330][ C3] WARNING: possible irq lock inversion dependency detected [ 17.357476][ C3] 7.1.0-rc5-virtme #1 Not tainted [ 17.357578][ C3] -------------------------------------------------------- [ 17.357721][ C3] mausezahn/357 just changed the state of lock: [ 17.357843][ C3] ff1100000cca3d78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 17.358021][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 17.358164][ C3] (acaddr_hash_lock){+.+.}-{3:3} [ 17.358167][ C3] [ 17.358167][ C3] [ 17.358167][ C3] and interrupts could create inverse lock ordering between them. [ 17.358167][ C3] [ 17.358520][ C3] [ 17.358520][ C3] other info that might help us debug this: [ 17.358665][ C3] Possible interrupt unsafe locking scenario: [ 17.358665][ C3] [ 17.358810][ C3] CPU0 CPU1 [ 17.358906][ C3] ---- ---- [ 17.359002][ C3] lock(acaddr_hash_lock); [ 17.359103][ C3] local_irq_disable(); [ 17.359221][ C3] lock(&ndev->lock); [ 17.359347][ C3] lock(acaddr_hash_lock); [ 17.359467][ C3] [ 17.359543][ C3] lock(&ndev->lock); [ 17.359616][ C3] [ 17.359616][ C3] *** DEADLOCK *** [ 17.359616][ C3] [ 17.359757][ C3] 6 locks held by mausezahn/357: [ 17.359852][ C3] #0: ffffffffa5d77d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 17.360024][ C3] #1: ffffffffa5d77d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 17.360191][ C3] #2: ffffffffa5d77d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 17.360364][ C3] #3: ffffffffa5d77cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 17.360534][ C3] #4: ffffffffa5d77d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 17.360702][ C3] #5: ffffffffa5d77d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 17.360871][ C3] [ 17.360871][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 17.361040][ C3] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 17.361142][ C3] HARDIRQ-ON-W at: [ 17.361218][ C3] __lock_acquire+0x378/0xc10 [ 17.361349][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.361469][ C3] _raw_spin_lock+0x33/0x40 [ 17.361590][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.361735][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.361854][ C3] addrconf_join_anycast+0x1bc/0x260 [ 17.361981][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 17.362105][ C3] addrconf_dad_completed+0x14b/0xe10 [ 17.362248][ C3] addrconf_dad_begin+0x2e1/0x540 [ 17.362371][ C3] addrconf_dad_work+0x170/0x930 [ 17.362492][ C3] process_one_work+0xdf8/0x1410 [ 17.362612][ C3] worker_thread+0x4f1/0xd60 [ 17.362736][ C3] kthread+0x367/0x460 [ 17.362858][ C3] ret_from_fork+0x474/0x6b0 [ 17.362979][ C3] ret_from_fork_asm+0x11/0x20 [ 17.363101][ C3] SOFTIRQ-ON-W at: [ 17.363174][ C3] __lock_acquire+0x378/0xc10 [ 17.363295][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.363419][ C3] _raw_spin_lock+0x33/0x40 [ 17.363539][ C3] __ipv6_dev_ac_dec+0x236/0x5d0 [ 17.363660][ C3] addrconf_leave_anycast+0x1bc/0x260 [ 17.363806][ C3] __ipv6_ifa_notify+0x6b4/0xad0 [ 17.363927][ C3] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 17.364074][ C3] addrconf_notify+0x339/0xf30 [ 17.364195][ C3] notifier_call_chain+0xb0/0x320 [ 17.364319][ C3] __netdev_upper_dev_link+0x3a5/0x590 [ 17.364465][ C3] netdev_master_upper_dev_link+0x86/0xb0 [ 17.364609][ C3] vrf_add_slave+0xdd/0x210 [vrf] [ 17.364736][ C3] do_set_master+0x357/0x580 [ 17.364855][ C3] do_setlink.isra.0+0xa31/0x2750 [ 17.364975][ C3] rtnl_newlink+0x8d1/0xef0 [ 17.365094][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.365214][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 17.365341][ C3] netlink_unicast+0x486/0x750 [ 17.365461][ C3] netlink_sendmsg+0x735/0xc60 [ 17.365581][ C3] ____sys_sendmsg+0x419/0x850 [ 17.365701][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 17.365819][ C3] __sys_sendmsg+0x145/0x1f0 [ 17.365939][ C3] do_syscall_64+0x117/0x590 [ 17.366058][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.366202][ C3] INITIAL USE at: [ 17.366274][ C3] __lock_acquire+0x378/0xc10 [ 17.366396][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.366515][ C3] _raw_spin_lock+0x33/0x40 [ 17.366636][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.366779][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.366897][ C3] addrconf_join_anycast+0x1bc/0x260 [ 17.367017][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 17.367136][ C3] addrconf_dad_completed+0x14b/0xe10 [ 17.367260][ C3] addrconf_dad_begin+0x2e1/0x540 [ 17.367383][ C3] addrconf_dad_work+0x170/0x930 [ 17.367503][ C3] process_one_work+0xdf8/0x1410 [ 17.367624][ C3] worker_thread+0x4f1/0xd60 [ 17.367744][ C3] kthread+0x367/0x460 [ 17.367864][ C3] ret_from_fork+0x474/0x6b0 [ 17.367985][ C3] ret_from_fork_asm+0x11/0x20 [ 17.368102][ C3] } [ 17.368156][ C3] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 17.368302][ C3] ... acquired at: [ 17.368382][ C3] __lock_acquire+0x508/0xc10 [ 17.368479][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.368577][ C3] _raw_spin_lock+0x33/0x40 [ 17.368675][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.368796][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.368892][ C3] addrconf_join_anycast+0x1bc/0x260 [ 17.368988][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 17.369084][ C3] addrconf_dad_completed+0x14b/0xe10 [ 17.369180][ C3] addrconf_dad_begin+0x2e1/0x540 [ 17.369278][ C3] addrconf_dad_work+0x170/0x930 [ 17.369376][ C3] process_one_work+0xdf8/0x1410 [ 17.369472][ C3] worker_thread+0x4f1/0xd60 [ 17.369572][ C3] kthread+0x367/0x460 [ 17.369645][ C3] ret_from_fork+0x474/0x6b0 [ 17.369744][ C3] ret_from_fork_asm+0x11/0x20 [ 17.369840][ C3] [ 17.369891][ C3] -> (&ndev->lock){++.-}-{3:3} { [ 17.369991][ C3] HARDIRQ-ON-W at: [ 17.370064][ C3] __lock_acquire+0x378/0xc10 [ 17.370184][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.370302][ C3] _raw_write_lock_bh+0x38/0x50 [ 17.370428][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 17.370550][ C3] addrconf_notify+0x151/0xf30 [ 17.370673][ C3] notifier_call_chain+0xb0/0x320 [ 17.370792][ C3] __dev_notify_flags+0xde/0x280 [ 17.370911][ C3] netif_change_flags+0xfe/0x190 [ 17.371029][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 17.371149][ C3] rtnl_newlink+0x8d1/0xef0 [ 17.371268][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.371392][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 17.371514][ C3] netlink_unicast+0x486/0x750 [ 17.371636][ C3] netlink_sendmsg+0x735/0xc60 [ 17.371755][ C3] ____sys_sendmsg+0x419/0x850 [ 17.371877][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 17.371999][ C3] __sys_sendmsg+0x145/0x1f0 [ 17.372118][ C3] do_syscall_64+0x117/0x590 [ 17.372240][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.372386][ C3] HARDIRQ-ON-R at: [ 17.372458][ C3] __lock_acquire+0x378/0xc10 [ 17.372579][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.372699][ C3] _raw_read_lock_bh+0x44/0x80 [ 17.372817][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.372959][ C3] inet6_fill_link_af+0x5c/0xe0 [ 17.373079][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.373223][ C3] rtnl_getlink+0x9c9/0xeb0 [ 17.373352][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.373472][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 17.373593][ C3] netlink_unicast+0x486/0x750 [ 17.373713][ C3] netlink_sendmsg+0x735/0xc60 [ 17.373833][ C3] ____sys_sendmsg+0x419/0x850 [ 17.373953][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 17.374075][ C3] __sys_sendmsg+0x145/0x1f0 [ 17.374195][ C3] do_syscall_64+0x117/0x590 [ 17.374319][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.374463][ C3] IN-SOFTIRQ-R at: [ 17.374536][ C3] __lock_acquire+0x378/0xc10 [ 17.374655][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.374777][ C3] _raw_read_lock_bh+0x44/0x80 [ 17.374899][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 17.375019][ C3] ndisc_send_ns+0xf3/0x120 [ 17.375144][ C3] ndisc_solicit+0x314/0x480 [ 17.375264][ C3] neigh_probe+0xb3/0x100 [ 17.375395][ C3] __neigh_event_send+0x802/0x1070 [ 17.375521][ C3] neigh_resolve_output+0xbe/0x140 [ 17.375644][ C3] ip6_finish_output2+0x423/0x1300 [ 17.375765][ C3] ip6_finish_output+0x646/0xda0 [ 17.375886][ C3] ip6_output+0x23f/0x7f0 [ 17.376007][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.376155][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.376280][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.376429][ C3] dev_hard_start_xmit+0xf8/0x690 [ 17.376549][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 17.376668][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 17.376789][ C3] ip_output+0x1ca/0x660 [ 17.376910][ C3] ip_rcv+0xdc/0x3d0 [ 17.377006][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 17.377149][ C3] process_backlog+0x2bc/0x1490 [ 17.377269][ C3] __napi_poll+0xa7/0x3b0 [ 17.377392][ C3] net_rx_action+0x513/0xf50 [ 17.377512][ C3] handle_softirqs+0x1d8/0x940 [ 17.377634][ C3] do_softirq+0xa9/0xe0 [ 17.377753][ C3] __local_bh_enable_ip+0x113/0x140 [ 17.377874][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 17.377994][ C3] packet_snd+0xfad/0x1990 [ 17.378117][ C3] __sys_sendto+0x2c9/0x400 [ 17.378239][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 17.378362][ C3] do_syscall_64+0x117/0x590 [ 17.378482][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.378626][ C3] INITIAL USE at: [ 17.378697][ C3] __lock_acquire+0x378/0xc10 [ 17.378817][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.378938][ C3] _raw_write_lock_bh+0x38/0x50 [ 17.379057][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 17.379177][ C3] addrconf_notify+0x151/0xf30 [ 17.379297][ C3] notifier_call_chain+0xb0/0x320 [ 17.379420][ C3] __dev_notify_flags+0xde/0x280 [ 17.379541][ C3] netif_change_flags+0xfe/0x190 [ 17.379661][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 17.379780][ C3] rtnl_newlink+0x8d1/0xef0 [ 17.379900][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.380020][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 17.380139][ C3] netlink_unicast+0x486/0x750 [ 17.380260][ C3] netlink_sendmsg+0x735/0xc60 [ 17.380384][ C3] ____sys_sendmsg+0x419/0x850 [ 17.380509][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 17.380629][ C3] __sys_sendmsg+0x145/0x1f0 [ 17.380752][ C3] do_syscall_64+0x117/0x590 [ 17.380875][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.381017][ C3] INITIAL READ USE at: [ 17.381090][ C3] __lock_acquire+0x378/0xc10 [ 17.381209][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.381333][ C3] _raw_read_lock_bh+0x44/0x80 [ 17.381458][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.381606][ C3] inet6_fill_link_af+0x5c/0xe0 [ 17.381727][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.381935][ C3] rtnl_getlink+0x9c9/0xeb0 [ 17.382055][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.382175][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 17.382355][ C3] netlink_unicast+0x486/0x750 [ 17.382476][ C3] netlink_sendmsg+0x735/0xc60 [ 17.382596][ C3] ____sys_sendmsg+0x419/0x850 [ 17.382716][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 17.382896][ C3] __sys_sendmsg+0x145/0x1f0 [ 17.383017][ C3] do_syscall_64+0x117/0x590 [ 17.383139][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.383344][ C3] } [ 17.383393][ C3] ... key at: [] __key.37+0x0/0x40 [ 17.383539][ C3] ... acquired at: [ 17.383611][ C3] mark_lock+0x1d7/0xa00 [ 17.383766][ C3] mark_usage+0x42/0x170 [ 17.383863][ C3] __lock_acquire+0x378/0xc10 [ 17.383958][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.384052][ C3] _raw_read_lock_bh+0x44/0x80 [ 17.384206][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 17.384302][ C3] ndisc_send_ns+0xf3/0x120 [ 17.384401][ C3] ndisc_solicit+0x314/0x480 [ 17.384496][ C3] neigh_probe+0xb3/0x100 [ 17.384648][ C3] __neigh_event_send+0x802/0x1070 [ 17.384746][ C3] neigh_resolve_output+0xbe/0x140 [ 17.384842][ C3] ip6_finish_output2+0x423/0x1300 [ 17.384936][ C3] ip6_finish_output+0x646/0xda0 [ 17.385089][ C3] ip6_output+0x23f/0x7f0 [ 17.385184][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.385303][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.385466][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.385586][ C3] dev_hard_start_xmit+0xf8/0x690 [ 17.385681][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 17.385777][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 17.385932][ C3] ip_output+0x1ca/0x660 [ 17.386028][ C3] ip_rcv+0xdc/0x3d0 [ 17.386100][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 17.386223][ C3] process_backlog+0x2bc/0x1490 [ 17.386381][ C3] __napi_poll+0xa7/0x3b0 [ 17.386477][ C3] net_rx_action+0x513/0xf50 [ 17.386572][ C3] handle_softirqs+0x1d8/0x940 [ 17.386667][ C3] do_softirq+0xa9/0xe0 [ 17.386800][ C3] __local_bh_enable_ip+0x113/0x140 [ 17.386893][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 17.386992][ C3] packet_snd+0xfad/0x1990 [ 17.387090][ C3] __sys_sendto+0x2c9/0x400 [ 17.387245][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 17.387344][ C3] do_syscall_64+0x117/0x590 [ 17.387439][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.387559][ C3] [ 17.387607][ C3] [ 17.387607][ C3] stack backtrace: [ 17.387784][ C3] CPU: 3 UID: 0 PID: 357 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 17.387787][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.387790][ C3] Call Trace: [ 17.387791][ C3] [ 17.387792][ C3] dump_stack_lvl+0x6f/0xa0 [ 17.387796][ C3] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 17.387799][ C3] mark_lock_irq+0x989/0x9c0 [ 17.387802][ C3] mark_lock+0x1d7/0xa00 [ 17.387803][ C3] mark_usage+0x42/0x170 [ 17.387805][ C3] __lock_acquire+0x378/0xc10 [ 17.387806][ C3] ? __lock_acquire+0x508/0xc10 [ 17.387808][ C3] lock_acquire.part.0+0xbc/0x260 [ 17.387809][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.387811][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387814][ C3] ? lock_acquire+0x134/0x160 [ 17.387816][ C3] _raw_read_lock_bh+0x44/0x80 [ 17.387818][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.387819][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 17.387821][ C3] ndisc_send_ns+0xf3/0x120 [ 17.387823][ C3] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 17.387825][ C3] ? ndisc_parse_options+0x30/0x30 [ 17.387826][ C3] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 17.387828][ C3] ndisc_solicit+0x314/0x480 [ 17.387830][ C3] ? ndisc_send_ns+0x120/0x120 [ 17.387831][ C3] ? neigh_probe+0x62/0x100 [ 17.387833][ C3] neigh_probe+0xb3/0x100 [ 17.387835][ C3] __neigh_event_send+0x802/0x1070 [ 17.387837][ C3] ? warn_bogus_irq_restore+0x1/0x20 [ 17.387839][ C3] ? ___neigh_create+0x811/0x1070 [ 17.387841][ C3] neigh_resolve_output+0xbe/0x140 [ 17.387843][ C3] ip6_finish_output2+0x423/0x1300 [ 17.387845][ C3] ? ip6_xmit+0x2000/0x2000 [ 17.387847][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 17.387848][ C3] ? find_held_lock+0x2b/0x80 [ 17.387851][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.387852][ C3] ? ip6_mtu+0x15d/0x310 [ 17.387855][ C3] ip6_finish_output+0x646/0xda0 [ 17.387856][ C3] ip6_output+0x23f/0x7f0 [ 17.387858][ C3] ? ip6_finish_output+0xda0/0xda0 [ 17.387860][ C3] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 17.387863][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.387866][ C3] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 17.387868][ C3] ? pskb_expand_head+0x4ac/0xf50 [ 17.387871][ C3] ? __lock_acquire+0x508/0xc10 [ 17.387872][ C3] ? __pskb_copy_fclone+0x1080/0x1080 [ 17.387875][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.387877][ C3] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 17.387879][ C3] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 17.387881][ C3] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 17.387883][ C3] ? __asan_memcpy+0x3c/0x60 [ 17.387887][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.387889][ C3] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 17.387890][ C3] ? sock_def_readable+0x156/0x490 [ 17.387892][ C3] ? find_held_lock+0x2b/0x80 [ 17.387895][ C3] ? dev_queue_xmit_nit+0x642/0x9e0 [ 17.387898][ C3] dev_hard_start_xmit+0xf8/0x690 [ 17.387900][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.387902][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387903][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 17.387906][ C3] ? __lock_acquire+0x508/0xc10 [ 17.387908][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.387909][ C3] ? find_held_lock+0x2b/0x80 [ 17.387911][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.387913][ C3] ? ___neigh_create+0x811/0x1070 [ 17.387915][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.387917][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 17.387919][ C3] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 17.387921][ C3] ? ip4_dst_hoplimit+0x320/0x320 [ 17.387923][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387926][ C3] ip_output+0x1ca/0x660 [ 17.387927][ C3] ? ip_finish_output+0x460/0x460 [ 17.387928][ C3] ? ip4_frag_init+0x720/0x720 [ 17.387930][ C3] ? ip_forward+0xfa7/0x1570 [ 17.387932][ C3] ? process_backlog+0x561/0x1490 [ 17.387934][ C3] ip_rcv+0xdc/0x3d0 [ 17.387935][ C3] ? ip_local_deliver+0x4c0/0x4c0 [ 17.387938][ C3] ? mark_usage+0x61/0x170 [ 17.387939][ C3] ? __lock_acquire+0x508/0xc10 [ 17.387940][ C3] ? init_data_structures_once.part.0+0x1a7/0x450 [ 17.387942][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 17.387943][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 17.387944][ C3] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 17.387946][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387948][ C3] process_backlog+0x2bc/0x1490 [ 17.387950][ C3] __napi_poll+0xa7/0x3b0 [ 17.387952][ C3] net_rx_action+0x513/0xf50 [ 17.387954][ C3] ? __napi_poll+0x3b0/0x3b0 [ 17.387955][ C3] ? find_held_lock+0x2b/0x80 [ 17.387959][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387960][ C3] handle_softirqs+0x1d8/0x940 [ 17.387962][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387964][ C3] ? _local_bh_enable+0xd0/0xd0 [ 17.387965][ C3] ? trace_csd_function_exit+0xb3/0x1a0 [ 17.387967][ C3] ? rcu_is_watching+0x15/0xd0 [ 17.387969][ C3] do_softirq+0xa9/0xe0 [ 17.387970][ C3] [ 17.387971][ C3] [ 17.387972][ C3] ? __dev_queue_xmit+0x946/0x1b60 [ 17.387973][ C3] __local_bh_enable_ip+0x113/0x140 [ 17.387975][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 17.387977][ C3] ? _copy_from_iter+0x1bb/0x1810 [ 17.387981][ C3] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 17.387983][ C3] ? net_dim+0x730/0xd70 [ 17.387985][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.387988][ C3] ? packet_release+0xc70/0xc70 [ 17.387990][ C3] packet_snd+0xfad/0x1990 [ 17.387993][ C3] ? tpacket_snd+0x19e0/0x19e0 [ 17.387995][ C3] ? __might_fault+0x97/0x140 [ 17.387998][ C3] ? __might_fault+0x97/0x140 [ 17.387999][ C3] ? __might_fault+0x97/0x140 [ 17.388000][ C3] __sys_sendto+0x2c9/0x400 [ 17.388002][ C3] ? __ia32_sys_getpeername+0xd0/0xd0 [ 17.388005][ C3] ? sock_ioctl+0x3cb/0x5f0 [ 17.388008][ C3] ? do_user_addr_fault+0x325/0xe30 [ 17.388012][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 17.388014][ C3] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 17.388017][ C3] ? lockdep_hardirqs_on+0x8c/0x130 [ 17.388018][ C3] ? do_syscall_64+0x82/0x590 [ 17.388019][ C3] do_syscall_64+0x117/0x590 [ 17.388020][ C3] ? trace_hardirqs_off+0xd/0x30 [ 17.388022][ C3] ? exc_page_fault+0xee/0x100 [ 17.388024][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.388025][ C3] RIP: 0033:0x7ff0e022a08e [ 17.388028][ 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 [ 17.388030][ C3] RSP: 002b:00007fff3de33a50 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 17.388032][ C3] RAX: ffffffffffffffda RBX: 0000558041ef5b22 RCX: 00007ff0e022a08e [ 17.388034][ C3] RDX: 0000000000000062 RSI: 0000558041ef5b22 RDI: 0000000000000005 [ 17.388035][ C3] RBP: 00007fff3de33a60 R08: 00007fff3de33ab0 R09: 0000000000000014 [ 17.388036][ C3] R10: 0000000000000000 R11: 0000000000000202 R12: 0000558041ef5830 [ 17.388036][ C3] R13: 0000000000000062 R14: 0000000000000005 R15: 0000558041ef5830 [ 17.388039][ C3]