[ 8.553647][ T185] ip (185) used greatest stack depth: 24256 bytes left [ 10.664236][ T282] ip (282) used greatest stack depth: 24240 bytes left [ 10.744941][ T285] 8021q: 802.1Q VLAN Support v1.8 [ 10.905124][ T291] gre: GRE over IPv4 demultiplexer driver [ 10.930751][ T291] ip6_gre: GRE over IPv6 tunneling driver [ 17.477954][ T383] GACT probability NOT on [ 17.584027][ C2] [ 17.584107][ C2] ======================================================== [ 17.584258][ C2] WARNING: possible irq lock inversion dependency detected [ 17.584405][ C2] 7.1.0-rc5-virtme #1 Not tainted [ 17.584508][ C2] -------------------------------------------------------- [ 17.584652][ C2] mausezahn/388 just changed the state of lock: [ 17.584774][ C2] ff1100000cd9ed78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 17.584957][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 17.585100][ C2] (acaddr_hash_lock){+.+.}-{3:3} [ 17.585103][ C2] [ 17.585103][ C2] [ 17.585103][ C2] and interrupts could create inverse lock ordering between them. [ 17.585103][ C2] [ 17.585454][ C2] [ 17.585454][ C2] other info that might help us debug this: [ 17.585592][ C2] Possible interrupt unsafe locking scenario: [ 17.585592][ C2] [ 17.585740][ C2] CPU0 CPU1 [ 17.585836][ C2] ---- ---- [ 17.585931][ C2] lock(acaddr_hash_lock); [ 17.586027][ C2] local_irq_disable(); [ 17.586144][ C2] lock(&ndev->lock); [ 17.586262][ C2] lock(acaddr_hash_lock); [ 17.586383][ C2] [ 17.586457][ C2] lock(&ndev->lock); [ 17.586531][ C2] [ 17.586531][ C2] *** DEADLOCK *** [ 17.586531][ C2] [ 17.586668][ C2] 6 locks held by mausezahn/388: [ 17.586764][ C2] #0: ffffffff8cf77d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 17.586937][ C2] #1: ffffffff8cf77d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 17.587105][ C2] #2: ffffffff8cf77d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 17.587275][ C2] #3: ffffffff8cf77cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 17.587443][ C2] #4: ffffffff8cf77d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 17.587617][ C2] #5: ffffffff8cf77d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 17.587785][ C2] [ 17.587785][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 17.587952][ C2] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 17.588051][ C2] HARDIRQ-ON-W at: [ 17.588126][ C2] __lock_acquire+0x378/0xc10 [ 17.588253][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.588374][ C2] _raw_spin_lock+0x33/0x40 [ 17.588503][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.588646][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.588765][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.588886][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.589006][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.589147][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.589266][ C2] addrconf_dad_work+0x170/0x930 [ 17.589387][ C2] process_one_work+0xdf8/0x1410 [ 17.589515][ C2] worker_thread+0x4f1/0xd60 [ 17.589634][ C2] kthread+0x367/0x460 [ 17.589753][ C2] ret_from_fork+0x474/0x6b0 [ 17.589873][ C2] ret_from_fork_asm+0x11/0x20 [ 17.589992][ C2] SOFTIRQ-ON-W at: [ 17.590064][ C2] __lock_acquire+0x378/0xc10 [ 17.590187][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.590304][ C2] _raw_spin_lock+0x33/0x40 [ 17.590424][ C2] __ipv6_dev_ac_dec+0x236/0x5d0 [ 17.590547][ C2] addrconf_leave_anycast+0x1bc/0x260 [ 17.590691][ C2] __ipv6_ifa_notify+0x6b4/0xad0 [ 17.590813][ C2] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 17.590956][ C2] addrconf_notify+0x339/0xf30 [ 17.591076][ C2] notifier_call_chain+0xb0/0x320 [ 17.591195][ C2] __netdev_upper_dev_link+0x3a5/0x590 [ 17.591337][ C2] netdev_master_upper_dev_link+0x86/0xb0 [ 17.591483][ C2] vrf_add_slave+0xdd/0x210 [vrf] [ 17.591604][ C2] do_set_master+0x357/0x580 [ 17.591724][ C2] do_setlink.isra.0+0xa31/0x2750 [ 17.591841][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.591958][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.592077][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.592200][ C2] netlink_unicast+0x486/0x750 [ 17.592320][ C2] netlink_sendmsg+0x735/0xc60 [ 17.592440][ C2] ____sys_sendmsg+0x419/0x850 [ 17.592565][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.592684][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.592803][ C2] do_syscall_64+0x117/0x590 [ 17.592923][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.593064][ C2] INITIAL USE at: [ 17.593136][ C2] __lock_acquire+0x378/0xc10 [ 17.593257][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.593376][ C2] _raw_spin_lock+0x33/0x40 [ 17.593501][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.593641][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.593760][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.593879][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.593997][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.594118][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.594237][ C2] addrconf_dad_work+0x170/0x930 [ 17.594356][ C2] process_one_work+0xdf8/0x1410 [ 17.594480][ C2] worker_thread+0x4f1/0xd60 [ 17.594600][ C2] kthread+0x367/0x460 [ 17.594721][ C2] ret_from_fork+0x474/0x6b0 [ 17.594841][ C2] ret_from_fork_asm+0x11/0x20 [ 17.594961][ C2] } [ 17.595011][ C2] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 17.595157][ C2] ... acquired at: [ 17.595228][ C2] __lock_acquire+0x508/0xc10 [ 17.595325][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.595423][ C2] _raw_spin_lock+0x33/0x40 [ 17.595523][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.595642][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.595737][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.595831][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.595928][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.596025][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.596121][ C2] addrconf_dad_work+0x170/0x930 [ 17.596217][ C2] process_one_work+0xdf8/0x1410 [ 17.596314][ C2] worker_thread+0x4f1/0xd60 [ 17.596411][ C2] kthread+0x367/0x460 [ 17.596486][ C2] ret_from_fork+0x474/0x6b0 [ 17.596581][ C2] ret_from_fork_asm+0x11/0x20 [ 17.596678][ C2] [ 17.596728][ C2] -> (&ndev->lock){++.-}-{3:3} { [ 17.596826][ C2] HARDIRQ-ON-W at: [ 17.596898][ C2] __lock_acquire+0x378/0xc10 [ 17.597019][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.597139][ C2] _raw_write_lock_bh+0x38/0x50 [ 17.597259][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 17.597381][ C2] addrconf_notify+0x151/0xf30 [ 17.597507][ C2] notifier_call_chain+0xb0/0x320 [ 17.597627][ C2] __dev_notify_flags+0xde/0x280 [ 17.597746][ C2] netif_change_flags+0xfe/0x190 [ 17.597865][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 17.597987][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.598106][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.598224][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.598347][ C2] netlink_unicast+0x486/0x750 [ 17.598471][ C2] netlink_sendmsg+0x735/0xc60 [ 17.598589][ C2] ____sys_sendmsg+0x419/0x850 [ 17.598711][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.598830][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.598951][ C2] do_syscall_64+0x117/0x590 [ 17.599070][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.599212][ C2] HARDIRQ-ON-R at: [ 17.599285][ C2] __lock_acquire+0x378/0xc10 [ 17.599406][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.599530][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.599651][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.599795][ C2] inet6_fill_link_af+0x5c/0xe0 [ 17.599915][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.600057][ C2] rtnl_getlink+0x9c9/0xeb0 [ 17.600179][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.600299][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.600418][ C2] netlink_unicast+0x486/0x750 [ 17.600542][ C2] netlink_sendmsg+0x735/0xc60 [ 17.600663][ C2] ____sys_sendmsg+0x419/0x850 [ 17.600784][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.600906][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.601025][ C2] do_syscall_64+0x117/0x590 [ 17.601144][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.601285][ C2] IN-SOFTIRQ-R at: [ 17.601356][ C2] __lock_acquire+0x378/0xc10 [ 17.601480][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.601599][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.601717][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.601837][ C2] ndisc_send_ns+0xf3/0x120 [ 17.601957][ C2] ndisc_solicit+0x314/0x480 [ 17.602076][ C2] neigh_probe+0xb3/0x100 [ 17.602196][ C2] __neigh_event_send+0x802/0x1070 [ 17.602316][ C2] neigh_resolve_output+0xbe/0x140 [ 17.602435][ C2] ip6_finish_output2+0x423/0x1300 [ 17.602556][ C2] ip6_finish_output+0x646/0xda0 [ 17.602673][ C2] ip6_output+0x23f/0x7f0 [ 17.602794][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.602940][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.603060][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.603203][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.603323][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.603442][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.603567][ C2] ip_output+0x1ca/0x660 [ 17.603684][ C2] ip_rcv+0xdc/0x3d0 [ 17.603780][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.603922][ C2] process_backlog+0x2bc/0x1490 [ 17.604041][ C2] __napi_poll+0xa7/0x3b0 [ 17.604160][ C2] net_rx_action+0x513/0xf50 [ 17.604282][ C2] handle_softirqs+0x1d8/0x940 [ 17.604402][ C2] do_softirq+0xa9/0xe0 [ 17.604526][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.604646][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.604765][ C2] packet_snd+0xfad/0x1990 [ 17.604886][ C2] __sys_sendto+0x2c9/0x400 [ 17.605008][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.605129][ C2] do_syscall_64+0x117/0x590 [ 17.605247][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.605391][ C2] INITIAL USE at: [ 17.605467][ C2] __lock_acquire+0x378/0xc10 [ 17.605586][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.605705][ C2] _raw_write_lock_bh+0x38/0x50 [ 17.605825][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 17.605945][ C2] addrconf_notify+0x151/0xf30 [ 17.606065][ C2] notifier_call_chain+0xb0/0x320 [ 17.606183][ C2] __dev_notify_flags+0xde/0x280 [ 17.606303][ C2] netif_change_flags+0xfe/0x190 [ 17.606422][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 17.606547][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.606664][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.606783][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.606903][ C2] netlink_unicast+0x486/0x750 [ 17.607024][ C2] netlink_sendmsg+0x735/0xc60 [ 17.607145][ C2] ____sys_sendmsg+0x419/0x850 [ 17.607265][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.607384][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.607507][ C2] do_syscall_64+0x117/0x590 [ 17.607625][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.607769][ C2] INITIAL READ USE at: [ 17.607840][ C2] __lock_acquire+0x378/0xc10 [ 17.607959][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.608078][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.608197][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.608339][ C2] inet6_fill_link_af+0x5c/0xe0 [ 17.608462][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.608605][ C2] rtnl_getlink+0x9c9/0xeb0 [ 17.608723][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.608842][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.608962][ C2] netlink_unicast+0x486/0x750 [ 17.609081][ C2] netlink_sendmsg+0x735/0xc60 [ 17.609202][ C2] ____sys_sendmsg+0x419/0x850 [ 17.609321][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.609441][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.609563][ C2] do_syscall_64+0x117/0x590 [ 17.609682][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.609824][ C2] } [ 17.609871][ C2] ... key at: [] __key.37+0x0/0x40 [ 17.610014][ C2] ... acquired at: [ 17.610085][ C2] mark_lock+0x1d7/0xa00 [ 17.610183][ C2] mark_usage+0x42/0x170 [ 17.610278][ C2] __lock_acquire+0x378/0xc10 [ 17.610372][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.610469][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.610565][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.610660][ C2] ndisc_send_ns+0xf3/0x120 [ 17.610755][ C2] ndisc_solicit+0x314/0x480 [ 17.610850][ C2] neigh_probe+0xb3/0x100 [ 17.610946][ C2] __neigh_event_send+0x802/0x1070 [ 17.611042][ C2] neigh_resolve_output+0xbe/0x140 [ 17.611137][ C2] ip6_finish_output2+0x423/0x1300 [ 17.611231][ C2] ip6_finish_output+0x646/0xda0 [ 17.611326][ C2] ip6_output+0x23f/0x7f0 [ 17.611425][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.611548][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.611646][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.611763][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.611859][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.611953][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.612050][ C2] ip_output+0x1ca/0x660 [ 17.612145][ C2] ip_rcv+0xdc/0x3d0 [ 17.612216][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.612337][ C2] process_backlog+0x2bc/0x1490 [ 17.612430][ C2] __napi_poll+0xa7/0x3b0 [ 17.612527][ C2] net_rx_action+0x513/0xf50 [ 17.612619][ C2] handle_softirqs+0x1d8/0x940 [ 17.612715][ C2] do_softirq+0xa9/0xe0 [ 17.612787][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.612883][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.612979][ C2] packet_snd+0xfad/0x1990 [ 17.613074][ C2] __sys_sendto+0x2c9/0x400 [ 17.613169][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.613264][ C2] do_syscall_64+0x117/0x590 [ 17.613359][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.613481][ C2] [ 17.613528][ C2] [ 17.613528][ C2] stack backtrace: [ 17.613647][ C2] CPU: 2 UID: 0 PID: 388 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 17.613651][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.613653][ C2] Call Trace: [ 17.613654][ C2] [ 17.613656][ C2] dump_stack_lvl+0x6f/0xa0 [ 17.613660][ C2] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 17.613663][ C2] mark_lock_irq+0x989/0x9c0 [ 17.613666][ C2] mark_lock+0x1d7/0xa00 [ 17.613668][ C2] mark_usage+0x42/0x170 [ 17.613669][ C2] __lock_acquire+0x378/0xc10 [ 17.613670][ C2] ? __lock_acquire+0x508/0xc10 [ 17.613672][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.613674][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.613676][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613679][ C2] ? lock_acquire+0x134/0x160 [ 17.613681][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.613682][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.613684][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.613686][ C2] ndisc_send_ns+0xf3/0x120 [ 17.613687][ C2] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 17.613689][ C2] ? ndisc_parse_options+0x30/0x30 [ 17.613690][ C2] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 17.613693][ C2] ndisc_solicit+0x314/0x480 [ 17.613694][ C2] ? ndisc_send_ns+0x120/0x120 [ 17.613696][ C2] ? neigh_probe+0x62/0x100 [ 17.613698][ C2] neigh_probe+0xb3/0x100 [ 17.613700][ C2] __neigh_event_send+0x802/0x1070 [ 17.613701][ C2] ? warn_bogus_irq_restore+0x1/0x20 [ 17.613704][ C2] ? ___neigh_create+0x811/0x1070 [ 17.613706][ C2] neigh_resolve_output+0xbe/0x140 [ 17.613708][ C2] ip6_finish_output2+0x423/0x1300 [ 17.613710][ C2] ? ip6_xmit+0x2000/0x2000 [ 17.613712][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 17.613713][ C2] ? find_held_lock+0x2b/0x80 [ 17.613716][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.613717][ C2] ? ip6_mtu+0x15d/0x310 [ 17.613720][ C2] ip6_finish_output+0x646/0xda0 [ 17.613722][ C2] ip6_output+0x23f/0x7f0 [ 17.613723][ C2] ? ip6_finish_output+0xda0/0xda0 [ 17.613725][ C2] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 17.613728][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.613732][ C2] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 17.613733][ C2] ? pskb_expand_head+0x4ac/0xf50 [ 17.613736][ C2] ? __lock_acquire+0x508/0xc10 [ 17.613738][ C2] ? __pskb_copy_fclone+0x1080/0x1080 [ 17.613740][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.613742][ C2] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 17.613744][ C2] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 17.613746][ C2] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 17.613748][ C2] ? __asan_memcpy+0x3c/0x60 [ 17.613752][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.613754][ C2] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 17.613755][ C2] ? sock_def_readable+0x156/0x490 [ 17.613757][ C2] ? find_held_lock+0x2b/0x80 [ 17.613760][ C2] ? dev_queue_xmit_nit+0x642/0x9e0 [ 17.613763][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.613765][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.613767][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613769][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.613771][ C2] ? __lock_acquire+0x508/0xc10 [ 17.613773][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.613775][ C2] ? find_held_lock+0x2b/0x80 [ 17.613777][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.613779][ C2] ? ___neigh_create+0x811/0x1070 [ 17.613780][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.613783][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.613785][ C2] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 17.613787][ C2] ? ip4_dst_hoplimit+0x320/0x320 [ 17.613789][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613791][ C2] ip_output+0x1ca/0x660 [ 17.613792][ C2] ? ip_finish_output+0x460/0x460 [ 17.613793][ C2] ? ip4_frag_init+0x720/0x720 [ 17.613796][ C2] ? ip_forward+0xfa7/0x1570 [ 17.613798][ C2] ? process_backlog+0x561/0x1490 [ 17.613799][ C2] ip_rcv+0xdc/0x3d0 [ 17.613801][ C2] ? ip_local_deliver+0x4c0/0x4c0 [ 17.613803][ C2] ? mark_usage+0x61/0x170 [ 17.613804][ C2] ? __lock_acquire+0x508/0xc10 [ 17.613806][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.613807][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 17.613809][ C2] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 17.613811][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613813][ C2] process_backlog+0x2bc/0x1490 [ 17.613815][ C2] __napi_poll+0xa7/0x3b0 [ 17.613816][ C2] net_rx_action+0x513/0xf50 [ 17.613818][ C2] ? __napi_poll+0x3b0/0x3b0 [ 17.613820][ C2] ? find_held_lock+0x2b/0x80 [ 17.613823][ C2] ? __run_timers+0xab0/0xab0 [ 17.613826][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613827][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613829][ C2] handle_softirqs+0x1d8/0x940 [ 17.613830][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613832][ C2] ? _local_bh_enable+0xd0/0xd0 [ 17.613834][ C2] ? trace_csd_function_exit+0xb3/0x1a0 [ 17.613836][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.613838][ C2] do_softirq+0xa9/0xe0 [ 17.613839][ C2] [ 17.613840][ C2] [ 17.613841][ C2] ? __dev_queue_xmit+0x946/0x1b60 [ 17.613842][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.613844][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.613846][ C2] ? _copy_from_iter+0x1bb/0x1810 [ 17.613850][ C2] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 17.613852][ C2] ? net_dim+0x730/0xd70 [ 17.613854][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.613857][ C2] ? packet_release+0xc70/0xc70 [ 17.613860][ C2] packet_snd+0xfad/0x1990 [ 17.613862][ C2] ? tpacket_snd+0x19e0/0x19e0 [ 17.613864][ C2] ? __might_fault+0x97/0x140 [ 17.613867][ C2] ? __might_fault+0x97/0x140 [ 17.613868][ C2] ? __might_fault+0x97/0x140 [ 17.613870][ C2] __sys_sendto+0x2c9/0x400 [ 17.613872][ C2] ? __ia32_sys_getpeername+0xd0/0xd0 [ 17.613875][ C2] ? sock_ioctl+0x3cb/0x5f0 [ 17.613878][ C2] ? do_user_addr_fault+0x325/0xe30 [ 17.613881][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.613883][ C2] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 17.613886][ C2] ? lockdep_hardirqs_on+0x8c/0x130 [ 17.613888][ C2] ? do_syscall_64+0x82/0x590 [ 17.613889][ C2] do_syscall_64+0x117/0x590 [ 17.613890][ C2] ? trace_hardirqs_off+0xd/0x30 [ 17.613892][ C2] ? exc_page_fault+0xee/0x100 [ 17.613893][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.613895][ C2] RIP: 0033:0x7fe9ffdb908e [ 17.613898][ 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 [ 17.613900][ C2] RSP: 002b:00007ffd82349c90 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 17.613902][ C2] RAX: ffffffffffffffda RBX: 000056398cf88b22 RCX: 00007fe9ffdb908e [ 17.613903][ C2] RDX: 0000000000000062 RSI: 000056398cf88b22 RDI: 0000000000000005 [ 17.613904][ C2] RBP: 00007ffd82349ca0 R08: 00007ffd82349cf0 R09: 0000000000000014 [ 17.613905][ C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000056398cf88830 [ 17.613906][ C2] R13: 0000000000000062 R14: 0000000000000005 R15: 000056398cf88830 [ 17.613908][ C2]