[ 33.608325][ T526] ip6_gre: GRE over IPv6 tunneling driver [ 40.069543][ T612] GACT probability NOT on [ 40.178628][ C3] [ 40.178711][ C3] ======================================================== [ 40.178870][ C3] WARNING: possible irq lock inversion dependency detected [ 40.179019][ C3] 7.1.0-rc5-virtme #1 Not tainted [ 40.179126][ C3] -------------------------------------------------------- [ 40.179275][ C3] mausezahn/617 just changed the state of lock: [ 40.179399][ C3] ff1100000cf06d78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 40.179581][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 40.179732][ C3] (acaddr_hash_lock){+.+.}-{3:3} [ 40.179734][ C3] [ 40.179734][ C3] [ 40.179734][ C3] and interrupts could create inverse lock ordering between them. [ 40.179734][ C3] [ 40.180096][ C3] [ 40.180096][ C3] other info that might help us debug this: [ 40.180245][ C3] Possible interrupt unsafe locking scenario: [ 40.180245][ C3] [ 40.180394][ C3] CPU0 CPU1 [ 40.180493][ C3] ---- ---- [ 40.180594][ C3] lock(acaddr_hash_lock); [ 40.180694][ C3] local_irq_disable(); [ 40.180817][ C3] lock(&ndev->lock); [ 40.180940][ C3] lock(acaddr_hash_lock); [ 40.181063][ C3] [ 40.181143][ C3] lock(&ndev->lock); [ 40.181226][ C3] [ 40.181226][ C3] *** DEADLOCK *** [ 40.181226][ C3] [ 40.181371][ C3] 6 locks held by mausezahn/617: [ 40.181472][ C3] #0: ffffffffb8777d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 40.181652][ C3] #1: ffffffffb8777d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 40.181826][ C3] #2: ffffffffb8777d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 40.182008][ C3] #3: ffffffffb8777cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 40.182183][ C3] #4: ffffffffb8777d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 40.182361][ C3] #5: ffffffffb8777d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 40.182535][ C3] [ 40.182535][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 40.182706][ C3] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 40.182809][ C3] HARDIRQ-ON-W at: [ 40.182886][ C3] __lock_acquire+0x378/0xc10 [ 40.183014][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.183136][ C3] _raw_spin_lock+0x33/0x40 [ 40.183268][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.183420][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.183542][ C3] addrconf_join_anycast+0x1bc/0x260 [ 40.183668][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 40.183792][ C3] addrconf_dad_completed+0x14b/0xe10 [ 40.183942][ C3] addrconf_dad_begin+0x2e1/0x540 [ 40.184067][ C3] addrconf_dad_work+0x170/0x930 [ 40.184191][ C3] process_one_work+0xdf8/0x1410 [ 40.184320][ C3] worker_thread+0x4f1/0xd60 [ 40.184449][ C3] kthread+0x367/0x460 [ 40.184577][ C3] ret_from_fork+0x474/0x6b0 [ 40.184701][ C3] ret_from_fork_asm+0x11/0x20 [ 40.184825][ C3] SOFTIRQ-ON-W at: [ 40.184902][ C3] __lock_acquire+0x378/0xc10 [ 40.185026][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.185149][ C3] _raw_spin_lock+0x33/0x40 [ 40.185277][ C3] __ipv6_dev_ac_dec+0x236/0x5d0 [ 40.185401][ C3] addrconf_leave_anycast+0x1bc/0x260 [ 40.185550][ C3] __ipv6_ifa_notify+0x6b4/0xad0 [ 40.185675][ C3] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 40.185825][ C3] addrconf_notify+0x339/0xf30 [ 40.185954][ C3] notifier_call_chain+0xb0/0x320 [ 40.186078][ C3] __netdev_upper_dev_link+0x3a5/0x590 [ 40.186232][ C3] netdev_master_upper_dev_link+0x86/0xb0 [ 40.186382][ C3] vrf_add_slave+0xdd/0x210 [vrf] [ 40.186509][ C3] do_set_master+0x357/0x580 [ 40.186638][ C3] do_setlink.isra.0+0xa31/0x2750 [ 40.186761][ C3] rtnl_newlink+0x8d1/0xef0 [ 40.186886][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.187010][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 40.187135][ C3] netlink_unicast+0x486/0x750 [ 40.187263][ C3] netlink_sendmsg+0x735/0xc60 [ 40.187387][ C3] ____sys_sendmsg+0x419/0x850 [ 40.187513][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 40.187637][ C3] __sys_sendmsg+0x145/0x1f0 [ 40.187761][ C3] do_syscall_64+0x117/0x590 [ 40.187886][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.188036][ C3] INITIAL USE at: [ 40.188111][ C3] __lock_acquire+0x378/0xc10 [ 40.188238][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.188361][ C3] _raw_spin_lock+0x33/0x40 [ 40.188485][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.188636][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.188762][ C3] addrconf_join_anycast+0x1bc/0x260 [ 40.188885][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 40.189008][ C3] addrconf_dad_completed+0x14b/0xe10 [ 40.189131][ C3] addrconf_dad_begin+0x2e1/0x540 [ 40.189263][ C3] addrconf_dad_work+0x170/0x930 [ 40.189389][ C3] process_one_work+0xdf8/0x1410 [ 40.189512][ C3] worker_thread+0x4f1/0xd60 [ 40.189635][ C3] kthread+0x367/0x460 [ 40.189757][ C3] ret_from_fork+0x474/0x6b0 [ 40.189881][ C3] ret_from_fork_asm+0x11/0x20 [ 40.190010][ C3] } [ 40.190062][ C3] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 40.190217][ C3] ... acquired at: [ 40.190293][ C3] __lock_acquire+0x508/0xc10 [ 40.190393][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.190492][ C3] _raw_spin_lock+0x33/0x40 [ 40.190591][ C3] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 40.190721][ C3] __ipv6_dev_ac_inc+0x57e/0x930 [ 40.190820][ C3] addrconf_join_anycast+0x1bc/0x260 [ 40.190921][ C3] __ipv6_ifa_notify+0x75b/0xad0 [ 40.191019][ C3] addrconf_dad_completed+0x14b/0xe10 [ 40.191122][ C3] addrconf_dad_begin+0x2e1/0x540 [ 40.191224][ C3] addrconf_dad_work+0x170/0x930 [ 40.191323][ C3] process_one_work+0xdf8/0x1410 [ 40.191423][ C3] worker_thread+0x4f1/0xd60 [ 40.191522][ C3] kthread+0x367/0x460 [ 40.191602][ C3] ret_from_fork+0x474/0x6b0 [ 40.191705][ C3] ret_from_fork_asm+0x11/0x20 [ 40.191810][ C3] [ 40.191862][ C3] -> (&ndev->lock){++.-}-{3:3} { [ 40.191964][ C3] HARDIRQ-ON-W at: [ 40.192043][ C3] __lock_acquire+0x378/0xc10 [ 40.192167][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.192297][ C3] _raw_write_lock_bh+0x38/0x50 [ 40.192419][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 40.192542][ C3] addrconf_notify+0x151/0xf30 [ 40.192666][ C3] notifier_call_chain+0xb0/0x320 [ 40.192791][ C3] __dev_notify_flags+0xde/0x280 [ 40.192915][ C3] netif_change_flags+0xfe/0x190 [ 40.193042][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 40.193165][ C3] rtnl_newlink+0x8d1/0xef0 [ 40.193292][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.193417][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 40.193543][ C3] netlink_unicast+0x486/0x750 [ 40.193667][ C3] netlink_sendmsg+0x735/0xc60 [ 40.193792][ C3] ____sys_sendmsg+0x419/0x850 [ 40.193917][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 40.194042][ C3] __sys_sendmsg+0x145/0x1f0 [ 40.194173][ C3] do_syscall_64+0x117/0x590 [ 40.194304][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.194455][ C3] HARDIRQ-ON-R at: [ 40.194530][ C3] __lock_acquire+0x378/0xc10 [ 40.194655][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.194779][ C3] _raw_read_lock_bh+0x44/0x80 [ 40.194922][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 40.195069][ C3] inet6_fill_link_af+0x5c/0xe0 [ 40.195199][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 40.195347][ C3] rtnl_getlink+0x9c9/0xeb0 [ 40.195475][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.195598][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 40.195724][ C3] netlink_unicast+0x486/0x750 [ 40.195848][ C3] netlink_sendmsg+0x735/0xc60 [ 40.195978][ C3] ____sys_sendmsg+0x419/0x850 [ 40.196102][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 40.196249][ C3] __sys_sendmsg+0x145/0x1f0 [ 40.196414][ C3] do_syscall_64+0x117/0x590 [ 40.196583][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.196782][ C3] IN-SOFTIRQ-R at: [ 40.196887][ C3] __lock_acquire+0x378/0xc10 [ 40.197062][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.197249][ C3] _raw_read_lock_bh+0x44/0x80 [ 40.197437][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 40.197613][ C3] ndisc_send_ns+0xf3/0x120 [ 40.197787][ C3] ndisc_solicit+0x314/0x480 [ 40.197937][ C3] neigh_probe+0xb3/0x100 [ 40.198064][ C3] __neigh_event_send+0x802/0x1070 [ 40.198190][ C3] neigh_resolve_output+0xbe/0x140 [ 40.198322][ C3] ip6_finish_output2+0x423/0x1300 [ 40.198451][ C3] ip6_finish_output+0x646/0xda0 [ 40.198577][ C3] ip6_output+0x23f/0x7f0 [ 40.198703][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.198857][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.198983][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.199135][ C3] dev_hard_start_xmit+0xf8/0x690 [ 40.199267][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 40.199393][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 40.199519][ C3] ip_output+0x1ca/0x660 [ 40.199645][ C3] ip_rcv+0xdc/0x3d0 [ 40.199746][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 40.199896][ C3] process_backlog+0x2bc/0x1490 [ 40.200021][ C3] __napi_poll+0xa7/0x3b0 [ 40.200146][ C3] net_rx_action+0x513/0xf50 [ 40.200276][ C3] handle_softirqs+0x1d8/0x940 [ 40.200402][ C3] do_softirq+0xa9/0xe0 [ 40.200529][ C3] __local_bh_enable_ip+0x113/0x140 [ 40.200657][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 40.200781][ C3] packet_snd+0xfad/0x1990 [ 40.200910][ C3] __sys_sendto+0x2c9/0x400 [ 40.201036][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 40.201160][ C3] do_syscall_64+0x117/0x590 [ 40.201292][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.201446][ C3] INITIAL USE at: [ 40.201523][ C3] __lock_acquire+0x378/0xc10 [ 40.201649][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.201777][ C3] _raw_write_lock_bh+0x38/0x50 [ 40.201903][ C3] addrconf_permanent_addr+0x108/0x9c0 [ 40.202030][ C3] addrconf_notify+0x151/0xf30 [ 40.202154][ C3] notifier_call_chain+0xb0/0x320 [ 40.202281][ C3] __dev_notify_flags+0xde/0x280 [ 40.202408][ C3] netif_change_flags+0xfe/0x190 [ 40.202530][ C3] do_setlink.isra.0+0x1cc3/0x2750 [ 40.202659][ C3] rtnl_newlink+0x8d1/0xef0 [ 40.202782][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.202910][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 40.203065][ C3] netlink_unicast+0x486/0x750 [ 40.203189][ C3] netlink_sendmsg+0x735/0xc60 [ 40.203319][ C3] ____sys_sendmsg+0x419/0x850 [ 40.203514][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 40.203643][ C3] __sys_sendmsg+0x145/0x1f0 [ 40.203772][ C3] do_syscall_64+0x117/0x590 [ 40.203960][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.204109][ C3] INITIAL READ USE at: [ 40.204190][ C3] __lock_acquire+0x378/0xc10 [ 40.204322][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.204511][ C3] _raw_read_lock_bh+0x44/0x80 [ 40.204637][ C3] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 40.204786][ C3] inet6_fill_link_af+0x5c/0xe0 [ 40.204972][ C3] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 40.205123][ C3] rtnl_getlink+0x9c9/0xeb0 [ 40.205258][ C3] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 40.205445][ C3] netlink_rcv_skb+0x14e/0x3a0 [ 40.205571][ C3] netlink_unicast+0x486/0x750 [ 40.205695][ C3] netlink_sendmsg+0x735/0xc60 [ 40.205883][ C3] ____sys_sendmsg+0x419/0x850 [ 40.206009][ C3] ___sys_sendmsg+0x14e/0x1d0 [ 40.206135][ C3] __sys_sendmsg+0x145/0x1f0 [ 40.206328][ C3] do_syscall_64+0x117/0x590 [ 40.206454][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.206603][ C3] } [ 40.206655][ C3] ... key at: [] __key.37+0x0/0x40 [ 40.206873][ C3] ... acquired at: [ 40.206948][ C3] mark_lock+0x1d7/0xa00 [ 40.207048][ C3] mark_usage+0x42/0x170 [ 40.207152][ C3] __lock_acquire+0x378/0xc10 [ 40.207257][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.207359][ C3] _raw_read_lock_bh+0x44/0x80 [ 40.207459][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 40.207622][ C3] ndisc_send_ns+0xf3/0x120 [ 40.207722][ C3] ndisc_solicit+0x314/0x480 [ 40.207821][ C3] neigh_probe+0xb3/0x100 [ 40.207922][ C3] __neigh_event_send+0x802/0x1070 [ 40.208086][ C3] neigh_resolve_output+0xbe/0x140 [ 40.208189][ C3] ip6_finish_output2+0x423/0x1300 [ 40.208295][ C3] ip6_finish_output+0x646/0xda0 [ 40.208396][ C3] ip6_output+0x23f/0x7f0 [ 40.208557][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.208684][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.208785][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.208909][ C3] dev_hard_start_xmit+0xf8/0x690 [ 40.209072][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 40.209172][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 40.209280][ C3] ip_output+0x1ca/0x660 [ 40.209381][ C3] ip_rcv+0xdc/0x3d0 [ 40.209518][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 40.209648][ C3] process_backlog+0x2bc/0x1490 [ 40.209753][ C3] __napi_poll+0xa7/0x3b0 [ 40.209857][ C3] net_rx_action+0x513/0xf50 [ 40.210020][ C3] handle_softirqs+0x1d8/0x940 [ 40.210121][ C3] do_softirq+0xa9/0xe0 [ 40.210201][ C3] __local_bh_enable_ip+0x113/0x140 [ 40.210302][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 40.210465][ C3] packet_snd+0xfad/0x1990 [ 40.210567][ C3] __sys_sendto+0x2c9/0x400 [ 40.210668][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 40.210768][ C3] do_syscall_64+0x117/0x590 [ 40.210929][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.211055][ C3] [ 40.211110][ C3] [ 40.211110][ C3] stack backtrace: [ 40.211240][ C3] CPU: 3 UID: 0 PID: 617 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 40.211244][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 40.211246][ C3] Call Trace: [ 40.211247][ C3] [ 40.211248][ C3] dump_stack_lvl+0x6f/0xa0 [ 40.211253][ C3] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 40.211257][ C3] mark_lock_irq+0x989/0x9c0 [ 40.211260][ C3] mark_lock+0x1d7/0xa00 [ 40.211262][ C3] mark_usage+0x42/0x170 [ 40.211263][ C3] __lock_acquire+0x378/0xc10 [ 40.211264][ C3] ? __lock_acquire+0x508/0xc10 [ 40.211267][ C3] lock_acquire.part.0+0xbc/0x260 [ 40.211268][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 40.211270][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211273][ C3] ? lock_acquire+0x134/0x160 [ 40.211275][ C3] _raw_read_lock_bh+0x44/0x80 [ 40.211277][ C3] ? ipv6_get_lladdr+0xa8/0x3f0 [ 40.211279][ C3] ipv6_get_lladdr+0xa8/0x3f0 [ 40.211281][ C3] ndisc_send_ns+0xf3/0x120 [ 40.211282][ C3] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 40.211285][ C3] ? ndisc_parse_options+0x30/0x30 [ 40.211286][ C3] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 40.211288][ C3] ndisc_solicit+0x314/0x480 [ 40.211290][ C3] ? ndisc_send_ns+0x120/0x120 [ 40.211292][ C3] ? neigh_probe+0x62/0x100 [ 40.211294][ C3] neigh_probe+0xb3/0x100 [ 40.211296][ C3] __neigh_event_send+0x802/0x1070 [ 40.211298][ C3] ? warn_bogus_irq_restore+0x1/0x20 [ 40.211300][ C3] ? ___neigh_create+0x811/0x1070 [ 40.211303][ C3] neigh_resolve_output+0xbe/0x140 [ 40.211305][ C3] ip6_finish_output2+0x423/0x1300 [ 40.211308][ C3] ? ip6_xmit+0x2000/0x2000 [ 40.211309][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 40.211310][ C3] ? find_held_lock+0x2b/0x80 [ 40.211313][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 40.211315][ C3] ? ip6_mtu+0x15d/0x310 [ 40.211317][ C3] ip6_finish_output+0x646/0xda0 [ 40.211319][ C3] ip6_output+0x23f/0x7f0 [ 40.211321][ C3] ? ip6_finish_output+0xda0/0xda0 [ 40.211323][ C3] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 40.211326][ C3] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 40.211330][ C3] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 40.211332][ C3] ? pskb_expand_head+0x4ac/0xf50 [ 40.211335][ C3] ? __lock_acquire+0x508/0xc10 [ 40.211337][ C3] ? __pskb_copy_fclone+0x1080/0x1080 [ 40.211339][ C3] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 40.211342][ C3] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 40.211344][ C3] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 40.211346][ C3] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 40.211348][ C3] ? __asan_memcpy+0x3c/0x60 [ 40.211352][ C3] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 40.211355][ C3] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 40.211356][ C3] ? sock_def_readable+0x156/0x490 [ 40.211358][ C3] ? find_held_lock+0x2b/0x80 [ 40.211361][ C3] ? dev_queue_xmit_nit+0x642/0x9e0 [ 40.211364][ C3] dev_hard_start_xmit+0xf8/0x690 [ 40.211366][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 40.211368][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211370][ C3] __dev_queue_xmit+0xbf4/0x1b60 [ 40.211373][ C3] ? __lock_acquire+0x508/0xc10 [ 40.211375][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 40.211377][ C3] ? find_held_lock+0x2b/0x80 [ 40.211379][ C3] ? __lock_release.isra.0+0x6b/0x1a0 [ 40.211381][ C3] ? ___neigh_create+0x811/0x1070 [ 40.211383][ C3] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 40.211385][ C3] ip_finish_output2+0x5b9/0x1bc0 [ 40.211388][ C3] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 40.211390][ C3] ? ip4_dst_hoplimit+0x320/0x320 [ 40.211392][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211394][ C3] ip_output+0x1ca/0x660 [ 40.211396][ C3] ? ip_finish_output+0x460/0x460 [ 40.211397][ C3] ? ip4_frag_init+0x720/0x720 [ 40.211399][ C3] ? ip_forward+0xfa7/0x1570 [ 40.211402][ C3] ? process_backlog+0x561/0x1490 [ 40.211403][ C3] ip_rcv+0xdc/0x3d0 [ 40.211405][ C3] ? ip_local_deliver+0x4c0/0x4c0 [ 40.211407][ C3] ? mark_usage+0x61/0x170 [ 40.211409][ C3] ? __lock_acquire+0x508/0xc10 [ 40.211410][ C3] ? init_data_structures_once.part.0+0x1a7/0x450 [ 40.211412][ C3] __netif_receive_skb_one_core+0xfc/0x180 [ 40.211413][ C3] ? lock_acquire.part.0+0xbc/0x260 [ 40.211415][ C3] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 40.211417][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211419][ C3] process_backlog+0x2bc/0x1490 [ 40.211421][ C3] __napi_poll+0xa7/0x3b0 [ 40.211423][ C3] net_rx_action+0x513/0xf50 [ 40.211425][ C3] ? __napi_poll+0x3b0/0x3b0 [ 40.211427][ C3] ? find_held_lock+0x2b/0x80 [ 40.211430][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211432][ C3] handle_softirqs+0x1d8/0x940 [ 40.211434][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211436][ C3] ? _local_bh_enable+0xd0/0xd0 [ 40.211438][ C3] ? trace_csd_function_exit+0xb3/0x1a0 [ 40.211440][ C3] ? rcu_is_watching+0x15/0xd0 [ 40.211442][ C3] do_softirq+0xa9/0xe0 [ 40.211444][ C3] [ 40.211444][ C3] [ 40.211445][ C3] ? __dev_queue_xmit+0x946/0x1b60 [ 40.211447][ C3] __local_bh_enable_ip+0x113/0x140 [ 40.211448][ C3] __dev_queue_xmit+0x95b/0x1b60 [ 40.211451][ C3] ? _copy_from_iter+0x1bb/0x1810 [ 40.211455][ C3] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 40.211457][ C3] ? net_dim+0x730/0xd70 [ 40.211459][ C3] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 40.211462][ C3] ? packet_release+0xc70/0xc70 [ 40.211465][ C3] packet_snd+0xfad/0x1990 [ 40.211468][ C3] ? tpacket_snd+0x19e0/0x19e0 [ 40.211470][ C3] ? __might_fault+0x97/0x140 [ 40.211473][ C3] ? __might_fault+0x97/0x140 [ 40.211474][ C3] ? __might_fault+0x97/0x140 [ 40.211476][ C3] __sys_sendto+0x2c9/0x400 [ 40.211478][ C3] ? __ia32_sys_getpeername+0xd0/0xd0 [ 40.211481][ C3] ? sock_ioctl+0x3cb/0x5f0 [ 40.211484][ C3] ? do_user_addr_fault+0x325/0xe30 [ 40.211488][ C3] __x64_sys_sendto+0xe4/0x1f0 [ 40.211490][ C3] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 40.211493][ C3] ? lockdep_hardirqs_on+0x8c/0x130 [ 40.211495][ C3] ? do_syscall_64+0x82/0x590 [ 40.211496][ C3] do_syscall_64+0x117/0x590 [ 40.211497][ C3] ? trace_hardirqs_off+0xd/0x30 [ 40.211499][ C3] ? exc_page_fault+0xee/0x100 [ 40.211501][ C3] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 40.211502][ C3] RIP: 0033:0x7f1bf752508e [ 40.211505][ 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 [ 40.211507][ C3] RSP: 002b:00007ffd1c13e9d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 40.211510][ C3] RAX: ffffffffffffffda RBX: 000055cda2b24b22 RCX: 00007f1bf752508e [ 40.211511][ C3] RDX: 0000000000000062 RSI: 000055cda2b24b22 RDI: 0000000000000005 [ 40.211512][ C3] RBP: 00007ffd1c13e9e0 R08: 00007ffd1c13ea30 R09: 0000000000000014 [ 40.211513][ C3] R10: 0000000000000000 R11: 0000000000000202 R12: 000055cda2b24830 [ 40.211514][ C3] R13: 0000000000000062 R14: 0000000000000005 R15: 000055cda2b24830 [ 40.211517][ C3]