[ 8.604989][ T185] ip (185) used greatest stack depth: 24240 bytes left [ 10.335518][ T269] 8021q: 802.1Q VLAN Support v1.8 [ 10.440752][ T274] gre: GRE over IPv4 demultiplexer driver [ 10.470795][ T274] ip6_gre: GRE over IPv6 tunneling driver [ 16.811487][ T360] GACT probability NOT on [ 16.911157][ C2] [ 16.911234][ C2] ======================================================== [ 16.911387][ C2] WARNING: possible irq lock inversion dependency detected [ 16.911527][ C2] 7.1.0-rc5-virtme #1 Not tainted [ 16.911624][ C2] -------------------------------------------------------- [ 16.911763][ C2] mausezahn/366 just changed the state of lock: [ 16.911880][ C2] ff1100000c8e0d78 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 16.912052][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 16.912191][ C2] (acaddr_hash_lock){+.+.}-{3:3} [ 16.912194][ C2] [ 16.912194][ C2] [ 16.912194][ C2] and interrupts could create inverse lock ordering between them. [ 16.912194][ C2] [ 16.912544][ C2] [ 16.912544][ C2] other info that might help us debug this: [ 16.912680][ C2] Possible interrupt unsafe locking scenario: [ 16.912680][ C2] [ 16.912820][ C2] CPU0 CPU1 [ 16.912916][ C2] ---- ---- [ 16.913008][ C2] lock(acaddr_hash_lock); [ 16.913104][ C2] local_irq_disable(); [ 16.913222][ C2] lock(&ndev->lock); [ 16.913345][ C2] lock(acaddr_hash_lock); [ 16.913462][ C2] [ 16.913534][ C2] lock(&ndev->lock); [ 16.913606][ C2] [ 16.913606][ C2] *** DEADLOCK *** [ 16.913606][ C2] [ 16.913744][ C2] 6 locks held by mausezahn/366: [ 16.913839][ C2] #0: ffffffff9b577d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 16.914006][ C2] #1: ffffffff9b577d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 16.914172][ C2] #2: ffffffff9b577d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 16.914340][ C2] #3: ffffffff9b577cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 16.914505][ C2] #4: ffffffff9b577d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 16.914669][ C2] #5: ffffffff9b577d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 16.914836][ C2] [ 16.914836][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 16.915000][ C2] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 16.915099][ C2] HARDIRQ-ON-W at: [ 16.915173][ C2] __lock_acquire+0x378/0xc10 [ 16.915300][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.915419][ C2] _raw_spin_lock+0x33/0x40 [ 16.915538][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.915679][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.915798][ C2] addrconf_join_anycast+0x1bc/0x260 [ 16.915916][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 16.916034][ C2] addrconf_dad_completed+0x14b/0xe10 [ 16.916175][ C2] addrconf_dad_begin+0x2e1/0x540 [ 16.916299][ C2] addrconf_dad_work+0x170/0x930 [ 16.916417][ C2] process_one_work+0xdf8/0x1410 [ 16.916538][ C2] worker_thread+0x4f1/0xd60 [ 16.916656][ C2] kthread+0x367/0x460 [ 16.916776][ C2] ret_from_fork+0x474/0x6b0 [ 16.916897][ C2] ret_from_fork_asm+0x11/0x20 [ 16.917017][ C2] SOFTIRQ-ON-W at: [ 16.917088][ C2] __lock_acquire+0x378/0xc10 [ 16.917206][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.917327][ C2] _raw_spin_lock+0x33/0x40 [ 16.917444][ C2] __ipv6_dev_ac_dec+0x236/0x5d0 [ 16.917562][ C2] addrconf_leave_anycast+0x1bc/0x260 [ 16.917705][ C2] __ipv6_ifa_notify+0x6b4/0xad0 [ 16.917824][ C2] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 16.917966][ C2] addrconf_notify+0x339/0xf30 [ 16.918085][ C2] notifier_call_chain+0xb0/0x320 [ 16.918202][ C2] __netdev_upper_dev_link+0x3a5/0x590 [ 16.918348][ C2] netdev_master_upper_dev_link+0x86/0xb0 [ 16.918489][ C2] vrf_add_slave+0xdd/0x210 [vrf] [ 16.918610][ C2] do_set_master+0x357/0x580 [ 16.918731][ C2] do_setlink.isra.0+0xa31/0x2750 [ 16.918850][ C2] rtnl_newlink+0x8d1/0xef0 [ 16.918968][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.919087][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 16.919207][ C2] netlink_unicast+0x486/0x750 [ 16.919328][ C2] netlink_sendmsg+0x735/0xc60 [ 16.919445][ C2] ____sys_sendmsg+0x419/0x850 [ 16.919563][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 16.919681][ C2] __sys_sendmsg+0x145/0x1f0 [ 16.919800][ C2] do_syscall_64+0x117/0x590 [ 16.919920][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.920062][ C2] INITIAL USE at: [ 16.920134][ C2] __lock_acquire+0x378/0xc10 [ 16.920253][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.920371][ C2] _raw_spin_lock+0x33/0x40 [ 16.920489][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.920631][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.920749][ C2] addrconf_join_anycast+0x1bc/0x260 [ 16.920867][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 16.920985][ C2] addrconf_dad_completed+0x14b/0xe10 [ 16.921103][ C2] addrconf_dad_begin+0x2e1/0x540 [ 16.921221][ C2] addrconf_dad_work+0x170/0x930 [ 16.921343][ C2] process_one_work+0xdf8/0x1410 [ 16.921461][ C2] worker_thread+0x4f1/0xd60 [ 16.921578][ C2] kthread+0x367/0x460 [ 16.921697][ C2] ret_from_fork+0x474/0x6b0 [ 16.921817][ C2] ret_from_fork_asm+0x11/0x20 [ 16.921936][ C2] } [ 16.921986][ C2] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 16.922131][ C2] ... acquired at: [ 16.922203][ C2] __lock_acquire+0x508/0xc10 [ 16.922301][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.922393][ C2] _raw_spin_lock+0x33/0x40 [ 16.922486][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 16.922605][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 16.922699][ C2] addrconf_join_anycast+0x1bc/0x260 [ 16.922793][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 16.922887][ C2] addrconf_dad_completed+0x14b/0xe10 [ 16.922981][ C2] addrconf_dad_begin+0x2e1/0x540 [ 16.923076][ C2] addrconf_dad_work+0x170/0x930 [ 16.923172][ C2] process_one_work+0xdf8/0x1410 [ 16.923270][ C2] worker_thread+0x4f1/0xd60 [ 16.923366][ C2] kthread+0x367/0x460 [ 16.923437][ C2] ret_from_fork+0x474/0x6b0 [ 16.923531][ C2] ret_from_fork_asm+0x11/0x20 [ 16.923625][ C2] [ 16.923673][ C2] -> (&ndev->lock){++.-}-{3:3} { [ 16.923769][ C2] HARDIRQ-ON-W at: [ 16.923843][ C2] __lock_acquire+0x378/0xc10 [ 16.923963][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.924080][ C2] _raw_write_lock_bh+0x38/0x50 [ 16.924198][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 16.924322][ C2] addrconf_notify+0x151/0xf30 [ 16.924439][ C2] notifier_call_chain+0xb0/0x320 [ 16.924557][ C2] __dev_notify_flags+0xde/0x280 [ 16.924675][ C2] netif_change_flags+0xfe/0x190 [ 16.924793][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 16.924911][ C2] rtnl_newlink+0x8d1/0xef0 [ 16.925028][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.925147][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 16.925267][ C2] netlink_unicast+0x486/0x750 [ 16.925385][ C2] netlink_sendmsg+0x735/0xc60 [ 16.925502][ C2] ____sys_sendmsg+0x419/0x850 [ 16.925621][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 16.925740][ C2] __sys_sendmsg+0x145/0x1f0 [ 16.925861][ C2] do_syscall_64+0x117/0x590 [ 16.925979][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.926120][ C2] HARDIRQ-ON-R at: [ 16.926191][ C2] __lock_acquire+0x378/0xc10 [ 16.926314][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.926431][ C2] _raw_read_lock_bh+0x44/0x80 [ 16.926551][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 16.926692][ C2] inet6_fill_link_af+0x5c/0xe0 [ 16.926809][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 16.926951][ C2] rtnl_getlink+0x9c9/0xeb0 [ 16.927068][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.927185][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 16.927307][ C2] netlink_unicast+0x486/0x750 [ 16.927424][ C2] netlink_sendmsg+0x735/0xc60 [ 16.927542][ C2] ____sys_sendmsg+0x419/0x850 [ 16.927660][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 16.927779][ C2] __sys_sendmsg+0x145/0x1f0 [ 16.927899][ C2] do_syscall_64+0x117/0x590 [ 16.928018][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.928159][ C2] IN-SOFTIRQ-R at: [ 16.928230][ C2] __lock_acquire+0x378/0xc10 [ 16.928350][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.928466][ C2] _raw_read_lock_bh+0x44/0x80 [ 16.928586][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 16.928704][ C2] ndisc_send_ns+0xf3/0x120 [ 16.928822][ C2] ndisc_solicit+0x314/0x480 [ 16.928939][ C2] neigh_probe+0xb3/0x100 [ 16.929056][ C2] __neigh_event_send+0x802/0x1070 [ 16.929176][ C2] neigh_resolve_output+0xbe/0x140 [ 16.929298][ C2] ip6_finish_output2+0x423/0x1300 [ 16.929416][ C2] ip6_finish_output+0x646/0xda0 [ 16.929533][ C2] ip6_output+0x23f/0x7f0 [ 16.929650][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.929794][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.929912][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.930054][ C2] dev_hard_start_xmit+0xf8/0x690 [ 16.930173][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 16.930297][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 16.930416][ C2] ip_output+0x1ca/0x660 [ 16.930533][ C2] ip_rcv+0xdc/0x3d0 [ 16.930629][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 16.930770][ C2] process_backlog+0x2bc/0x1490 [ 16.930888][ C2] __napi_poll+0xa7/0x3b0 [ 16.931005][ C2] net_rx_action+0x513/0xf50 [ 16.931123][ C2] handle_softirqs+0x1d8/0x940 [ 16.931243][ C2] do_softirq+0xa9/0xe0 [ 16.931362][ C2] __local_bh_enable_ip+0x113/0x140 [ 16.931481][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 16.931598][ C2] packet_snd+0xfad/0x1990 [ 16.931718][ C2] __sys_sendto+0x2c9/0x400 [ 16.931837][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 16.931956][ C2] do_syscall_64+0x117/0x590 [ 16.932073][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.932212][ C2] INITIAL USE at: [ 16.932288][ C2] __lock_acquire+0x378/0xc10 [ 16.932406][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.932522][ C2] _raw_write_lock_bh+0x38/0x50 [ 16.932641][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 16.932758][ C2] addrconf_notify+0x151/0xf30 [ 16.932875][ C2] notifier_call_chain+0xb0/0x320 [ 16.932992][ C2] __dev_notify_flags+0xde/0x280 [ 16.933109][ C2] netif_change_flags+0xfe/0x190 [ 16.933227][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 16.933349][ C2] rtnl_newlink+0x8d1/0xef0 [ 16.933467][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.933584][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 16.933702][ C2] netlink_unicast+0x486/0x750 [ 16.933820][ C2] netlink_sendmsg+0x735/0xc60 [ 16.933938][ C2] ____sys_sendmsg+0x419/0x850 [ 16.934056][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 16.934174][ C2] __sys_sendmsg+0x145/0x1f0 [ 16.934296][ C2] do_syscall_64+0x117/0x590 [ 16.934412][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.934552][ C2] INITIAL READ USE at: [ 16.934625][ C2] __lock_acquire+0x378/0xc10 [ 16.934743][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.934863][ C2] _raw_read_lock_bh+0x44/0x80 [ 16.934981][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 16.935121][ C2] inet6_fill_link_af+0x5c/0xe0 [ 16.935240][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 16.935383][ C2] rtnl_getlink+0x9c9/0xeb0 [ 16.935501][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 16.935618][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 16.935737][ C2] netlink_unicast+0x486/0x750 [ 16.935856][ C2] netlink_sendmsg+0x735/0xc60 [ 16.935973][ C2] ____sys_sendmsg+0x419/0x850 [ 16.936090][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 16.936207][ C2] __sys_sendmsg+0x145/0x1f0 [ 16.936325][ C2] do_syscall_64+0x117/0x590 [ 16.936443][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.936582][ C2] } [ 16.936630][ C2] ... key at: [] __key.37+0x0/0x40 [ 16.936772][ C2] ... acquired at: [ 16.936843][ C2] mark_lock+0x1d7/0xa00 [ 16.936937][ C2] mark_usage+0x42/0x170 [ 16.937032][ C2] __lock_acquire+0x378/0xc10 [ 16.937128][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.937222][ C2] _raw_read_lock_bh+0x44/0x80 [ 16.937319][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 16.937414][ C2] ndisc_send_ns+0xf3/0x120 [ 16.937508][ C2] ndisc_solicit+0x314/0x480 [ 16.937603][ C2] neigh_probe+0xb3/0x100 [ 16.937698][ C2] __neigh_event_send+0x802/0x1070 [ 16.937793][ C2] neigh_resolve_output+0xbe/0x140 [ 16.937890][ C2] ip6_finish_output2+0x423/0x1300 [ 16.937984][ C2] ip6_finish_output+0x646/0xda0 [ 16.938078][ C2] ip6_output+0x23f/0x7f0 [ 16.938172][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.938295][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.938388][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.938507][ C2] dev_hard_start_xmit+0xf8/0x690 [ 16.938602][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 16.938696][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 16.938792][ C2] ip_output+0x1ca/0x660 [ 16.938886][ C2] ip_rcv+0xdc/0x3d0 [ 16.938958][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 16.939075][ C2] process_backlog+0x2bc/0x1490 [ 16.939172][ C2] __napi_poll+0xa7/0x3b0 [ 16.939273][ C2] net_rx_action+0x513/0xf50 [ 16.939368][ C2] handle_softirqs+0x1d8/0x940 [ 16.939461][ C2] do_softirq+0xa9/0xe0 [ 16.939531][ C2] __local_bh_enable_ip+0x113/0x140 [ 16.939625][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 16.939720][ C2] packet_snd+0xfad/0x1990 [ 16.939816][ C2] __sys_sendto+0x2c9/0x400 [ 16.939912][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 16.940007][ C2] do_syscall_64+0x117/0x590 [ 16.940101][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.940216][ C2] [ 16.940268][ C2] [ 16.940268][ C2] stack backtrace: [ 16.940386][ C2] CPU: 2 UID: 0 PID: 366 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 16.940389][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.940391][ C2] Call Trace: [ 16.940392][ C2] [ 16.940393][ C2] dump_stack_lvl+0x6f/0xa0 [ 16.940398][ C2] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 16.940401][ C2] mark_lock_irq+0x989/0x9c0 [ 16.940404][ C2] mark_lock+0x1d7/0xa00 [ 16.940405][ C2] mark_usage+0x42/0x170 [ 16.940407][ C2] __lock_acquire+0x378/0xc10 [ 16.940408][ C2] ? __lock_acquire+0x508/0xc10 [ 16.940410][ C2] lock_acquire.part.0+0xbc/0x260 [ 16.940412][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 16.940414][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940417][ C2] ? lock_acquire+0x134/0x160 [ 16.940419][ C2] _raw_read_lock_bh+0x44/0x80 [ 16.940420][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 16.940422][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 16.940424][ C2] ndisc_send_ns+0xf3/0x120 [ 16.940425][ C2] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 16.940428][ C2] ? ndisc_parse_options+0x30/0x30 [ 16.940429][ C2] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 16.940431][ C2] ndisc_solicit+0x314/0x480 [ 16.940433][ C2] ? ndisc_send_ns+0x120/0x120 [ 16.940434][ C2] ? neigh_probe+0x62/0x100 [ 16.940436][ C2] neigh_probe+0xb3/0x100 [ 16.940438][ C2] __neigh_event_send+0x802/0x1070 [ 16.940440][ C2] ? warn_bogus_irq_restore+0x1/0x20 [ 16.940442][ C2] ? ___neigh_create+0x811/0x1070 [ 16.940445][ C2] neigh_resolve_output+0xbe/0x140 [ 16.940447][ C2] ip6_finish_output2+0x423/0x1300 [ 16.940449][ C2] ? ip6_xmit+0x2000/0x2000 [ 16.940451][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 16.940452][ C2] ? find_held_lock+0x2b/0x80 [ 16.940455][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 16.940456][ C2] ? ip6_mtu+0x15d/0x310 [ 16.940459][ C2] ip6_finish_output+0x646/0xda0 [ 16.940461][ C2] ip6_output+0x23f/0x7f0 [ 16.940462][ C2] ? ip6_finish_output+0xda0/0xda0 [ 16.940464][ C2] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 16.940467][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 16.940470][ C2] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 16.940472][ C2] ? pskb_expand_head+0x4ac/0xf50 [ 16.940475][ C2] ? __lock_acquire+0x508/0xc10 [ 16.940477][ C2] ? __pskb_copy_fclone+0x1080/0x1080 [ 16.940479][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 16.940481][ C2] ? __ipv6_chk_addr_and_flags+0x230/0x5f0 [ 16.940483][ C2] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 16.940485][ C2] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 16.940487][ C2] ? __asan_memcpy+0x3c/0x60 [ 16.940491][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 16.940493][ C2] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 16.940495][ C2] ? sock_def_readable+0x156/0x490 [ 16.940497][ C2] ? find_held_lock+0x2b/0x80 [ 16.940500][ C2] ? dev_queue_xmit_nit+0x642/0x9e0 [ 16.940502][ C2] dev_hard_start_xmit+0xf8/0x690 [ 16.940504][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 16.940506][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940508][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 16.940510][ C2] ? __lock_acquire+0x508/0xc10 [ 16.940512][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 16.940514][ C2] ? find_held_lock+0x2b/0x80 [ 16.940516][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 16.940518][ C2] ? ___neigh_create+0x811/0x1070 [ 16.940520][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 16.940522][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 16.940524][ C2] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 16.940527][ C2] ? ip4_dst_hoplimit+0x320/0x320 [ 16.940529][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940531][ C2] ip_output+0x1ca/0x660 [ 16.940532][ C2] ? ip_finish_output+0x460/0x460 [ 16.940533][ C2] ? ip4_frag_init+0x720/0x720 [ 16.940536][ C2] ? ip_forward+0xfa7/0x1570 [ 16.940538][ C2] ? process_backlog+0x561/0x1490 [ 16.940539][ C2] ip_rcv+0xdc/0x3d0 [ 16.940541][ C2] ? ip_local_deliver+0x4c0/0x4c0 [ 16.940543][ C2] ? mark_usage+0x61/0x170 [ 16.940544][ C2] ? __lock_acquire+0x508/0xc10 [ 16.940546][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 16.940547][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 16.940549][ C2] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 16.940551][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940553][ C2] process_backlog+0x2bc/0x1490 [ 16.940555][ C2] __napi_poll+0xa7/0x3b0 [ 16.940556][ C2] net_rx_action+0x513/0xf50 [ 16.940558][ C2] ? __napi_poll+0x3b0/0x3b0 [ 16.940560][ C2] ? find_held_lock+0x2b/0x80 [ 16.940563][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940565][ C2] handle_softirqs+0x1d8/0x940 [ 16.940567][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940569][ C2] ? _local_bh_enable+0xd0/0xd0 [ 16.940570][ C2] ? trace_csd_function_exit+0xb3/0x1a0 [ 16.940573][ C2] ? rcu_is_watching+0x15/0xd0 [ 16.940574][ C2] do_softirq+0xa9/0xe0 [ 16.940576][ C2] [ 16.940576][ C2] [ 16.940577][ C2] ? __dev_queue_xmit+0x946/0x1b60 [ 16.940579][ C2] __local_bh_enable_ip+0x113/0x140 [ 16.940580][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 16.940582][ C2] ? _copy_from_iter+0x1bb/0x1810 [ 16.940587][ C2] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 16.940588][ C2] ? net_dim+0x730/0xd70 [ 16.940590][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 16.940594][ C2] ? packet_release+0xc70/0xc70 [ 16.940596][ C2] packet_snd+0xfad/0x1990 [ 16.940599][ C2] ? tpacket_snd+0x19e0/0x19e0 [ 16.940600][ C2] ? __might_fault+0x97/0x140 [ 16.940604][ C2] ? __might_fault+0x97/0x140 [ 16.940605][ C2] ? __might_fault+0x97/0x140 [ 16.940606][ C2] __sys_sendto+0x2c9/0x400 [ 16.940608][ C2] ? __ia32_sys_getpeername+0xd0/0xd0 [ 16.940611][ C2] ? sock_ioctl+0x3cb/0x5f0 [ 16.940614][ C2] ? do_user_addr_fault+0x325/0xe30 [ 16.940617][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 16.940619][ C2] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 16.940622][ C2] ? lockdep_hardirqs_on+0x8c/0x130 [ 16.940624][ C2] ? do_syscall_64+0x82/0x590 [ 16.940625][ C2] do_syscall_64+0x117/0x590 [ 16.940626][ C2] ? trace_hardirqs_off+0xd/0x30 [ 16.940628][ C2] ? exc_page_fault+0xee/0x100 [ 16.940630][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.940631][ C2] RIP: 0033:0x7f06f534008e [ 16.940634][ 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 [ 16.940636][ C2] RSP: 002b:00007ffd43583630 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 16.940638][ C2] RAX: ffffffffffffffda RBX: 000056301a1f6b22 RCX: 00007f06f534008e [ 16.940639][ C2] RDX: 0000000000000062 RSI: 000056301a1f6b22 RDI: 0000000000000005 [ 16.940640][ C2] RBP: 00007ffd43583640 R08: 00007ffd43583690 R09: 0000000000000014 [ 16.940641][ C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000056301a1f6830 [ 16.940642][ C2] R13: 0000000000000062 R14: 0000000000000005 R15: 000056301a1f6830 [ 16.940644][ C2]