[ 8.799268][ T187] ip (187) used greatest stack depth: 23832 bytes left [ 10.568978][ T264] 8021q: 802.1Q VLAN Support v1.8 [ 10.680945][ T269] gre: GRE over IPv4 demultiplexer driver [ 10.710895][ T269] ip6_gre: GRE over IPv6 tunneling driver [ 17.259213][ T356] GACT probability NOT on [ 17.405743][ C2] [ 17.405869][ C2] ======================================================== [ 17.406097][ C2] WARNING: possible irq lock inversion dependency detected [ 17.406311][ C2] 7.1.0-rc5-virtme #1 Not tainted [ 17.406474][ C2] -------------------------------------------------------- [ 17.406693][ C2] mausezahn/359 just changed the state of lock: [ 17.406878][ C2] ff1100000c17a578 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 17.407146][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 17.407361][ C2] (acaddr_hash_lock){+.+.}-{3:3} [ 17.407365][ C2] [ 17.407365][ C2] [ 17.407365][ C2] and interrupts could create inverse lock ordering between them. [ 17.407365][ C2] [ 17.407908][ C2] [ 17.407908][ C2] other info that might help us debug this: [ 17.408128][ C2] Possible interrupt unsafe locking scenario: [ 17.408128][ C2] [ 17.408347][ C2] CPU0 CPU1 [ 17.408498][ C2] ---- ---- [ 17.408644][ C2] lock(acaddr_hash_lock); [ 17.408792][ C2] local_irq_disable(); [ 17.408972][ C2] lock(&ndev->lock); [ 17.409157][ C2] lock(acaddr_hash_lock); [ 17.409341][ C2] [ 17.409457][ C2] lock(&ndev->lock); [ 17.409569][ C2] [ 17.409569][ C2] *** DEADLOCK *** [ 17.409569][ C2] [ 17.409781][ C2] 6 locks held by mausezahn/359: [ 17.409930][ C2] #0: ffffffff91177d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 17.410192][ C2] #1: ffffffff91177d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 17.410454][ C2] #2: ffffffff91177d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 17.410709][ C2] #3: ffffffff91177cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 17.410966][ C2] #4: ffffffff91177d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 17.411225][ C2] #5: ffffffff91177d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 17.411487][ C2] [ 17.411487][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 17.411744][ C2] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 17.411899][ C2] HARDIRQ-ON-W at: [ 17.412012][ C2] __lock_acquire+0x378/0xc10 [ 17.412202][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.412385][ C2] _raw_spin_lock+0x33/0x40 [ 17.412575][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.412794][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.412978][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.413160][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.413342][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.413566][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.413752][ C2] addrconf_dad_work+0x170/0x930 [ 17.413938][ C2] process_one_work+0xdf8/0x1410 [ 17.414124][ C2] worker_thread+0x4f1/0xd60 [ 17.414305][ C2] kthread+0x367/0x460 [ 17.414493][ C2] ret_from_fork+0x474/0x6b0 [ 17.414679][ C2] ret_from_fork_asm+0x11/0x20 [ 17.414868][ C2] SOFTIRQ-ON-W at: [ 17.414979][ C2] __lock_acquire+0x378/0xc10 [ 17.415162][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.415343][ C2] _raw_spin_lock+0x33/0x40 [ 17.415534][ C2] __ipv6_dev_ac_dec+0x236/0x5d0 [ 17.415718][ C2] addrconf_leave_anycast+0x1bc/0x260 [ 17.415940][ C2] __ipv6_ifa_notify+0x6b4/0xad0 [ 17.416124][ C2] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 17.416343][ C2] addrconf_notify+0x339/0xf30 [ 17.416531][ C2] notifier_call_chain+0xb0/0x320 [ 17.416714][ C2] __netdev_upper_dev_link+0x3a5/0x590 [ 17.416941][ C2] netdev_master_upper_dev_link+0x86/0xb0 [ 17.417161][ C2] vrf_add_slave+0xdd/0x210 [vrf] [ 17.417346][ C2] do_set_master+0x357/0x580 [ 17.417540][ C2] do_setlink.isra.0+0xa31/0x2750 [ 17.417721][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.417905][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.418089][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.418272][ C2] netlink_unicast+0x486/0x750 [ 17.418460][ C2] netlink_sendmsg+0x735/0xc60 [ 17.418644][ C2] ____sys_sendmsg+0x419/0x850 [ 17.418831][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.419015][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.419199][ C2] do_syscall_64+0x117/0x590 [ 17.419386][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.419615][ C2] INITIAL USE at: [ 17.419727][ C2] __lock_acquire+0x378/0xc10 [ 17.419915][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.420101][ C2] _raw_spin_lock+0x33/0x40 [ 17.420289][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.420512][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.420694][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.420878][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.421065][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.421249][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.421431][ C2] addrconf_dad_work+0x170/0x930 [ 17.421620][ C2] process_one_work+0xdf8/0x1410 [ 17.421805][ C2] worker_thread+0x4f1/0xd60 [ 17.421991][ C2] kthread+0x367/0x460 [ 17.422171][ C2] ret_from_fork+0x474/0x6b0 [ 17.422356][ C2] ret_from_fork_asm+0x11/0x20 [ 17.422544][ C2] } [ 17.422620][ C2] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 17.422839][ C2] ... acquired at: [ 17.422951][ C2] __lock_acquire+0x508/0xc10 [ 17.423099][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.423243][ C2] _raw_spin_lock+0x33/0x40 [ 17.423388][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 17.423574][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 17.423717][ C2] addrconf_join_anycast+0x1bc/0x260 [ 17.423862][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 17.424010][ C2] addrconf_dad_completed+0x14b/0xe10 [ 17.424153][ C2] addrconf_dad_begin+0x2e1/0x540 [ 17.424299][ C2] addrconf_dad_work+0x170/0x930 [ 17.424447][ C2] process_one_work+0xdf8/0x1410 [ 17.424591][ C2] worker_thread+0x4f1/0xd60 [ 17.424735][ C2] kthread+0x367/0x460 [ 17.424848][ C2] ret_from_fork+0x474/0x6b0 [ 17.424991][ C2] ret_from_fork_asm+0x11/0x20 [ 17.425132][ C2] [ 17.425203][ C2] -> (&ndev->lock){++.-}-{3:3} { [ 17.425353][ C2] HARDIRQ-ON-W at: [ 17.425467][ C2] __lock_acquire+0x378/0xc10 [ 17.425651][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.425832][ C2] _raw_write_lock_bh+0x38/0x50 [ 17.426015][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 17.426197][ C2] addrconf_notify+0x151/0xf30 [ 17.426382][ C2] notifier_call_chain+0xb0/0x320 [ 17.426571][ C2] __dev_notify_flags+0xde/0x280 [ 17.426753][ C2] netif_change_flags+0xfe/0x190 [ 17.426937][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 17.427120][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.427307][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.427493][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.427677][ C2] netlink_unicast+0x486/0x750 [ 17.427859][ C2] netlink_sendmsg+0x735/0xc60 [ 17.428041][ C2] ____sys_sendmsg+0x419/0x850 [ 17.428223][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.428403][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.428589][ C2] do_syscall_64+0x117/0x590 [ 17.428771][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.428990][ C2] HARDIRQ-ON-R at: [ 17.429102][ C2] __lock_acquire+0x378/0xc10 [ 17.429283][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.429470][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.429652][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.429874][ C2] inet6_fill_link_af+0x5c/0xe0 [ 17.430059][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.430277][ C2] rtnl_getlink+0x9c9/0xeb0 [ 17.430463][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.430646][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.430828][ C2] netlink_unicast+0x486/0x750 [ 17.431010][ C2] netlink_sendmsg+0x735/0xc60 [ 17.431193][ C2] ____sys_sendmsg+0x419/0x850 [ 17.431375][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.431561][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.431744][ C2] do_syscall_64+0x117/0x590 [ 17.431928][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.432145][ C2] IN-SOFTIRQ-R at: [ 17.432257][ C2] __lock_acquire+0x378/0xc10 [ 17.432442][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.432629][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.432810][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.432991][ C2] ndisc_send_ns+0xf3/0x120 [ 17.433173][ C2] ndisc_solicit+0x314/0x480 [ 17.433354][ C2] neigh_probe+0xb3/0x100 [ 17.433539][ C2] __neigh_event_send+0x802/0x1070 [ 17.433721][ C2] neigh_resolve_output+0xbe/0x140 [ 17.433902][ C2] ip6_finish_output2+0x423/0x1300 [ 17.434082][ C2] ip6_finish_output+0x646/0xda0 [ 17.434261][ C2] ip6_output+0x23f/0x7f0 [ 17.434450][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.434667][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.434848][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.435065][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.435248][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.435430][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.435617][ C2] ip_output+0x1ca/0x660 [ 17.435798][ C2] ip_rcv+0xdc/0x3d0 [ 17.435945][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.436163][ C2] process_backlog+0x2bc/0x1490 [ 17.436348][ C2] __napi_poll+0xa7/0x3b0 [ 17.436534][ C2] net_rx_action+0x513/0xf50 [ 17.436713][ C2] handle_softirqs+0x1d8/0x940 [ 17.436894][ C2] do_softirq+0xa9/0xe0 [ 17.437074][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.437254][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.437439][ C2] packet_snd+0xfad/0x1990 [ 17.437635][ C2] __sys_sendto+0x2c9/0x400 [ 17.437816][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.437999][ C2] do_syscall_64+0x117/0x590 [ 17.438179][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.438396][ C2] INITIAL USE at: [ 17.438514][ C2] __lock_acquire+0x378/0xc10 [ 17.438698][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.438871][ C2] _raw_write_lock_bh+0x38/0x50 [ 17.439052][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 17.439233][ C2] addrconf_notify+0x151/0xf30 [ 17.439416][ C2] notifier_call_chain+0xb0/0x320 [ 17.439612][ C2] __dev_notify_flags+0xde/0x280 [ 17.439794][ C2] netif_change_flags+0xfe/0x190 [ 17.439976][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 17.440155][ C2] rtnl_newlink+0x8d1/0xef0 [ 17.440338][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.440525][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.440705][ C2] netlink_unicast+0x486/0x750 [ 17.440887][ C2] netlink_sendmsg+0x735/0xc60 [ 17.441068][ C2] ____sys_sendmsg+0x419/0x850 [ 17.441250][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.441431][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.441619][ C2] do_syscall_64+0x117/0x590 [ 17.441799][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.442015][ C2] INITIAL READ USE at: [ 17.442124][ C2] __lock_acquire+0x378/0xc10 [ 17.442304][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.442491][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.442676][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 17.442896][ C2] inet6_fill_link_af+0x5c/0xe0 [ 17.443076][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 17.443293][ C2] rtnl_getlink+0x9c9/0xeb0 [ 17.443477][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 17.443658][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 17.443836][ C2] netlink_unicast+0x486/0x750 [ 17.444019][ C2] netlink_sendmsg+0x735/0xc60 [ 17.444198][ C2] ____sys_sendmsg+0x419/0x850 [ 17.444379][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 17.444567][ C2] __sys_sendmsg+0x145/0x1f0 [ 17.444745][ C2] do_syscall_64+0x117/0x590 [ 17.444925][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.445142][ C2] } [ 17.445216][ C2] ... key at: [] __key.37+0x0/0x40 [ 17.445440][ C2] ... acquired at: [ 17.445549][ C2] mark_lock+0x1d7/0xa00 [ 17.445696][ C2] mark_usage+0x42/0x170 [ 17.445840][ C2] __lock_acquire+0x378/0xc10 [ 17.445983][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.446126][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.446270][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.446412][ C2] ndisc_send_ns+0xf3/0x120 [ 17.446564][ C2] ndisc_solicit+0x314/0x480 [ 17.446709][ C2] neigh_probe+0xb3/0x100 [ 17.446855][ C2] __neigh_event_send+0x802/0x1070 [ 17.446999][ C2] neigh_resolve_output+0xbe/0x140 [ 17.447142][ C2] ip6_finish_output2+0x423/0x1300 [ 17.447283][ C2] ip6_finish_output+0x646/0xda0 [ 17.447426][ C2] ip6_output+0x23f/0x7f0 [ 17.447579][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.447759][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.447903][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.448081][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.448226][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.448369][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.448522][ C2] ip_output+0x1ca/0x660 [ 17.448665][ C2] ip_rcv+0xdc/0x3d0 [ 17.448772][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.448950][ C2] process_backlog+0x2bc/0x1490 [ 17.449094][ C2] __napi_poll+0xa7/0x3b0 [ 17.449237][ C2] net_rx_action+0x513/0xf50 [ 17.449379][ C2] handle_softirqs+0x1d8/0x940 [ 17.449524][ C2] do_softirq+0xa9/0xe0 [ 17.449632][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.449774][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.449918][ C2] packet_snd+0xfad/0x1990 [ 17.450062][ C2] __sys_sendto+0x2c9/0x400 [ 17.450205][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.450347][ C2] do_syscall_64+0x117/0x590 [ 17.450493][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.450673][ C2] [ 17.450748][ C2] [ 17.450748][ C2] stack backtrace: [ 17.450926][ C2] CPU: 2 UID: 0 PID: 359 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 17.450931][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.450933][ C2] Call Trace: [ 17.450935][ C2] [ 17.450937][ C2] dump_stack_lvl+0x6f/0xa0 [ 17.450942][ C2] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 17.450946][ C2] mark_lock_irq+0x989/0x9c0 [ 17.450951][ C2] mark_lock+0x1d7/0xa00 [ 17.450954][ C2] mark_usage+0x42/0x170 [ 17.450956][ C2] __lock_acquire+0x378/0xc10 [ 17.450958][ C2] ? __lock_acquire+0x508/0xc10 [ 17.450961][ C2] lock_acquire.part.0+0xbc/0x260 [ 17.450964][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.450967][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.450971][ C2] ? lock_acquire+0x134/0x160 [ 17.450973][ C2] _raw_read_lock_bh+0x44/0x80 [ 17.450976][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 17.450978][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 17.450982][ C2] ndisc_send_ns+0xf3/0x120 [ 17.450984][ C2] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 17.450987][ C2] ? ndisc_parse_options+0x30/0x30 [ 17.450989][ C2] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 17.450993][ C2] ndisc_solicit+0x314/0x480 [ 17.450995][ C2] ? ndisc_send_ns+0x120/0x120 [ 17.450998][ C2] ? neigh_probe+0x62/0x100 [ 17.451001][ C2] neigh_probe+0xb3/0x100 [ 17.451004][ C2] __neigh_event_send+0x802/0x1070 [ 17.451007][ C2] ? warn_bogus_irq_restore+0x1/0x20 [ 17.451010][ C2] ? ___neigh_create+0x811/0x1070 [ 17.451014][ C2] neigh_resolve_output+0xbe/0x140 [ 17.451017][ C2] ip6_finish_output2+0x423/0x1300 [ 17.451020][ C2] ? ip6_xmit+0x2000/0x2000 [ 17.451022][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 17.451024][ C2] ? find_held_lock+0x2b/0x80 [ 17.451028][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.451030][ C2] ? ip6_mtu+0x15d/0x310 [ 17.451034][ C2] ip6_finish_output+0x646/0xda0 [ 17.451037][ C2] ip6_output+0x23f/0x7f0 [ 17.451040][ C2] ? ip6_finish_output+0xda0/0xda0 [ 17.451043][ C2] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 17.451048][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 17.451054][ C2] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 17.451057][ C2] ? pskb_expand_head+0x4ac/0xf50 [ 17.451060][ C2] ? __lock_acquire+0x508/0xc10 [ 17.451064][ C2] ? __pskb_copy_fclone+0x1080/0x1080 [ 17.451067][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 17.451072][ C2] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 17.451075][ C2] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 17.451078][ C2] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 17.451081][ C2] ? __asan_memcpy+0x3c/0x60 [ 17.451087][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 17.451091][ C2] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 17.451093][ C2] ? sock_def_readable+0x156/0x490 [ 17.451096][ C2] ? find_held_lock+0x2b/0x80 [ 17.451100][ C2] ? dev_queue_xmit_nit+0x642/0x9e0 [ 17.451104][ C2] dev_hard_start_xmit+0xf8/0x690 [ 17.451107][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.451110][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451113][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 17.451116][ C2] ? __lock_acquire+0x508/0xc10 [ 17.451120][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.451122][ C2] ? find_held_lock+0x2b/0x80 [ 17.451125][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 17.451129][ C2] ? ___neigh_create+0x811/0x1070 [ 17.451131][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 17.451135][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 17.451138][ C2] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 17.451141][ C2] ? ip4_dst_hoplimit+0x320/0x320 [ 17.451144][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451147][ C2] ip_output+0x1ca/0x660 [ 17.451150][ C2] ? ip_finish_output+0x460/0x460 [ 17.451152][ C2] ? ip4_frag_init+0x720/0x720 [ 17.451155][ C2] ? ip_forward+0xfa7/0x1570 [ 17.451159][ C2] ? process_backlog+0x561/0x1490 [ 17.451161][ C2] ip_rcv+0xdc/0x3d0 [ 17.451164][ C2] ? ip_local_deliver+0x4c0/0x4c0 [ 17.451167][ C2] ? mark_usage+0x61/0x170 [ 17.451169][ C2] ? __lock_acquire+0x508/0xc10 [ 17.451172][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 17.451174][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 17.451176][ C2] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 17.451179][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451183][ C2] process_backlog+0x2bc/0x1490 [ 17.451186][ C2] __napi_poll+0xa7/0x3b0 [ 17.451189][ C2] net_rx_action+0x513/0xf50 [ 17.451192][ C2] ? __napi_poll+0x3b0/0x3b0 [ 17.451194][ C2] ? find_held_lock+0x2b/0x80 [ 17.451200][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451202][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451205][ C2] handle_softirqs+0x1d8/0x940 [ 17.451208][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451211][ C2] ? _local_bh_enable+0xd0/0xd0 [ 17.451213][ C2] ? trace_csd_function_exit+0xb3/0x1a0 [ 17.451216][ C2] ? rcu_is_watching+0x15/0xd0 [ 17.451219][ C2] do_softirq+0xa9/0xe0 [ 17.451221][ C2] [ 17.451222][ C2] [ 17.451223][ C2] ? __dev_queue_xmit+0x946/0x1b60 [ 17.451226][ C2] __local_bh_enable_ip+0x113/0x140 [ 17.451228][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 17.451231][ C2] ? _copy_from_iter+0x1bb/0x1810 [ 17.451236][ C2] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 17.451239][ C2] ? net_dim+0x730/0xd70 [ 17.451241][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 17.451246][ C2] ? packet_release+0xc70/0xc70 [ 17.451250][ C2] packet_snd+0xfad/0x1990 [ 17.451255][ C2] ? tpacket_snd+0x19e0/0x19e0 [ 17.451257][ C2] ? __might_fault+0x97/0x140 [ 17.451261][ C2] ? __might_fault+0x97/0x140 [ 17.451263][ C2] ? __might_fault+0x97/0x140 [ 17.451266][ C2] __sys_sendto+0x2c9/0x400 [ 17.451269][ C2] ? __ia32_sys_getpeername+0xd0/0xd0 [ 17.451274][ C2] ? sock_ioctl+0x3cb/0x5f0 [ 17.451278][ C2] ? do_user_addr_fault+0x325/0xe30 [ 17.451283][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 17.451286][ C2] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 17.451290][ C2] ? lockdep_hardirqs_on+0x8c/0x130 [ 17.451292][ C2] ? do_syscall_64+0x82/0x590 [ 17.451294][ C2] do_syscall_64+0x117/0x590 [ 17.451296][ C2] ? trace_hardirqs_off+0xd/0x30 [ 17.451298][ C2] ? exc_page_fault+0xee/0x100 [ 17.451301][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.451304][ C2] RIP: 0033:0x7fdbb685608e [ 17.451308][ 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 [ 17.451311][ C2] RSP: 002b:00007ffc86cbd230 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 17.451314][ C2] RAX: ffffffffffffffda RBX: 000055ed342cbb22 RCX: 00007fdbb685608e [ 17.451316][ C2] RDX: 0000000000000062 RSI: 000055ed342cbb22 RDI: 0000000000000005 [ 17.451318][ C2] RBP: 00007ffc86cbd240 R08: 00007ffc86cbd290 R09: 0000000000000014 [ 17.451319][ C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000055ed342cb830 [ 17.451321][ C2] R13: 0000000000000062 R14: 0000000000000005 R15: 000055ed342cb830 [ 17.451325][ C2]