[ 9.371325][ T186] ip (186) used greatest stack depth: 24320 bytes left [ 9.756624][ T209] ip (209) used greatest stack depth: 24192 bytes left [ 11.291864][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 11.410309][ T282] gre: GRE over IPv4 demultiplexer driver [ 11.437522][ T282] ip6_gre: GRE over IPv6 tunneling driver [ 17.897985][ T368] GACT probability NOT on [ 17.998853][ C2] [ 17.998931][ C2] ======================================================== [ 17.999081][ C2] WARNING: possible irq lock inversion dependency detected [ 17.999221][ C2] 7.1.0-rc5-virtme #1 Not tainted [ 17.999316][ C2] -------------------------------------------------------- [ 17.999462][ C2] mausezahn/373 just changed the state of lock: [ 17.999584][ C2] ff1100000d41d578 (&ndev->lock){++.-}-{3:3}, at: ipv6_get_lladdr+0xa8/0x3f0 [ 17.999763][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 17.999910][ C2] (acaddr_hash_lock){+.+.}-{3:3} [ 17.999912][ C2] [ 17.999912][ C2] [ 17.999912][ C2] and interrupts could create inverse lock ordering between them. [ 17.999912][ C2] [ 18.000254][ C2] [ 18.000254][ C2] other info that might help us debug this: [ 18.000396][ C2] Possible interrupt unsafe locking scenario: [ 18.000396][ C2] [ 18.000538][ C2] CPU0 CPU1 [ 18.000632][ C2] ---- ---- [ 18.000726][ C2] lock(acaddr_hash_lock); [ 18.000828][ C2] local_irq_disable(); [ 18.000945][ C2] lock(&ndev->lock); [ 18.001064][ C2] lock(acaddr_hash_lock); [ 18.001180][ C2] [ 18.001252][ C2] lock(&ndev->lock); [ 18.001325][ C2] [ 18.001325][ C2] *** DEADLOCK *** [ 18.001325][ C2] [ 18.001466][ C2] 6 locks held by mausezahn/373: [ 18.001564][ C2] #0: ffffffff8d577d20 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x561/0x1490 [ 18.001736][ C2] #1: ffffffff8d577d20 (rcu_read_lock){....}-{1:3}, at: ip_output+0xa9/0x660 [ 18.001908][ C2] #2: ffffffff8d577d20 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x25c/0x1bc0 [ 18.002075][ C2] #3: ffffffff8d577cc0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1fe/0x1b60 [ 18.002242][ C2] #4: ffffffff8d577d20 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x11d/0x7f0 [ 18.002408][ C2] #5: ffffffff8d577d20 (rcu_read_lock){....}-{1:3}, at: ipv6_get_lladdr+0x36/0x3f0 [ 18.002578][ C2] [ 18.002578][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 18.002741][ C2] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 18.002846][ C2] HARDIRQ-ON-W at: [ 18.002921][ C2] __lock_acquire+0x378/0xc10 [ 18.003044][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.003161][ C2] _raw_spin_lock+0x33/0x40 [ 18.003280][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.003424][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.003546][ C2] addrconf_join_anycast+0x1bc/0x260 [ 18.003667][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 18.003785][ C2] addrconf_dad_completed+0x14b/0xe10 [ 18.003933][ C2] addrconf_dad_begin+0x2e1/0x540 [ 18.004051][ C2] addrconf_dad_work+0x170/0x930 [ 18.004170][ C2] process_one_work+0xdf8/0x1410 [ 18.004291][ C2] worker_thread+0x4f1/0xd60 [ 18.004409][ C2] kthread+0x367/0x460 [ 18.004531][ C2] ret_from_fork+0x474/0x6b0 [ 18.004651][ C2] ret_from_fork_asm+0x11/0x20 [ 18.004771][ C2] SOFTIRQ-ON-W at: [ 18.004848][ C2] __lock_acquire+0x378/0xc10 [ 18.004968][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.005087][ C2] _raw_spin_lock+0x33/0x40 [ 18.005205][ C2] __ipv6_dev_ac_dec+0x236/0x5d0 [ 18.005324][ C2] addrconf_leave_anycast+0x1bc/0x260 [ 18.005468][ C2] __ipv6_ifa_notify+0x6b4/0xad0 [ 18.005590][ C2] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 18.005732][ C2] addrconf_notify+0x339/0xf30 [ 18.005858][ C2] notifier_call_chain+0xb0/0x320 [ 18.005977][ C2] __netdev_upper_dev_link+0x3a5/0x590 [ 18.006120][ C2] netdev_master_upper_dev_link+0x86/0xb0 [ 18.006264][ C2] vrf_add_slave+0xdd/0x210 [vrf] [ 18.006385][ C2] do_set_master+0x357/0x580 [ 18.006507][ C2] do_setlink.isra.0+0xa31/0x2750 [ 18.006625][ C2] rtnl_newlink+0x8d1/0xef0 [ 18.006742][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.006867][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 18.006987][ C2] netlink_unicast+0x486/0x750 [ 18.007107][ C2] netlink_sendmsg+0x735/0xc60 [ 18.007226][ C2] ____sys_sendmsg+0x419/0x850 [ 18.007346][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 18.007468][ C2] __sys_sendmsg+0x145/0x1f0 [ 18.007589][ C2] do_syscall_64+0x117/0x590 [ 18.007708][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.007854][ C2] INITIAL USE at: [ 18.007926][ C2] __lock_acquire+0x378/0xc10 [ 18.008043][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.008163][ C2] _raw_spin_lock+0x33/0x40 [ 18.008281][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.008422][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.008543][ C2] addrconf_join_anycast+0x1bc/0x260 [ 18.008662][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 18.008782][ C2] addrconf_dad_completed+0x14b/0xe10 [ 18.008906][ C2] addrconf_dad_begin+0x2e1/0x540 [ 18.009024][ C2] addrconf_dad_work+0x170/0x930 [ 18.009143][ C2] process_one_work+0xdf8/0x1410 [ 18.009260][ C2] worker_thread+0x4f1/0xd60 [ 18.009380][ C2] kthread+0x367/0x460 [ 18.009502][ C2] ret_from_fork+0x474/0x6b0 [ 18.009622][ C2] ret_from_fork_asm+0x11/0x20 [ 18.009741][ C2] } [ 18.009791][ C2] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 18.009947][ C2] ... acquired at: [ 18.010018][ C2] __lock_acquire+0x508/0xc10 [ 18.010115][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.010211][ C2] _raw_spin_lock+0x33/0x40 [ 18.010306][ C2] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 18.010423][ C2] __ipv6_dev_ac_inc+0x57e/0x930 [ 18.010521][ C2] addrconf_join_anycast+0x1bc/0x260 [ 18.010615][ C2] __ipv6_ifa_notify+0x75b/0xad0 [ 18.010709][ C2] addrconf_dad_completed+0x14b/0xe10 [ 18.010805][ C2] addrconf_dad_begin+0x2e1/0x540 [ 18.010903][ C2] addrconf_dad_work+0x170/0x930 [ 18.010996][ C2] process_one_work+0xdf8/0x1410 [ 18.011090][ C2] worker_thread+0x4f1/0xd60 [ 18.011184][ C2] kthread+0x367/0x460 [ 18.011256][ C2] ret_from_fork+0x474/0x6b0 [ 18.011350][ C2] ret_from_fork_asm+0x11/0x20 [ 18.011446][ C2] [ 18.011498][ C2] -> (&ndev->lock){++.-}-{3:3} { [ 18.011595][ C2] HARDIRQ-ON-W at: [ 18.011667][ C2] __lock_acquire+0x378/0xc10 [ 18.011786][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.011910][ C2] _raw_write_lock_bh+0x38/0x50 [ 18.012029][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 18.012149][ C2] addrconf_notify+0x151/0xf30 [ 18.012268][ C2] notifier_call_chain+0xb0/0x320 [ 18.012385][ C2] __dev_notify_flags+0xde/0x280 [ 18.012507][ C2] netif_change_flags+0xfe/0x190 [ 18.012625][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 18.012743][ C2] rtnl_newlink+0x8d1/0xef0 [ 18.012868][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.012987][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 18.013107][ C2] netlink_unicast+0x486/0x750 [ 18.013225][ C2] netlink_sendmsg+0x735/0xc60 [ 18.013344][ C2] ____sys_sendmsg+0x419/0x850 [ 18.013466][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 18.013587][ C2] __sys_sendmsg+0x145/0x1f0 [ 18.013705][ C2] do_syscall_64+0x117/0x590 [ 18.013828][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.013971][ C2] HARDIRQ-ON-R at: [ 18.014043][ C2] __lock_acquire+0x378/0xc10 [ 18.014162][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.014281][ C2] _raw_read_lock_bh+0x44/0x80 [ 18.014401][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 18.014546][ C2] inet6_fill_link_af+0x5c/0xe0 [ 18.014666][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 18.014810][ C2] rtnl_getlink+0x9c9/0xeb0 [ 18.014934][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.015054][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 18.015173][ C2] netlink_unicast+0x486/0x750 [ 18.015291][ C2] netlink_sendmsg+0x735/0xc60 [ 18.015409][ C2] ____sys_sendmsg+0x419/0x850 [ 18.015531][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 18.015650][ C2] __sys_sendmsg+0x145/0x1f0 [ 18.015768][ C2] do_syscall_64+0x117/0x590 [ 18.015891][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.016031][ C2] IN-SOFTIRQ-R at: [ 18.016102][ C2] __lock_acquire+0x378/0xc10 [ 18.016220][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.016337][ C2] _raw_read_lock_bh+0x44/0x80 [ 18.016457][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 18.016577][ C2] ndisc_send_ns+0xf3/0x120 [ 18.016696][ C2] ndisc_solicit+0x314/0x480 [ 18.016813][ C2] neigh_probe+0xb3/0x100 [ 18.016940][ C2] __neigh_event_send+0x802/0x1070 [ 18.017060][ C2] neigh_resolve_output+0xbe/0x140 [ 18.017181][ C2] ip6_finish_output2+0x423/0x1300 [ 18.017299][ C2] ip6_finish_output+0x646/0xda0 [ 18.017418][ C2] ip6_output+0x23f/0x7f0 [ 18.017539][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.017682][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.017801][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.017947][ C2] dev_hard_start_xmit+0xf8/0x690 [ 18.018066][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 18.018185][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 18.018307][ C2] ip_output+0x1ca/0x660 [ 18.018425][ C2] ip_rcv+0xdc/0x3d0 [ 18.018525][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 18.018666][ C2] process_backlog+0x2bc/0x1490 [ 18.018785][ C2] __napi_poll+0xa7/0x3b0 [ 18.018908][ C2] net_rx_action+0x513/0xf50 [ 18.019027][ C2] handle_softirqs+0x1d8/0x940 [ 18.019147][ C2] do_softirq+0xa9/0xe0 [ 18.019264][ C2] __local_bh_enable_ip+0x113/0x140 [ 18.019383][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 18.019505][ C2] packet_snd+0xfad/0x1990 [ 18.019626][ C2] __sys_sendto+0x2c9/0x400 [ 18.019746][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 18.019870][ C2] do_syscall_64+0x117/0x590 [ 18.019989][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.020132][ C2] INITIAL USE at: [ 18.020204][ C2] __lock_acquire+0x378/0xc10 [ 18.020325][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.020444][ C2] _raw_write_lock_bh+0x38/0x50 [ 18.020567][ C2] addrconf_permanent_addr+0x108/0x9c0 [ 18.020687][ C2] addrconf_notify+0x151/0xf30 [ 18.020807][ C2] notifier_call_chain+0xb0/0x320 [ 18.020931][ C2] __dev_notify_flags+0xde/0x280 [ 18.021050][ C2] netif_change_flags+0xfe/0x190 [ 18.021168][ C2] do_setlink.isra.0+0x1cc3/0x2750 [ 18.021287][ C2] rtnl_newlink+0x8d1/0xef0 [ 18.021405][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.021527][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 18.021648][ C2] netlink_unicast+0x486/0x750 [ 18.021767][ C2] netlink_sendmsg+0x735/0xc60 [ 18.021893][ C2] ____sys_sendmsg+0x419/0x850 [ 18.022011][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 18.022130][ C2] __sys_sendmsg+0x145/0x1f0 [ 18.022248][ C2] do_syscall_64+0x117/0x590 [ 18.022368][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.022512][ C2] INITIAL READ USE at: [ 18.022584][ C2] __lock_acquire+0x378/0xc10 [ 18.022704][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.022830][ C2] _raw_read_lock_bh+0x44/0x80 [ 18.022949][ C2] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 18.023091][ C2] inet6_fill_link_af+0x5c/0xe0 [ 18.023211][ C2] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 18.023354][ C2] rtnl_getlink+0x9c9/0xeb0 [ 18.023476][ C2] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 18.023596][ C2] netlink_rcv_skb+0x14e/0x3a0 [ 18.023715][ C2] netlink_unicast+0x486/0x750 [ 18.023840][ C2] netlink_sendmsg+0x735/0xc60 [ 18.023959][ C2] ____sys_sendmsg+0x419/0x850 [ 18.024078][ C2] ___sys_sendmsg+0x14e/0x1d0 [ 18.024197][ C2] __sys_sendmsg+0x145/0x1f0 [ 18.024316][ C2] do_syscall_64+0x117/0x590 [ 18.024436][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.024579][ C2] } [ 18.024628][ C2] ... key at: [] __key.37+0x0/0x40 [ 18.024772][ C2] ... acquired at: [ 18.024850][ C2] mark_lock+0x1d7/0xa00 [ 18.024944][ C2] mark_usage+0x42/0x170 [ 18.025040][ C2] __lock_acquire+0x378/0xc10 [ 18.025134][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.025229][ C2] _raw_read_lock_bh+0x44/0x80 [ 18.025322][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 18.025418][ C2] ndisc_send_ns+0xf3/0x120 [ 18.025517][ C2] ndisc_solicit+0x314/0x480 [ 18.025613][ C2] neigh_probe+0xb3/0x100 [ 18.025709][ C2] __neigh_event_send+0x802/0x1070 [ 18.025805][ C2] neigh_resolve_output+0xbe/0x140 [ 18.025903][ C2] ip6_finish_output2+0x423/0x1300 [ 18.025998][ C2] ip6_finish_output+0x646/0xda0 [ 18.026093][ C2] ip6_output+0x23f/0x7f0 [ 18.026247][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.026367][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.026465][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.026584][ C2] dev_hard_start_xmit+0xf8/0x690 [ 18.026736][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 18.026834][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 18.026930][ C2] ip_output+0x1ca/0x660 [ 18.027024][ C2] ip_rcv+0xdc/0x3d0 [ 18.027154][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 18.027270][ C2] process_backlog+0x2bc/0x1490 [ 18.027364][ C2] __napi_poll+0xa7/0x3b0 [ 18.027459][ C2] net_rx_action+0x513/0xf50 [ 18.027609][ C2] handle_softirqs+0x1d8/0x940 [ 18.027703][ C2] do_softirq+0xa9/0xe0 [ 18.027775][ C2] __local_bh_enable_ip+0x113/0x140 [ 18.027874][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 18.028026][ C2] packet_snd+0xfad/0x1990 [ 18.028121][ C2] __sys_sendto+0x2c9/0x400 [ 18.028216][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 18.028310][ C2] do_syscall_64+0x117/0x590 [ 18.028463][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.028582][ C2] [ 18.028630][ C2] [ 18.028630][ C2] stack backtrace: [ 18.028750][ C2] CPU: 2 UID: 0 PID: 373 Comm: mausezahn Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 18.028753][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.028755][ C2] Call Trace: [ 18.028756][ C2] [ 18.028757][ C2] dump_stack_lvl+0x6f/0xa0 [ 18.028761][ C2] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 18.028764][ C2] mark_lock_irq+0x989/0x9c0 [ 18.028767][ C2] mark_lock+0x1d7/0xa00 [ 18.028769][ C2] mark_usage+0x42/0x170 [ 18.028770][ C2] __lock_acquire+0x378/0xc10 [ 18.028772][ C2] ? __lock_acquire+0x508/0xc10 [ 18.028774][ C2] lock_acquire.part.0+0xbc/0x260 [ 18.028775][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 18.028777][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028780][ C2] ? lock_acquire+0x134/0x160 [ 18.028782][ C2] _raw_read_lock_bh+0x44/0x80 [ 18.028783][ C2] ? ipv6_get_lladdr+0xa8/0x3f0 [ 18.028785][ C2] ipv6_get_lladdr+0xa8/0x3f0 [ 18.028787][ C2] ndisc_send_ns+0xf3/0x120 [ 18.028789][ C2] ? __ipv6_chk_addr_and_flags+0x251/0x5f0 [ 18.028791][ C2] ? ndisc_parse_options+0x30/0x30 [ 18.028792][ C2] ? __ipv6_chk_addr_and_flags+0x25b/0x5f0 [ 18.028794][ C2] ndisc_solicit+0x314/0x480 [ 18.028796][ C2] ? ndisc_send_ns+0x120/0x120 [ 18.028798][ C2] ? neigh_probe+0x62/0x100 [ 18.028800][ C2] neigh_probe+0xb3/0x100 [ 18.028802][ C2] __neigh_event_send+0x802/0x1070 [ 18.028803][ C2] ? warn_bogus_irq_restore+0x1/0x20 [ 18.028806][ C2] ? ___neigh_create+0x811/0x1070 [ 18.028808][ C2] neigh_resolve_output+0xbe/0x140 [ 18.028810][ C2] ip6_finish_output2+0x423/0x1300 [ 18.028812][ C2] ? ip6_xmit+0x2000/0x2000 [ 18.028814][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 18.028815][ C2] ? find_held_lock+0x2b/0x80 [ 18.028818][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 18.028824][ C2] ? ip6_mtu+0x15d/0x310 [ 18.028826][ C2] ip6_finish_output+0x646/0xda0 [ 18.028828][ C2] ip6_output+0x23f/0x7f0 [ 18.028830][ C2] ? ip6_finish_output+0xda0/0xda0 [ 18.028832][ C2] ? l3mdev_l3_out.constprop.0+0xe5/0x340 [ 18.028835][ C2] ip6_tnl_xmit+0x1713/0x31b0 [ip6_tunnel] [ 18.028838][ C2] ? ip_route_input+0x420/0x420 [ip6_tunnel] [ 18.028840][ C2] ? pskb_expand_head+0x4ac/0xf50 [ 18.028843][ C2] ? __lock_acquire+0x508/0xc10 [ 18.028845][ C2] ? __pskb_copy_fclone+0x1080/0x1080 [ 18.028847][ C2] __gre6_xmit+0x9b6/0x1910 [ip6_gre] [ 18.028849][ C2] ? __ipv6_chk_addr_and_flags+0x1b0/0x5f0 [ 18.028851][ C2] ? gre_build_header+0xa70/0xa70 [ip6_gre] [ 18.028853][ C2] ? ip6_tnl_xmit_ctl+0x21e/0x390 [ip6_tunnel] [ 18.028855][ C2] ? __asan_memcpy+0x3c/0x60 [ 18.028859][ C2] ip6gre_tunnel_xmit+0x8f2/0xd40 [ip6_gre] [ 18.028861][ C2] ? __gre6_xmit+0x1910/0x1910 [ip6_gre] [ 18.028863][ C2] ? sock_def_readable+0x156/0x490 [ 18.028865][ C2] ? find_held_lock+0x2b/0x80 [ 18.028867][ C2] ? dev_queue_xmit_nit+0x642/0x9e0 [ 18.028870][ C2] dev_hard_start_xmit+0xf8/0x690 [ 18.028872][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.028874][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028876][ C2] __dev_queue_xmit+0xbf4/0x1b60 [ 18.028879][ C2] ? __lock_acquire+0x508/0xc10 [ 18.028881][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 18.028882][ C2] ? find_held_lock+0x2b/0x80 [ 18.028884][ C2] ? __lock_release.isra.0+0x6b/0x1a0 [ 18.028886][ C2] ? ___neigh_create+0x811/0x1070 [ 18.028888][ C2] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.028890][ C2] ip_finish_output2+0x5b9/0x1bc0 [ 18.028893][ C2] ? ip_dst_mtu_maybe_forward+0x261/0x670 [ 18.028895][ C2] ? ip4_dst_hoplimit+0x320/0x320 [ 18.028897][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028899][ C2] ip_output+0x1ca/0x660 [ 18.028900][ C2] ? ip_finish_output+0x460/0x460 [ 18.028901][ C2] ? ip4_frag_init+0x720/0x720 [ 18.028904][ C2] ? ip_forward+0xfa7/0x1570 [ 18.028906][ C2] ? process_backlog+0x561/0x1490 [ 18.028907][ C2] ip_rcv+0xdc/0x3d0 [ 18.028909][ C2] ? ip_local_deliver+0x4c0/0x4c0 [ 18.028911][ C2] ? mark_usage+0x61/0x170 [ 18.028913][ C2] ? __lock_acquire+0x508/0xc10 [ 18.028914][ C2] __netif_receive_skb_one_core+0xfc/0x180 [ 18.028916][ C2] ? lock_acquire.part.0+0xbc/0x260 [ 18.028917][ C2] ? __netif_receive_skb_list_core+0x9e0/0x9e0 [ 18.028919][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028921][ C2] process_backlog+0x2bc/0x1490 [ 18.028923][ C2] __napi_poll+0xa7/0x3b0 [ 18.028925][ C2] net_rx_action+0x513/0xf50 [ 18.028927][ C2] ? __napi_poll+0x3b0/0x3b0 [ 18.028928][ C2] ? find_held_lock+0x2b/0x80 [ 18.028932][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028934][ C2] handle_softirqs+0x1d8/0x940 [ 18.028935][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028937][ C2] ? _local_bh_enable+0xd0/0xd0 [ 18.028938][ C2] ? trace_csd_function_exit+0xb3/0x1a0 [ 18.028941][ C2] ? rcu_is_watching+0x15/0xd0 [ 18.028943][ C2] do_softirq+0xa9/0xe0 [ 18.028944][ C2] [ 18.028945][ C2] [ 18.028945][ C2] ? __dev_queue_xmit+0x946/0x1b60 [ 18.028947][ C2] __local_bh_enable_ip+0x113/0x140 [ 18.028949][ C2] __dev_queue_xmit+0x95b/0x1b60 [ 18.028951][ C2] ? _copy_from_iter+0x1bb/0x1810 [ 18.028955][ C2] ? _copy_from_iter_flushcache+0x1970/0x1970 [ 18.028956][ C2] ? net_dim+0x730/0xd70 [ 18.028958][ C2] ? netdev_core_pick_tx+0x2c0/0x2c0 [ 18.028962][ C2] ? packet_release+0xc70/0xc70 [ 18.028964][ C2] packet_snd+0xfad/0x1990 [ 18.028967][ C2] ? tpacket_snd+0x19e0/0x19e0 [ 18.028968][ C2] ? __might_fault+0x97/0x140 [ 18.028972][ C2] ? __might_fault+0x97/0x140 [ 18.028973][ C2] ? __might_fault+0x97/0x140 [ 18.028974][ C2] __sys_sendto+0x2c9/0x400 [ 18.028976][ C2] ? __ia32_sys_getpeername+0xd0/0xd0 [ 18.028979][ C2] ? sock_ioctl+0x3cb/0x5f0 [ 18.028982][ C2] ? do_user_addr_fault+0x325/0xe30 [ 18.028986][ C2] __x64_sys_sendto+0xe4/0x1f0 [ 18.028988][ C2] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 18.028990][ C2] ? lockdep_hardirqs_on+0x8c/0x130 [ 18.028992][ C2] ? do_syscall_64+0x82/0x590 [ 18.028993][ C2] do_syscall_64+0x117/0x590 [ 18.028994][ C2] ? trace_hardirqs_off+0xd/0x30 [ 18.028996][ C2] ? exc_page_fault+0xee/0x100 [ 18.028998][ C2] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.028999][ C2] RIP: 0033:0x7f4af53be08e [ 18.029001][ 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 [ 18.029003][ C2] RSP: 002b:00007ffc91ce89d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 18.029006][ C2] RAX: ffffffffffffffda RBX: 000055b09d2e4b22 RCX: 00007f4af53be08e [ 18.029007][ C2] RDX: 0000000000000062 RSI: 000055b09d2e4b22 RDI: 0000000000000005 [ 18.029008][ C2] RBP: 00007ffc91ce89e0 R08: 00007ffc91ce8a30 R09: 0000000000000014 [ 18.029009][ C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000055b09d2e4830 [ 18.029010][ C2] R13: 0000000000000062 R14: 0000000000000005 R15: 000055b09d2e4830 [ 18.029012][ C2]