[ 30.456591][ T247] ip (247) used greatest stack depth: 24144 bytes left [ 981.662768][ T8909] ip (8909) used greatest stack depth: 23392 bytes left [ 1008.018165][ C3] [ 1008.018282][ C3] ======================================================== [ 1008.018523][ C3] WARNING: possible irq lock inversion dependency detected [ 1008.018762][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 1008.018919][ C3] -------------------------------------------------------- [ 1008.019145][ C3] ping/9120 just changed the state of lock: [ 1008.019334][ C3] ffff888007c15580 (&ndev->lock){++.-}-{2:2}, at: ipv6_get_lladdr+0xa9/0x3e0 [ 1008.019636][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 1008.019876][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 1008.019880][ C3] [ 1008.019880][ C3] [ 1008.019880][ C3] and interrupts could create inverse lock ordering between them. [ 1008.019880][ C3] [ 1008.020451][ C3] [ 1008.020451][ C3] other info that might help us debug this: [ 1008.020680][ C3] Possible interrupt unsafe locking scenario: [ 1008.020680][ C3] [ 1008.020911][ C3] CPU0 CPU1 [ 1008.021070][ C3] ---- ---- [ 1008.021230][ C3] lock(&p->alloc_lock); [ 1008.021351][ C3] local_irq_disable(); [ 1008.021542][ C3] lock(&ndev->lock); [ 1008.021753][ C3] lock(&p->alloc_lock); [ 1008.021945][ C3] [ 1008.022062][ C3] lock(&ndev->lock); [ 1008.022184][ C3] [ 1008.022184][ C3] *** DEADLOCK *** [ 1008.022184][ C3] [ 1008.022414][ C3] 5 locks held by ping/9120: [ 1008.022569][ C3] #0: ffff888006185c98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: rawv6_sendmsg+0xd17/0x17d0 [ 1008.022852][ C3] #1: ffffffffb9166360 (rcu_read_lock){....}-{1:2}, at: ip6_finish_output2+0x32b/0xf60 [ 1008.023140][ C3] #2: ffffffffb9166360 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x1f8/0x670 [ 1008.023416][ C3] #3: ffffffffb9166360 (rcu_read_lock){....}-{1:2}, at: ip6_finish_output2+0x32b/0xf60 [ 1008.023692][ C3] #4: ffffffffb9166360 (rcu_read_lock){....}-{1:2}, at: ipv6_get_lladdr+0x39/0x3e0 [ 1008.023966][ C3] [ 1008.023966][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 1008.024241][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 1008.024403][ C3] HARDIRQ-ON-W at: [ 1008.024523][ C3] __lock_acquire+0x797/0x1570 [ 1008.024724][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.024920][ C3] _raw_spin_lock+0x30/0x40 [ 1008.025120][ C3] set_mems_allowed+0x1d/0x210 [ 1008.025322][ C3] kernel_init_freeable+0x72/0x310 [ 1008.025545][ C3] kernel_init+0x20/0x200 [ 1008.025746][ C3] ret_from_fork+0x31/0x70 [ 1008.025946][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.026179][ C3] SOFTIRQ-ON-W at: [ 1008.026301][ C3] __lock_acquire+0x797/0x1570 [ 1008.026504][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.026711][ C3] _raw_spin_lock+0x30/0x40 [ 1008.026913][ C3] set_mems_allowed+0x1d/0x210 [ 1008.027117][ C3] kernel_init_freeable+0x72/0x310 [ 1008.027316][ C3] kernel_init+0x20/0x200 [ 1008.027513][ C3] ret_from_fork+0x31/0x70 [ 1008.027716][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.027915][ C3] INITIAL USE at: [ 1008.028039][ C3] __lock_acquire+0x797/0x1570 [ 1008.028248][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.028450][ C3] _raw_spin_lock+0x30/0x40 [ 1008.028651][ C3] set_mems_allowed+0x1d/0x210 [ 1008.028854][ C3] kernel_init_freeable+0x72/0x310 [ 1008.029048][ C3] kernel_init+0x20/0x200 [ 1008.029244][ C3] ret_from_fork+0x31/0x70 [ 1008.029442][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.029637][ C3] } [ 1008.029717][ C3] ... key at: [] __key.388+0x0/0x40 [ 1008.029955][ C3] ... acquired at: [ 1008.030080][ C3] __lock_acquire+0xaf0/0x1570 [ 1008.030240][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.030396][ C3] _raw_spin_lock+0x30/0x40 [ 1008.030554][ C3] __get_task_comm+0x27/0x70 [ 1008.030714][ C3] ref_tracker_alloc+0x2ee/0x490 [ 1008.030872][ C3] netdev_get_by_index+0x5e/0x80 [ 1008.031026][ C3] fib6_nh_init+0x3d8/0x1580 [ 1008.031183][ C3] ip6_route_info_create+0xf18/0x17d0 [ 1008.031343][ C3] addrconf_f6i_alloc+0x265/0x560 [ 1008.031500][ C3] __ipv6_dev_ac_inc+0x25f/0xb10 [ 1008.031667][ C3] addrconf_join_anycast+0x1c0/0x220 [ 1008.031824][ C3] __ipv6_ifa_notify+0x6b3/0xaf0 [ 1008.031981][ C3] addrconf_dad_completed+0x12b/0xe20 [ 1008.032143][ C3] addrconf_dad_begin+0x310/0x670 [ 1008.032303][ C3] addrconf_dad_work+0x10b/0xab0 [ 1008.032464][ C3] process_one_work+0xe2c/0x1730 [ 1008.032624][ C3] worker_thread+0x587/0xd30 [ 1008.032790][ C3] kthread+0x28a/0x350 [ 1008.032912][ C3] ret_from_fork+0x31/0x70 [ 1008.033074][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.033232][ C3] [ 1008.033312][ C3] -> (&ndev->lock){++.-}-{2:2} { [ 1008.033486][ C3] HARDIRQ-ON-W at: [ 1008.033612][ C3] __lock_acquire+0x797/0x1570 [ 1008.033823][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.034020][ C3] _raw_write_lock_bh+0x38/0x50 [ 1008.034217][ C3] addrconf_permanent_addr+0x6e/0x670 [ 1008.034419][ C3] addrconf_notify+0x749/0xd60 [ 1008.034622][ C3] notifier_call_chain+0xcd/0x150 [ 1008.034824][ C3] __dev_notify_flags+0xe6/0x250 [ 1008.035025][ C3] dev_change_flags+0xec/0x160 [ 1008.035220][ C3] do_setlink+0x7d6/0x21e0 [ 1008.035415][ C3] __rtnl_newlink+0xaa7/0xd80 [ 1008.035611][ C3] rtnl_newlink+0x63/0xa0 [ 1008.035814][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1008.036015][ C3] netlink_rcv_skb+0x130/0x360 [ 1008.036230][ C3] netlink_unicast+0x449/0x710 [ 1008.036431][ C3] netlink_sendmsg+0x723/0xbe0 [ 1008.036627][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 1008.036828][ C3] ___sys_sendmsg+0xee/0x170 [ 1008.037024][ C3] __sys_sendmsg+0xcd/0x170 [ 1008.037221][ C3] do_syscall_64+0xc6/0x1e0 [ 1008.037419][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1008.037661][ C3] HARDIRQ-ON-R at: [ 1008.037788][ C3] __lock_acquire+0x797/0x1570 [ 1008.037990][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.038192][ C3] _raw_read_lock_bh+0x44/0x80 [ 1008.038387][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 1008.038583][ C3] inet6_fill_link_af+0x5e/0xe0 [ 1008.038786][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 1008.038987][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 1008.039189][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 1008.039435][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 1008.039647][ C3] register_netdevice+0x1177/0x1690 [ 1008.039843][ C3] register_netdev+0x20/0x40 [ 1008.040038][ C3] vti6_init_net+0x25d/0x380 [ 1008.040244][ C3] ops_init+0x9b/0x560 [ 1008.040400][ C3] register_pernet_operations+0x2db/0x710 [ 1008.040633][ C3] register_pernet_device+0x2a/0x60 [ 1008.040838][ C3] vti6_tunnel_init+0x18/0x110 [ 1008.041036][ C3] do_one_initcall+0x8d/0x1e0 [ 1008.041243][ C3] do_initcalls+0x1b2/0x3e0 [ 1008.041441][ C3] kernel_init_freeable+0x232/0x310 [ 1008.041747][ C3] kernel_init+0x20/0x200 [ 1008.041944][ C3] ret_from_fork+0x31/0x70 [ 1008.042140][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.042447][ C3] IN-SOFTIRQ-R at: [ 1008.042564][ C3] __lock_acquire+0x797/0x1570 [ 1008.042761][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.042974][ C3] _raw_read_lock_bh+0x44/0x80 [ 1008.043271][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 1008.043464][ C3] ndisc_send_ns+0xe7/0x100 [ 1008.043659][ C3] ndisc_solicit+0x2ae/0x4d0 [ 1008.043958][ C3] neigh_probe+0xaa/0xf0 [ 1008.044165][ C3] __neigh_event_send+0x7af/0xfe0 [ 1008.044362][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.044576][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.044876][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.045068][ C3] ip6_output+0x1f3/0x770 [ 1008.045260][ C3] ip6_forward+0xf29/0x2980 [ 1008.045456][ C3] ipv6_rcv+0x626/0x810 [ 1008.045657][ C3] __netif_receive_skb_one_core+0x118/0x1b0 [ 1008.045901][ C3] process_backlog+0x103/0x670 [ 1008.046221][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 1008.046417][ C3] net_rx_action+0x49f/0xc00 [ 1008.046619][ C3] __do_softirq+0x1f8/0x5df [ 1008.046819][ C3] do_softirq+0x4d/0xa0 [ 1008.047121][ C3] __local_bh_enable_ip+0xf6/0x120 [ 1008.047325][ C3] __neigh_event_send+0x2e4/0xfe0 [ 1008.047523][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.047831][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.048028][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.048221][ C3] ip6_output+0x1f3/0x770 [ 1008.048416][ C3] ip6_send_skb+0xbd/0x280 [ 1008.048610][ C3] rawv6_push_pending_frames+0x518/0x9d0 [ 1008.048851][ C3] rawv6_sendmsg+0x1287/0x17d0 [ 1008.049055][ C3] __sys_sendto+0x332/0x410 [ 1008.049370][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 1008.049566][ C3] do_syscall_64+0xc6/0x1e0 [ 1008.049770][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1008.050105][ C3] INITIAL USE at: [ 1008.050230][ C3] __lock_acquire+0x797/0x1570 [ 1008.050427][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.050632][ C3] _raw_write_lock_bh+0x38/0x50 [ 1008.050947][ C3] addrconf_permanent_addr+0x6e/0x670 [ 1008.051143][ C3] addrconf_notify+0x749/0xd60 [ 1008.051340][ C3] notifier_call_chain+0xcd/0x150 [ 1008.051634][ C3] __dev_notify_flags+0xe6/0x250 [ 1008.051836][ C3] dev_change_flags+0xec/0x160 [ 1008.052034][ C3] do_setlink+0x7d6/0x21e0 [ 1008.052332][ C3] __rtnl_newlink+0xaa7/0xd80 [ 1008.052528][ C3] rtnl_newlink+0x63/0xa0 [ 1008.052723][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 1008.052917][ C3] netlink_rcv_skb+0x130/0x360 [ 1008.053225][ C3] netlink_unicast+0x449/0x710 [ 1008.053439][ C3] netlink_sendmsg+0x723/0xbe0 [ 1008.053636][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 1008.053936][ C3] ___sys_sendmsg+0xee/0x170 [ 1008.054133][ C3] __sys_sendmsg+0xcd/0x170 [ 1008.054329][ C3] do_syscall_64+0xc6/0x1e0 [ 1008.054526][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1008.054872][ C3] INITIAL READ USE at: [ 1008.055004][ C3] __lock_acquire+0x797/0x1570 [ 1008.055199][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.055495][ C3] _raw_read_lock_bh+0x44/0x80 [ 1008.055690][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 1008.055922][ C3] inet6_fill_link_af+0x5e/0xe0 [ 1008.056244][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 1008.056445][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 1008.056680][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 1008.057027][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 1008.057226][ C3] register_netdevice+0x1177/0x1690 [ 1008.057460][ C3] register_netdev+0x20/0x40 [ 1008.057663][ C3] vti6_init_net+0x25d/0x380 [ 1008.057975][ C3] ops_init+0x9b/0x560 [ 1008.058169][ C3] register_pernet_operations+0x2db/0x710 [ 1008.058418][ C3] register_pernet_device+0x2a/0x60 [ 1008.058654][ C3] vti6_tunnel_init+0x18/0x110 [ 1008.058855][ C3] do_one_initcall+0x8d/0x1e0 [ 1008.059055][ C3] do_initcalls+0x1b2/0x3e0 [ 1008.059357][ C3] kernel_init_freeable+0x232/0x310 [ 1008.059599][ C3] kernel_init+0x20/0x200 [ 1008.059801][ C3] ret_from_fork+0x31/0x70 [ 1008.060095][ C3] ret_from_fork_asm+0x1a/0x30 [ 1008.060289][ C3] } [ 1008.060373][ C3] ... key at: [] __key.37+0x0/0x40 [ 1008.060609][ C3] ... acquired at: [ 1008.060840][ C3] mark_lock+0x28d/0x3e0 [ 1008.061000][ C3] mark_usage+0xd9/0x2a0 [ 1008.061159][ C3] __lock_acquire+0x797/0x1570 [ 1008.061332][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.061488][ C3] _raw_read_lock_bh+0x44/0x80 [ 1008.061643][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 1008.061801][ C3] ndisc_send_ns+0xe7/0x100 [ 1008.061957][ C3] ndisc_solicit+0x2ae/0x4d0 [ 1008.062113][ C3] neigh_probe+0xaa/0xf0 [ 1008.062366][ C3] __neigh_event_send+0x7af/0xfe0 [ 1008.062521][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.062676][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.062831][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.063085][ C3] ip6_output+0x1f3/0x770 [ 1008.063242][ C3] ip6_forward+0xf29/0x2980 [ 1008.063397][ C3] ipv6_rcv+0x626/0x810 [ 1008.063516][ C3] __netif_receive_skb_one_core+0x118/0x1b0 [ 1008.063816][ C3] process_backlog+0x103/0x670 [ 1008.063974][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 1008.064129][ C3] net_rx_action+0x49f/0xc00 [ 1008.064284][ C3] __do_softirq+0x1f8/0x5df [ 1008.064441][ C3] do_softirq+0x4d/0xa0 [ 1008.064558][ C3] __local_bh_enable_ip+0xf6/0x120 [ 1008.064717][ C3] __neigh_event_send+0x2e4/0xfe0 [ 1008.064872][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.065027][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.065280][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.065434][ C3] ip6_output+0x1f3/0x770 [ 1008.065588][ C3] ip6_send_skb+0xbd/0x280 [ 1008.065744][ C3] rawv6_push_pending_frames+0x518/0x9d0 [ 1008.066041][ C3] rawv6_sendmsg+0x1287/0x17d0 [ 1008.066213][ C3] __sys_sendto+0x332/0x410 [ 1008.066369][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 1008.066529][ C3] do_syscall_64+0xc6/0x1e0 [ 1008.066784][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1008.066977][ C3] [ 1008.067054][ C3] [ 1008.067054][ C3] stack backtrace: [ 1008.067257][ C3] CPU: 3 PID: 9120 Comm: ping Not tainted 6.9.0-rc1-virtme #1 [ 1008.067489][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1008.067838][ C3] Call Trace: [ 1008.067959][ C3] [ 1008.068040][ C3] dump_stack_lvl+0x82/0xd0 [ 1008.068300][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 1008.068494][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 1008.068687][ C3] ? __pfx_usage_skip+0x10/0x10 [ 1008.068843][ C3] ? __pfx_usage_match+0x10/0x10 [ 1008.069102][ C3] ? arch_stack_walk+0xa2/0xf0 [ 1008.069261][ C3] mark_lock_irq+0x4cd/0xa10 [ 1008.069417][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 1008.069581][ C3] ? stack_trace_save+0x94/0xd0 [ 1008.069843][ C3] ? save_trace+0x8f/0x5b0 [ 1008.069999][ C3] mark_lock+0x28d/0x3e0 [ 1008.070117][ C3] mark_usage+0xd9/0x2a0 [ 1008.070234][ C3] __lock_acquire+0x797/0x1570 [ 1008.070391][ C3] lock_acquire.part.0+0xeb/0x330 [ 1008.070550][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 1008.070709][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1008.070865][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 1008.071020][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 1008.071274][ C3] ? lock_acquire+0x32/0xc0 [ 1008.071430][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 1008.071619][ C3] _raw_read_lock_bh+0x44/0x80 [ 1008.071779][ C3] ? ipv6_get_lladdr+0xa9/0x3e0 [ 1008.072034][ C3] ipv6_get_lladdr+0xa9/0x3e0 [ 1008.072189][ C3] ndisc_send_ns+0xe7/0x100 [ 1008.072343][ C3] ? __pfx_ndisc_send_ns+0x10/0x10 [ 1008.072498][ C3] ? __ipv6_chk_addr_and_flags+0x393/0x650 [ 1008.072799][ C3] ndisc_solicit+0x2ae/0x4d0 [ 1008.072954][ C3] ? __pfx_ndisc_solicit+0x10/0x10 [ 1008.073108][ C3] ? neigh_probe+0x57/0xf0 [ 1008.073267][ C3] neigh_probe+0xaa/0xf0 [ 1008.073386][ C3] __neigh_event_send+0x7af/0xfe0 [ 1008.073546][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.073705][ C3] ? __local_bh_enable_ip+0xa6/0x120 [ 1008.073861][ C3] ? ___neigh_create+0x7c6/0xe10 [ 1008.074022][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.074277][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.074432][ C3] ip6_output+0x1f3/0x770 [ 1008.074549][ C3] ? __pfx_ip6_output+0x10/0x10 [ 1008.074707][ C3] ? ip6_dst_mtu_maybe_forward.constprop.0+0x189/0x3c0 [ 1008.075003][ C3] ip6_forward+0xf29/0x2980 [ 1008.075159][ C3] ? ip6_route_input+0x5a4/0xa50 [ 1008.075319][ C3] ? __pfx_ip6_forward+0x10/0x10 [ 1008.075478][ C3] ? ip6_rcv_core+0x9e5/0x1ae0 [ 1008.075830][ C3] ? ipv6_rcv+0x626/0x810 [ 1008.075948][ C3] ipv6_rcv+0x626/0x810 [ 1008.076064][ C3] ? __pfx_ipv6_rcv+0x10/0x10 [ 1008.076234][ C3] ? lock_acquire.part.0+0xeb/0x330 [ 1008.076389][ C3] ? process_backlog+0x1f8/0x670 [ 1008.076552][ C3] ? __pfx_ipv6_rcv+0x10/0x10 [ 1008.076711][ C3] __netif_receive_skb_one_core+0x118/0x1b0 [ 1008.076905][ C3] ? __pfx___netif_receive_skb_one_core+0x10/0x10 [ 1008.077128][ C3] ? process_backlog+0x1f8/0x670 [ 1008.077404][ C3] ? lock_acquire+0x32/0xc0 [ 1008.077562][ C3] ? process_backlog+0x1f8/0x670 [ 1008.077719][ C3] process_backlog+0x103/0x670 [ 1008.077875][ C3] __napi_poll.constprop.0+0xa2/0x460 [ 1008.078134][ C3] net_rx_action+0x49f/0xc00 [ 1008.078304][ C3] ? __pfx_net_rx_action+0x10/0x10 [ 1008.078474][ C3] ? usage_skip+0x150/0x190 [ 1008.078629][ C3] ? mark_held_locks+0x9e/0xe0 [ 1008.078887][ C3] __do_softirq+0x1f8/0x5df [ 1008.079045][ C3] ? __neigh_event_send+0x2df/0xfe0 [ 1008.079201][ C3] do_softirq+0x4d/0xa0 [ 1008.079320][ C3] [ 1008.079402][ C3] [ 1008.079486][ C3] __local_bh_enable_ip+0xf6/0x120 [ 1008.079739][ C3] __neigh_event_send+0x2e4/0xfe0 [ 1008.079906][ C3] neigh_resolve_output+0x470/0x7c0 [ 1008.080060][ C3] ? __local_bh_enable_ip+0xa6/0x120 [ 1008.080213][ C3] ? ___neigh_create+0x7c6/0xe10 [ 1008.080467][ C3] ip6_finish_output2+0x512/0xf60 [ 1008.080623][ C3] ip6_finish_output+0x553/0xdf0 [ 1008.080779][ C3] ip6_output+0x1f3/0x770 [ 1008.080895][ C3] ? __pfx___ip6_make_skb+0x10/0x10 [ 1008.081053][ C3] ? __pfx_ip6_output+0x10/0x10 [ 1008.081310][ C3] ? ip6_local_out+0x25/0x3b0 [ 1008.081468][ C3] ip6_send_skb+0xbd/0x280 [ 1008.081653][ C3] rawv6_push_pending_frames+0x518/0x9d0 [ 1008.081808][ C3] ? __pfx_raw6_getfrag+0x10/0x10 [ 1008.082067][ C3] ? ip6_append_data+0x185/0x540 [ 1008.082223][ C3] ? __pfx_rawv6_push_pending_frames+0x10/0x10 [ 1008.082432][ C3] rawv6_sendmsg+0x1287/0x17d0 [ 1008.082590][ C3] ? __pfx_validate_chain+0x10/0x10 [ 1008.082848][ C3] ? __pfx_rawv6_sendmsg+0x10/0x10 [ 1008.083002][ C3] ? __lock_acquire+0xaf0/0x1570 [ 1008.083158][ C3] ? find_held_lock+0x2c/0x110 [ 1008.083336][ C3] ? __might_fault+0x11b/0x170 [ 1008.083494][ C3] ? lock_acquire+0x32/0xc0 [ 1008.083652][ C3] ? __might_fault+0xc3/0x170 [ 1008.083820][ C3] ? __might_fault+0x11b/0x170 [ 1008.083978][ C3] ? __sys_sendto+0x332/0x410 [ 1008.084248][ C3] __sys_sendto+0x332/0x410 [ 1008.084425][ C3] ? __pfx___sys_sendto+0x10/0x10 [ 1008.084585][ C3] ? do_user_addr_fault+0x449/0xbe0 [ 1008.084762][ C3] ? reacquire_held_locks+0x22f/0x4f0 [ 1008.084921][ C3] ? __lock_release+0x103/0x460 [ 1008.085179][ C3] ? do_user_addr_fault+0x4b8/0xbe0 [ 1008.085341][ C3] ? __up_read+0x1a7/0x780 [ 1008.085507][ C3] ? __pfx___up_read+0x10/0x10 [ 1008.085671][ C3] ? do_user_addr_fault+0x4b8/0xbe0 [ 1008.085924][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 1008.086098][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 1008.086301][ C3] do_syscall_64+0xc6/0x1e0 [ 1008.086461][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 1008.086754][ C3] RIP: 0033:0x7f198c4e485a [ 1008.086936][ C3] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 1008.087602][ C3] RSP: 002b:00007fff04958428 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 1008.087850][ C3] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f198c4e485a [ 1008.088083][ C3] RDX: 0000000000000040 RSI: 0000000030355340 RDI: 0000000000000006 [ 1008.088522][ C3] RBP: 00007fff049584b0 R08: 0000000000418574 R09: 000000000000001c [ 1008.088764][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000419ac0 [ 1008.089095][ C3] R13: 000000000040305a R14: 0000000000415dd0 R15: 00007f198c60a000 [ 1008.089343][ C3]