[ 30.646170][ C2] [ 30.646293][ C2] ======================================================== [ 30.646616][ C2] WARNING: possible irq lock inversion dependency detected [ 30.646948][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 30.647169][ C2] -------------------------------------------------------- [ 30.647502][ C2] ip/316 just changed the state of lock: [ 30.647738][ C2] ffff888007feed80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 30.648147][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 30.648479][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 30.648486][ C2] [ 30.648486][ C2] [ 30.648486][ C2] and interrupts could create inverse lock ordering between them. [ 30.648486][ C2] [ 30.649306][ C2] [ 30.649306][ C2] other info that might help us debug this: [ 30.649641][ C2] Possible interrupt unsafe locking scenario: [ 30.649641][ C2] [ 30.649976][ C2] CPU0 CPU1 [ 30.650207][ C2] ---- ---- [ 30.650439][ C2] lock(&p->alloc_lock); [ 30.650612][ C2] local_irq_disable(); [ 30.650888][ C2] lock(&ndev->lock); [ 30.651175][ C2] lock(&p->alloc_lock); [ 30.651457][ C2] [ 30.651628][ C2] lock(&ndev->lock); [ 30.651801][ C2] [ 30.651801][ C2] *** DEADLOCK *** [ 30.651801][ C2] [ 30.652131][ C2] 2 locks held by ip/316: [ 30.652303][ C2] #0: ffff888002807178 (&ent->pde_unload_lock){+.+.}-{2:2}, at: close_pdeo.part.0+0xed/0x300 [ 30.652771][ C2] #1: ffffc90000230b68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 30.653174][ C2] [ 30.653174][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 30.653568][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 30.653805][ C2] HARDIRQ-ON-W at: [ 30.653980][ C2] __lock_acquire+0x797/0x1570 [ 30.654273][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.654561][ C2] _raw_spin_lock+0x30/0x40 [ 30.654851][ C2] set_mems_allowed+0x1d/0x210 [ 30.655142][ C2] kernel_init_freeable+0x72/0x310 [ 30.655443][ C2] kernel_init+0x20/0x200 [ 30.655735][ C2] ret_from_fork+0x31/0x70 [ 30.656025][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.656312][ C2] SOFTIRQ-ON-W at: [ 30.656484][ C2] __lock_acquire+0x797/0x1570 [ 30.656771][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.657061][ C2] _raw_spin_lock+0x30/0x40 [ 30.657353][ C2] set_mems_allowed+0x1d/0x210 [ 30.657638][ C2] kernel_init_freeable+0x72/0x310 [ 30.657923][ C2] kernel_init+0x20/0x200 [ 30.658209][ C2] ret_from_fork+0x31/0x70 [ 30.658498][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.658788][ C2] INITIAL USE at: [ 30.658960][ C2] __lock_acquire+0x797/0x1570 [ 30.659248][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.659534][ C2] _raw_spin_lock+0x30/0x40 [ 30.659819][ C2] set_mems_allowed+0x1d/0x210 [ 30.660104][ C2] kernel_init_freeable+0x72/0x310 [ 30.660391][ C2] kernel_init+0x20/0x200 [ 30.660678][ C2] ret_from_fork+0x31/0x70 [ 30.660964][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.661252][ C2] } [ 30.661370][ C2] ... key at: [] __key.388+0x0/0x40 [ 30.661710][ C2] ... acquired at: [ 30.661880][ C2] __lock_acquire+0xaf0/0x1570 [ 30.662111][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.662345][ C2] _raw_spin_lock+0x30/0x40 [ 30.662574][ C2] __get_task_comm+0x27/0x70 [ 30.662806][ C2] ref_tracker_alloc+0x2ee/0x490 [ 30.663036][ C2] netdev_get_by_index+0x5e/0x80 [ 30.663267][ C2] fib6_nh_init+0x3d8/0x1580 [ 30.663499][ C2] ip6_route_info_create+0xf18/0x17d0 [ 30.663726][ C2] ip6_route_add+0x1c/0x140 [ 30.663953][ C2] addrconf_prefix_route+0x2a6/0x430 [ 30.664189][ C2] addrconf_permanent_addr+0x32f/0x670 [ 30.664417][ C2] addrconf_notify+0x749/0xd60 [ 30.664645][ C2] notifier_call_chain+0xcd/0x150 [ 30.664873][ C2] __dev_notify_flags+0xe6/0x250 [ 30.665106][ C2] dev_change_flags+0xec/0x160 [ 30.665332][ C2] do_setlink+0x7d6/0x21e0 [ 30.665567][ C2] __rtnl_newlink+0xaa7/0xd80 [ 30.665801][ C2] rtnl_newlink+0x63/0xa0 [ 30.666034][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.666264][ C2] netlink_rcv_skb+0x130/0x360 [ 30.666498][ C2] netlink_unicast+0x449/0x710 [ 30.666727][ C2] netlink_sendmsg+0x723/0xbe0 [ 30.666957][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 30.667188][ C2] ___sys_sendmsg+0xee/0x170 [ 30.667416][ C2] __sys_sendmsg+0xcd/0x170 [ 30.667645][ C2] do_syscall_64+0xc6/0x1e0 [ 30.667874][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.668164][ C2] [ 30.668280][ C2] -> (&ndev->lock){++-.}-{2:2} { [ 30.668517][ C2] HARDIRQ-ON-W at: [ 30.668691][ C2] __lock_acquire+0x797/0x1570 [ 30.668982][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.669273][ C2] _raw_write_lock_bh+0x38/0x50 [ 30.669562][ C2] addrconf_permanent_addr+0x6e/0x670 [ 30.669854][ C2] addrconf_notify+0x749/0xd60 [ 30.670143][ C2] notifier_call_chain+0xcd/0x150 [ 30.670430][ C2] __dev_notify_flags+0xe6/0x250 [ 30.670719][ C2] dev_change_flags+0xec/0x160 [ 30.671007][ C2] do_setlink+0x7d6/0x21e0 [ 30.671293][ C2] __rtnl_newlink+0xaa7/0xd80 [ 30.671582][ C2] rtnl_newlink+0x63/0xa0 [ 30.671873][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.672162][ C2] netlink_rcv_skb+0x130/0x360 [ 30.672451][ C2] netlink_unicast+0x449/0x710 [ 30.672737][ C2] netlink_sendmsg+0x723/0xbe0 [ 30.673032][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 30.673315][ C2] ___sys_sendmsg+0xee/0x170 [ 30.673600][ C2] __sys_sendmsg+0xcd/0x170 [ 30.673891][ C2] do_syscall_64+0xc6/0x1e0 [ 30.674180][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.674535][ C2] HARDIRQ-ON-R at: [ 30.674706][ C2] __lock_acquire+0x797/0x1570 [ 30.674996][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.675281][ C2] _raw_read_lock_bh+0x44/0x80 [ 30.675577][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.675867][ C2] inet6_fill_link_af+0x5e/0xe0 [ 30.676153][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.676437][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.676721][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.677068][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 30.677364][ C2] register_netdevice+0x1177/0x1690 [ 30.677648][ C2] register_netdev+0x20/0x40 [ 30.678054][ C2] vti6_init_net+0x25d/0x380 [ 30.678324][ C2] ops_init+0x9b/0x560 [ 30.678554][ C2] register_pernet_operations+0x2db/0x710 [ 30.678897][ C2] register_pernet_device+0x2a/0x60 [ 30.679327][ C2] vti6_tunnel_init+0x18/0x110 [ 30.679612][ C2] do_one_initcall+0x8d/0x1e0 [ 30.679896][ C2] do_initcalls+0x1b2/0x3e0 [ 30.680336][ C2] kernel_init_freeable+0x232/0x310 [ 30.680625][ C2] kernel_init+0x20/0x200 [ 30.680910][ C2] ret_from_fork+0x31/0x70 [ 30.681191][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.681483][ C2] IN-SOFTIRQ-W at: [ 30.681656][ C2] __lock_acquire+0x797/0x1570 [ 30.681945][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.682387][ C2] _raw_write_lock+0x30/0x40 [ 30.682636][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.682920][ C2] call_timer_fn+0x13b/0x230 [ 30.683205][ C2] __run_timers+0x545/0x810 [ 30.683602][ C2] timer_expire_remote+0x9b/0xe0 [ 30.683887][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.684173][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.684610][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.684910][ C2] __do_softirq+0x1f8/0x5df [ 30.685210][ C2] irq_exit_rcu+0x97/0xc0 [ 30.685522][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.686006][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.686363][ C2] lock_acquire.part.0+0x119/0x330 [ 30.686663][ C2] _raw_spin_lock+0x30/0x40 [ 30.687073][ C2] close_pdeo.part.0+0xed/0x300 [ 30.687357][ C2] close_pdeo+0x149/0x170 [ 30.687645][ C2] proc_reg_release+0x16e/0x1e0 [ 30.688072][ C2] __fput+0x1fc/0xa80 [ 30.688305][ C2] __x64_sys_close+0x7c/0xd0 [ 30.688595][ C2] do_syscall_64+0xc6/0x1e0 [ 30.688884][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.689401][ C2] INITIAL USE at: [ 30.689576][ C2] __lock_acquire+0x797/0x1570 [ 30.689881][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.690322][ C2] _raw_write_lock_bh+0x38/0x50 [ 30.690573][ C2] addrconf_permanent_addr+0x6e/0x670 [ 30.690873][ C2] addrconf_notify+0x749/0xd60 [ 30.691172][ C2] notifier_call_chain+0xcd/0x150 [ 30.691579][ C2] __dev_notify_flags+0xe6/0x250 [ 30.691888][ C2] dev_change_flags+0xec/0x160 [ 30.692187][ C2] do_setlink+0x7d6/0x21e0 [ 30.692628][ C2] __rtnl_newlink+0xaa7/0xd80 [ 30.692931][ C2] rtnl_newlink+0x63/0xa0 [ 30.693224][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.693684][ C2] netlink_rcv_skb+0x130/0x360 [ 30.693953][ C2] netlink_unicast+0x449/0x710 [ 30.694254][ C2] netlink_sendmsg+0x723/0xbe0 [ 30.694555][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 30.694939][ C2] ___sys_sendmsg+0xee/0x170 [ 30.695244][ C2] __sys_sendmsg+0xcd/0x170 [ 30.695552][ C2] do_syscall_64+0xc6/0x1e0 [ 30.695995][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.696303][ C2] INITIAL READ USE at: [ 30.696482][ C2] __lock_acquire+0x797/0x1570 [ 30.696772][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.697209][ C2] _raw_read_lock_bh+0x44/0x80 [ 30.697512][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.697868][ C2] inet6_fill_link_af+0x5e/0xe0 [ 30.698312][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.698596][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.698955][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.699415][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 30.699718][ C2] register_netdevice+0x1177/0x1690 [ 30.700074][ C2] register_netdev+0x20/0x40 [ 30.700515][ C2] vti6_init_net+0x25d/0x380 [ 30.700768][ C2] ops_init+0x9b/0x560 [ 30.701067][ C2] register_pernet_operations+0x2db/0x710 [ 30.701542][ C2] register_pernet_device+0x2a/0x60 [ 30.701890][ C2] vti6_tunnel_init+0x18/0x110 [ 30.702189][ C2] do_one_initcall+0x8d/0x1e0 [ 30.702493][ C2] do_initcalls+0x1b2/0x3e0 [ 30.702906][ C2] kernel_init_freeable+0x232/0x310 [ 30.703265][ C2] kernel_init+0x20/0x200 [ 30.703567][ C2] ret_from_fork+0x31/0x70 [ 30.703972][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.704268][ C2] } [ 30.704392][ C2] ... key at: [] __key.37+0x0/0x40 [ 30.704748][ C2] ... acquired at: [ 30.705062][ C2] mark_lock+0x28d/0x3e0 [ 30.705301][ C2] mark_usage+0xd9/0x2a0 [ 30.705544][ C2] __lock_acquire+0x797/0x1570 [ 30.705781][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.706168][ C2] _raw_write_lock+0x30/0x40 [ 30.706370][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.706606][ C2] call_timer_fn+0x13b/0x230 [ 30.706852][ C2] __run_timers+0x545/0x810 [ 30.707208][ C2] timer_expire_remote+0x9b/0xe0 [ 30.707428][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.707667][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.707903][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.708139][ C2] __do_softirq+0x1f8/0x5df [ 30.708533][ C2] irq_exit_rcu+0x97/0xc0 [ 30.708773][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.709068][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.709360][ C2] lock_acquire.part.0+0x119/0x330 [ 30.709598][ C2] _raw_spin_lock+0x30/0x40 [ 30.709834][ C2] close_pdeo.part.0+0xed/0x300 [ 30.710073][ C2] close_pdeo+0x149/0x170 [ 30.710310][ C2] proc_reg_release+0x16e/0x1e0 [ 30.710691][ C2] __fput+0x1fc/0xa80 [ 30.710872][ C2] __x64_sys_close+0x7c/0xd0 [ 30.711112][ C2] do_syscall_64+0xc6/0x1e0 [ 30.711349][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.711787][ C2] [ 30.711892][ C2] [ 30.711892][ C2] stack backtrace: [ 30.712180][ C2] CPU: 2 PID: 316 Comm: ip Not tainted 6.9.0-rc1-virtme #1 [ 30.712538][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 30.713169][ C2] Call Trace: [ 30.713358][ C2] [ 30.713487][ C2] dump_stack_lvl+0x82/0xd0 [ 30.713731][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 30.714113][ C2] ? kernel_text_address+0xce/0xe0 [ 30.714312][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 30.714609][ C2] ? __pfx_usage_skip+0x10/0x10 [ 30.714964][ C2] ? __pfx_usage_match+0x10/0x10 [ 30.715193][ C2] ? arch_stack_walk+0xa2/0xf0 [ 30.715445][ C2] mark_lock_irq+0x4cd/0xa10 [ 30.715687][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 30.715926][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 30.716309][ C2] ? save_trace+0x8f/0x5b0 [ 30.716551][ C2] mark_lock+0x28d/0x3e0 [ 30.716735][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 30.716973][ C2] mark_usage+0xd9/0x2a0 [ 30.717309][ C2] __lock_acquire+0x797/0x1570 [ 30.717556][ C2] ? __pfx_validate_chain+0x10/0x10 [ 30.717796][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.718034][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.718273][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.718517][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.718756][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 30.718997][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.719232][ C2] ? lock_acquire+0x32/0xc0 [ 30.719612][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.719830][ C2] _raw_write_lock+0x30/0x40 [ 30.720075][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.720311][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.720653][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.720892][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.721126][ C2] ? call_timer_fn+0xe8/0x230 [ 30.721366][ C2] ? lock_acquire+0x32/0xc0 [ 30.721760][ C2] ? call_timer_fn+0xe8/0x230 [ 30.721956][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.722194][ C2] call_timer_fn+0x13b/0x230 [ 30.722423][ C2] ? call_timer_fn+0xe8/0x230 [ 30.722661][ C2] ? call_timer_fn+0xe8/0x230 [ 30.723038][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 30.723275][ C2] ? hlock_class+0x4e/0x130 [ 30.723516][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.723754][ C2] __run_timers+0x545/0x810 [ 30.724127][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.724352][ C2] ? __pfx___run_timers+0x10/0x10 [ 30.724587][ C2] ? __lock_release+0x103/0x460 [ 30.724823][ C2] ? do_raw_spin_lock+0x131/0x270 [ 30.725219][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.725462][ C2] ? lock_acquire+0x32/0xc0 [ 30.725700][ C2] ? timer_expire_remote+0x93/0xe0 [ 30.725941][ C2] timer_expire_remote+0x9b/0xe0 [ 30.726292][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.726516][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 30.726810][ C2] ? hlock_class+0x4e/0x130 [ 30.727043][ C2] ? mark_lock+0x38/0x3e0 [ 30.727224][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.727601][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.727841][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.728075][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 30.728314][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.728697][ C2] __do_softirq+0x1f8/0x5df [ 30.728918][ C2] irq_exit_rcu+0x97/0xc0 [ 30.729098][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.729336][ C2] [ 30.729459][ C2] [ 30.729696][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.729978][ C2] RIP: 0010:lock_acquire.part.0+0x119/0x330 [ 30.730289][ C2] Code: ff 48 83 c4 28 65 0f c1 05 54 17 d3 70 83 f8 01 0f 85 b5 01 00 00 9c 58 f6 c4 02 0f 85 be 01 00 00 48 85 ed 0f 85 9b 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 [ 30.731145][ C2] RSP: 0018:ffffc90000e2fc60 EFLAGS: 00000206 [ 30.731419][ C2] RAX: 0000000000000046 RBX: 1ffff920001c5f8f RCX: 0000000000000001 [ 30.731885][ C2] RDX: 1ffff11000ae25a5 RSI: 0000000000000008 RDI: ffff888005712d52 [ 30.732242][ C2] RBP: 0000000000000200 R08: ffffffff94decff0 R09: ffff888005712d30 [ 30.732602][ C2] R10: ffffffff94e1956f R11: ffffc90000e2f981 R12: ffff888002807178 [ 30.733109][ C2] R13: ffff888002807160 R14: ffff8880045751d8 R15: ffff888004595380 [ 30.733480][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.733719][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 30.733959][ C2] ? close_pdeo.part.0+0xed/0x300 [ 30.734325][ C2] ? lock_acquire+0x32/0xc0 [ 30.734555][ C2] ? close_pdeo.part.0+0xed/0x300 [ 30.734793][ C2] ? __pfx_single_release+0x10/0x10 [ 30.735043][ C2] ? __pfx_single_release+0x10/0x10 [ 30.735389][ C2] _raw_spin_lock+0x30/0x40 [ 30.735630][ C2] ? close_pdeo.part.0+0xed/0x300 [ 30.735868][ C2] close_pdeo.part.0+0xed/0x300 [ 30.736105][ C2] ? lock_acquire.part.0+0xeb/0x330 [ 30.736476][ C2] close_pdeo+0x149/0x170 [ 30.736619][ C2] ? __pfx_close_pdeo+0x10/0x10 [ 30.736846][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.737083][ C2] ? do_raw_spin_lock+0x131/0x270 [ 30.737320][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.737664][ C2] ? lock_acquire+0x32/0xc0 [ 30.737902][ C2] ? proc_reg_release+0x109/0x1e0 [ 30.738140][ C2] proc_reg_release+0x16e/0x1e0 [ 30.738383][ C2] __fput+0x1fc/0xa80 [ 30.738709][ C2] __x64_sys_close+0x7c/0xd0 [ 30.738950][ C2] do_syscall_64+0xc6/0x1e0 [ 30.739190][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.739486][ C2] RIP: 0033:0x7f981b27737b [ 30.739886][ C2] Code: c3 66 0f 1f 44 00 00 48 8b 15 81 5a 0b 00 f7 d8 64 89 02 b8 ff ff ff ff eb bc 0f 1f 44 00 00 f3 0f 1e fa b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 51 5a 0b 00 f7 d8 [ 30.740670][ C2] RSP: 002b:00007ffde2d1e018 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 30.741134][ C2] RAX: ffffffffffffffda RBX: 000000002fb022a0 RCX: 00007f981b27737b [ 30.741492][ C2] RDX: 00007f981b3299c0 RSI: 00000000fbada418 RDI: 0000000000000005 [ 30.741856][ C2] RBP: 0000000000000000 R08: 000000002fb02480 R09: 0000000000000077 [ 30.742347][ C2] R10: 000000000000005d R11: 0000000000000202 R12: 00007f981b32a5c0 [ 30.742701][ C2] R13: 0000000000000000 R14: 00007f981b38b2a7 R15: 0000000000000000 [ 30.743213][ C2]