[ 34.450894][ C2] [ 34.451006][ C2] ======================================================== [ 34.451273][ C2] WARNING: possible irq lock inversion dependency detected [ 34.451534][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 34.451731][ C2] -------------------------------------------------------- [ 34.451991][ C2] custom_multipat/346 just changed the state of lock: [ 34.452196][ C2] ffff888002836d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 34.452534][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 34.452829][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 34.452837][ C2] [ 34.452837][ C2] [ 34.452837][ C2] and interrupts could create inverse lock ordering between them. [ 34.452837][ C2] [ 34.453465][ C2] [ 34.453465][ C2] other info that might help us debug this: [ 34.453749][ C2] Possible interrupt unsafe locking scenario: [ 34.453749][ C2] [ 34.454014][ C2] CPU0 CPU1 [ 34.454180][ C2] ---- ---- [ 34.454358][ C2] lock(&p->alloc_lock); [ 34.454486][ C2] local_irq_disable(); [ 34.454720][ C2] lock(&ndev->lock); [ 34.454945][ C2] lock(&p->alloc_lock); [ 34.455156][ C2] [ 34.455287][ C2] lock(&ndev->lock); [ 34.455416][ C2] [ 34.455416][ C2] *** DEADLOCK *** [ 34.455416][ C2] [ 34.455674][ C2] 1 lock held by custom_multipat/346: [ 34.455858][ C2] #0: ffffc90000230d68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 34.456163][ C2] [ 34.456163][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 34.456459][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 34.456643][ C2] HARDIRQ-ON-W at: [ 34.456765][ C2] __lock_acquire+0x797/0x1570 [ 34.456997][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.457212][ C2] _raw_spin_lock+0x30/0x40 [ 34.457417][ C2] set_mems_allowed+0x1d/0x210 [ 34.457655][ C2] kernel_init_freeable+0x72/0x310 [ 34.457883][ C2] kernel_init+0x20/0x200 [ 34.458087][ C2] ret_from_fork+0x31/0x70 [ 34.458310][ C2] ret_from_fork_asm+0x1a/0x30 [ 34.458523][ C2] SOFTIRQ-ON-W at: [ 34.458682][ C2] __lock_acquire+0x797/0x1570 [ 34.458911][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.459143][ C2] _raw_spin_lock+0x30/0x40 [ 34.459358][ C2] set_mems_allowed+0x1d/0x210 [ 34.459569][ C2] kernel_init_freeable+0x72/0x310 [ 34.459784][ C2] kernel_init+0x20/0x200 [ 34.460002][ C2] ret_from_fork+0x31/0x70 [ 34.460205][ C2] ret_from_fork_asm+0x1a/0x30 [ 34.460422][ C2] INITIAL USE at: [ 34.460545][ C2] __lock_acquire+0x797/0x1570 [ 34.460771][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.460987][ C2] _raw_spin_lock+0x30/0x40 [ 34.461190][ C2] set_mems_allowed+0x1d/0x210 [ 34.461405][ C2] kernel_init_freeable+0x72/0x310 [ 34.461647][ C2] kernel_init+0x20/0x200 [ 34.461899][ C2] ret_from_fork+0x31/0x70 [ 34.462117][ C2] ret_from_fork_asm+0x1a/0x30 [ 34.462317][ C2] } [ 34.462400][ C2] ... key at: [] __key.387+0x0/0x40 [ 34.462656][ C2] ... acquired at: [ 34.462776][ C2] __lock_acquire+0xaf0/0x1570 [ 34.462946][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.463108][ C2] _raw_spin_lock+0x30/0x40 [ 34.463289][ C2] __get_task_comm+0x27/0x70 [ 34.463453][ C2] ref_tracker_alloc+0x2ee/0x490 [ 34.463640][ C2] netdev_get_by_index+0x5e/0x80 [ 34.463803][ C2] fib6_nh_init+0x3d8/0x15b0 [ 34.463980][ C2] ip6_route_info_create+0xf18/0x17d0 [ 34.464141][ C2] addrconf_f6i_alloc+0x265/0x560 [ 34.464320][ C2] __ipv6_dev_ac_inc+0x25f/0xb10 [ 34.464499][ C2] addrconf_join_anycast+0x1c0/0x220 [ 34.464680][ C2] dev_forward_change+0x2a6/0x7b0 [ 34.464866][ C2] addrconf_fixup_forwarding+0x23f/0x460 [ 34.465082][ C2] addrconf_sysctl_forward+0x212/0x2b0 [ 34.465273][ C2] proc_sys_call_handler+0x403/0x5e0 [ 34.465446][ C2] vfs_write+0x9e5/0x10a0 [ 34.465634][ C2] ksys_write+0xf5/0x1e0 [ 34.465820][ C2] do_syscall_64+0xc6/0x1e0 [ 34.466013][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.466228][ C2] [ 34.466312][ C2] -> (&ndev->lock){++-.}-{2:2} { [ 34.466493][ C2] HARDIRQ-ON-W at: [ 34.466630][ C2] __lock_acquire+0x797/0x1570 [ 34.466858][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.467074][ C2] _raw_write_lock_bh+0x38/0x50 [ 34.467282][ C2] addrconf_permanent_addr+0x6e/0x670 [ 34.467511][ C2] addrconf_notify+0x749/0xd60 [ 34.467762][ C2] notifier_call_chain+0xcd/0x150 [ 34.468025][ C2] __dev_notify_flags+0xe6/0x250 [ 34.468296][ C2] dev_change_flags+0xec/0x160 [ 34.468597][ C2] do_setlink+0x7d6/0x21e0 [ 34.468820][ C2] __rtnl_newlink+0xaa7/0xd80 [ 34.469047][ C2] rtnl_newlink+0x63/0xa0 [ 34.469282][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.469489][ C2] netlink_rcv_skb+0x130/0x360 [ 34.469768][ C2] netlink_unicast+0x449/0x710 [ 34.469975][ C2] netlink_sendmsg+0x723/0xbe0 [ 34.470201][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 34.470416][ C2] ___sys_sendmsg+0xee/0x170 [ 34.470652][ C2] __sys_sendmsg+0xcd/0x170 [ 34.470852][ C2] do_syscall_64+0xc6/0x1e0 [ 34.471053][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.471314][ C2] HARDIRQ-ON-R at: [ 34.471435][ C2] __lock_acquire+0x797/0x1570 [ 34.471674][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.471877][ C2] _raw_read_lock_bh+0x44/0x80 [ 34.472115][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.472376][ C2] inet6_fill_link_af+0x5e/0xe0 [ 34.472579][ C2] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.472804][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.473022][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.473263][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 34.473473][ C2] register_netdevice+0x1177/0x1690 [ 34.473692][ C2] register_netdev+0x20/0x40 [ 34.473911][ C2] sit_init_net+0x250/0x4f0 [ 34.474113][ C2] ops_init+0x9b/0x560 [ 34.474279][ C2] register_pernet_operations+0x2db/0x710 [ 34.474518][ C2] register_pernet_device+0x2a/0x60 [ 34.474752][ C2] sit_init+0x23/0xe0 [ 34.474917][ C2] do_one_initcall+0x8d/0x1e0 [ 34.475135][ C2] do_initcalls+0x1b2/0x3e0 [ 34.475351][ C2] kernel_init_freeable+0x232/0x310 [ 34.475550][ C2] kernel_init+0x20/0x200 [ 34.475788][ C2] ret_from_fork+0x31/0x70 [ 34.476019][ C2] ret_from_fork_asm+0x1a/0x30 [ 34.476221][ C2] IN-SOFTIRQ-W at: [ 34.476355][ C2] __lock_acquire+0x797/0x1570 [ 34.476557][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.476786][ C2] _raw_write_lock+0x30/0x40 [ 34.476996][ C2] addrconf_rs_timer+0xa9/0x730 [ 34.477206][ C2] call_timer_fn+0x13b/0x230 [ 34.477437][ C2] __run_timers+0x545/0x810 [ 34.477674][ C2] run_timer_softirq+0xe8/0x1b0 [ 34.477930][ C2] __do_softirq+0x1f8/0x5df [ 34.478151][ C2] irq_exit_rcu+0x97/0xc0 [ 34.478362][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.478628][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.478868][ C2] orc_find.part.0+0x3f/0x370 [ 34.479072][ C2] unwind_next_frame+0x1d2/0x1d00 [ 34.479280][ C2] arch_stack_walk+0x8c/0xf0 [ 34.479486][ C2] stack_trace_save+0x94/0xd0 [ 34.479721][ C2] set_track_prepare+0x79/0xd0 [ 34.479942][ C2] __alloc_object+0x2bf/0x6f0 [ 34.480168][ C2] __create_object+0x22/0xb0 [ 34.480395][ C2] __kmalloc+0x2ce/0x3c0 [ 34.480668][ C2] p9_fcall_init+0x7d/0x1b0 [ 34.480976][ C2] p9_tag_alloc+0x138/0x700 [ 34.481224][ C2] p9_client_prepare_req+0xe6/0x290 [ 34.481451][ C2] p9_client_rpc+0x18d/0x930 [ 34.481671][ C2] p9_client_clunk+0x74/0xe0 [ 34.481895][ C2] v9fs_dentry_release+0xb9/0x140 [ 34.482096][ C2] __dentry_kill+0x1d9/0x4f0 [ 34.482313][ C2] dput.part.0+0x333/0x6c0 [ 34.482514][ C2] walk_component+0x199/0x4f0 [ 34.482741][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.482998][ C2] path_lookupat+0x72/0x660 [ 34.483212][ C2] filename_lookup+0x19e/0x420 [ 34.483425][ C2] vfs_statx+0xe8/0x460 [ 34.483646][ C2] vfs_fstatat+0x93/0xc0 [ 34.483885][ C2] __do_sys_newfstatat+0x6b/0xc0 [ 34.484102][ C2] do_syscall_64+0xc6/0x1e0 [ 34.484305][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.484559][ C2] INITIAL USE at: [ 34.484702][ C2] __lock_acquire+0x797/0x1570 [ 34.484964][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.485165][ C2] _raw_write_lock_bh+0x38/0x50 [ 34.485377][ C2] addrconf_permanent_addr+0x6e/0x670 [ 34.485787][ C2] addrconf_notify+0x749/0xd60 [ 34.486054][ C2] notifier_call_chain+0xcd/0x150 [ 34.486276][ C2] __dev_notify_flags+0xe6/0x250 [ 34.486498][ C2] dev_change_flags+0xec/0x160 [ 34.486832][ C2] do_setlink+0x7d6/0x21e0 [ 34.487031][ C2] __rtnl_newlink+0xaa7/0xd80 [ 34.487232][ C2] rtnl_newlink+0x63/0xa0 [ 34.487536][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.487750][ C2] netlink_rcv_skb+0x130/0x360 [ 34.487966][ C2] netlink_unicast+0x449/0x710 [ 34.488166][ C2] netlink_sendmsg+0x723/0xbe0 [ 34.488483][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 34.488713][ C2] ___sys_sendmsg+0xee/0x170 [ 34.488928][ C2] __sys_sendmsg+0xcd/0x170 [ 34.489243][ C2] do_syscall_64+0xc6/0x1e0 [ 34.489447][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.489698][ C2] INITIAL READ USE at: [ 34.489820][ C2] __lock_acquire+0x797/0x1570 [ 34.490143][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.490355][ C2] _raw_read_lock_bh+0x44/0x80 [ 34.490555][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.490934][ C2] inet6_fill_link_af+0x5e/0xe0 [ 34.491137][ C2] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.491348][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.491721][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.491979][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 34.492195][ C2] register_netdevice+0x1177/0x1690 [ 34.492556][ C2] register_netdev+0x20/0x40 [ 34.492776][ C2] sit_init_net+0x250/0x4f0 [ 34.492975][ C2] ops_init+0x9b/0x560 [ 34.493279][ C2] register_pernet_operations+0x2db/0x710 [ 34.493531][ C2] register_pernet_device+0x2a/0x60 [ 34.493849][ C2] sit_init+0x23/0xe0 [ 34.494172][ C2] do_one_initcall+0x8d/0x1e0 [ 34.494372][ C2] do_initcalls+0x1b2/0x3e0 [ 34.494600][ C2] kernel_init_freeable+0x232/0x310 [ 34.494874][ C2] kernel_init+0x20/0x200 [ 34.495197][ C2] ret_from_fork+0x31/0x70 [ 34.495416][ C2] ret_from_fork_asm+0x1a/0x30 [ 34.495642][ C2] } [ 34.495732][ C2] ... key at: [] __key.37+0x0/0x40 [ 34.496103][ C2] ... acquired at: [ 34.496221][ C2] mark_lock+0x28d/0x3e0 [ 34.496392][ C2] mark_usage+0xd9/0x2a0 [ 34.496551][ C2] __lock_acquire+0x797/0x1570 [ 34.496728][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.496906][ C2] _raw_write_lock+0x30/0x40 [ 34.497088][ C2] addrconf_rs_timer+0xa9/0x730 [ 34.497267][ C2] call_timer_fn+0x13b/0x230 [ 34.497491][ C2] __run_timers+0x545/0x810 [ 34.497713][ C2] run_timer_softirq+0xe8/0x1b0 [ 34.497981][ C2] __do_softirq+0x1f8/0x5df [ 34.498247][ C2] irq_exit_rcu+0x97/0xc0 [ 34.498525][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.498853][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.499142][ C2] orc_find.part.0+0x3f/0x370 [ 34.499309][ C2] unwind_next_frame+0x1d2/0x1d00 [ 34.499572][ C2] arch_stack_walk+0x8c/0xf0 [ 34.499743][ C2] stack_trace_save+0x94/0xd0 [ 34.499905][ C2] set_track_prepare+0x79/0xd0 [ 34.500076][ C2] __alloc_object+0x2bf/0x6f0 [ 34.500349][ C2] __create_object+0x22/0xb0 [ 34.500515][ C2] __kmalloc+0x2ce/0x3c0 [ 34.500706][ C2] p9_fcall_init+0x7d/0x1b0 [ 34.500866][ C2] p9_tag_alloc+0x138/0x700 [ 34.501146][ C2] p9_client_prepare_req+0xe6/0x290 [ 34.501322][ C2] p9_client_rpc+0x18d/0x930 [ 34.501482][ C2] p9_client_clunk+0x74/0xe0 [ 34.501677][ C2] v9fs_dentry_release+0xb9/0x140 [ 34.501904][ C2] __dentry_kill+0x1d9/0x4f0 [ 34.502167][ C2] dput.part.0+0x333/0x6c0 [ 34.502328][ C2] walk_component+0x199/0x4f0 [ 34.502488][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.502708][ C2] path_lookupat+0x72/0x660 [ 34.502996][ C2] filename_lookup+0x19e/0x420 [ 34.503154][ C2] vfs_statx+0xe8/0x460 [ 34.503282][ C2] vfs_fstatat+0x93/0xc0 [ 34.503451][ C2] __do_sys_newfstatat+0x6b/0xc0 [ 34.503624][ C2] do_syscall_64+0xc6/0x1e0 [ 34.503782][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.503979][ C2] [ 34.504059][ C2] [ 34.504059][ C2] stack backtrace: [ 34.504262][ C2] CPU: 2 PID: 346 Comm: custom_multipat Not tainted 6.9.0-rc1-virtme #1 [ 34.504516][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.504943][ C2] Call Trace: [ 34.505247][ C2] [ 34.505335][ C2] dump_stack_lvl+0x82/0xd0 [ 34.505512][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 34.505735][ C2] ? kernel_text_address+0xce/0xe0 [ 34.505922][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 34.506236][ C2] ? __pfx_usage_skip+0x10/0x10 [ 34.506395][ C2] ? __pfx_usage_match+0x10/0x10 [ 34.506553][ C2] ? arch_stack_walk+0xa2/0xf0 [ 34.506725][ C2] mark_lock_irq+0x4cd/0xa10 [ 34.507015][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 34.507179][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 34.507356][ C2] ? save_trace+0x8f/0x5b0 [ 34.507517][ C2] mark_lock+0x28d/0x3e0 [ 34.507664][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 34.507825][ C2] mark_usage+0xd9/0x2a0 [ 34.507958][ C2] __lock_acquire+0x797/0x1570 [ 34.508119][ C2] ? __pfx_validate_chain+0x10/0x10 [ 34.508306][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.508473][ C2] lock_acquire.part.0+0xeb/0x330 [ 34.508663][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 34.508824][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.508997][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 34.509157][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 34.509330][ C2] ? lock_acquire+0x32/0xc0 [ 34.509489][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 34.509697][ C2] _raw_write_lock+0x30/0x40 [ 34.509998][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 34.510157][ C2] addrconf_rs_timer+0xa9/0x730 [ 34.510320][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.510481][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.510651][ C2] ? call_timer_fn+0xe8/0x230 [ 34.510811][ C2] ? lock_acquire+0x32/0xc0 [ 34.510969][ C2] ? call_timer_fn+0xe8/0x230 [ 34.511128][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.511286][ C2] call_timer_fn+0x13b/0x230 [ 34.511448][ C2] ? call_timer_fn+0xe8/0x230 [ 34.511618][ C2] ? call_timer_fn+0xe8/0x230 [ 34.511803][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 34.511964][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 34.512139][ C2] __run_timers+0x545/0x810 [ 34.512300][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.512475][ C2] ? __pfx___run_timers+0x10/0x10 [ 34.512657][ C2] ? do_raw_spin_lock+0x131/0x270 [ 34.512974][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 34.513139][ C2] ? lock_acquire+0x32/0xc0 [ 34.513314][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 34.513476][ C2] run_timer_softirq+0xe8/0x1b0 [ 34.513688][ C2] __do_softirq+0x1f8/0x5df [ 34.513909][ C2] irq_exit_rcu+0x97/0xc0 [ 34.514043][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.514203][ C2] [ 34.514297][ C2] [ 34.514381][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.514592][ C2] RIP: 0010:orc_find.part.0+0x3f/0x370 [ 34.514777][ C2] Code: 00 00 fc ff df 48 83 ec 10 49 81 fc 00 00 a0 aa 0f 82 f3 00 00 00 49 81 fc 00 00 80 ad 0f 83 e6 00 00 00 44 8b 2d d9 56 52 03 <4c> 89 e3 48 81 eb 00 00 a0 aa 48 c1 eb 08 41 8d 45 ff 89 dd 39 c3 [ 34.515409][ C2] RSP: 0018:ffffc9000094f160 EFLAGS: 00000287 [ 34.515649][ C2] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffc90000950001 [ 34.515907][ C2] RDX: 1ffff92000129e5f RSI: ffffffffab8e1319 RDI: ffffffffab8e1318 [ 34.516291][ C2] RBP: ffffc9000094f2f8 R08: ffffc9000094f2e0 R09: 1ffff92000129e3d [ 34.516551][ C2] R10: ffffc9000094f2a0 R11: ffffc9000094f2e1 R12: ffffffffab8e1318 [ 34.516816][ C2] R13: 000000000002e001 R14: 0000000000000000 R15: ffffffffad3b52ad [ 34.517266][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.517493][ C2] ? v9fs_dentry_release+0xb8/0x140 [ 34.517771][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 34.517961][ C2] ? v9fs_dentry_release+0xb8/0x140 [ 34.518137][ C2] ? arch_stack_walk+0x68/0xf0 [ 34.518303][ C2] unwind_next_frame+0x1d2/0x1d00 [ 34.518472][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 34.518669][ C2] ? __pfx_unwind_next_frame+0x10/0x10 [ 34.518863][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 34.519028][ C2] ? kernel_text_address+0x17/0xe0 [ 34.519191][ C2] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 34.519391][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.519550][ C2] arch_stack_walk+0x8c/0xf0 [ 34.519723][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 34.519887][ C2] stack_trace_save+0x94/0xd0 [ 34.520046][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 34.520311][ C2] ? ___slab_alloc+0xb70/0x10a0 [ 34.520490][ C2] ? fs_reclaim_acquire+0xb3/0x170 [ 34.520662][ C2] ? __alloc_object+0x39/0x6f0 [ 34.520854][ C2] ? __pfx___lock_release+0x10/0x10 [ 34.521148][ C2] set_track_prepare+0x79/0xd0 [ 34.521324][ C2] ? __pfx_set_track_prepare+0x10/0x10 [ 34.521519][ C2] ? __kmalloc+0x2ce/0x3c0 [ 34.521770][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.522219][ C2] ? p9_tag_alloc+0x138/0x700 [ 34.522480][ C2] ? p9_client_prepare_req+0xe6/0x290 [ 34.522681][ C2] ? p9_client_rpc+0x18d/0x930 [ 34.522841][ C2] ? p9_client_clunk+0x74/0xe0 [ 34.523016][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 34.523280][ C2] ? kasan_save_track+0x14/0x30 [ 34.523456][ C2] ? lockdep_init_map_type+0x2cb/0x7c0 [ 34.523660][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.523829][ C2] ? __raw_spin_lock_init+0x3f/0x110 [ 34.524110][ C2] __alloc_object+0x2bf/0x6f0 [ 34.524284][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.524448][ C2] __create_object+0x22/0xb0 [ 34.524637][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 34.524947][ C2] __kmalloc+0x2ce/0x3c0 [ 34.525081][ C2] p9_fcall_init+0x7d/0x1b0 [ 34.525248][ C2] p9_tag_alloc+0x138/0x700 [ 34.525444][ C2] ? __pfx_p9_tag_alloc+0x10/0x10 [ 34.525618][ C2] ? validate_chain+0x130/0x9b0 [ 34.525805][ C2] ? hlock_class+0x4e/0x130 [ 34.525981][ C2] p9_client_prepare_req+0xe6/0x290 [ 34.526145][ C2] ? hlock_class+0x4e/0x130 [ 34.526323][ C2] ? __pfx_p9_client_prepare_req+0x10/0x10 [ 34.526531][ C2] ? __lock_acquire+0xaf0/0x1570 [ 34.526713][ C2] p9_client_rpc+0x18d/0x930 [ 34.526873][ C2] ? __pfx_p9_client_rpc+0x10/0x10 [ 34.527046][ C2] ? __lock_release+0x103/0x460 [ 34.527205][ C2] ? list_lru_add+0x76/0x250 [ 34.527375][ C2] ? __pfx___lock_release+0x10/0x10 [ 34.527535][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.527760][ C2] ? find_held_lock+0x2c/0x110 [ 34.528025][ C2] ? __lock_release+0x103/0x460 [ 34.528185][ C2] ? __pfx___lock_release+0x10/0x10 [ 34.528346][ C2] p9_client_clunk+0x74/0xe0 [ 34.528524][ C2] v9fs_dentry_release+0xb9/0x140 [ 34.528826][ C2] __dentry_kill+0x1d9/0x4f0 [ 34.528993][ C2] ? __pfx_kfree_link+0x10/0x10 [ 34.529170][ C2] dput.part.0+0x333/0x6c0 [ 34.529328][ C2] walk_component+0x199/0x4f0 [ 34.529509][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.529851][ C2] ? __pfx_link_path_walk.part.0.constprop.0+0x10/0x10 [ 34.530064][ C2] ? validate_chain+0x130/0x9b0 [ 34.530228][ C2] ? hlock_class+0x4e/0x130 [ 34.530642][ C2] path_lookupat+0x72/0x660 [ 34.530805][ C2] filename_lookup+0x19e/0x420 [ 34.530984][ C2] ? __pfx_filename_lookup+0x10/0x10 [ 34.531152][ C2] ? __pfx_kfree_link+0x10/0x10 [ 34.531313][ C2] ? find_held_lock+0x2c/0x110 [ 34.531580][ C2] ? __lock_release+0x103/0x460 [ 34.531751][ C2] ? __might_fault+0x11b/0x170 [ 34.531928][ C2] ? __pfx___lock_release+0x10/0x10 [ 34.532087][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 34.532369][ C2] vfs_statx+0xe8/0x460 [ 34.532515][ C2] ? __pfx_vfs_statx+0x10/0x10 [ 34.532727][ C2] ? getname_flags+0xbd/0x3d0 [ 34.532888][ C2] vfs_fstatat+0x93/0xc0 [ 34.533009][ C2] __do_sys_newfstatat+0x6b/0xc0 [ 34.533289][ C2] ? __pfx___do_sys_newfstatat+0x10/0x10 [ 34.533459][ C2] ? __pfx___lock_release+0x10/0x10 [ 34.533654][ C2] ? __up_read+0x1a7/0x780 [ 34.533845][ C2] ? __pfx___up_read+0x10/0x10 [ 34.534120][ C2] ? do_user_addr_fault+0x4b8/0xbe0 [ 34.534305][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 34.534536][ C2] do_syscall_64+0xc6/0x1e0 [ 34.534720][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.535088][ C2] RIP: 0033:0x7f4a70805eee [ 34.535271][ C2] Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 07 00 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 48 8b 15 d9 [ 34.535890][ C2] RSP: 002b:00007ffc01de8f18 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 34.536155][ C2] RAX: ffffffffffffffda RBX: 0000000000000024 RCX: 00007f4a70805eee [ 34.536408][ C2] RDX: 00007ffc01de8f20 RSI: 0000562d808ef9e0 RDI: 00000000ffffff9c [ 34.536668][ C2] RBP: 0000562d808ef9e0 R08: 00007ffc01de9048 R09: 0000562d8090d364 [ 34.536925][ C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 34.537163][ C2] R13: 00007ffc01de9048 R14: 0000562d808ef9e0 R15: 0000562d8090eeb0 [ 34.537422][ C2] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr