[ 93.603457][ T523] sctp: Hash tables configured (bind 32/56) [ 101.159308][ C3] [ 101.159419][ C3] ======================================================== [ 101.159662][ C3] WARNING: possible irq lock inversion dependency detected [ 101.159893][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 101.160047][ C3] -------------------------------------------------------- [ 101.160279][ C3] sctp_hello/582 just changed the state of lock: [ 101.160469][ C3] ffff888006430d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 101.160752][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 101.161003][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 101.161007][ C3] [ 101.161007][ C3] [ 101.161007][ C3] and interrupts could create inverse lock ordering between them. [ 101.161007][ C3] [ 101.161571][ C3] [ 101.161571][ C3] other info that might help us debug this: [ 101.161798][ C3] Possible interrupt unsafe locking scenario: [ 101.161798][ C3] [ 101.162022][ C3] CPU0 CPU1 [ 101.162175][ C3] ---- ---- [ 101.162330][ C3] lock(&p->alloc_lock); [ 101.162446][ C3] local_irq_disable(); [ 101.162631][ C3] lock(&ndev->lock); [ 101.162822][ C3] lock(&p->alloc_lock); [ 101.163011][ C3] [ 101.163125][ C3] lock(&ndev->lock); [ 101.163242][ C3] [ 101.163242][ C3] *** DEADLOCK *** [ 101.163242][ C3] [ 101.163468][ C3] 1 lock held by sctp_hello/582: [ 101.163627][ C3] #0: ffffc90000288d68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 101.163907][ C3] [ 101.163907][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 101.164171][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 101.164341][ C3] HARDIRQ-ON-W at: [ 101.164461][ C3] __lock_acquire+0x797/0x1570 [ 101.164657][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.164852][ C3] _raw_spin_lock+0x30/0x40 [ 101.165047][ C3] set_mems_allowed+0x1d/0x210 [ 101.165254][ C3] kernel_init_freeable+0x72/0x310 [ 101.165455][ C3] kernel_init+0x20/0x200 [ 101.165653][ C3] ret_from_fork+0x31/0x70 [ 101.165855][ C3] ret_from_fork_asm+0x1a/0x30 [ 101.166044][ C3] SOFTIRQ-ON-W at: [ 101.166162][ C3] __lock_acquire+0x797/0x1570 [ 101.166353][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.166547][ C3] _raw_spin_lock+0x30/0x40 [ 101.166744][ C3] set_mems_allowed+0x1d/0x210 [ 101.166935][ C3] kernel_init_freeable+0x72/0x310 [ 101.167124][ C3] kernel_init+0x20/0x200 [ 101.167316][ C3] ret_from_fork+0x31/0x70 [ 101.167510][ C3] ret_from_fork_asm+0x1a/0x30 [ 101.167702][ C3] INITIAL USE at: [ 101.167821][ C3] __lock_acquire+0x797/0x1570 [ 101.168018][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.168212][ C3] _raw_spin_lock+0x30/0x40 [ 101.168413][ C3] set_mems_allowed+0x1d/0x210 [ 101.168604][ C3] kernel_init_freeable+0x72/0x310 [ 101.168795][ C3] kernel_init+0x20/0x200 [ 101.168998][ C3] ret_from_fork+0x31/0x70 [ 101.169189][ C3] ret_from_fork_asm+0x1a/0x30 [ 101.169380][ C3] } [ 101.169463][ C3] ... key at: [] __key.388+0x0/0x40 [ 101.169696][ C3] ... acquired at: [ 101.169811][ C3] __lock_acquire+0xaf0/0x1570 [ 101.169974][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.170128][ C3] _raw_spin_lock+0x30/0x40 [ 101.170284][ C3] __get_task_comm+0x27/0x70 [ 101.170440][ C3] ref_tracker_alloc+0x2ee/0x490 [ 101.170598][ C3] netdev_get_by_index+0x5e/0x80 [ 101.170751][ C3] fib6_nh_init+0x3d8/0x1580 [ 101.170913][ C3] ip6_route_info_create+0xf18/0x17d0 [ 101.171064][ C3] ip6_route_add+0x1c/0x140 [ 101.171219][ C3] addrconf_prefix_route+0x2a6/0x430 [ 101.171372][ C3] addrconf_permanent_addr+0x32f/0x670 [ 101.171529][ C3] addrconf_notify+0x749/0xd60 [ 101.171685][ C3] notifier_call_chain+0xcd/0x150 [ 101.171837][ C3] __dev_notify_flags+0xe6/0x250 [ 101.171991][ C3] dev_change_flags+0xec/0x160 [ 101.172144][ C3] do_setlink+0x7d6/0x21e0 [ 101.172301][ C3] __rtnl_newlink+0xaa7/0xd80 [ 101.172459][ C3] rtnl_newlink+0x63/0xa0 [ 101.172612][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 101.172770][ C3] netlink_rcv_skb+0x130/0x360 [ 101.172925][ C3] netlink_unicast+0x449/0x710 [ 101.173077][ C3] netlink_sendmsg+0x723/0xbe0 [ 101.173229][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 101.173382][ C3] ___sys_sendmsg+0xee/0x170 [ 101.173537][ C3] __sys_sendmsg+0xcd/0x170 [ 101.173691][ C3] do_syscall_64+0xc6/0x1e0 [ 101.173844][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.174033][ C3] [ 101.174117][ C3] -> (&ndev->lock){++-.}-{2:2} { [ 101.174273][ C3] HARDIRQ-ON-W at: [ 101.174389][ C3] __lock_acquire+0x797/0x1570 [ 101.174581][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.174774][ C3] _raw_write_lock_bh+0x38/0x50 [ 101.174966][ C3] addrconf_permanent_addr+0x6e/0x670 [ 101.175161][ C3] addrconf_notify+0x749/0xd60 [ 101.175355][ C3] notifier_call_chain+0xcd/0x150 [ 101.175548][ C3] __dev_notify_flags+0xe6/0x250 [ 101.175740][ C3] dev_change_flags+0xec/0x160 [ 101.175930][ C3] do_setlink+0x7d6/0x21e0 [ 101.176122][ C3] __rtnl_newlink+0xaa7/0xd80 [ 101.176315][ C3] rtnl_newlink+0x63/0xa0 [ 101.176507][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 101.176703][ C3] netlink_rcv_skb+0x130/0x360 [ 101.176894][ C3] netlink_unicast+0x449/0x710 [ 101.177083][ C3] netlink_sendmsg+0x723/0xbe0 [ 101.177275][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 101.177468][ C3] ___sys_sendmsg+0xee/0x170 [ 101.177659][ C3] __sys_sendmsg+0xcd/0x170 [ 101.177854][ C3] do_syscall_64+0xc6/0x1e0 [ 101.178047][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.178274][ C3] HARDIRQ-ON-R at: [ 101.178388][ C3] __lock_acquire+0x797/0x1570 [ 101.178588][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.178783][ C3] _raw_read_lock_bh+0x44/0x80 [ 101.178977][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 101.179176][ C3] inet6_fill_link_af+0x5e/0xe0 [ 101.179370][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 101.179560][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 101.179751][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 101.179981][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 101.180176][ C3] register_netdevice+0x1177/0x1690 [ 101.180375][ C3] register_netdev+0x20/0x40 [ 101.180566][ C3] vti6_init_net+0x25d/0x380 [ 101.180761][ C3] ops_init+0x9b/0x560 [ 101.180916][ C3] register_pernet_operations+0x2db/0x710 [ 101.181144][ C3] register_pernet_device+0x2a/0x60 [ 101.181336][ C3] vti6_tunnel_init+0x18/0x110 [ 101.181534][ C3] do_one_initcall+0x8d/0x1e0 [ 101.181727][ C3] do_initcalls+0x1b2/0x3e0 [ 101.181919][ C3] kernel_init_freeable+0x232/0x310 [ 101.182112][ C3] kernel_init+0x20/0x200 [ 101.182314][ C3] ret_from_fork+0x31/0x70 [ 101.182508][ C3] ret_from_fork_asm+0x1a/0x30 [ 101.182703][ C3] IN-SOFTIRQ-W at: [ 101.182823][ C3] __lock_acquire+0x797/0x1570 [ 101.183014][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.183207][ C3] _raw_write_lock+0x30/0x40 [ 101.183402][ C3] addrconf_rs_timer+0xa9/0x730 [ 101.183593][ C3] call_timer_fn+0x13b/0x230 [ 101.183786][ C3] __run_timers+0x545/0x810 [ 101.183980][ C3] run_timer_softirq+0xe8/0x1b0 [ 101.184175][ C3] __do_softirq+0x1f8/0x5df [ 101.184378][ C3] irq_exit_rcu+0x97/0xc0 [ 101.184568][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 101.184799][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 101.185030][ C3] unwind_next_frame+0x27/0x1d00 [ 101.185244][ C3] arch_stack_walk+0x8c/0xf0 [ 101.185444][ C3] stack_trace_save+0x94/0xd0 [ 101.185636][ C3] set_track_prepare+0x31/0x70 [ 101.185837][ C3] ___slab_alloc+0xe8b/0x10a0 [ 101.186031][ C3] __kmalloc+0x34c/0x3c0 [ 101.186222][ C3] p9pdu_vreadf+0xb22/0x2200 [ 101.186415][ C3] p9pdu_readf+0xa7/0xe0 [ 101.186606][ C3] p9_client_readlink+0xc1/0x120 [ 101.186802][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 101.186997][ C3] pick_link+0x8b4/0x1160 [ 101.187191][ C3] step_into+0x84e/0xfa0 [ 101.187487][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 101.187715][ C3] path_lookupat+0x72/0x660 [ 101.187907][ C3] filename_lookup+0x19e/0x420 [ 101.188199][ C3] vfs_statx+0xe8/0x460 [ 101.188390][ C3] vfs_fstatat+0x93/0xc0 [ 101.188581][ C3] __do_sys_newfstatat+0x6b/0xc0 [ 101.188773][ C3] do_syscall_64+0xc6/0x1e0 [ 101.189067][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.189295][ C3] INITIAL USE at: [ 101.189413][ C3] __lock_acquire+0x797/0x1570 [ 101.189703][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.189895][ C3] _raw_write_lock_bh+0x38/0x50 [ 101.190092][ C3] addrconf_permanent_addr+0x6e/0x670 [ 101.190286][ C3] addrconf_notify+0x749/0xd60 [ 101.190669][ C3] notifier_call_chain+0xcd/0x150 [ 101.190859][ C3] __dev_notify_flags+0xe6/0x250 [ 101.191054][ C3] dev_change_flags+0xec/0x160 [ 101.191359][ C3] do_setlink+0x7d6/0x21e0 [ 101.191549][ C3] __rtnl_newlink+0xaa7/0xd80 [ 101.191736][ C3] rtnl_newlink+0x63/0xa0 [ 101.191932][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 101.192124][ C3] netlink_rcv_skb+0x130/0x360 [ 101.192326][ C3] netlink_unicast+0x449/0x710 [ 101.192517][ C3] netlink_sendmsg+0x723/0xbe0 [ 101.192708][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 101.192900][ C3] ___sys_sendmsg+0xee/0x170 [ 101.193091][ C3] __sys_sendmsg+0xcd/0x170 [ 101.193283][ C3] do_syscall_64+0xc6/0x1e0 [ 101.193474][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.193707][ C3] INITIAL READ USE at: [ 101.193822][ C3] __lock_acquire+0x797/0x1570 [ 101.194013][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.194203][ C3] _raw_read_lock_bh+0x44/0x80 [ 101.194395][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 101.194626][ C3] inet6_fill_link_af+0x5e/0xe0 [ 101.194821][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 101.195012][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 101.195251][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 101.195480][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 101.195671][ C3] register_netdevice+0x1177/0x1690 [ 101.195902][ C3] register_netdev+0x20/0x40 [ 101.196096][ C3] vti6_init_net+0x25d/0x380 [ 101.196291][ C3] ops_init+0x9b/0x560 [ 101.196483][ C3] register_pernet_operations+0x2db/0x710 [ 101.196710][ C3] register_pernet_device+0x2a/0x60 [ 101.196938][ C3] vti6_tunnel_init+0x18/0x110 [ 101.197130][ C3] do_one_initcall+0x8d/0x1e0 [ 101.197326][ C3] do_initcalls+0x1b2/0x3e0 [ 101.197519][ C3] kernel_init_freeable+0x232/0x310 [ 101.197754][ C3] kernel_init+0x20/0x200 [ 101.197947][ C3] ret_from_fork+0x31/0x70 [ 101.198139][ C3] ret_from_fork_asm+0x1a/0x30 [ 101.198331][ C3] } [ 101.198420][ C3] ... key at: [] __key.37+0x0/0x40 [ 101.198653][ C3] ... acquired at: [ 101.198768][ C3] mark_lock+0x28d/0x3e0 [ 101.198924][ C3] mark_usage+0xd9/0x2a0 [ 101.199077][ C3] __lock_acquire+0x797/0x1570 [ 101.199231][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.199388][ C3] _raw_write_lock+0x30/0x40 [ 101.199541][ C3] addrconf_rs_timer+0xa9/0x730 [ 101.199694][ C3] call_timer_fn+0x13b/0x230 [ 101.199850][ C3] __run_timers+0x545/0x810 [ 101.200001][ C3] run_timer_softirq+0xe8/0x1b0 [ 101.200152][ C3] __do_softirq+0x1f8/0x5df [ 101.200309][ C3] irq_exit_rcu+0x97/0xc0 [ 101.200466][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 101.200658][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 101.200848][ C3] unwind_next_frame+0x27/0x1d00 [ 101.201002][ C3] arch_stack_walk+0x8c/0xf0 [ 101.201161][ C3] stack_trace_save+0x94/0xd0 [ 101.201318][ C3] set_track_prepare+0x31/0x70 [ 101.201470][ C3] ___slab_alloc+0xe8b/0x10a0 [ 101.201623][ C3] __kmalloc+0x34c/0x3c0 [ 101.201787][ C3] p9pdu_vreadf+0xb22/0x2200 [ 101.201943][ C3] p9pdu_readf+0xa7/0xe0 [ 101.202095][ C3] p9_client_readlink+0xc1/0x120 [ 101.202249][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 101.202406][ C3] pick_link+0x8b4/0x1160 [ 101.202561][ C3] step_into+0x84e/0xfa0 [ 101.202713][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 101.202903][ C3] path_lookupat+0x72/0x660 [ 101.203055][ C3] filename_lookup+0x19e/0x420 [ 101.203205][ C3] vfs_statx+0xe8/0x460 [ 101.203323][ C3] vfs_fstatat+0x93/0xc0 [ 101.203474][ C3] __do_sys_newfstatat+0x6b/0xc0 [ 101.203628][ C3] do_syscall_64+0xc6/0x1e0 [ 101.203788][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.203979][ C3] [ 101.204055][ C3] [ 101.204055][ C3] stack backtrace: [ 101.204245][ C3] CPU: 3 PID: 582 Comm: sctp_hello Not tainted 6.9.0-rc1-virtme #1 [ 101.204475][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 101.204820][ C3] Call Trace: [ 101.204943][ C3] [ 101.205024][ C3] dump_stack_lvl+0x82/0xd0 [ 101.205198][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 101.205387][ C3] ? kernel_text_address+0xce/0xe0 [ 101.205544][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 101.205735][ C3] ? __pfx_usage_skip+0x10/0x10 [ 101.205889][ C3] ? __pfx_usage_match+0x10/0x10 [ 101.206041][ C3] ? arch_stack_walk+0xa2/0xf0 [ 101.206202][ C3] mark_lock_irq+0x4cd/0xa10 [ 101.206357][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 101.206514][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 101.206668][ C3] ? save_trace+0x8f/0x5b0 [ 101.206823][ C3] mark_lock+0x28d/0x3e0 [ 101.206938][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 101.207094][ C3] mark_usage+0xd9/0x2a0 [ 101.207210][ C3] __lock_acquire+0x797/0x1570 [ 101.207365][ C3] ? __pfx_validate_chain+0x10/0x10 [ 101.207523][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 101.207674][ C3] lock_acquire.part.0+0xeb/0x330 [ 101.207827][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 101.207979][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 101.208134][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 101.208286][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 101.208448][ C3] ? lock_acquire+0x32/0xc0 [ 101.208600][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 101.208756][ C3] _raw_write_lock+0x30/0x40 [ 101.208911][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 101.209064][ C3] addrconf_rs_timer+0xa9/0x730 [ 101.209215][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 101.209376][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 101.209527][ C3] ? call_timer_fn+0xe8/0x230 [ 101.209680][ C3] ? lock_acquire+0x32/0xc0 [ 101.209832][ C3] ? call_timer_fn+0xe8/0x230 [ 101.209988][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 101.210139][ C3] call_timer_fn+0x13b/0x230 [ 101.210292][ C3] ? call_timer_fn+0xe8/0x230 [ 101.210444][ C3] ? call_timer_fn+0xe8/0x230 [ 101.210597][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 101.210749][ C3] ? mark_lock+0x38/0x3e0 [ 101.210867][ C3] __run_timers+0x545/0x810 [ 101.211022][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 101.211183][ C3] ? __pfx___run_timers+0x10/0x10 [ 101.211347][ C3] ? do_raw_spin_lock+0x131/0x270 [ 101.211502][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 101.211656][ C3] ? lock_acquire+0x32/0xc0 [ 101.211808][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 101.211961][ C3] run_timer_softirq+0xe8/0x1b0 [ 101.212113][ C3] __do_softirq+0x1f8/0x5df [ 101.212268][ C3] irq_exit_rcu+0x97/0xc0 [ 101.212384][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 101.212542][ C3] [ 101.212621][ C3] [ 101.212698][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 101.212888][ C3] RIP: 0010:unwind_next_frame+0x27/0x1d00 [ 101.213050][ C3] Code: 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 41 57 41 56 41 55 49 89 fd 41 54 55 53 48 81 ec c8 00 00 00 <48> c7 44 24 48 b3 8a b5 41 4c 8d 4c 24 48 48 c7 44 24 50 a8 85 00 [ 101.213590][ C3] RSP: 0018:ffffc9000082f218 EFLAGS: 00000296 [ 101.213791][ C3] RAX: 0000000000000001 RBX: ffffffffb7bc9f90 RCX: ffffc90000830001 [ 101.214018][ C3] RDX: dffffc0000000000 RSI: ffffffffb8215efe RDI: ffffc9000082f318 [ 101.214247][ C3] RBP: ffffc9000082f3b0 R08: ffffc9000082f358 R09: fffff52000105e4c [ 101.214473][ C3] R10: ffffc9000082f318 R11: ffffc9000082f359 R12: ffffc9000082f3e0 [ 101.214699][ C3] R13: ffffc9000082f318 R14: ffff888005c145c0 R15: ffff888004c2d5b0 [ 101.214932][ C3] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 101.215124][ C3] ? step_into+0x84e/0xfa0 [ 101.215291][ C3] ? unwind_next_frame+0x1478/0x1d00 [ 101.215444][ C3] ? pick_link+0x8b4/0x1160 [ 101.215601][ C3] ? hlock_class+0x4e/0x130 [ 101.215754][ C3] ? __pfx_unwind_next_frame+0x10/0x10 [ 101.215908][ C3] ? step_into+0x84e/0xfa0 [ 101.216064][ C3] ? kernel_text_address+0x17/0xe0 [ 101.216218][ C3] ? step_into+0x84e/0xfa0 [ 101.216369][ C3] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 101.216559][ C3] arch_stack_walk+0x8c/0xf0 [ 101.216715][ C3] ? step_into+0x84e/0xfa0 [ 101.216867][ C3] stack_trace_save+0x94/0xd0 [ 101.217018][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 101.217170][ C3] set_track_prepare+0x31/0x70 [ 101.217322][ C3] ? p9pdu_vreadf+0xb22/0x2200 [ 101.217488][ C3] ? p9pdu_readf+0xa7/0xe0 [ 101.217640][ C3] ? p9_client_readlink+0xc1/0x120 [ 101.217792][ C3] ? v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 101.217945][ C3] ? pick_link+0x8b4/0x1160 [ 101.218096][ C3] ? step_into+0x84e/0xfa0 [ 101.218251][ C3] ___slab_alloc+0xe8b/0x10a0 [ 101.218407][ C3] ? fs_reclaim_acquire+0xb3/0x170 [ 101.218557][ C3] ? p9pdu_vreadf+0xb22/0x2200 [ 101.218711][ C3] ? __pfx___lock_release+0x10/0x10 [ 101.218869][ C3] ? p9pdu_vreadf+0xb22/0x2200 [ 101.219021][ C3] ? __kmalloc+0x34c/0x3c0 [ 101.219173][ C3] __kmalloc+0x34c/0x3c0 [ 101.219291][ C3] p9pdu_vreadf+0xb22/0x2200 [ 101.219443][ C3] ? trace_9p_client_res+0xf4/0x150 [ 101.219595][ C3] ? p9_client_rpc+0x48a/0x930 [ 101.219747][ C3] ? __pfx_p9pdu_vreadf+0x10/0x10 [ 101.219903][ C3] ? __pfx_p9_client_rpc+0x10/0x10 [ 101.220059][ C3] p9pdu_readf+0xa7/0xe0 [ 101.220176][ C3] ? __pfx_p9pdu_readf+0x10/0x10 [ 101.220338][ C3] ? __pfx_v9fs_fid_find+0x10/0x10 [ 101.220492][ C3] ? _raw_spin_unlock+0x23/0x40 [ 101.220645][ C3] ? v9fs_fid_add+0xf8/0x190 [ 101.220801][ C3] p9_client_readlink+0xc1/0x120 [ 101.220953][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 101.221103][ C3] ? __pfx_v9fs_vfs_get_link_dotl+0x10/0x10 [ 101.221302][ C3] ? __lookup_slow+0x209/0x3c0 [ 101.221454][ C3] pick_link+0x8b4/0x1160 [ 101.221568][ C3] ? find_held_lock+0x2c/0x110 [ 101.221721][ C3] step_into+0x84e/0xfa0 [ 101.221836][ C3] ? __up_read+0x1a7/0x780 [ 101.221994][ C3] ? __pfx_step_into+0x10/0x10 [ 101.222255][ C3] ? walk_component+0x2b6/0x4f0 [ 101.222410][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 101.222596][ C3] ? __pfx_link_path_walk.part.0.constprop.0+0x10/0x10 [ 101.222790][ C3] ? validate_chain+0x130/0x9b0 [ 101.222942][ C3] ? hlock_class+0x4e/0x130 [ 101.223094][ C3] path_lookupat+0x72/0x660 [ 101.223245][ C3] filename_lookup+0x19e/0x420 [ 101.223411][ C3] ? __pfx_filename_lookup+0x10/0x10 [ 101.223659][ C3] ? find_held_lock+0x2c/0x110 [ 101.223811][ C3] ? __lock_release+0x103/0x460 [ 101.223961][ C3] ? __might_fault+0x11b/0x170 [ 101.224115][ C3] ? __pfx___lock_release+0x10/0x10 [ 101.224265][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 101.224523][ C3] vfs_statx+0xe8/0x460 [ 101.224637][ C3] ? __pfx_vfs_statx+0x10/0x10 [ 101.224786][ C3] ? getname_flags+0xbd/0x3d0 [ 101.224942][ C3] vfs_fstatat+0x93/0xc0 [ 101.225055][ C3] __do_sys_newfstatat+0x6b/0xc0 [ 101.225216][ C3] ? __pfx___do_sys_newfstatat+0x10/0x10 [ 101.225370][ C3] ? __x64_sys_openat+0x123/0x1e0 [ 101.225521][ C3] ? __pfx___x64_sys_openat+0x10/0x10 [ 101.225669][ C3] ? __pfx_do_faccessat+0x10/0x10 [ 101.225925][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 101.226112][ C3] do_syscall_64+0xc6/0x1e0 [ 101.226265][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 101.226554][ C3] RIP: 0033:0x7f3f2d754eae [ 101.226711][ C3] 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 f7 d8 89 05 [ 101.227359][ C3] RSP: 002b:00007ffc5b1acbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 101.227586][ C3] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f3f2d754eae [ 101.227819][ C3] RDX: 00007ffc5b1accc0 RSI: 00007ffc5b1acc00 RDI: 00000000ffffff9c [ 101.228048][ C3] RBP: 00007ffc5b1acd80 R08: 00000000ffffffff R09: 00007ffc5b1acc00 [ 101.228270][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc5b1acc07 [ 101.228492][ C3] R13: 00007ffc5b1acc00 R14: 00007f3f2d764220 R15: 00007f3f2d726000 [ 101.228720][ C3]