[ 30.758172][ C3] [ 30.758286][ C3] ======================================================== [ 30.758537][ C3] WARNING: possible irq lock inversion dependency detected [ 30.758779][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 30.758944][ C3] -------------------------------------------------------- [ 30.759190][ C3] ip/315 just changed the state of lock: [ 30.759363][ C3] ffff888006456d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 30.759666][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 30.759913][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 30.759918][ C3] [ 30.759918][ C3] [ 30.759918][ C3] and interrupts could create inverse lock ordering between them. [ 30.759918][ C3] [ 30.760526][ C3] [ 30.760526][ C3] other info that might help us debug this: [ 30.760778][ C3] Possible interrupt unsafe locking scenario: [ 30.760778][ C3] [ 30.761030][ C3] CPU0 CPU1 [ 30.761195][ C3] ---- ---- [ 30.761357][ C3] lock(&p->alloc_lock); [ 30.761483][ C3] local_irq_disable(); [ 30.761684][ C3] lock(&ndev->lock); [ 30.761897][ C3] lock(&p->alloc_lock); [ 30.762102][ C3] [ 30.762225][ C3] lock(&ndev->lock); [ 30.762351][ C3] [ 30.762351][ C3] *** DEADLOCK *** [ 30.762351][ C3] [ 30.762592][ C3] 1 lock held by ip/315: [ 30.762716][ C3] #0: ffffc90000288d68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 30.763017][ C3] [ 30.763017][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 30.763302][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 30.763477][ C3] HARDIRQ-ON-W at: [ 30.763604][ C3] __lock_acquire+0x797/0x1570 [ 30.763820][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.764031][ C3] _raw_spin_lock+0x30/0x40 [ 30.764245][ C3] set_mems_allowed+0x1d/0x210 [ 30.764454][ C3] kernel_init_freeable+0x72/0x310 [ 30.764663][ C3] kernel_init+0x20/0x200 [ 30.764881][ C3] ret_from_fork+0x31/0x70 [ 30.765088][ C3] ret_from_fork_asm+0x1a/0x30 [ 30.765298][ C3] SOFTIRQ-ON-W at: [ 30.765422][ C3] __lock_acquire+0x797/0x1570 [ 30.765633][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.765841][ C3] _raw_spin_lock+0x30/0x40 [ 30.766059][ C3] set_mems_allowed+0x1d/0x210 [ 30.766267][ C3] kernel_init_freeable+0x72/0x310 [ 30.766474][ C3] kernel_init+0x20/0x200 [ 30.766682][ C3] ret_from_fork+0x31/0x70 [ 30.766894][ C3] ret_from_fork_asm+0x1a/0x30 [ 30.767101][ C3] INITIAL USE at: [ 30.767234][ C3] __lock_acquire+0x797/0x1570 [ 30.767440][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.767649][ C3] _raw_spin_lock+0x30/0x40 [ 30.767853][ C3] set_mems_allowed+0x1d/0x210 [ 30.768065][ C3] kernel_init_freeable+0x72/0x310 [ 30.768278][ C3] kernel_init+0x20/0x200 [ 30.768482][ C3] ret_from_fork+0x31/0x70 [ 30.768691][ C3] ret_from_fork_asm+0x1a/0x30 [ 30.768898][ C3] } [ 30.768985][ C3] ... key at: [] __key.388+0x0/0x40 [ 30.769233][ C3] ... acquired at: [ 30.769359][ C3] __lock_acquire+0xaf0/0x1570 [ 30.769527][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.769695][ C3] _raw_spin_lock+0x30/0x40 [ 30.769858][ C3] __get_task_comm+0x27/0x70 [ 30.770027][ C3] ref_tracker_alloc+0x2ee/0x490 [ 30.770193][ C3] netdev_get_by_index+0x5e/0x80 [ 30.770366][ C3] fib6_nh_init+0x3d8/0x1580 [ 30.770537][ C3] ip6_route_info_create+0xf18/0x17d0 [ 30.770705][ C3] ip6_route_add+0x1c/0x140 [ 30.770873][ C3] addrconf_prefix_route+0x2a6/0x430 [ 30.771039][ C3] addrconf_permanent_addr+0x32f/0x670 [ 30.771209][ C3] addrconf_notify+0x749/0xd60 [ 30.771385][ C3] notifier_call_chain+0xcd/0x150 [ 30.771551][ C3] __dev_notify_flags+0xe6/0x250 [ 30.771718][ C3] dev_change_flags+0xec/0x160 [ 30.771892][ C3] do_setlink+0x7d6/0x21e0 [ 30.772060][ C3] __rtnl_newlink+0xaa7/0xd80 [ 30.772229][ C3] rtnl_newlink+0x63/0xa0 [ 30.772396][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.772561][ C3] netlink_rcv_skb+0x130/0x360 [ 30.772727][ C3] netlink_unicast+0x449/0x710 [ 30.772895][ C3] netlink_sendmsg+0x723/0xbe0 [ 30.773060][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 30.773227][ C3] ___sys_sendmsg+0xee/0x170 [ 30.773396][ C3] __sys_sendmsg+0xcd/0x170 [ 30.773574][ C3] do_syscall_64+0xc6/0x1e0 [ 30.773741][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.773947][ C3] [ 30.774034][ C3] -> (&ndev->lock){++-.}-{2:2} { [ 30.774204][ C3] HARDIRQ-ON-W at: [ 30.774328][ C3] __lock_acquire+0x797/0x1570 [ 30.774539][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.774752][ C3] _raw_write_lock_bh+0x38/0x50 [ 30.774967][ C3] addrconf_permanent_addr+0x6e/0x670 [ 30.775177][ C3] addrconf_notify+0x749/0xd60 [ 30.775386][ C3] notifier_call_chain+0xcd/0x150 [ 30.775597][ C3] __dev_notify_flags+0xe6/0x250 [ 30.775822][ C3] dev_change_flags+0xec/0x160 [ 30.776037][ C3] do_setlink+0x7d6/0x21e0 [ 30.776255][ C3] __rtnl_newlink+0xaa7/0xd80 [ 30.776463][ C3] rtnl_newlink+0x63/0xa0 [ 30.776672][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.776880][ C3] netlink_rcv_skb+0x130/0x360 [ 30.777086][ C3] netlink_unicast+0x449/0x710 [ 30.777300][ C3] netlink_sendmsg+0x723/0xbe0 [ 30.777505][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 30.777717][ C3] ___sys_sendmsg+0xee/0x170 [ 30.777926][ C3] __sys_sendmsg+0xcd/0x170 [ 30.778134][ C3] do_syscall_64+0xc6/0x1e0 [ 30.778342][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.778586][ C3] HARDIRQ-ON-R at: [ 30.778711][ C3] __lock_acquire+0x797/0x1570 [ 30.778928][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.779142][ C3] _raw_read_lock_bh+0x44/0x80 [ 30.779350][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.779559][ C3] inet6_fill_link_af+0x5e/0xe0 [ 30.779768][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.779980][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.780193][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.780446][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 30.780654][ C3] register_netdevice+0x1177/0x1690 [ 30.780864][ C3] register_netdev+0x20/0x40 [ 30.781075][ C3] vti6_init_net+0x25d/0x380 [ 30.781295][ C3] ops_init+0x9b/0x560 [ 30.781463][ C3] register_pernet_operations+0x2db/0x710 [ 30.781715][ C3] register_pernet_device+0x2a/0x60 [ 30.781925][ C3] vti6_tunnel_init+0x18/0x110 [ 30.782133][ C3] do_one_initcall+0x8d/0x1e0 [ 30.782340][ C3] do_initcalls+0x1b2/0x3e0 [ 30.782548][ C3] kernel_init_freeable+0x232/0x310 [ 30.782766][ C3] kernel_init+0x20/0x200 [ 30.782978][ C3] ret_from_fork+0x31/0x70 [ 30.783188][ C3] ret_from_fork_asm+0x1a/0x30 [ 30.783406][ C3] IN-SOFTIRQ-W at: [ 30.783532][ C3] __lock_acquire+0x797/0x1570 [ 30.783741][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.783949][ C3] _raw_write_lock+0x30/0x40 [ 30.784157][ C3] addrconf_rs_timer+0xa9/0x730 [ 30.784366][ C3] call_timer_fn+0x13b/0x230 [ 30.784576][ C3] __run_timers+0x545/0x810 [ 30.784786][ C3] run_timer_softirq+0xe8/0x1b0 [ 30.784996][ C3] __do_softirq+0x1f8/0x5df [ 30.785207][ C3] irq_exit_rcu+0x97/0xc0 [ 30.785414][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.785668][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.785917][ C3] _raw_spin_unlock_irqrestore+0x43/0x70 [ 30.786183][ C3] get_partial_node.part.0+0x1c5/0x3a0 [ 30.786392][ C3] ___slab_alloc+0xb70/0x10a0 [ 30.786600][ C3] __kmalloc+0x34c/0x3c0 [ 30.786808][ C3] p9_fcall_init+0x7d/0x1b0 [ 30.787016][ C3] p9_tag_alloc+0x1bd/0x700 [ 30.787228][ C3] p9_client_prepare_req+0xe6/0x290 [ 30.787438][ C3] p9_client_rpc+0x18d/0x930 [ 30.787650][ C3] p9_client_readlink+0x71/0x120 [ 30.787857][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 30.788072][ C3] pick_link+0x8b4/0x1160 [ 30.788280][ C3] step_into+0x84e/0xfa0 [ 30.788492][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 30.788755][ C3] path_openat+0x1be/0x440 [ 30.788960][ C3] do_filp_open+0x1b3/0x3e0 [ 30.789172][ C3] do_sys_openat2+0x122/0x160 [ 30.789378][ C3] __x64_sys_openat+0x123/0x1e0 [ 30.789584][ C3] do_syscall_64+0xc6/0x1e0 [ 30.789891][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.790143][ C3] INITIAL USE at: [ 30.790267][ C3] __lock_acquire+0x797/0x1570 [ 30.790473][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.790775][ C3] _raw_write_lock_bh+0x38/0x50 [ 30.790981][ C3] addrconf_permanent_addr+0x6e/0x670 [ 30.791188][ C3] addrconf_notify+0x749/0xd60 [ 30.791493][ C3] notifier_call_chain+0xcd/0x150 [ 30.791699][ C3] __dev_notify_flags+0xe6/0x250 [ 30.791904][ C3] dev_change_flags+0xec/0x160 [ 30.792108][ C3] do_setlink+0x7d6/0x21e0 [ 30.792410][ C3] __rtnl_newlink+0xaa7/0xd80 [ 30.792619][ C3] rtnl_newlink+0x63/0xa0 [ 30.792829][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.793035][ C3] netlink_rcv_skb+0x130/0x360 [ 30.793241][ C3] netlink_unicast+0x449/0x710 [ 30.793453][ C3] netlink_sendmsg+0x723/0xbe0 [ 30.793667][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 30.793965][ C3] ___sys_sendmsg+0xee/0x170 [ 30.794171][ C3] __sys_sendmsg+0xcd/0x170 [ 30.794383][ C3] do_syscall_64+0xc6/0x1e0 [ 30.794683][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.794931][ C3] INITIAL READ USE at: [ 30.795055][ C3] __lock_acquire+0x797/0x1570 [ 30.795260][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.795560][ C3] _raw_read_lock_bh+0x44/0x80 [ 30.795769][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.796050][ C3] inet6_fill_link_af+0x5e/0xe0 [ 30.796364][ C3] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.796570][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.796814][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.797063][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 30.797285][ C3] register_netdevice+0x1177/0x1690 [ 30.797529][ C3] register_netdev+0x20/0x40 [ 30.797829][ C3] vti6_init_net+0x25d/0x380 [ 30.798034][ C3] ops_init+0x9b/0x560 [ 30.798240][ C3] register_pernet_operations+0x2db/0x710 [ 30.798581][ C3] register_pernet_device+0x2a/0x60 [ 30.798828][ C3] vti6_tunnel_init+0x18/0x110 [ 30.799032][ C3] do_one_initcall+0x8d/0x1e0 [ 30.799331][ C3] do_initcalls+0x1b2/0x3e0 [ 30.799538][ C3] kernel_init_freeable+0x232/0x310 [ 30.799780][ C3] kernel_init+0x20/0x200 [ 30.799984][ C3] ret_from_fork+0x31/0x70 [ 30.800293][ C3] ret_from_fork_asm+0x1a/0x30 [ 30.800502][ C3] } [ 30.800589][ C3] ... key at: [] __key.37+0x0/0x40 [ 30.800835][ C3] ... acquired at: [ 30.800955][ C3] mark_lock+0x28d/0x3e0 [ 30.801124][ C3] mark_usage+0xd9/0x2a0 [ 30.801292][ C3] __lock_acquire+0x797/0x1570 [ 30.801455][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.801726][ C3] _raw_write_lock+0x30/0x40 [ 30.801890][ C3] addrconf_rs_timer+0xa9/0x730 [ 30.802052][ C3] call_timer_fn+0x13b/0x230 [ 30.802224][ C3] __run_timers+0x545/0x810 [ 30.802480][ C3] run_timer_softirq+0xe8/0x1b0 [ 30.802643][ C3] __do_softirq+0x1f8/0x5df [ 30.802811][ C3] irq_exit_rcu+0x97/0xc0 [ 30.802976][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.803289][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.803492][ C3] _raw_spin_unlock_irqrestore+0x43/0x70 [ 30.803696][ C3] get_partial_node.part.0+0x1c5/0x3a0 [ 30.803862][ C3] ___slab_alloc+0xb70/0x10a0 [ 30.804122][ C3] __kmalloc+0x34c/0x3c0 [ 30.804286][ C3] p9_fcall_init+0x7d/0x1b0 [ 30.804448][ C3] p9_tag_alloc+0x1bd/0x700 [ 30.804611][ C3] p9_client_prepare_req+0xe6/0x290 [ 30.804872][ C3] p9_client_rpc+0x18d/0x930 [ 30.805035][ C3] p9_client_readlink+0x71/0x120 [ 30.805199][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 30.805363][ C3] pick_link+0x8b4/0x1160 [ 30.805618][ C3] step_into+0x84e/0xfa0 [ 30.805782][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 30.805996][ C3] path_openat+0x1be/0x440 [ 30.806160][ C3] do_filp_open+0x1b3/0x3e0 [ 30.806432][ C3] do_sys_openat2+0x122/0x160 [ 30.806597][ C3] __x64_sys_openat+0x123/0x1e0 [ 30.806760][ C3] do_syscall_64+0xc6/0x1e0 [ 30.806924][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.807227][ C3] [ 30.807310][ C3] [ 30.807310][ C3] stack backtrace: [ 30.807522][ C3] CPU: 3 PID: 315 Comm: ip Not tainted 6.9.0-rc1-virtme #1 [ 30.807768][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 30.808132][ C3] Call Trace: [ 30.808265][ C3] [ 30.808349][ C3] dump_stack_lvl+0x82/0xd0 [ 30.808515][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 30.808907][ C3] ? kernel_text_address+0xce/0xe0 [ 30.809075][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 30.809279][ C3] ? __pfx_usage_skip+0x10/0x10 [ 30.809444][ C3] ? __pfx_usage_match+0x10/0x10 [ 30.809700][ C3] ? arch_stack_walk+0xa2/0xf0 [ 30.809868][ C3] mark_lock_irq+0x4cd/0xa10 [ 30.810032][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 30.810195][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 30.810455][ C3] ? save_trace+0x8f/0x5b0 [ 30.810620][ C3] mark_lock+0x28d/0x3e0 [ 30.810743][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 30.810906][ C3] mark_usage+0xd9/0x2a0 [ 30.811037][ C3] __lock_acquire+0x797/0x1570 [ 30.811300][ C3] ? __pfx_validate_chain+0x10/0x10 [ 30.811461][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.811622][ C3] lock_acquire.part.0+0xeb/0x330 [ 30.811784][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 30.811947][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.812110][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 30.812273][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 30.812438][ C3] ? lock_acquire+0x32/0xc0 [ 30.812697][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 30.812860][ C3] _raw_write_lock+0x30/0x40 [ 30.813024][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 30.813187][ C3] addrconf_rs_timer+0xa9/0x730 [ 30.813352][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.813613][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.813778][ C3] ? call_timer_fn+0xe8/0x230 [ 30.813943][ C3] ? lock_acquire+0x32/0xc0 [ 30.814107][ C3] ? call_timer_fn+0xe8/0x230 [ 30.814364][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.814528][ C3] call_timer_fn+0x13b/0x230 [ 30.814690][ C3] ? call_timer_fn+0xe8/0x230 [ 30.814853][ C3] ? call_timer_fn+0xe8/0x230 [ 30.815110][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 30.815273][ C3] ? mark_lock+0x38/0x3e0 [ 30.815399][ C3] __run_timers+0x545/0x810 [ 30.815568][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.815731][ C3] ? __pfx___run_timers+0x10/0x10 [ 30.816001][ C3] ? do_raw_spin_lock+0x131/0x270 [ 30.816167][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.816331][ C3] ? lock_acquire+0x32/0xc0 [ 30.816494][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 30.816758][ C3] run_timer_softirq+0xe8/0x1b0 [ 30.816927][ C3] __do_softirq+0x1f8/0x5df [ 30.817093][ C3] irq_exit_rcu+0x97/0xc0 [ 30.817230][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.817486][ C3] [ 30.817570][ C3] [ 30.817657][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.817863][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 30.818073][ C3] Code: 10 e8 81 21 79 fd 48 89 ef e8 b9 91 79 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d f5 7b ad 72 <74> 0e 5b 5d c3 cc cc cc cc e8 0f f0 9c fd eb dc 0f 1f 44 00 00 5b [ 30.818749][ C3] RSP: 0018:ffffc90000bcf330 EFLAGS: 00000282 [ 30.818958][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1e322d9 [ 30.819303][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d564de1 [ 30.819547][ C3] RBP: ffff8880010411c0 R08: 0000000000000001 R09: fffffbfff1e32b5a [ 30.819799][ C3] R10: ffffffff8f195ad7 R11: 0000000000002000 R12: ffff8880010411c0 [ 30.820044][ C3] R13: ffffea0000238800 R14: ffff888001043540 R15: ffff888008e22000 [ 30.820306][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 30.820603][ C3] get_partial_node.part.0+0x1c5/0x3a0 [ 30.820769][ C3] ___slab_alloc+0xb70/0x10a0 [ 30.820937][ C3] ? fs_reclaim_acquire+0xb3/0x170 [ 30.821101][ C3] ? p9_fcall_init+0x7d/0x1b0 [ 30.821272][ C3] ? __pfx___lock_release+0x10/0x10 [ 30.821622][ C3] ? p9_fcall_init+0x7d/0x1b0 [ 30.821784][ C3] ? __kmalloc+0x34c/0x3c0 [ 30.821946][ C3] __kmalloc+0x34c/0x3c0 [ 30.822072][ C3] p9_fcall_init+0x7d/0x1b0 [ 30.822327][ C3] p9_tag_alloc+0x1bd/0x700 [ 30.822493][ C3] ? __pfx_p9_tag_alloc+0x10/0x10 [ 30.822656][ C3] ? mark_lock+0x38/0x3e0 [ 30.822778][ C3] ? __lock_acquire+0xaf0/0x1570 [ 30.822948][ C3] p9_client_prepare_req+0xe6/0x290 [ 30.823204][ C3] ? __pfx_p9_client_prepare_req+0x10/0x10 [ 30.823405][ C3] ? find_held_lock+0x2c/0x110 [ 30.823577][ C3] p9_client_rpc+0x18d/0x930 [ 30.823743][ C3] ? do_raw_spin_lock+0x131/0x270 [ 30.823999][ C3] ? __pfx_p9_client_rpc+0x10/0x10 [ 30.824163][ C3] ? v9fs_fid_find+0x1af/0x290 [ 30.824328][ C3] ? do_raw_spin_unlock+0x58/0x220 [ 30.824494][ C3] ? _raw_spin_unlock+0x23/0x40 [ 30.824750][ C3] ? __pfx_v9fs_fid_find+0x10/0x10 [ 30.824915][ C3] ? __pfx_make_vfsgid+0x10/0x10 [ 30.825080][ C3] ? _raw_spin_unlock+0x23/0x40 [ 30.825243][ C3] ? v9fs_fid_add+0xf8/0x190 [ 30.825500][ C3] p9_client_readlink+0x71/0x120 [ 30.825665][ C3] v9fs_vfs_get_link_dotl+0x94/0x1b0 [ 30.825829][ C3] ? __pfx_v9fs_vfs_get_link_dotl+0x10/0x10 [ 30.826044][ C3] ? __lookup_slow+0x209/0x3c0 [ 30.826304][ C3] pick_link+0x8b4/0x1160 [ 30.826429][ C3] ? find_held_lock+0x2c/0x110 [ 30.826593][ C3] step_into+0x84e/0xfa0 [ 30.826718][ C3] ? __up_read+0x1a7/0x780 [ 30.826883][ C3] ? __pfx_step_into+0x10/0x10 [ 30.827144][ C3] ? walk_component+0x2b6/0x4f0 [ 30.827309][ C3] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 30.827512][ C3] ? __pfx_link_path_walk.part.0.constprop.0+0x10/0x10 [ 30.827720][ C3] path_openat+0x1be/0x440 [ 30.827975][ C3] ? __pfx_path_openat+0x10/0x10 [ 30.828137][ C3] ? __lock_acquire+0xaf0/0x1570 [ 30.828304][ C3] do_filp_open+0x1b3/0x3e0 [ 30.828467][ C3] ? __pfx_do_filp_open+0x10/0x10 [ 30.828725][ C3] ? find_held_lock+0x2c/0x110 [ 30.828891][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.829054][ C3] ? alloc_fd+0x1f5/0x650 [ 30.829179][ C3] ? do_raw_spin_unlock+0x58/0x220 [ 30.829436][ C3] ? _raw_spin_unlock+0x23/0x40 [ 30.829601][ C3] ? alloc_fd+0x1f5/0x650 [ 30.829729][ C3] do_sys_openat2+0x122/0x160 [ 30.829894][ C3] ? vfs_fstatat+0x9e/0xc0 [ 30.830057][ C3] ? __pfx_do_sys_openat2+0x10/0x10 [ 30.830313][ C3] ? __pfx___do_sys_newfstatat+0x10/0x10 [ 30.830480][ C3] __x64_sys_openat+0x123/0x1e0 [ 30.830644][ C3] ? __pfx___x64_sys_openat+0x10/0x10 [ 30.830810][ C3] ? __pfx_do_faccessat+0x10/0x10 [ 30.831070][ C3] do_syscall_64+0xc6/0x1e0 [ 30.831234][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.831436][ C3] RIP: 0033:0x7f26cf7b30e8 [ 30.831606][ C3] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7 [ 30.832280][ C3] RSP: 002b:00007ffde53c9768 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 30.832619][ C3] RAX: ffffffffffffffda RBX: 00007ffde53c99ff RCX: 00007f26cf7b30e8 [ 30.832860][ C3] RDX: 0000000000080000 RSI: 00007ffde53c97e0 RDI: 00000000ffffff9c [ 30.833112][ C3] RBP: 00007ffde53c97d0 R08: 0000000000080000 R09: 00007ffde53c97e0 [ 30.833449][ C3] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffde53c97e7 [ 30.833694][ C3] R13: 00007ffde53c9a10 R14: 00007ffde53c97e0 R15: 00007f26cf784000 [ 30.834044][ C3]