[ 23.886336][ T236] ip (236) used greatest stack depth: 24136 bytes left [ 32.556136][ C3] [ 32.556313][ C3] ======================================================== [ 32.556523][ C3] WARNING: possible irq lock inversion dependency detected [ 32.556719][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 32.556850][ C3] -------------------------------------------------------- [ 32.557046][ C3] swapper/3/0 just changed the state of lock: [ 32.557210][ C3] ffff888006a8a580 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 32.557462][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 32.557667][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 32.557671][ C3] [ 32.557671][ C3] [ 32.557671][ C3] and interrupts could create inverse lock ordering between them. [ 32.557671][ C3] [ 32.558161][ C3] [ 32.558161][ C3] other info that might help us debug this: [ 32.558352][ C3] Possible interrupt unsafe locking scenario: [ 32.558352][ C3] [ 32.558552][ C3] CPU0 CPU1 [ 32.558686][ C3] ---- ---- [ 32.558815][ C3] lock(&p->alloc_lock); [ 32.558919][ C3] local_irq_disable(); [ 32.559090][ C3] lock(&ndev->lock); [ 32.559259][ C3] lock(&p->alloc_lock); [ 32.559423][ C3] [ 32.559521][ C3] lock(&ndev->lock); [ 32.559622][ C3] [ 32.559622][ C3] *** DEADLOCK *** [ 32.559622][ C3] [ 32.559816][ C3] 1 lock held by swapper/3/0: [ 32.559951][ C3] #0: ffffc90000288d68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 32.560213][ C3] [ 32.560213][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 32.560448][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 32.560591][ C3] HARDIRQ-ON-W at: [ 32.560696][ C3] __lock_acquire+0x797/0x1570 [ 32.560869][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.561038][ C3] _raw_spin_lock+0x30/0x40 [ 32.561229][ C3] set_mems_allowed+0x1d/0x210 [ 32.561398][ C3] kernel_init_freeable+0x72/0x310 [ 32.561567][ C3] kernel_init+0x20/0x200 [ 32.561734][ C3] ret_from_fork+0x31/0x70 [ 32.561902][ C3] ret_from_fork_asm+0x1a/0x30 [ 32.562069][ C3] SOFTIRQ-ON-W at: [ 32.562171][ C3] __lock_acquire+0x797/0x1570 [ 32.562336][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.562500][ C3] _raw_spin_lock+0x30/0x40 [ 32.562668][ C3] set_mems_allowed+0x1d/0x210 [ 32.562834][ C3] kernel_init_freeable+0x72/0x310 [ 32.562998][ C3] kernel_init+0x20/0x200 [ 32.563167][ C3] ret_from_fork+0x31/0x70 [ 32.563332][ C3] ret_from_fork_asm+0x1a/0x30 [ 32.563496][ C3] INITIAL USE at: [ 32.563596][ C3] __lock_acquire+0x797/0x1570 [ 32.563764][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.563929][ C3] _raw_spin_lock+0x30/0x40 [ 32.564101][ C3] set_mems_allowed+0x1d/0x210 [ 32.564283][ C3] kernel_init_freeable+0x72/0x310 [ 32.564449][ C3] kernel_init+0x20/0x200 [ 32.564617][ C3] ret_from_fork+0x31/0x70 [ 32.564788][ C3] ret_from_fork_asm+0x1a/0x30 [ 32.564975][ C3] } [ 32.565044][ C3] ... key at: [] __key.387+0x0/0x40 [ 32.565246][ C3] ... acquired at: [ 32.565345][ C3] __lock_acquire+0xaf0/0x1570 [ 32.565481][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.565612][ C3] _raw_spin_lock+0x30/0x40 [ 32.565744][ C3] __get_task_comm+0x27/0x70 [ 32.565876][ C3] ref_tracker_alloc+0x2ee/0x490 [ 32.566014][ C3] netdev_get_by_index+0x5e/0x80 [ 32.566147][ C3] fib6_nh_init+0x3d8/0x15b0 [ 32.566287][ C3] ip6_route_info_create+0xf18/0x17d0 [ 32.566419][ C3] addrconf_f6i_alloc+0x265/0x560 [ 32.566549][ C3] __ipv6_dev_ac_inc+0x25f/0xb10 [ 32.566684][ C3] addrconf_join_anycast+0x1c0/0x220 [ 32.566819][ C3] dev_forward_change+0x2a6/0x7b0 [ 32.566951][ C3] addrconf_fixup_forwarding+0x23f/0x460 [ 32.567115][ C3] addrconf_sysctl_forward+0x212/0x2b0 [ 32.567251][ C3] proc_sys_call_handler+0x403/0x5e0 [ 32.567385][ C3] vfs_write+0x9e5/0x10a0 [ 32.567516][ C3] ksys_write+0xf5/0x1e0 [ 32.567647][ C3] do_syscall_64+0xc6/0x1e0 [ 32.567783][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 32.567948][ C3] [ 32.568016][ C3] -> (&ndev->lock){++-.}-{2:2} { [ 32.568166][ C3] HARDIRQ-ON-W at: [ 32.568268][ C3] __lock_acquire+0x797/0x1570 [ 32.568442][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.568606][ C3] _raw_write_lock_bh+0x38/0x50 [ 32.568774][ C3] addrconf_permanent_addr+0x6e/0x670 [ 32.568945][ C3] addrconf_notify+0x749/0xd60 [ 32.569112][ C3] notifier_call_chain+0xcd/0x150 [ 32.569279][ C3] __dev_notify_flags+0xe6/0x250 [ 32.569449][ C3] dev_change_flags+0xec/0x160 [ 32.569614][ C3] do_setlink+0x7d6/0x21e0 [ 32.569831][ C3] __rtnl_newlink+0xaa7/0xd80 [ 32.570559][ C3] rtnl_newlink+0x63/0xa0 [ 32.570819][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 32.571064][ C3] netlink_rcv_skb+0x130/0x360 [ 32.571340][ C3] netlink_unicast+0x449/0x710 [ 32.571577][ C3] netlink_sendmsg+0x723/0xbe0 [ 32.571751][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 32.571919][ C3] ___sys_sendmsg+0xee/0x170 [ 32.572085][ C3] __sys_sendmsg+0xcd/0x170 [ 32.572256][ C3] do_syscall_64+0xc6/0x1e0 [ 32.572424][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 32.572643][ C3] HARDIRQ-ON-R at: [ 32.572751][ C3] __lock_acquire+0x797/0x1570 [ 32.572920][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.573087][ C3] _raw_read_lock_bh+0x44/0x80 [ 32.573255][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 32.573434][ C3] inet6_fill_link_af+0x5e/0xe0 [ 32.573604][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 32.573778][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 32.573978][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 32.574176][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 32.574340][ C3] register_netdevice+0x1177/0x1690 [ 32.574507][ C3] register_netdev+0x20/0x40 [ 32.574673][ C3] sit_init_net+0x250/0x4f0 [ 32.574854][ C3] ops_init+0x9b/0x560 [ 32.574994][ C3] register_pernet_operations+0x2db/0x710 [ 32.575195][ C3] register_pernet_device+0x2a/0x60 [ 32.575362][ C3] sit_init+0x23/0xe0 [ 32.575497][ C3] do_one_initcall+0x8d/0x1e0 [ 32.575671][ C3] do_initcalls+0x1b2/0x3e0 [ 32.575844][ C3] kernel_init_freeable+0x232/0x310 [ 32.576010][ C3] kernel_init+0x20/0x200 [ 32.576181][ C3] ret_from_fork+0x31/0x70 [ 32.576353][ C3] ret_from_fork_asm+0x1a/0x30 [ 32.576520][ C3] IN-SOFTIRQ-W at: [ 32.576619][ C3] __lock_acquire+0x797/0x1570 [ 32.576789][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.576957][ C3] _raw_write_lock+0x30/0x40 [ 32.577123][ C3] addrconf_rs_timer+0xa9/0x730 [ 32.577290][ C3] call_timer_fn+0x13b/0x230 [ 32.577462][ C3] __run_timers+0x545/0x810 [ 32.577627][ C3] run_timer_softirq+0xe8/0x1b0 [ 32.577791][ C3] __do_softirq+0x1f8/0x5df [ 32.577958][ C3] irq_exit_rcu+0x97/0xc0 [ 32.578130][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 32.578329][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 32.578529][ C3] default_idle+0xf/0x20 [ 32.578698][ C3] default_idle_call+0x6d/0xb0 [ 32.578865][ C3] cpuidle_idle_call+0x1f4/0x280 [ 32.579032][ C3] do_idle+0xf9/0x160 [ 32.579169][ C3] cpu_startup_entry+0x54/0x60 [ 32.579338][ C3] start_secondary+0x21c/0x2b0 [ 32.579511][ C3] common_startup_64+0x12c/0x138 [ 32.579680][ C3] INITIAL USE at: [ 32.579779][ C3] __lock_acquire+0x797/0x1570 [ 32.579947][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.580112][ C3] _raw_write_lock_bh+0x38/0x50 [ 32.580286][ C3] addrconf_permanent_addr+0x6e/0x670 [ 32.580448][ C3] addrconf_notify+0x749/0xd60 [ 32.580613][ C3] notifier_call_chain+0xcd/0x150 [ 32.580780][ C3] __dev_notify_flags+0xe6/0x250 [ 32.580946][ C3] dev_change_flags+0xec/0x160 [ 32.581111][ C3] do_setlink+0x7d6/0x21e0 [ 32.581277][ C3] __rtnl_newlink+0xaa7/0xd80 [ 32.581445][ C3] rtnl_newlink+0x63/0xa0 [ 32.581609][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 32.581775][ C3] netlink_rcv_skb+0x130/0x360 [ 32.581939][ C3] netlink_unicast+0x449/0x710 [ 32.582104][ C3] netlink_sendmsg+0x723/0xbe0 [ 32.582271][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 32.582442][ C3] ___sys_sendmsg+0xee/0x170 [ 32.582608][ C3] __sys_sendmsg+0xcd/0x170 [ 32.582775][ C3] do_syscall_64+0xc6/0x1e0 [ 32.582941][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 32.583140][ C3] INITIAL READ USE at: [ 32.583240][ C3] __lock_acquire+0x797/0x1570 [ 32.583406][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.583570][ C3] _raw_read_lock_bh+0x44/0x80 [ 32.583736][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 32.583934][ C3] inet6_fill_link_af+0x5e/0xe0 [ 32.584098][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 32.584265][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 32.584466][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 32.584663][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 32.584843][ C3] register_netdevice+0x1177/0x1690 [ 32.585041][ C3] register_netdev+0x20/0x40 [ 32.585206][ C3] sit_init_net+0x250/0x4f0 [ 32.585454][ C3] ops_init+0x9b/0x560 [ 32.585625][ C3] register_pernet_operations+0x2db/0x710 [ 32.585822][ C3] register_pernet_device+0x2a/0x60 [ 32.586097][ C3] sit_init+0x23/0xe0 [ 32.586264][ C3] do_one_initcall+0x8d/0x1e0 [ 32.586432][ C3] do_initcalls+0x1b2/0x3e0 [ 32.586601][ C3] kernel_init_freeable+0x232/0x310 [ 32.586875][ C3] kernel_init+0x20/0x200 [ 32.587041][ C3] ret_from_fork+0x31/0x70 [ 32.587216][ C3] ret_from_fork_asm+0x1a/0x30 [ 32.587457][ C3] } [ 32.587526][ C3] ... key at: [] __key.37+0x0/0x40 [ 32.587725][ C3] ... acquired at: [ 32.587823][ C3] mark_lock+0x28d/0x3e0 [ 32.588035][ C3] mark_usage+0xd9/0x2a0 [ 32.588168][ C3] __lock_acquire+0x797/0x1570 [ 32.588302][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.588433][ C3] _raw_write_lock+0x30/0x40 [ 32.588638][ C3] addrconf_rs_timer+0xa9/0x730 [ 32.588770][ C3] call_timer_fn+0x13b/0x230 [ 32.588905][ C3] __run_timers+0x545/0x810 [ 32.589037][ C3] run_timer_softirq+0xe8/0x1b0 [ 32.589168][ C3] __do_softirq+0x1f8/0x5df [ 32.589377][ C3] irq_exit_rcu+0x97/0xc0 [ 32.589510][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 32.589673][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 32.589915][ C3] default_idle+0xf/0x20 [ 32.590047][ C3] default_idle_call+0x6d/0xb0 [ 32.590179][ C3] cpuidle_idle_call+0x1f4/0x280 [ 32.590312][ C3] do_idle+0xf9/0x160 [ 32.590411][ C3] cpu_startup_entry+0x54/0x60 [ 32.590618][ C3] start_secondary+0x21c/0x2b0 [ 32.590758][ C3] common_startup_64+0x12c/0x138 [ 32.590891][ C3] [ 32.590959][ C3] [ 32.590959][ C3] stack backtrace: [ 32.591192][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 32.591390][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 32.591678][ C3] Call Trace: [ 32.591861][ C3] [ 32.591939][ C3] dump_stack_lvl+0x82/0xd0 [ 32.592076][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 32.592239][ C3] ? kernel_text_address+0x17/0xe0 [ 32.592373][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 32.592614][ C3] ? __pfx_usage_skip+0x10/0x10 [ 32.592746][ C3] ? __pfx_usage_match+0x10/0x10 [ 32.592879][ C3] ? arch_stack_walk+0x8c/0xf0 [ 32.593030][ C3] mark_lock_irq+0x4cd/0xa10 [ 32.593316][ C3] ? common_startup_64+0x12c/0x138 [ 32.593450][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 32.593582][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 32.593716][ C3] ? save_trace+0x8f/0x5b0 [ 32.593925][ C3] mark_lock+0x28d/0x3e0 [ 32.594023][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 32.594155][ C3] mark_usage+0xd9/0x2a0 [ 32.594259][ C3] __lock_acquire+0x797/0x1570 [ 32.594392][ C3] ? __pfx_validate_chain+0x10/0x10 [ 32.594599][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 32.594730][ C3] lock_acquire.part.0+0xeb/0x330 [ 32.594894][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 32.595049][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 32.595255][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 32.595388][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 32.595522][ C3] ? lock_acquire+0x32/0xc0 [ 32.595656][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 32.595862][ C3] _raw_write_lock+0x30/0x40 [ 32.595994][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 32.596125][ C3] addrconf_rs_timer+0xa9/0x730 [ 32.596257][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 32.596463][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 32.596595][ C3] ? call_timer_fn+0xe8/0x230 [ 32.596729][ C3] ? lock_acquire+0x32/0xc0 [ 32.596867][ C3] ? call_timer_fn+0xe8/0x230 [ 32.597001][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 32.597206][ C3] call_timer_fn+0x13b/0x230 [ 32.597335][ C3] ? call_timer_fn+0xe8/0x230 [ 32.597467][ C3] ? call_timer_fn+0xe8/0x230 [ 32.597599][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 32.597808][ C3] ? mark_lock+0x38/0x3e0 [ 32.597912][ C3] __run_timers+0x545/0x810 [ 32.598044][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 32.598178][ C3] ? __pfx___run_timers+0x10/0x10 [ 32.598385][ C3] ? do_raw_spin_lock+0x131/0x270 [ 32.598520][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 32.598654][ C3] ? lock_acquire+0x32/0xc0 [ 32.598788][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 32.598922][ C3] run_timer_softirq+0xe8/0x1b0 [ 32.599131][ C3] __do_softirq+0x1f8/0x5df [ 32.599263][ C3] irq_exit_rcu+0x97/0xc0 [ 32.599365][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 32.599495][ C3] [ 32.599657][ C3] [ 32.599803][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 32.599971][ C3] RIP: 0010:default_idle+0xf/0x20 [ 32.600110][ C3] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d a3 30 35 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 32.600661][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 32.600830][ C3] RAX: 000000000006b785 RBX: 1ffff9200002dfc1 RCX: ffffffff9730e9d5 [ 32.601111][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff94caa4a4 [ 32.601304][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 32.601501][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 32.601778][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 32.601986][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 32.602120][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 32.602256][ C3] default_idle_call+0x6d/0xb0 [ 32.602463][ C3] cpuidle_idle_call+0x1f4/0x280 [ 32.602596][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 32.602727][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 32.602865][ C3] do_idle+0xf9/0x160 [ 32.603041][ C3] cpu_startup_entry+0x54/0x60 [ 32.603172][ C3] start_secondary+0x21c/0x2b0 [ 32.603302][ C3] ? __pfx_start_secondary+0x10/0x10 [ 32.603434][ C3] common_startup_64+0x12c/0x138 [ 32.603711][ C3] [ 48.641256][ T374] Initializing XFRM netlink socket