[ 28.458605][ T238] ip (238) used greatest stack depth: 23744 bytes left [ 32.929357][ T286] br0: port 1(veth1) entered blocking state [ 32.930145][ T286] br0: port 1(veth1) entered disabled state [ 32.931670][ T286] veth1: entered allmulticast mode [ 32.934146][ T286] veth1: entered promiscuous mode [ 33.088494][ T288] br0: port 2(veth2) entered blocking state [ 33.088763][ T288] br0: port 2(veth2) entered disabled state [ 33.089018][ T288] veth2: entered allmulticast mode [ 33.090970][ T288] veth2: entered promiscuous mode [ 33.359856][ T24] br0: port 1(veth1) entered blocking state [ 33.360216][ T24] br0: port 1(veth1) entered forwarding state [ 33.493482][ T50] br0: port 2(veth2) entered blocking state [ 33.493823][ T50] br0: port 2(veth2) entered forwarding state [ 45.548745][ T314] GACT probability NOT on [ 48.513739][ C3] [ 48.513932][ C3] ======================================================== [ 48.514263][ C3] WARNING: possible irq lock inversion dependency detected [ 48.514585][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 48.514800][ C3] -------------------------------------------------------- [ 48.515111][ C3] swapper/3/0 just changed the state of lock: [ 48.515402][ C3] ffff888005d4ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.515954][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 48.516293][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 48.516300][ C3] [ 48.516300][ C3] [ 48.516300][ C3] and interrupts could create inverse lock ordering between them. [ 48.516300][ C3] [ 48.517092][ C3] [ 48.517092][ C3] other info that might help us debug this: [ 48.517406][ C3] Chain exists of: [ 48.517406][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 48.517406][ C3] [ 48.517936][ C3] Possible interrupt unsafe locking scenario: [ 48.517936][ C3] [ 48.518253][ C3] CPU0 CPU1 [ 48.518467][ C3] ---- ---- [ 48.518706][ C3] lock(&p->alloc_lock); [ 48.518907][ C3] local_irq_disable(); [ 48.519203][ C3] lock(&br->lock); [ 48.519467][ C3] lock(lweventlist_lock); [ 48.519751][ C3] [ 48.519912][ C3] lock(&br->lock); [ 48.520080][ C3] [ 48.520080][ C3] *** DEADLOCK *** [ 48.520080][ C3] [ 48.520394][ C3] 1 lock held by swapper/3/0: [ 48.520619][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 48.521049][ C3] [ 48.521049][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 48.521305][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 48.521448][ C3] HARDIRQ-ON-W at: [ 48.521589][ C3] __lock_acquire+0x797/0x1570 [ 48.521834][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.522074][ C3] _raw_spin_lock+0x30/0x40 [ 48.522342][ C3] set_mems_allowed+0x1d/0x210 [ 48.522589][ C3] kernel_init_freeable+0x72/0x310 [ 48.522850][ C3] kernel_init+0x20/0x200 [ 48.523155][ C3] ret_from_fork+0x31/0x70 [ 48.523450][ C3] ret_from_fork_asm+0x1a/0x30 [ 48.523741][ C3] SOFTIRQ-ON-W at: [ 48.523864][ C3] __lock_acquire+0x797/0x1570 [ 48.524058][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.524304][ C3] _raw_spin_lock+0x30/0x40 [ 48.524570][ C3] set_mems_allowed+0x1d/0x210 [ 48.524834][ C3] kernel_init_freeable+0x72/0x310 [ 48.525098][ C3] kernel_init+0x20/0x200 [ 48.525364][ C3] ret_from_fork+0x31/0x70 [ 48.525669][ C3] ret_from_fork_asm+0x1a/0x30 [ 48.525936][ C3] INITIAL USE at: [ 48.526104][ C3] __lock_acquire+0x797/0x1570 [ 48.526388][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.526672][ C3] _raw_spin_lock+0x30/0x40 [ 48.526964][ C3] set_mems_allowed+0x1d/0x210 [ 48.527262][ C3] kernel_init_freeable+0x72/0x310 [ 48.527548][ C3] kernel_init+0x20/0x200 [ 48.527829][ C3] ret_from_fork+0x31/0x70 [ 48.528100][ C3] ret_from_fork_asm+0x1a/0x30 [ 48.528389][ C3] } [ 48.528507][ C3] ... key at: [] __key.387+0x0/0x40 [ 48.528843][ C3] ... acquired at: [ 48.529012][ C3] __lock_acquire+0xaf0/0x1570 [ 48.529229][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.529452][ C3] _raw_spin_lock+0x30/0x40 [ 48.529669][ C3] __get_task_comm+0x27/0x70 [ 48.529886][ C3] ref_tracker_alloc+0x2ee/0x490 [ 48.530126][ C3] linkwatch_fire_event+0x196/0x200 [ 48.530342][ C3] veth_newlink+0x367/0x830 [veth] [ 48.530604][ C3] rtnl_newlink_create+0x341/0x850 [ 48.530831][ C3] __rtnl_newlink+0xac9/0xd80 [ 48.531049][ C3] rtnl_newlink+0x63/0xa0 [ 48.531270][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.531484][ C3] netlink_rcv_skb+0x130/0x360 [ 48.531737][ C3] netlink_unicast+0x449/0x710 [ 48.531950][ C3] netlink_sendmsg+0x723/0xbe0 [ 48.532166][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 48.532386][ C3] ___sys_sendmsg+0xee/0x170 [ 48.532603][ C3] __sys_sendmsg+0xcd/0x170 [ 48.532825][ C3] do_syscall_64+0xc6/0x1e0 [ 48.533048][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.533345][ C3] [ 48.533430][ C3] -> (lweventlist_lock){....}-{2:2} { [ 48.533571][ C3] INITIAL USE at: [ 48.533675][ C3] __lock_acquire+0x797/0x1570 [ 48.533853][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.534062][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.534253][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 48.534535][ C3] rtnl_getlink+0x4c9/0x970 [ 48.534776][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.535039][ C3] netlink_rcv_skb+0x130/0x360 [ 48.535313][ C3] netlink_unicast+0x449/0x710 [ 48.535610][ C3] netlink_sendmsg+0x723/0xbe0 [ 48.535906][ C3] __sys_sendto+0x37d/0x410 [ 48.536183][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 48.536387][ C3] do_syscall_64+0xc6/0x1e0 [ 48.536641][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.536982][ C3] } [ 48.537105][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 48.537438][ C3] ... acquired at: [ 48.537621][ C3] __lock_acquire+0xaf0/0x1570 [ 48.537851][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.538078][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.538310][ C3] linkwatch_fire_event+0x74/0x200 [ 48.538535][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 48.538889][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 48.539260][ C3] dev_set_mac_address+0x28a/0x410 [ 48.539520][ C3] dev_set_mac_address_user+0x31/0x50 [ 48.539734][ C3] do_setlink+0x17b4/0x21e0 [ 48.539970][ C3] rtnl_setlink+0x1f7/0x310 [ 48.540205][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.540465][ C3] netlink_rcv_skb+0x130/0x360 [ 48.540701][ C3] netlink_unicast+0x449/0x710 [ 48.540928][ C3] netlink_sendmsg+0x723/0xbe0 [ 48.541162][ C3] __sys_sendto+0x37d/0x410 [ 48.541403][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 48.541618][ C3] do_syscall_64+0xc6/0x1e0 [ 48.541858][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.542143][ C3] [ 48.542263][ C3] -> (&br->lock){+.-.}-{2:2} { [ 48.542500][ C3] HARDIRQ-ON-W at: [ 48.542675][ C3] __lock_acquire+0x797/0x1570 [ 48.542962][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.543255][ C3] _raw_spin_lock_bh+0x38/0x50 [ 48.543545][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 48.543955][ C3] dev_set_mac_address+0x28a/0x410 [ 48.544242][ C3] dev_set_mac_address_user+0x31/0x50 [ 48.544558][ C3] do_setlink+0x17b4/0x21e0 [ 48.544830][ C3] rtnl_setlink+0x1f7/0x310 [ 48.545138][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.545426][ C3] netlink_rcv_skb+0x130/0x360 [ 48.545732][ C3] netlink_unicast+0x449/0x710 [ 48.546008][ C3] netlink_sendmsg+0x723/0xbe0 [ 48.546200][ C3] __sys_sendto+0x37d/0x410 [ 48.546417][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 48.546674][ C3] do_syscall_64+0xc6/0x1e0 [ 48.546913][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.547258][ C3] IN-SOFTIRQ-W at: [ 48.547407][ C3] __lock_acquire+0x797/0x1570 [ 48.547663][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.547936][ C3] _raw_spin_lock+0x30/0x40 [ 48.548203][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.548631][ C3] call_timer_fn+0x13b/0x230 [ 48.548850][ C3] __run_timers+0x545/0x810 [ 48.549045][ C3] run_timer_softirq+0xe8/0x1b0 [ 48.549289][ C3] __do_softirq+0x1f8/0x5df [ 48.549572][ C3] irq_exit_rcu+0x97/0xc0 [ 48.549842][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.550167][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.550671][ C3] default_idle+0xf/0x20 [ 48.551147][ C3] default_idle_call+0x6d/0xb0 [ 48.551417][ C3] cpuidle_idle_call+0x1f4/0x280 [ 48.551739][ C3] do_idle+0xf9/0x160 [ 48.551961][ C3] cpu_startup_entry+0x54/0x60 [ 48.552381][ C3] start_secondary+0x21c/0x2b0 [ 48.552681][ C3] common_startup_64+0x12c/0x138 [ 48.552961][ C3] INITIAL USE at: [ 48.553137][ C3] __lock_acquire+0x797/0x1570 [ 48.553561][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.553828][ C3] _raw_spin_lock_bh+0x38/0x50 [ 48.554134][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 48.554678][ C3] dev_set_mac_address+0x28a/0x410 [ 48.554957][ C3] dev_set_mac_address_user+0x31/0x50 [ 48.555231][ C3] do_setlink+0x17b4/0x21e0 [ 48.555857][ C3] rtnl_setlink+0x1f7/0x310 [ 48.556153][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.556443][ C3] netlink_rcv_skb+0x130/0x360 [ 48.556741][ C3] netlink_unicast+0x449/0x710 [ 48.557054][ C3] netlink_sendmsg+0x723/0xbe0 [ 48.557364][ C3] __sys_sendto+0x37d/0x410 [ 48.557659][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 48.558098][ C3] do_syscall_64+0xc6/0x1e0 [ 48.558423][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.558750][ C3] } [ 48.558826][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 48.559193][ C3] ... acquired at: [ 48.559300][ C3] mark_lock+0x28d/0x3e0 [ 48.559452][ C3] mark_usage+0xd9/0x2a0 [ 48.559684][ C3] __lock_acquire+0x797/0x1570 [ 48.560003][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.560197][ C3] _raw_spin_lock+0x30/0x40 [ 48.560408][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.560739][ C3] call_timer_fn+0x13b/0x230 [ 48.561010][ C3] __run_timers+0x545/0x810 [ 48.561226][ C3] run_timer_softirq+0xe8/0x1b0 [ 48.561404][ C3] __do_softirq+0x1f8/0x5df [ 48.561652][ C3] irq_exit_rcu+0x97/0xc0 [ 48.561889][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.562082][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.562373][ C3] default_idle+0xf/0x20 [ 48.562598][ C3] default_idle_call+0x6d/0xb0 [ 48.562983][ C3] cpuidle_idle_call+0x1f4/0x280 [ 48.563203][ C3] do_idle+0xf9/0x160 [ 48.563391][ C3] cpu_startup_entry+0x54/0x60 [ 48.563628][ C3] start_secondary+0x21c/0x2b0 [ 48.563864][ C3] common_startup_64+0x12c/0x138 [ 48.564104][ C3] [ 48.564217][ C3] [ 48.564217][ C3] stack backtrace: [ 48.564483][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 48.564975][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 48.565448][ C3] Call Trace: [ 48.565611][ C3] [ 48.565728][ C3] dump_stack_lvl+0x82/0xd0 [ 48.566108][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 48.566422][ C3] ? common_startup_64+0x12c/0x138 [ 48.566639][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 48.566920][ C3] ? __pfx_usage_skip+0x10/0x10 [ 48.567271][ C3] ? __pfx_usage_match+0x10/0x10 [ 48.567515][ C3] ? arch_stack_walk+0x8c/0xf0 [ 48.567747][ C3] mark_lock_irq+0x4cd/0xa10 [ 48.567966][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 48.568322][ C3] ? stack_trace_save+0x94/0xd0 [ 48.568541][ C3] ? add_chain_cache+0x248/0x8b0 [ 48.568762][ C3] ? save_trace+0x8f/0x5b0 [ 48.568978][ C3] mark_lock+0x28d/0x3e0 [ 48.569285][ C3] mark_usage+0xd9/0x2a0 [ 48.569453][ C3] __lock_acquire+0x797/0x1570 [ 48.569671][ C3] ? __lock_acquire+0xaf0/0x1570 [ 48.569884][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.570412][ C3] lock_acquire.part.0+0xeb/0x330 [ 48.570830][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.571169][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.571387][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 48.571702][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.571925][ C3] ? lock_acquire+0x32/0xc0 [ 48.572064][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.572285][ C3] _raw_spin_lock+0x30/0x40 [ 48.572577][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.572834][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.573147][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.573590][ C3] call_timer_fn+0x13b/0x230 [ 48.573793][ C3] ? call_timer_fn+0xe8/0x230 [ 48.573975][ C3] ? call_timer_fn+0xe8/0x230 [ 48.574151][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 48.574333][ C3] ? mark_lock+0x38/0x3e0 [ 48.574486][ C3] __run_timers+0x545/0x810 [ 48.574706][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.575082][ C3] ? __pfx___run_timers+0x10/0x10 [ 48.575280][ C3] ? do_raw_spin_lock+0x131/0x270 [ 48.575614][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 48.575825][ C3] ? lock_acquire+0x32/0xc0 [ 48.576040][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 48.576311][ C3] run_timer_softirq+0xe8/0x1b0 [ 48.576668][ C3] __do_softirq+0x1f8/0x5df [ 48.576929][ C3] irq_exit_rcu+0x97/0xc0 [ 48.577120][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.577341][ C3] [ 48.577452][ C3] [ 48.577708][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.577999][ C3] RIP: 0010:default_idle+0xf/0x20 [ 48.578231][ 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 93 20 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 [ 48.578996][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 48.579269][ C3] RAX: 0000000000079deb RBX: 1ffff9200002dfc1 RCX: ffffffff94b0f9e5 [ 48.579740][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff924aa4a4 [ 48.580051][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f3709c [ 48.580409][ C3] R10: ffff88802f9b84e3 R11: ffff88802f9ad9b0 R12: 0000000000000000 [ 48.580761][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 48.581081][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 48.581299][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 48.581521][ C3] default_idle_call+0x6d/0xb0 [ 48.581875][ C3] cpuidle_idle_call+0x1f4/0x280 [ 48.582089][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 48.582314][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 48.582550][ C3] do_idle+0xf9/0x160 [ 48.582716][ C3] cpu_startup_entry+0x54/0x60 [ 48.582959][ C3] start_secondary+0x21c/0x2b0 [ 48.583179][ C3] ? __pfx_start_secondary+0x10/0x10 [ 48.583394][ C3] common_startup_64+0x12c/0x138 [ 48.583626][ C3] [ 229.300244][ T1504] br0: port 2(veth2) entered disabled state [ 229.389526][ T1505] br0: port 1(veth1) entered disabled state [ 229.502119][ T1506] veth2: left allmulticast mode [ 229.502312][ T1506] veth2: left promiscuous mode [ 229.502587][ T1506] br0: port 2(veth2) entered disabled state [ 229.503529][ T1506] veth1: left allmulticast mode [ 229.503705][ T1506] veth1: left promiscuous mode [ 229.503980][ T1506] br0: port 1(veth1) entered disabled state