[ 50.573442][ T1366] nstat (1366) used greatest stack depth: 23600 bytes left [ 50.573458][ T1366] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 50.573460][ T1366] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1366, name: nstat [ 50.573462][ T1366] preempt_count: 2, expected: 0 [ 50.573463][ T1366] RCU nest depth: 0, expected: 0 [ 50.573464][ T1366] locks held by nstat/1366: 5, last CPU#3: [ 50.573466][ T1366] #0: ffffffffa98267b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 50.573478][ T1366] #1: ffffffffa998dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 50.573484][ T1366] #2: ffffffffa998dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 50.573488][ T1366] #3: ffffffffa98ad660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 50.573491][ T1366] #4: ffffffffa98ad560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 50.573495][ T1366] irq event stamp: 41114 [ 50.573496][ T1366] hardirqs last enabled at (41113): [] __down_trylock_console_sem+0x86/0xa0 [ 50.573498][ T1366] hardirqs last disabled at (41114): [] console_emit_next_record+0x3d4/0x4c0 [ 50.573500][ T1366] softirqs last enabled at (36100): [] handle_softirqs+0x67c/0x900 [ 50.573502][ T1366] softirqs last disabled at (36093): [] __irq_exit_rcu+0x145/0x1c0 [ 50.573504][ T1366] Preemption disabled at: [ 50.573504][ T1366] [<0000000000000000>] 0x0 [ 50.573511][ T1366] CPU: 3 UID: 0 PID: 1366 Comm: nstat Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 50.573515][ T1366] Tainted: [W]=WARN [ 50.573516][ T1366] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 50.573517][ T1366] Call Trace: [ 50.573519][ T1366] [ 50.573520][ T1366] dump_stack_lvl+0x6f/0xa0 [ 50.573526][ T1366] __might_resched.cold+0x1fe/0x2c1 [ 50.573531][ T1366] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 50.573535][ T1366] ? __kmalloc_noprof+0xdb/0x760 [ 50.573539][ T1366] __kmalloc_noprof+0x443/0x760 [ 50.573542][ T1366] ? alloc_buf.isra.0+0x4b/0x260 [ 50.573548][ T1366] ? do_raw_spin_unlock+0x59/0x250 [ 50.573550][ T1366] alloc_buf.isra.0+0x4b/0x260 [ 50.573554][ T1366] put_chars+0x1e1/0x2f0 [ 50.573557][ T1366] ? __send_to_port+0x420/0x420 [ 50.573559][ T1366] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 50.573563][ T1366] ? validate_chain+0x38b/0xc20 [ 50.573568][ T1366] hvc_console_print+0x292/0x780 [ 50.573576][ T1366] ? hvc_write+0x3a0/0x3a0 [ 50.573578][ T1366] ? rcu_is_watching+0x16/0xd0 [ 50.573580][ T1366] ? lock_acquire+0x13c/0x160 [ 50.573584][ T1366] console_emit_next_record+0x22f/0x4c0 [ 50.573587][ T1366] ? devkmsg_read+0x4b0/0x4b0 [ 50.573589][ T1366] ? console_flush_one_record+0x106/0x710 [ 50.573592][ T1366] ? rcu_is_watching+0x16/0xd0 [ 50.573594][ T1366] ? lock_acquire+0x13c/0x160 [ 50.573597][ T1366] console_flush_one_record+0x46f/0x710 [ 50.573601][ T1366] ? console_emit_next_record+0x4c0/0x4c0 [ 50.573603][ T1366] ? __lock_acquire+0x518/0xc20 [ 50.573608][ T1366] console_unlock+0xee/0x1f0 [ 50.573610][ T1366] ? console_flush_one_record+0x710/0x710 [ 50.573612][ T1366] ? rcu_is_watching+0x16/0xd0 [ 50.573614][ T1366] ? lock_acquire+0x60/0x160 [ 50.573617][ T1366] ? __down_trylock_console_sem+0x5e/0xa0 [ 50.573619][ T1366] ? vprintk_emit+0x320/0x3e0 [ 50.573622][ T1366] vprintk_emit+0x37c/0x3e0 [ 50.573625][ T1366] ? wake_up_klogd_work_func+0x90/0x90 [ 50.573628][ T1366] ? __lock_acquire+0x518/0xc20 [ 50.573632][ T1366] _printk+0xc7/0x100 [ 50.573635][ T1366] ? snapshot_read.cold+0x21/0x21 [ 50.573638][ T1366] ? do_raw_spin_lock+0x131/0x280 [ 50.573640][ T1366] ? __rwlock_init+0x150/0x150 [ 50.573644][ T1366] ? do_raw_spin_lock+0x131/0x280 [ 50.573646][ T1366] do_exit.cold+0x82/0x9c [ 50.573650][ T1366] ? exit_notify+0x890/0x890 [ 50.573652][ T1366] ? __lock_release.isra.0+0x69/0x1a0 [ 50.573654][ T1366] ? rcu_is_watching+0x16/0xd0 [ 50.573658][ T1366] do_group_exit+0xb8/0x370 [ 50.573661][ T1366] __x64_sys_exit_group+0x3c/0x50 [ 50.573663][ T1366] x64_sys_call+0x1567/0x1570 [ 50.573665][ T1366] do_syscall_64+0xff/0x530 [ 50.573669][ T1366] ? exc_page_fault+0xee/0x100 [ 50.573672][ T1366] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 50.573675][ T1366] RIP: 0033:0x7f08ff28b1b8 [ 50.573677][ T1366] Code: Unable to access opcode bytes at 0x7f08ff28b18e. [ 50.573678][ T1366] RSP: 002b:00007ffccfd2d248 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 50.573680][ T1366] RAX: ffffffffffffffda RBX: 00007f08ff3bbf88 RCX: 00007f08ff28b1b8 [ 50.573682][ T1366] RDX: 00007f08ff0b2a88 RSI: ffffffffffffffa0 RDI: 0000000000000000 [ 50.573682][ T1366] RBP: 00007ffccfd2d2a0 R08: 0000000000000000 R09: 0000000000000000 [ 50.573683][ T1366] R10: 00007ffccfd2d080 R11: 0000000000000246 R12: 0000000000000001 [ 50.573684][ T1366] R13: 0000000000000000 R14: 00007f08ff3ba680 R15: 00007f08ff3bbfa0 [ 50.573690][ T1366] [ 51.425996][ C0] clocksource: Watchdog remote CPU 1 read timed out [ 51.426092][ C0] [ 51.426095][ C0] ======================================================== [ 51.426096][ C0] WARNING: possible irq lock inversion dependency detected [ 51.426098][ C0] 7.2.0-virtme #1 Tainted: G W [ 51.426100][ C0] -------------------------------------------------------- [ 51.426100][ C0] swapper/0/0 just changed the state of lock: [ 51.426102][ C0] ffffffffa98ad660 (console_owner){..-.}-{0:0} [ 51.426101][ C1] BUG: workqueue leaked atomic, lock or RCU: mptcp_connect[1397] [ 51.426101][ C1] preempt=0x00000101 lock=1->0 RCU=0->0 workfn=tcp_tsq_workfn [ 51.426107][ C0] , at: console_lock_spinning_enable+0x40/0x60 [ 51.426113][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 51.426115][ C0] (fs_reclaim){+.+.}-{0:0} [ 51.426116][ C0] [ 51.426116][ C0] [ 51.426116][ C0] and interrupts could create inverse lock ordering between them. [ 51.426116][ C0] [ 51.426117][ C0] [ 51.426117][ C0] other info that might help us debug this: [ 51.426117][ C0] Possible interrupt unsafe locking scenario: [ 51.426117][ C0] [ 51.426118][ C0] CPU0 CPU1 [ 51.426118][ C0] ---- ---- [ 51.426119][ C0] lock(fs_reclaim); [ 51.426120][ C0] local_irq_disable(); [ 51.426120][ C0] lock(console_owner); [ 51.426121][ C0] lock(fs_reclaim); [ 51.426122][ C0] [ 51.426122][ C0] lock(console_owner); [ 51.426123][ C0] [ 51.426123][ C0] *** DEADLOCK *** [ 51.426123][ C0] [ 51.426123][ C0] locks held by swapper/0/0: 4, last CPU#0: [ 51.426125][ C0] #0: ffa0000000007c90 ((&watchdog_timer)){+.-.}-{0:0}, at: call_timer_fn+0x110/0x4d0 [ 51.426130][ C0] #1: ffffffffa99f28b8 (watchdog_lock){+.-.}-{3:3}, at: clocksource_watchdog+0x15/0x30 [ 51.426134][ C0] #2: ffffffffa998dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 51.426138][ C0] #3: ffffffffa998dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 51.426141][ C0] [ 51.426141][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 51.426145][ C0] -> (fs_reclaim){+.+.}-{0:0} { [ 51.426147][ C0] HARDIRQ-ON-W at: [ 51.426149][ C0] __lock_acquire+0x388/0xc20 [ 51.426152][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426153][ C0] fs_reclaim_acquire+0xd5/0x120 [ 51.426157][ C0] __kmalloc_cache_noprof+0x6e/0x620 [ 51.426159][ C0] kthread_create_worker_on_node+0xea/0x210 [ 51.426162][ C0] workqueue_init+0x2a/0x680 [ 51.426165][ C0] kernel_init_freeable+0x2fe/0x630 [ 51.426167][ C0] kernel_init+0x21/0x150 [ 51.426171][ C0] ret_from_fork+0x474/0x6b0 [ 51.426175][ C0] ret_from_fork_asm+0x11/0x20 [ 51.426177][ C0] SOFTIRQ-ON-W at: [ 51.426178][ C0] __lock_acquire+0x388/0xc20 [ 51.426179][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426180][ C0] fs_reclaim_acquire+0xd5/0x120 [ 51.426182][ C0] __kmalloc_cache_noprof+0x6e/0x620 [ 51.426183][ C0] kthread_create_worker_on_node+0xea/0x210 [ 51.426184][ C0] workqueue_init+0x2a/0x680 [ 51.426186][ C0] kernel_init_freeable+0x2fe/0x630 [ 51.426187][ C0] kernel_init+0x21/0x150 [ 51.426188][ C0] ret_from_fork+0x474/0x6b0 [ 51.426190][ C0] ret_from_fork_asm+0x11/0x20 [ 51.426191][ C0] INITIAL USE at: [ 51.426192][ C0] __lock_acquire+0x388/0xc20 [ 51.426193][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426194][ C0] fs_reclaim_acquire+0xd5/0x120 [ 51.426196][ C0] __kmalloc_cache_noprof+0x6e/0x620 [ 51.426197][ C0] kthread_create_worker_on_node+0xea/0x210 [ 51.426198][ C0] workqueue_init+0x2a/0x680 [ 51.426199][ C0] kernel_init_freeable+0x2fe/0x630 [ 51.426200][ C0] kernel_init+0x21/0x150 [ 51.426202][ C0] ret_from_fork+0x474/0x6b0 [ 51.426203][ C0] ret_from_fork_asm+0x11/0x20 [ 51.426205][ C0] } [ 51.426205][ C0] ... key at: [] __fs_reclaim_map+0x0/0xbe0 [ 51.426209][ C0] ... acquired at: [ 51.426210][ C0] __lock_acquire+0x518/0xc20 [ 51.426211][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426212][ C0] fs_reclaim_acquire+0xd5/0x120 [ 51.426213][ C0] __kmalloc_noprof+0xd3/0x760 [ 51.426214][ C0] alloc_buf.isra.0+0x4b/0x260 [ 51.426218][ C0] put_chars+0x1e1/0x2f0 [ 51.426219][ C0] hvc_console_print+0x292/0x780 [ 51.426222][ C0] console_emit_next_record+0x22f/0x4c0 [ 51.426224][ C0] console_flush_one_record+0x46f/0x710 [ 51.426225][ C0] console_unlock+0xee/0x1f0 [ 51.426226][ C0] vprintk_emit+0x37c/0x3e0 [ 51.426228][ C0] dev_vprintk_emit+0x27f/0x2c0 [ 51.426231][ C0] dev_printk_emit+0xb9/0xee [ 51.426232][ C0] _dev_info+0xe2/0x116 [ 51.426234][ C0] __devm_rtc_register_device.cold+0xc3/0x3a8 [ 51.426236][ C0] cmos_do_probe+0x73b/0x98a [ 51.426238][ C0] platform_probe+0xfe/0x1f0 [ 51.426240][ C0] call_driver_probe+0x61/0x1c0 [ 51.426242][ C0] really_probe+0x199/0x760 [ 51.426243][ C0] __driver_probe_device+0x24f/0x440 [ 51.426245][ C0] driver_probe_device+0x4a/0xf0 [ 51.426246][ C0] __driver_attach+0x1b8/0x540 [ 51.426247][ C0] bus_for_each_dev+0x130/0x1e0 [ 51.426248][ C0] bus_add_driver+0x2c8/0x530 [ 51.426249][ C0] driver_register+0x1a3/0x390 [ 51.426251][ C0] __platform_driver_probe+0x13f/0x270 [ 51.426252][ C0] cmos_init+0x31/0x40 [ 51.426255][ C0] do_one_initcall+0x124/0x4f0 [ 51.426256][ C0] kernel_init_freeable+0x596/0x630 [ 51.426257][ C0] kernel_init+0x21/0x150 [ 51.426259][ C0] ret_from_fork+0x474/0x6b0 [ 51.426261][ C0] ret_from_fork_asm+0x11/0x20 [ 51.426262][ C0] [ 51.426262][ C0] -> (console_owner){..-.}-{0:0} { [ 51.426264][ C0] IN-SOFTIRQ-W at: [ 51.426264][ C0] __lock_acquire+0x388/0xc20 [ 51.426266][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426267][ C0] console_lock_spinning_enable+0x5c/0x60 [ 51.426268][ C0] console_emit_next_record+0x1d1/0x4c0 [ 51.426270][ C0] console_flush_one_record+0x46f/0x710 [ 51.426271][ C0] console_unlock+0xee/0x1f0 [ 51.426273][ C0] vprintk_emit+0x37c/0x3e0 [ 51.426274][ C0] _printk+0xc7/0x100 [ 51.426277][ C0] clocksource_watchdog.part.0.cold+0x105/0x1dd [ 51.426279][ C0] call_timer_fn+0x160/0x4d0 [ 51.426281][ C0] __run_timers+0x68f/0xaa0 [ 51.426282][ C0] run_timer_softirq+0xf0/0x160 [ 51.426283][ C0] handle_softirqs+0x1d3/0x900 [ 51.426285][ C0] __irq_exit_rcu+0x145/0x1c0 [ 51.426287][ C0] irq_exit_rcu+0xe/0x30 [ 51.426288][ C0] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 51.426289][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.426291][ C0] pv_native_safe_halt+0xf/0x10 [ 51.426293][ C0] default_idle+0x9/0x10 [ 51.426294][ C0] default_idle_call+0x6e/0xb0 [ 51.426296][ C0] cpuidle_idle_call.constprop.0+0x237/0x410 [ 51.426298][ C0] do_idle+0xd8/0x190 [ 51.426299][ C0] cpu_startup_entry+0x53/0x70 [ 51.426300][ C0] rest_init+0x279/0x280 [ 51.426302][ C0] start_kernel+0x3af/0x3b0 [ 51.426303][ C0] x86_64_start_reservations+0x24/0x30 [ 51.426305][ C0] x86_64_start_kernel+0x12b/0x130 [ 51.426307][ C0] common_startup_64+0x13e/0x148 [ 51.426309][ C0] INITIAL USE at: [ 51.426310][ C0] } [ 51.426310][ C0] ... key at: [] console_owner_dep_map+0x0/0x60 [ 51.426313][ C0] ... acquired at: [ 51.426313][ C0] mark_lock+0x1d7/0xa00 [ 51.426315][ C0] mark_usage+0x42/0x170 [ 51.426316][ C0] __lock_acquire+0x388/0xc20 [ 51.426317][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426318][ C0] console_lock_spinning_enable+0x5c/0x60 [ 51.426319][ C0] console_emit_next_record+0x1d1/0x4c0 [ 51.426321][ C0] console_flush_one_record+0x46f/0x710 [ 51.426322][ C0] console_unlock+0xee/0x1f0 [ 51.426323][ C0] vprintk_emit+0x37c/0x3e0 [ 51.426325][ C0] _printk+0xc7/0x100 [ 51.426326][ C0] clocksource_watchdog.part.0.cold+0x105/0x1dd [ 51.426327][ C0] call_timer_fn+0x160/0x4d0 [ 51.426329][ C0] __run_timers+0x68f/0xaa0 [ 51.426330][ C0] run_timer_softirq+0xf0/0x160 [ 51.426331][ C0] handle_softirqs+0x1d3/0x900 [ 51.426332][ C0] __irq_exit_rcu+0x145/0x1c0 [ 51.426333][ C0] irq_exit_rcu+0xe/0x30 [ 51.426334][ C0] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 51.426336][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.426337][ C0] pv_native_safe_halt+0xf/0x10 [ 51.426338][ C0] default_idle+0x9/0x10 [ 51.426340][ C0] default_idle_call+0x6e/0xb0 [ 51.426341][ C0] cpuidle_idle_call.constprop.0+0x237/0x410 [ 51.426342][ C0] do_idle+0xd8/0x190 [ 51.426343][ C0] cpu_startup_entry+0x53/0x70 [ 51.426344][ C0] rest_init+0x279/0x280 [ 51.426346][ C0] start_kernel+0x3af/0x3b0 [ 51.426347][ C0] x86_64_start_reservations+0x24/0x30 [ 51.426348][ C0] x86_64_start_kernel+0x12b/0x130 [ 51.426350][ C0] common_startup_64+0x13e/0x148 [ 51.426351][ C0] [ 51.426351][ C0] [ 51.426351][ C0] stack backtrace: [ 51.426354][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 51.426357][ C0] Tainted: [W]=WARN [ 51.426358][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 51.426360][ C0] Call Trace: [ 51.426361][ C0] [ 51.426362][ C0] dump_stack_lvl+0x6f/0xa0 [ 51.426366][ C0] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 51.426369][ C0] mark_lock_irq+0x989/0x9c0 [ 51.426370][ C0] ? add_lock_to_list+0x2c/0x1a0 [ 51.426373][ C0] mark_lock+0x1d7/0xa00 [ 51.426374][ C0] mark_usage+0x42/0x170 [ 51.426376][ C0] __lock_acquire+0x388/0xc20 [ 51.426378][ C0] lock_acquire.part.0+0xd4/0x280 [ 51.426379][ C0] ? console_lock_spinning_enable+0x40/0x60 [ 51.426381][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426384][ C0] ? lock_acquire+0x13c/0x160 [ 51.426386][ C0] console_lock_spinning_enable+0x5c/0x60 [ 51.426387][ C0] ? console_lock_spinning_enable+0x40/0x60 [ 51.426389][ C0] console_emit_next_record+0x1d1/0x4c0 [ 51.426391][ C0] ? devkmsg_read+0x4b0/0x4b0 [ 51.426392][ C0] ? console_flush_one_record+0x106/0x710 [ 51.426394][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426396][ C0] ? lock_acquire+0x13c/0x160 [ 51.426397][ C0] console_flush_one_record+0x46f/0x710 [ 51.426399][ C0] ? console_emit_next_record+0x4c0/0x4c0 [ 51.426401][ C0] ? __lock_acquire+0x518/0xc20 [ 51.426403][ C0] console_unlock+0xee/0x1f0 [ 51.426405][ C0] ? console_flush_one_record+0x710/0x710 [ 51.426406][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426408][ C0] ? lock_acquire+0x60/0x160 [ 51.426410][ C0] ? __down_trylock_console_sem+0x5e/0xa0 [ 51.426411][ C0] ? vprintk_emit+0x320/0x3e0 [ 51.426413][ C0] vprintk_emit+0x37c/0x3e0 [ 51.426415][ C0] ? wake_up_klogd_work_func+0x90/0x90 [ 51.426417][ C0] ? clocksource_watchdog.part.0+0x450/0x540 [ 51.426419][ C0] _printk+0xc7/0x100 [ 51.426421][ C0] ? snapshot_read.cold+0x21/0x21 [ 51.426423][ C0] ? clocksource_watchdog.part.0+0x450/0x540 [ 51.426424][ C0] ? __lock_release.isra.0+0x69/0x1a0 [ 51.426426][ C0] clocksource_watchdog.part.0.cold+0x105/0x1dd [ 51.426428][ C0] ? clocksource_watchdog.part.0+0x540/0x540 [ 51.426429][ C0] ? clocksource_watchdog.part.0+0x540/0x540 [ 51.426431][ C0] call_timer_fn+0x160/0x4d0 [ 51.426433][ C0] ? detach_if_pending+0x1d0/0x1d0 [ 51.426434][ C0] ? debug_object_active_state+0x430/0x430 [ 51.426437][ C0] ? find_held_lock+0x2b/0x80 [ 51.426440][ C0] ? __lock_release.isra.0+0x69/0x1a0 [ 51.426441][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426444][ C0] __run_timers+0x68f/0xaa0 [ 51.426445][ C0] ? clocksource_watchdog.part.0+0x540/0x540 [ 51.426447][ C0] ? __bpf_trace_itimer_expire+0x10/0x10 [ 51.426449][ C0] ? __lock_acquire+0x518/0xc20 [ 51.426451][ C0] ? __rwlock_init+0x150/0x150 [ 51.426453][ C0] run_timer_softirq+0xf0/0x160 [ 51.426455][ C0] ? __run_timers+0xaa0/0xaa0 [ 51.426457][ C0] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 51.426460][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426462][ C0] handle_softirqs+0x1d3/0x900 [ 51.426463][ C0] ? __lock_release.isra.0+0x69/0x1a0 [ 51.426465][ C0] ? _local_bh_enable+0xc0/0xc0 [ 51.426466][ C0] __irq_exit_rcu+0x145/0x1c0 [ 51.426468][ C0] irq_exit_rcu+0xe/0x30 [ 51.426469][ C0] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 51.426471][ C0] [ 51.426471][ C0] [ 51.426472][ C0] ? lockdep_hardirqs_on_prepare.part.0+0x9a/0x160 [ 51.426473][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.426475][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x10 [ 51.426478][ C0] Code: 48 8b 3d 94 a2 10 02 e8 1f 00 00 00 48 2b 05 58 f3 ab 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 d6 25 00 fb f4 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01 [ 51.426480][ C0] RSP: 0018:ffffffffa9607cf8 EFLAGS: 00000296 [ 51.426482][ C0] RAX: 00000000002b32d1 RBX: ffffffffa9640600 RCX: ffffffffa64f3307 [ 51.426484][ C0] RDX: ffffffffa9640600 RSI: ffffffffa9457571 RDI: ffffffffa8e8d8e0 [ 51.426484][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 51.426485][ C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff52c0fa2 [ 51.426486][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770 [ 51.426488][ C0] ? cpuidle_idle_call.constprop.0+0x237/0x410 [ 51.426490][ C0] ? lockdep_hardirqs_on+0x91/0x130 [ 51.426491][ C0] default_idle+0x9/0x10 [ 51.426493][ C0] default_idle_call+0x6e/0xb0 [ 51.426495][ C0] cpuidle_idle_call.constprop.0+0x237/0x410 [ 51.426496][ C0] ? arch_cpu_idle_exit+0x40/0x40 [ 51.426498][ C0] ? mark_tsc_async_resets+0x30/0x30 [ 51.426501][ C0] ? rcu_is_watching+0x16/0xd0 [ 51.426503][ C0] do_idle+0xd8/0x190 [ 51.426504][ C0] cpu_startup_entry+0x53/0x70 [ 51.426506][ C0] rest_init+0x279/0x280 [ 51.426508][ C0] ? __cpuidle_text_end+0x3b/0x3b [ 51.426510][ C0] ? rest_init+0x280/0x280 [ 51.426512][ C0] ? acpi_hw_set_mode+0x4a0/0x4a0 [ 51.426516][ C0] ? cpus_read_unlock+0x4f/0xc0 [ 51.426518][ C0] ? acpi_enable+0x1e4/0x330 [ 51.426520][ C0] start_kernel+0x3af/0x3b0 [ 51.426522][ C0] x86_64_start_reservations+0x24/0x30 [ 51.426523][ C0] x86_64_start_kernel+0x12b/0x130 [ 51.426525][ C0] common_startup_64+0x13e/0x148 [ 51.426528][ C0] [ 51.464487][ C1] INFO: lockdep is turned off. [ 51.464657][ C1] CPU: 1 UID: 0 PID: 1397 Comm: mptcp_connect Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 51.464661][ C1] Tainted: [W]=WARN [ 51.464662][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 51.464663][ C1] Call Trace: [ 51.464665][ C1] [ 51.464666][ C1] dump_stack_lvl+0x6f/0xa0 [ 51.464672][ C1] process_one_work.cold+0x149/0x304 [ 51.464675][ C1] ? tcp_tsq_handler+0x170/0x170 [ 51.464678][ C1] ? tcp_tsq_handler+0x170/0x170 [ 51.464682][ C1] ? __queue_delayed_work+0x470/0x470 [ 51.464685][ C1] ? lock_acquire.part.0+0xd4/0x280 [ 51.464689][ C1] bh_worker+0x5f2/0x900 [ 51.464691][ C1] ? process_one_work+0x1560/0x1560 [ 51.464693][ C1] ? __lock_release.isra.0+0x69/0x1a0 [ 51.464694][ C1] ? net_tx_action+0x540/0xac0 [ 51.464699][ C1] tasklet_action+0x1c/0x90 [ 51.464701][ C1] handle_softirqs+0x1d3/0x900 [ 51.464702][ C1] ? _local_bh_enable+0xc0/0xc0 [ 51.464704][ C1] ? _local_bh_enable+0xc0/0xc0 [ 51.464706][ C1] do_softirq+0xac/0xe0 [ 51.464707][ C1] [ 51.464707][ C1] [ 51.464708][ C1] __local_bh_enable_ip+0x118/0x150 [ 51.464710][ C1] sk_wait_data+0x233/0x510 [ 51.464713][ C1] ? sockopt_release_sock+0x70/0x70 [ 51.464715][ C1] ? do_raw_spin_lock+0x131/0x280 [ 51.464717][ C1] ? add_wait_queue_priority_exclusive+0x1b0/0x1b0 [ 51.464720][ C1] ? mptcp_send_ack+0x200/0x200 [ 51.464723][ C1] ? mark_held_locks+0x40/0x70 [ 51.464725][ C1] mptcp_recvmsg+0x771/0x10f0 [ 51.464727][ C1] ? find_held_lock+0x2b/0x80 [ 51.464729][ C1] ? __rwlock_init+0x150/0x150 [ 51.464731][ C1] ? mptcp_read_sock+0x10/0x10 [ 51.464732][ C1] ? ovl_copyattr+0x45d/0x5a0 [ 51.464736][ C1] ? find_held_lock+0x2b/0x80 [ 51.464738][ C1] ? __lock_release.isra.0+0x69/0x1a0 [ 51.464740][ C1] sock_read_iter+0x269/0x4e0 [ 51.464743][ C1] ? sock_write_iter+0x480/0x480 [ 51.464746][ C1] ? rcu_read_lock_any_held+0x3c/0x90 [ 51.464748][ C1] ? validate_chain+0x38b/0xc20 [ 51.464750][ C1] ? sock_write_iter+0x480/0x480 [ 51.464752][ C1] new_sync_read+0x3fb/0x750 [ 51.464755][ C1] ? __lock_acquire+0x518/0xc20 [ 51.464757][ C1] ? generic_write_checks_count+0x480/0x480 [ 51.464758][ C1] ? find_held_lock+0x2b/0x80 [ 51.464761][ C1] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 51.464764][ C1] vfs_read+0x3dd/0x7b0 [ 51.464766][ C1] ? fdget_pos+0x4f/0x310 [ 51.464769][ C1] ksys_read+0x1ac/0x250 [ 51.464771][ C1] ? vfs_write+0xbd0/0xbd0 [ 51.464772][ C1] ? restore_fpregs_from_fpstate+0x44/0x130 [ 51.464775][ C1] ? rcu_is_watching+0x16/0xd0 [ 51.464777][ C1] do_syscall_64+0xff/0x530 [ 51.464779][ C1] ? exc_page_fault+0xee/0x100 [ 51.464782][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 51.464784][ C1] RIP: 0033:0x7fd4bc8e854e [ 51.464787][ C1] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa [ 51.464789][ C1] RSP: 002b:00007ffdbdcbc4d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 51.464792][ C1] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd4bc8e854e [ 51.464793][ C1] RDX: 0000000000004000 RSI: 00007ffdbdcc05c0 RDI: 0000000000000005 [ 51.464794][ C1] RBP: 00007ffdbdcbc4e0 R08: 0000000000000000 R09: 0000000000000000 [ 51.464795][ C1] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000004000 [ 51.464796][ C1] R13: 00007ffdbdcc4690 R14: 000000001d631010 R15: 00007ffdbdcc4740 [ 51.464798][ C1]