rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (1 GPs behind) idle=a164/1/0x4000000000000000 softirq=40888/40889 fqs=11 (detected by 0, t=10505 jiffies, g=51473, q=36 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9067 Comm: kworker/u4:11 Not tainted 6.0.0-rc4-syzkaller-00126-g26b1224903b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Workqueue: bond3 bond_mii_monitor RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: 48 89 ef 5d e9 71 be 4b 00 5d be 03 00 00 00 e9 46 67 81 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 09 65 86 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc900001e0e38 EFLAGS: 00000097 RAX: 0000000080010001 RBX: ffff8880720b2340 RCX: ffffffff816c258f RDX: ffff888025fe0000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000007 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880b9b2a640 R14: ffff8880b9b2a540 R15: ffffffff878c38f0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 0000000027e46000 CR4: 0000000000350ee0 Call Trace: cpumask_test_cpu include/linux/cpumask.h:390 [inline] cpu_online include/linux/cpumask.h:965 [inline] trace_hrtimer_expire_entry include/trace/events/timer.h:235 [inline] __run_hrtimer kernel/time/hrtimer.c:1682 [inline] __hrtimer_run_queues+0x53e/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202 Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 5e a7 dc f7 48 89 ef e8 e6 28 dd f7 e8 91 b2 ff f7 fb bf 01 00 00 00 a6 ea cf f7 65 8b 05 5f a0 7f 76 85 c0 74 02 5d c3 e8 be a5 7d RSP: 0018:ffffc9001513fd08 EFLAGS: 00000202 RAX: 0000000000469f91 RBX: 0000000000000100 RCX: 1ffffffff1bbd351 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff888011869800 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed100230d300 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888032590ff0 R14: ffff888074631600 R15: ffff888011869800 process_one_work+0x88c/0x1610 kernel/workqueue.c:2262 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 rcu: rcu_preempt kthread starved for 10450 jiffies! g51473 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:28728 pid: 16 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0xadf/0x52b0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657 rcu_gp_kthread+0x236/0x360 kernel/rcu/tree.c:1854 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 13159 Comm: syz-executor.5 Not tainted 6.0.0-rc4-syzkaller-00126-g26b1224903b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline] check_cpu_stall kernel/rcu/tree_stall.h:762 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342 update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x5c3/0x1430 kernel/smp.c:988 Code: 89 ee e8 30 ad 0a 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 4f b0 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 b5 0b 00 00 8b 43 08 31 RSP: 0018:ffffc90004f37940 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b9b3edc0 RCX: 0000000000000000 RDX: ffff88802e4a5880 RSI: ffffffff817159e1 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017367db9 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1302 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1490 text_poke_bp+0xad/0x110 arch/x86/kernel/alternative.c:1706 arch_static_call_transform+0x4d/0x90 arch/x86/kernel/static_call.c:118 __static_call_update+0xcf/0x620 kernel/static_call_inline.c:136 tracepoint_update_call kernel/tracepoint.c:317 [inline] tracepoint_remove_func kernel/tracepoint.c:441 [inline] tracepoint_probe_unregister+0x9d0/0xc30 kernel/tracepoint.c:551 bpf_raw_tp_link_release+0x51/0xa0 kernel/bpf/syscall.c:3130 bpf_link_free+0xe6/0x1b0 kernel/bpf/syscall.c:2713 bpf_link_put+0x161/0x1b0 kernel/bpf/syscall.c:2739 bpf_link_release+0x33/0x40 kernel/bpf/syscall.c:2748 __fput+0x277/0x9d0 fs/file_table.c:320 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5175e3bebb ================================ WARNING: inconsistent lock state 6.0.0-rc4-syzkaller-00126-g26b1224903b3 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.5/13159 [HC1[1]:SC0[0]:HE0:SE1] takes: ffffffff8c0bf378 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff8c0bf378 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836 {HARDIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] alloc_vmap_area+0xa0b/0x1d50 mm/vmalloc.c:1617 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2484 get_vm_area_caller+0x43/0x50 mm/vmalloc.c:2537 __ioremap_caller.constprop.0+0x292/0x600 arch/x86/mm/ioremap.c:280 acpi_os_ioremap include/acpi/acpi_io.h:13 [inline] acpi_map drivers/acpi/osl.c:296 [inline] acpi_os_map_iomem+0x463/0x550 drivers/acpi/osl.c:355 acpi_tb_acquire_table+0xd8/0x209 drivers/acpi/acpica/tbdata.c:142 acpi_tb_validate_table drivers/acpi/acpica/tbdata.c:317 [inline] acpi_tb_validate_table+0x50/0x8c drivers/acpi/acpica/tbdata.c:308 acpi_tb_verify_temp_table+0x84/0x674 drivers/acpi/acpica/tbdata.c:504 acpi_reallocate_root_table+0x374/0x3e0 drivers/acpi/acpica/tbxface.c:180 acpi_early_init+0x13a/0x438 drivers/acpi/bus.c:1214 start_kernel+0x3cf/0x48f init/main.c:1099 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 42896 hardirqs last enabled at (42895): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 hardirqs last disabled at (42896): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (22164): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (22164): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (21973): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (21973): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(vmap_area_lock); lock(vmap_area_lock); *** DEADLOCK *** 4 locks held by syz-executor.5/13159: #0: ffffffff8bff2ac8 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_unregister+0x2d/0xc30 kernel/tracepoint.c:548 #1: ffffffff8be365b0 (cpu_hotplug_lock){++++}-{0:0}, at: __static_call_update+0x87/0x620 kernel/static_call_inline.c:128 #2: ffffffff8c062d48 (static_call_mutex){+.+.}-{3:3}, at: static_call_lock kernel/static_call_inline.c:25 [inline] #2: ffffffff8c062d48 (static_call_mutex){+.+.}-{3:3}, at: __static_call_update+0x95/0x620 kernel/static_call_inline.c:129 #3: ffffffff8be51908 (text_mutex){+.+.}-{3:3}, at: arch_static_call_transform+0x1f/0x90 arch/x86/kernel/static_call.c:114 stack backtrace: CPU: 0 PID: 13159 Comm: syz-executor.5 Not tainted 6.0.0-rc4-syzkaller-00126-g26b1224903b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4524 [inline] __lock_acquire+0x14a2/0x56d0 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836 check_heap_object mm/usercopy.c:176 [inline] __check_object_size mm/usercopy.c:250 [inline] __check_object_size+0x1f8/0x700 mm/usercopy.c:212 check_object_size include/linux/thread_info.h:199 [inline] __copy_from_user_inatomic include/linux/uaccess.h:62 [inline] copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline] copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31 copy_code arch/x86/kernel/dumpstack.c:91 [inline] show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121 show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149 __show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline] check_cpu_stall kernel/rcu/tree_stall.h:762 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342 update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x5c3/0x1430 kernel/smp.c:988 Code: 89 ee e8 30 ad 0a 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 4f b0 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 b5 0b 00 00 8b 43 08 31 RSP: 0018:ffffc90004f37940 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b9b3edc0 RCX: 0000000000000000 RDX: ffff88802e4a5880 RSI: ffffffff817159e1 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017367db9 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1302 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1490 text_poke_bp+0xad/0x110 arch/x86/kernel/alternative.c:1706 arch_static_call_transform+0x4d/0x90 arch/x86/kernel/static_call.c:118 __static_call_update+0xcf/0x620 kernel/static_call_inline.c:136 tracepoint_update_call kernel/tracepoint.c:317 [inline] tracepoint_remove_func kernel/tracepoint.c:441 [inline] tracepoint_probe_unregister+0x9d0/0xc30 kernel/tracepoint.c:551 bpf_raw_tp_link_release+0x51/0xa0 kernel/bpf/syscall.c:3130 bpf_link_free+0xe6/0x1b0 kernel/bpf/syscall.c:2713 bpf_link_put+0x161/0x1b0 kernel/bpf/syscall.c:2739 bpf_link_release+0x33/0x40 kernel/bpf/syscall.c:2748 __fput+0x277/0x9d0 fs/file_table.c:320 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5175e3bebb Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffc75c8b0e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00007f5175e3bebb RDX: 0000001b2eb20000 RSI: 0000001b2eb44820 RDI: 0000000000000007 RBP: 00007f5175f9d980 R08: 0000000000000000 R09: 0000000023638f37 R10: 00007ffc75c9b090 R11: 0000000000000293 R12: 000000000009c86e R13: 00007ffc75c8b1e0 R14: 00007f5175f9c050 R15: 0000000000000032 Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffc75c8b0e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 00007f5175e3bebb RDX: 0000001b2eb20000 RSI: 0000001b2eb44820 RDI: 0000000000000007 RBP: 00007f5175f9d980 R08: 0000000000000000 R09: 0000000023638f37 R10: 00007ffc75c9b090 R11: 0000000000000293 R12: 000000000009c86e R13: 00007ffc75c8b1e0 R14: 00007f5175f9c050 R15: 0000000000000032