------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: 0000000037c33b38 object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:517 debug_print_object lib/debugobjects.c:514 [inline] WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:517 debug_object_activate+0x360/0x4ac lib/debugobjects.c:732 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:514 [inline] pc : debug_object_activate+0x360/0x4ac lib/debugobjects.c:732 lr : debug_print_object lib/debugobjects.c:514 [inline] lr : debug_object_activate+0x360/0x4ac lib/debugobjects.c:732 sp : ffff800080007ad0 x29: ffff800080007ad0 x28: ffff800093738000 x27: dfff800000000000 x26: ffff80008aef0200 x25: 0000000000000001 x24: ffff0000d03ab100 x23: 0000000000000003 x22: ffff80008b41a2e0 x21: 0000000000000000 x20: ffff80008aef0200 x19: ffff0000d03ab100 x18: ffff800080006fa0 x17: 3362333363373330 x16: ffff80008ad6b09c x15: 0000000000000001 x14: 1fffe00036800002 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000010004 x10: 0000000000ff0100 x9 : feb4eff2500bd900 x8 : feb4eff2500bd900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000800073b8 x4 : ffff80008ed822c0 x3 : ffff8000805ba130 x2 : 0000000000000001 x1 : 0000000100010002 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:514 [inline] debug_object_activate+0x360/0x4ac lib/debugobjects.c:732 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common kernel/rcu/tree.c:2700 [inline] call_rcu+0x48/0xaf4 kernel/rcu/tree.c:2829 switch_schedules net/sched/sch_taprio.c:210 [inline] advance_sched+0x7e0/0xac0 net/sched/sch_taprio.c:984 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x484/0xca0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x2c0/0xb64 kernel/time/hrtimer.c:1815 timer_handler drivers/clocksource/arm_arch_timer.c:674 [inline] arch_timer_handler_virt+0x74/0x88 drivers/clocksource/arm_arch_timer.c:685 handle_percpu_devid_irq+0x2a4/0x804 kernel/irq/chip.c:942 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq_desc kernel/irq/irqdesc.c:672 [inline] generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:728 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:782 [inline] __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:833 [inline] gic_handle_irq+0x6c/0x190 drivers/irqchip/irq-gic-v3.c:877 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:310 __el1_irq arch/arm64/kernel/entry-common.c:536 [inline] el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:551 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:49 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x1f0/0x4e8 kernel/sched/idle.c:312 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:410 rest_init+0x2dc/0x2f4 init/main.c:730 start_kernel+0x0/0x4ec init/main.c:827 start_kernel+0x3ec/0x4ec init/main.c:1072 __primary_switched+0x84/0x8c arch/arm64/kernel/head.S:243 irq event stamp: 284986 hardirqs last enabled at (284985): [] default_idle_call+0xf4/0x128 kernel/sched/idle.c:103 hardirqs last disabled at (284986): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (284986): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (284950): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (284950): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (284937): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: active_state active (active state 1) object: 0000000037c33b38 object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:517 debug_print_object lib/debugobjects.c:514 [inline] WARNING: CPU: 0 PID: 0 at lib/debugobjects.c:517 debug_object_active_state+0x2a8/0x37c lib/debugobjects.c:954 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:514 [inline] pc : debug_object_active_state+0x2a8/0x37c lib/debugobjects.c:954 lr : debug_print_object lib/debugobjects.c:514 [inline] lr : debug_object_active_state+0x2a8/0x37c lib/debugobjects.c:954 sp : ffff800080007ad0 x29: ffff800080007ad0 x28: 00000000000000c0 x27: dfff800000000000 x26: 1fffe0001b159913 x25: 0000000000000003 x24: ffff800093738000 x23: 0000000000000001 x22: ffff80008aef0200 x21: ffff0000d03ab100 x20: ffff80008b41a2e0 x19: 0000000000000000 x18: ffff800080006fa0 x17: 6337333030303030 x16: ffff80008ad6b09c x15: 0000000000000001 x14: 1fffe00036800002 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000010004 x10: 0000000000ff0100 x9 : feb4eff2500bd900 x8 : feb4eff2500bd900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000800073b8 x4 : ffff80008ed822c0 x3 : ffff8000805ba130 x2 : 0000000000000001 x1 : 0000000100010002 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:514 [inline] debug_object_active_state+0x2a8/0x37c lib/debugobjects.c:954 debug_rcu_head_queue kernel/rcu/rcu.h:228 [inline] __call_rcu_common kernel/rcu/tree.c:2700 [inline] call_rcu+0x60/0xaf4 kernel/rcu/tree.c:2829 switch_schedules net/sched/sch_taprio.c:210 [inline] advance_sched+0x7e0/0xac0 net/sched/sch_taprio.c:984 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x484/0xca0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x2c0/0xb64 kernel/time/hrtimer.c:1815 timer_handler drivers/clocksource/arm_arch_timer.c:674 [inline] arch_timer_handler_virt+0x74/0x88 drivers/clocksource/arm_arch_timer.c:685 handle_percpu_devid_irq+0x2a4/0x804 kernel/irq/chip.c:942 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq_desc kernel/irq/irqdesc.c:672 [inline] generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:728 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:782 [inline] __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:833 [inline] gic_handle_irq+0x6c/0x190 drivers/irqchip/irq-gic-v3.c:877 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:310 __el1_irq arch/arm64/kernel/entry-common.c:536 [inline] el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:551 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:49 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x1f0/0x4e8 kernel/sched/idle.c:312 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:410 rest_init+0x2dc/0x2f4 init/main.c:730 start_kernel+0x0/0x4ec init/main.c:827 start_kernel+0x3ec/0x4ec init/main.c:1072 __primary_switched+0x84/0x8c arch/arm64/kernel/head.S:243 irq event stamp: 284986 hardirqs last enabled at (284985): [] default_idle_call+0xf4/0x128 kernel/sched/idle.c:103 hardirqs last disabled at (284986): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (284986): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (284950): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (284950): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (284937): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- rcu: __call_rcu_common(): Double-freed CB 0000000037c33b38->taprio_free_sched_cb+0x0/0x178()!!! slab kmalloc-512 start ffff0000d03ab000 pointer offset 256 size 512