Title | Replies (including bot) | Last reply |
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[syzbot] INFO: rcu detected stall in dummy_timer (4) | 0 (1) | 2022/07/09 03:52 |
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[syzbot] INFO: rcu detected stall in dummy_timer (4) | 0 (1) | 2022/07/09 03:52 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-5.15 | INFO: rcu detected stall in dummy_timer origin:upstream | C | 5 | 35d | 592d | 0/3 | upstream: reported C repro on 2023/04/23 17:50 | ||
upstream | INFO: rcu detected stall in dummy_timer (2) usb | 1 | 1851d | 1851d | 0/28 | auto-closed as invalid on 2020/02/09 05:37 | |||
upstream | INFO: rcu detected stall in dummy_timer (3) usb | C | error | 132 | 1017d | 1605d | 20/28 | fixed on 2022/03/08 16:11 | |
upstream | INFO: rcu detected stall in dummy_timer usb | C | 16 | 1880d | 1945d | 13/28 | fixed on 2019/10/27 22:28 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2024/11/06 05:05 | 2h54m | bisect fix | upstream | OK (0) job log log | |
2024/09/27 14:03 | 5h24m | bisect fix | upstream | OK (0) job log log | |
2024/08/26 16:37 | 3h44m | bisect fix | upstream | OK (0) job log log | |
2024/07/27 09:21 | 5h18m | bisect fix | upstream | OK (0) job log log | |
2024/06/14 00:40 | 3h08m | bisect fix | upstream | OK (0) job log log | |
2024/03/11 09:00 | 2h33m | bisect fix | upstream | OK (0) job log log | |
2023/12/05 14:33 | 3h16m | bisect fix | upstream | OK (0) job log log | |
2023/11/04 16:56 | 2h47m | bisect fix | upstream | OK (0) job log log | |
2023/10/05 00:41 | 2h52m | bisect fix | upstream | OK (0) job log log | |
2023/08/02 05:53 | 2h25m | bisect fix | upstream | OK (0) job log log | |
2023/06/28 02:35 | 37m | bisect fix | upstream | OK (0) job log log | |
2023/05/26 11:44 | 37m | bisect fix | upstream | OK (0) job log log | |
2023/04/26 10:31 | 1h10m | bisect fix | upstream | OK (0) job log log | |
2023/03/27 07:35 | 41m | bisect fix | upstream | OK (0) job log log | |
2023/02/24 17:08 | 37m | bisect fix | upstream | OK (0) job log log | |
2023/01/25 16:27 | 40m | bisect fix | upstream | OK (0) job log log | |
2022/11/04 12:13 | 37m | bisect fix | upstream | OK (0) job log log |
imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (6833 ticks this GP) idle=b884/1/0x4000000000000000 softirq=5879/5879 fqs=0 (t=10500 jiffies g=4589 q=224 ncpus=2) rcu: rcu_preempt kthread starved for 10500 jiffies! g4589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 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:28856 pid: 16 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5178 [inline] __schedule+0xa00/0x4c10 kernel/sched/core.c:6490 schedule+0xda/0x1b0 kernel/sched/core.c:6566 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657 rcu_gp_kthread+0x234/0x360 kernel/rcu/tree.c:1854 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 1 CPU: 1 PID: 3606 Comm: strace-static-x Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_cpu_stall kernel/rcu/tree_stall.h:658 [inline] check_cpu_stall kernel/rcu/tree_stall.h:744 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq.cold+0x3ff/0x77e 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+0x1c0/0xe50 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+0x40/0xc0 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_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 7a ed e2 f7 48 89 ef e8 12 6f e3 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> f3 70 d6 f7 65 8b 05 5c 98 87 76 85 c0 74 0a 5b 5d c3 e8 d0 83 RSP: 0018:ffffc900003f8b08 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff20db4f6 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001 RBP: ffff8880210a8000 R08: 0000000000000001 R09: ffffffff9068ca0f R10: 0000000000000001 R11: 0000000000000001 R12: ffff888021b39440 R13: ffff8880170a0100 R14: dffffc0000000000 R15: ffff88807a36b300 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] dummy_timer+0x12f6/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:2002 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x2bf/0xc70 kernel/sched/core.c:5058 Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 60 f8 ff ff e8 7b 98 2e 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 98 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000310fb38 EFLAGS: 00000206 RAX: 000000000007abc3 RBX: ffff88802499e180 RCX: 1ffffffff1b76681 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000310fb80 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1017367400 R11: 0000000000000001 R12: ffff8880b9b3a000 R13: ffff888022e641c0 R14: 0000000000000000 R15: ffff8880b9b3aa38 context_switch kernel/sched/core.c:5181 [inline] __schedule+0xa08/0x4c10 kernel/sched/core.c:6490 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6659 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:399 [inline] ptrace_resume kernel/ptrace.c:885 [inline] ptrace_request+0x2db/0x10c0 kernel/ptrace.c:1218 arch_ptrace+0x36/0x510 arch/x86/kernel/ptrace.c:828 __do_sys_ptrace kernel/ptrace.c:1296 [inline] __se_sys_ptrace kernel/ptrace.c:1269 [inline] __x64_sys_ptrace+0x178/0x2a0 kernel/ptrace.c:1269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4e6c1a ================================ WARNING: inconsistent lock state 5.19.0-syzkaller-02972-g200e340f2196 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. strace-static-x/3606 [HC1[1]:SC1[1]:HE0:SE0] takes: ffffffff8beb59b8 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff8beb59b8 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805 {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+0xa49/0x1f00 mm/vmalloc.c:1586 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453 __vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125 __vmalloc_node mm/vmalloc.c:3230 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3244 pcpu_mem_zalloc mm/percpu.c:516 [inline] pcpu_mem_zalloc+0x51/0xa0 mm/percpu.c:508 pcpu_alloc_chunk mm/percpu.c:1454 [inline] pcpu_create_chunk+0xd7/0x930 mm/percpu-vm.c:338 pcpu_alloc+0x1012/0x13d0 mm/percpu.c:1834 alloc_kmem_cache_cpus.constprop.0+0x29/0xc0 mm/slab.c:1729 do_tune_cpucache+0x37/0x230 mm/slab.c:3844 enable_cpucache+0x3c/0xa0 mm/slab.c:3938 kmem_cache_init_late+0x33/0x66 mm/slab.c:1276 start_kernel+0x2f5/0x48f init/main.c:1059 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 544503 hardirqs last enabled at (544502): [<ffffffff897ad6f0>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (544502): [<ffffffff897ad6f0>] _raw_spin_unlock_irqrestore+0x50/0x70 kernel/locking/spinlock.c:194 hardirqs last disabled at (544503): [<ffffffff8977a5bb>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (501032): [<ffffffff8147b4e3>] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (501032): [<ffffffff8147b4e3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (502725): [<ffffffff8147b4e3>] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (502725): [<ffffffff8147b4e3>] __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); <Interrupt> lock(vmap_area_lock); *** DEADLOCK *** 1 lock held by strace-static-x/3606: #0: ffffc900003f8d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:31 [inline] #0: ffffc900003f8d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1464 stack backtrace: CPU: 1 PID: 3606 Comm: strace-static-x Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: <IRQ> __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+0x14ad/0x5660 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:1805 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+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_cpu_stall kernel/rcu/tree_stall.h:658 [inline] check_cpu_stall kernel/rcu/tree_stall.h:744 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq.cold+0x3ff/0x77e 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+0x1c0/0xe50 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+0x40/0xc0 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_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 7a ed e2 f7 48 89 ef e8 12 6f e3 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> f3 70 d6 f7 65 8b 05 5c 98 87 76 85 c0 74 0a 5b 5d c3 e8 d0 83 RSP: 0018:ffffc900003f8b08 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff20db4f6 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001 RBP: ffff8880210a8000 R08: 0000000000000001 R09: ffffffff9068ca0f R10: 0000000000000001 R11: 0000000000000001 R12: ffff888021b39440 R13: ffff8880170a0100 R14: dffffc0000000000 R15: ffff88807a36b300 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] dummy_timer+0x12f6/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:2002 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x2bf/0xc70 kernel/sched/core.c:5058 Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 60 f8 ff ff e8 7b 98 2e 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 98 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000310fb38 EFLAGS: 00000206 RAX: 000000000007abc3 RBX: ffff88802499e180 RCX: 1ffffffff1b76681 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000310fb80 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1017367400 R11: 0000000000000001 R12: ffff8880b9b3a000 R13: ffff888022e641c0 R14: 0000000000000000 R15: ffff8880b9b3aa38 context_switch kernel/sched/core.c:5181 [inline] __schedule+0xa08/0x4c10 kernel/sched/core.c:6490 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6659 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:399 [inline] ptrace_resume kernel/ptrace.c:885 [inline] ptrace_request+0x2db/0x10c0 kernel/ptrace.c:1218 arch_ptrace+0x36/0x510 arch/x86/kernel/ptrace.c:828 __do_sys_ptrace kernel/ptrace.c:1296 [inline] __se_sys_ptrace kernel/ptrace.c:1269 [inline] __x64_sys_ptrace+0x178/0x2a0 kernel/ptrace.c:1269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4e6c1a Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 4c RSP: 002b:00007ffeeade96b0 EFLAGS: 00000206 ORIG_RAX: 0000000000000065 RAX: ffffffffffffffda RBX: 00000000021df2f8 RCX: 00000000004e6c1a RDX: 0000000000000000 RSI: 0000000000000e1b RDI: 0000000000000018 RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000016 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000021e0cf0 R13: 0000000000000000 R14: 000000000000857f R15: 0000000000617180 </TASK> Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 4c RSP: 002b:00007ffeeade96b0 EFLAGS: 00000206 ORIG_RAX: 0000000000000065 RAX: ffffffffffffffda RBX: 00000000021df2f8 RCX: 00000000004e6c1a RDX: 0000000000000000 RSI: 0000000000000e1b RDI: 0000000000000018 RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000016 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000021e0cf0 R13: 0000000000000000 R14: 000000000000857f R15: 0000000000617180 </TASK> NMI backtrace for cpu 1 CPU: 1 PID: 3606 Comm: strace-static-x Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x262/0x3f0 kernel/rcu/tree_stall.h:371 print_cpu_stall kernel/rcu/tree_stall.h:660 [inline] check_cpu_stall kernel/rcu/tree_stall.h:744 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq.cold+0x404/0x77e 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+0x1c0/0xe50 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+0x40/0xc0 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_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 7a ed e2 f7 48 89 ef e8 12 6f e3 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> f3 70 d6 f7 65 8b 05 5c 98 87 76 85 c0 74 0a 5b 5d c3 e8 d0 83 RSP: 0018:ffffc900003f8b08 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff20db4f6 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001 RBP: ffff8880210a8000 R08: 0000000000000001 R09: ffffffff9068ca0f R10: 0000000000000001 R11: 0000000000000001 R12: ffff888021b39440 R13: ffff8880170a0100 R14: dffffc0000000000 R15: ffff88807a36b300 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] dummy_timer+0x12f6/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:2002 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x2bf/0xc70 kernel/sched/core.c:5058 Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 60 f8 ff ff e8 7b 98 2e 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 98 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000310fb38 EFLAGS: 00000206 RAX: 000000000007abc3 RBX: ffff88802499e180 RCX: 1ffffffff1b76681 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000310fb80 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1017367400 R11: 0000000000000001 R12: ffff8880b9b3a000 R13: ffff888022e641c0 R14: 0000000000000000 R15: ffff8880b9b3aa38 context_switch kernel/sched/core.c:5181 [inline] __schedule+0xa08/0x4c10 kernel/sched/core.c:6490 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6659 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:399 [inline] ptrace_resume kernel/ptrace.c:885 [inline] ptrace_request+0x2db/0x10c0 kernel/ptrace.c:1218 arch_ptrace+0x36/0x510 arch/x86/kernel/ptrace.c:828 __do_sys_ptrace kernel/ptrace.c:1296 [inline] __se_sys_ptrace kernel/ptrace.c:1269 [inline] __x64_sys_ptrace+0x178/0x2a0 kernel/ptrace.c:1269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4e6c1a Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 4c RSP: 002b:00007ffeeade96b0 EFLAGS: 00000206 ORIG_RAX: 0000000000000065 RAX: ffffffffffffffda RBX: 00000000021df2f8 RCX: 00000000004e6c1a RDX: 0000000000000000 RSI: 0000000000000e1b RDI: 0000000000000018 RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000016 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000021e0cf0 R13: 0000000000000000 R14: 000000000000857f R15: 0000000000617180 </TASK> imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 6-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 3-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 3-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 3-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 3-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/08/04 10:44 | upstream | 200e340f2196 | 1c9013ac | .config | strace log | report | syz | C | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in dummy_timer | ||
2023/08/13 02:11 | linux-next | 21ef7b1e17d0 | 39990d51 | .config | strace log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: rcu detected stall in dummy_timer | |
2022/07/30 00:21 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 8288c99fc263 | fef302b1 | .config | console log | report | syz | C | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/07/29 21:58 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 8288c99fc263 | fef302b1 | .config | console log | report | syz | C | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/07/22 15:36 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 32f02a211b0a | 22343af4 | .config | console log | report | syz | C | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/07/05 03:47 | upstream | c1084b6c5620 | bff65f44 | .config | console log | report | syz | C | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in dummy_timer | ||
2022/09/21 22:14 | upstream | 06f7db949993 | 380f82fb | .config | console log | report | info | ci-upstream-kasan-gce | INFO: rcu detected stall in dummy_timer | |||
2022/09/10 04:53 | upstream | ce888220d5c7 | 356d8217 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in dummy_timer | ||
2022/08/26 21:24 | upstream | 3e5c673f0d75 | e5a303f1 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in dummy_timer | |||
2022/08/17 23:43 | upstream | 274a2eebf80c | 4e72d229 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in dummy_timer | |||
2022/07/18 12:41 | upstream | ff6992735ade | ff988920 | .config | console log | report | info | ci-upstream-kasan-gce-386 | INFO: rcu detected stall in dummy_timer | |||
2024/10/06 11:11 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 4a9fe2a8ac53 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/09/17 11:10 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 7eb2bf871454 | dd9a85ff | .config | console log | report | info | [disk image] [vmlinux] | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/09/13 17:41 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 7eb2bf871454 | a08652b0 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2022/09/09 08:09 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 7eb2bf871454 | f3027468 | .config | console log | report | info | [disk image] [vmlinux] | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | ||
2022/08/19 11:45 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | ffcf9c5700e4 | 26a13b38 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2022/08/19 03:19 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | ffcf9c5700e4 | 26a13b38 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2022/08/11 12:41 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | ffcf9c5700e4 | 787ed7e0 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2022/07/14 15:18 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | ddc509e940ba | 5d921b08 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2022/07/13 16:16 | https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing | 8affe37c525d | 5d921b08 | .config | console log | report | info | ci2-upstream-usb | INFO: rcu detected stall in dummy_timer | |||
2024/01/04 00:00 | upstream | ac865f00af29 | 28c42cff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | BUG: soft lockup in dummy_timer |