Warning: Permanently added '10.128.15.206' (ECDSA) to the list of known hosts. [ 47.106630] hrtimer: interrupt took 34006 ns [ 153.579334] INFO: rcu_preempt detected stalls on CPUs/tasks: [ 153.585240] (detected by 0, t=10502 jiffies, g=1205, c=1204, q=143) [ 153.589323] INFO: rcu_sched detected stalls on CPUs/tasks: [ 153.591722] All QSes seen, last rcu_preempt kthread activity 10502 (4294952657-4294942155), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 153.597335] syz-executor249 R [ 153.609536] [ 153.609540] running task [ 153.612619] (detected by 1, t=10502 jiffies, g=411, c=410, q=2) [ 153.614404] 26864 8792 8324 0x00000000 [ 153.617636] All QSes seen, last rcu_sched kthread activity 10502 (4294952657-4294942155), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 153.617639] syz-executor249 R [ 153.623758] Call Trace: [ 153.627880] running task 27192 8797 8326 0x00000000 [ 153.639910] [ 153.642991] Call Trace: [ 153.645565] sched_show_task.cold.22+0x343/0x3a7 [ 153.651438] [ 153.653572] rcu_check_callbacks.cold.59+0xcbc/0xd13 [ 153.656244] sched_show_task.cold.22+0x343/0x3a7 [ 153.660986] update_process_times+0x2a/0x60 [ 153.663115] rcu_check_callbacks.cold.59+0xcbc/0xd13 [ 153.668197] tick_sched_handle.isra.5+0x6f/0x140 [ 153.672936] update_process_times+0x2a/0x60 [ 153.677234] tick_sched_timer+0x39/0xf0 [ 153.682496] tick_sched_handle.isra.5+0x6f/0x140 [ 153.687317] ? tick_sched_handle.isra.5+0x140/0x140 [ 153.691628] tick_sched_timer+0x39/0xf0 [ 153.695664] __hrtimer_run_queues+0x279/0xad0 [ 153.700393] ? tick_sched_handle.isra.5+0x140/0x140 [ 153.705402] ? enqueue_hrtimer+0x330/0x330 [ 153.709363] __hrtimer_run_queues+0x279/0xad0 [ 153.713832] ? ktime_get_update_offsets_now+0x141/0x370 [ 153.718829] ? enqueue_hrtimer+0x330/0x330 [ 153.723037] hrtimer_interrupt+0x1ae/0x600 [ 153.727591] ? ktime_get_update_offsets_now+0x141/0x370 [ 153.733102] ? sched_clock_cpu+0x1b/0x1c0 [ 153.737313] hrtimer_interrupt+0x1ae/0x600 [ 153.741535] smp_apic_timer_interrupt+0x11f/0x5d0 [ 153.746865] ? sched_clock_cpu+0x1b/0x1c0 [ 153.750995] apic_timer_interrupt+0x9a/0xa0 [ 153.755223] smp_apic_timer_interrupt+0x11f/0x5d0 [ 153.760268] [ 153.764410] apic_timer_interrupt+0x9a/0xa0 [ 153.768877] RIP: 0010:_raw_spin_unlock_irq+0x56/0x90 [ 153.773688] [ 153.775909] RSP: 0018:ffff8880aac177a0 EFLAGS: 00000282 [ 153.780385] RIP: 0010:save_stack_address+0x2c/0x60 [ 153.785456] ORIG_RAX: ffffffffffffff10 [ 153.787666] RSP: 0000:ffff8880907ef520 EFLAGS: 00000283 [ 153.793003] RAX: dffffc0000000000 RBX: ffff8880ba634380 RCX: 0000000000000000 [ 153.798012] ORIG_RAX: ffffffffffffff10 [ 153.801978] RDX: 1ffffffff11e1153 RSI: 0000000000000001 RDI: ffffffff88f08a98 [ 153.807420] RAX: 0000000000000001 RBX: ffff8880907ef5e0 RCX: 0000000000000002 [ 153.814684] RBP: ffff8880aac177a8 R08: 0000000000000001 R09: 0000000000000000 [ 153.818634] RDX: ffff8880907ef5f8 RSI: ffffffff817e13f2 RDI: ffff8880907ef5e0 [ 153.825876] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ac37c000 [ 153.825880] R13: dffffc0000000000 R14: ffff8880ac37c628 R15: ffff8880ac37c000 [ 153.833217] RBP: ffff8880907ef530 R08: 1ffff110120fdeb2 R09: ffff8880907ef578 [ 153.833221] R10: ffff8880907ef4f0 R11: ffff8880907ef59f R12: ffffffff817e13f2 [ 153.840574] __schedule+0x1621/0x1ee0 [ 153.847803] R13: 0000000000000000 R14: ffff8880aab00100 R15: ffff88809b49fc5f [ 153.847811] ? kasan_kmalloc.part.1+0x62/0xf0 [ 153.855236] ? __sched_text_start+0x8/0x8 [ 153.862783] ? kasan_kmalloc.part.1+0x62/0xf0 [ 153.870135] ? kfree+0x1f1/0x270 [ 153.877395] __save_stack_trace+0x61/0xd0 [ 153.881168] schedule+0x7f/0x1b0 [ 153.888530] ? kasan_kmalloc.part.1+0x62/0xf0 [ 153.893013] tty_open+0x354/0x8e0 [ 153.897221] save_stack_trace+0x16/0x20 [ 153.901692] ? tty_init_dev+0x350/0x350 [ 153.905029] kasan_kmalloc.part.1+0x62/0xf0 [ 153.909151] ? do_raw_spin_unlock+0x16a/0x250 [ 153.912490] ? save_stack_trace+0x16/0x20 [ 153.916986] chrdev_open+0x1e9/0x5b0 [ 153.920438] ? kasan_kmalloc.part.1+0x62/0xf0 [ 153.924407] ? cdev_put.part.0+0x50/0x50 [ 153.928363] ? mark_held_locks+0xc7/0x130 [ 153.932655] ? cdev_put.part.0+0x50/0x50 [ 153.937151] ? retint_kernel+0x2d/0x2d [ 153.941311] do_dentry_open+0x3e4/0xde0 [ 153.945000] ? trace_hardirqs_on_caller+0x3bb/0x570 [ 153.949473] ? cdev_put.part.0+0x50/0x50 [ 153.953527] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.957658] vfs_open+0xfc/0x240 [ 153.961693] ? retint_kernel+0x2d/0x2d [ 153.965568] ? may_open.isra.21+0xac/0x270 [ 153.965576] ? complete_walk+0x71/0x1b0 [ 153.969564] ? lock_downgrade+0x7f0/0x7f0 [ 153.974553] path_openat+0xb6f/0x2760 [ 153.978587] ? kasan_unpoison_shadow+0x35/0x50 [ 153.983534] ? path_mountpoint+0x890/0x890 [ 153.986870] kasan_kmalloc+0xaf/0xc0 [ 153.990734] ? retint_kernel+0x2d/0x2d [ 153.995502] kasan_slab_alloc+0x12/0x20 [ 153.999549] do_filp_open+0x16b/0x220 [ 154.003677] kmem_cache_alloc_trace+0x13b/0x3f0 [ 154.007459] ? __alloc_fd+0x189/0x420 [ 154.012020] tty_open+0x135/0x8e0 [ 154.016225] ? may_open_dev+0xc0/0xc0 [ 154.019937] ? tty_init_dev+0x350/0x350 [ 154.023902] ? _raw_spin_unlock+0x2c/0x50 [ 154.027872] ? do_raw_spin_unlock+0x16a/0x250 [ 154.031766] ? __alloc_fd+0x189/0x420 [ 154.036472] chrdev_open+0x1e9/0x5b0 [ 154.040478] do_sys_open+0x1d0/0x350 [ 154.044127] ? cdev_put.part.0+0x50/0x50 [ 154.048118] ? filp_open+0x50/0x50 [ 154.052264] ? security_file_open+0x128/0x170 [ 154.056399] ? do_syscall_64+0x4c/0x5b0 [ 154.060953] do_dentry_open+0x3e4/0xde0 [ 154.064913] ? SyS_open+0x20/0x20 [ 154.068618] ? cdev_put.part.0+0x50/0x50 [ 154.072302] SyS_openat+0xf/0x20 [ 154.076428] vfs_open+0xfc/0x240 [ 154.080027] do_syscall_64+0x1c7/0x5b0 [ 154.084627] ? may_open.isra.21+0xac/0x270 [ 154.088691] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 154.092668] ? complete_walk+0x71/0x1b0 [ 154.096099] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 154.100244] path_openat+0xb6f/0x2760 [ 154.104023] RIP: 0033:0x7f8d5a568ae9 [ 154.107376] ? path_mountpoint+0x890/0x890 [ 154.111261] RSP: 002b:00007f8d5a51a318 EFLAGS: 00000246 [ 154.115480] ? mark_held_locks+0xc7/0x130 [ 154.120289] ORIG_RAX: 0000000000000101 [ 154.124257] ? trace_hardirqs_on+0x10/0x10 [ 154.129418] RAX: ffffffffffffffda RBX: 00007f8d5a5f03e8 RCX: 00007f8d5a568ae9 [ 154.133278] ? retint_kernel+0x2d/0x2d [ 154.136973] RDX: 0000000000000802 RSI: 0000000020000840 RDI: ffffffffffffff9c [ 154.141202] do_filp_open+0x16b/0x220 [ 154.146717] RBP: 00007f8d5a5f03e0 R08: 0000000000000000 R09: 0000000000000000 [ 154.150862] ? __alloc_fd+0x189/0x420 [ 154.155587] R10: 0000000000000000 R11: 0000000000000246 R12: 7974742f7665642f [ 154.155591] R13: 00007ffe74310b8f R14: 00007f8d5a51a400 R15: 0000000000022000 [ 154.159903] ? may_open_dev+0xc0/0xc0 [ 154.167155] rcu_preempt kthread starved for 10502 jiffies! g1205 c1204 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 [ 154.171011] ? _raw_spin_unlock+0x2c/0x50 [ 154.178248] rcu_preempt R [ 154.182037] ? __alloc_fd+0x189/0x420 [ 154.189409] running task [ 154.193307] ? kmem_cache_alloc+0x36a/0x3e0 [ 154.200659] 29720 8 2 0x80000000 [ 154.207999] do_sys_open+0x1d0/0x350 [ 154.212202] Call Trace: [ 154.222769] ? filp_open+0x50/0x50 [ 154.226918] __schedule+0x824/0x1ee0 [ 154.229994] ? do_syscall_64+0x4c/0x5b0 [ 154.233798] ? __sched_text_start+0x8/0x8 [ 154.236998] ? SyS_open+0x20/0x20 [ 154.241301] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 154.245534] SyS_openat+0xf/0x20 [ 154.249315] schedule+0x7f/0x1b0 [ 154.251962] do_syscall_64+0x1c7/0x5b0 [ 154.255593] schedule_timeout+0x41f/0xcc0 [ 154.259396] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 154.263381] ? usleep_range+0x120/0x120 [ 154.267508] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 154.271125] ? prepare_to_swait+0xe5/0x130 [ 154.276739] RIP: 0033:0x7f8d5a568ae9 [ 154.280091] ? run_timer_softirq+0x540/0x540 [ 154.283626] RSP: 002b:00007f8d5a51a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 154.287693] rcu_gp_kthread+0xb69/0x1df0 [ 154.292177] RAX: ffffffffffffffda RBX: 00007f8d5a5f03e8 RCX: 00007f8d5a568ae9 [ 154.297021] ? force_qs_rnp+0x4d0/0x4d0 [ 154.300968] RDX: 0000000000000802 RSI: 0000000020000840 RDI: ffffffffffffff9c [ 154.306322] kthread+0x338/0x400 [ 154.310709] RBP: 00007f8d5a5f03e0 R08: 0000000000000000 R09: 0000000000000000 [ 154.314498] ? force_qs_rnp+0x4d0/0x4d0 [ 154.319136] R10: 0000000000000000 R11: 0000000000000246 R12: 7974742f7665642f [ 154.328585] ? __kthread_cancel_work+0x170/0x170 [ 154.332802] R13: 00007ffe74310b8f R14: 00007f8d5a51a400 R15: 0000000000022000 [ 154.340752] ret_from_fork+0x24/0x30 [ 154.345303] rcu_sched kthread starved for 10502 jiffies! g411 c410 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 [ 154.401977] rcu_sched R running task 29752 9 2 0x80000000 [ 154.409183] Call Trace: [ 154.411770] __schedule+0x824/0x1ee0 [ 154.415490] ? __sched_text_start+0x8/0x8 [ 154.419637] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 154.424820] schedule+0x7f/0x1b0 [ 154.428183] schedule_timeout+0x41f/0xcc0 [ 154.432327] ? usleep_range+0x120/0x120 [ 154.436335] ? prepare_to_swait+0xe5/0x130 [ 154.440559] ? run_timer_softirq+0x540/0x540 [ 154.444980] rcu_gp_kthread+0xb69/0x1df0 [ 154.449046] ? force_qs_rnp+0x4d0/0x4d0 [ 154.453045] kthread+0x338/0x400 [ 154.456394] ? force_qs_rnp+0x4d0/0x4d0 [ 154.460352] ? __kthread_cancel_work+0x170/0x170 [ 154.465108] ret_from_fork+0x24/0x30 [ 154.469353] sched: RT throttling activated