Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts.
syzkaller login: [ 692.417550][ C0] hrtimer: interrupt took 92494 ns
[ 793.284479][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 793.291480][ C0] (detected by 0, t=10502 jiffies, g=8669, q=2)
[ 793.297811][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295016466-4295005964), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 793.311168][ C0] syz-executor765 R running task 28552 9407 9389 0x00000000
[ 793.319071][ C0] Call Trace:
[ 793.322351][ C0]
[ 793.325305][ C0] sched_show_task.cold+0x2ee/0x35d
[ 793.330508][ C0] ? can_nice.part.0+0x20/0x20
[ 793.335333][ C0] ? __sanitizer_cov_trace_cmp8+0x18/0x20
[ 793.341138][ C0] rcu_sched_clock_irq.cold+0xaf4/0xc02
[ 793.346731][ C0] update_process_times+0x2d/0x70
[ 793.351807][ C0] tick_sched_handle+0xa2/0x190
[ 793.356776][ C0] tick_sched_timer+0x53/0x140
[ 793.361570][ C0] __hrtimer_run_queues+0x364/0xe40
[ 793.366772][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 793.372059][ C0] ? hrtimer_init+0x330/0x330
[ 793.376739][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 793.382555][ C0] ? ktime_get_update_offsets_now+0x2ce/0x430
[ 793.388630][ C0] hrtimer_interrupt+0x314/0x770
[ 793.393654][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 793.399207][ C0] apic_timer_interrupt+0xf/0x20
[ 793.404158][ C0]
[ 793.407099][ C0] RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80
[ 793.413121][ C0] Code: c0 e8 34 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 52 f5 ca 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 e7 7b 88 f9 65 8b 05 d8 de 39 78 85 c0 74 06 41
[ 793.432738][ C0] RSP: 0000:ffffc90001f47ca0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 793.441331][ C0] RAX: 1ffffffff132669d RBX: 0000000000000000 RCX: 0000000000000000
[ 793.449301][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff888095ca8b54
[ 793.457286][ C0] RBP: ffffc90001f47ca8 R08: ffff888095ca82c0 R09: 0000000000000000
[ 793.465341][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a8ef0b80
[ 793.473319][ C0] R13: ffff8880a8ef0cc0 R14: dffffc0000000000 R15: 000000000000000b
[ 793.481368][ C0] get_signal+0x1bee/0x24f0
[ 793.485920][ C0] do_signal+0x87/0x1700
[ 793.490218][ C0] ? __kasan_check_write+0x14/0x20
[ 793.495378][ C0] ? trace_hardirqs_on+0x67/0x240
[ 793.500418][ C0] ? setup_sigcontext+0x7d0/0x7d0
[ 793.505591][ C0] ? __bad_area_nosemaphore+0xb3/0x420
[ 793.511105][ C0] ? prepare_exit_to_usermode+0x321/0x3a0
[ 793.516833][ C0] ? exit_to_usermode_loop+0x43/0x380
[ 793.522232][ C0] ? lockdep_hardirqs_on+0x421/0x5e0
[ 793.527520][ C0] ? trace_hardirqs_on+0x67/0x240
[ 793.532553][ C0] exit_to_usermode_loop+0x286/0x380
[ 793.537845][ C0] prepare_exit_to_usermode+0x321/0x3a0
[ 793.543479][ C0] ret_from_intr+0x26/0x36
[ 793.547894][ C0] RIP: 0033:0x401505
[ 793.551803][ C0] Code: 00 00 00 be b4 fe 4a 00 e8 48 ee ff ff 48 85 c0 0f 85 d2 fe ff ff e9 4a ff ff ff e8 55 d9 04 00 48 6b 44 24 28 18 8b 7c 24 38 <48> 8b 88 50 00 00 20 48 8b 90 48 00 00 20 48 8b b0 40 00 00 20 e8
[ 793.571839][ C0] RSP: 002b:00007f51c6df1b20 EFLAGS: 00010202
[ 793.577914][ C0] RAX: 0000000002f54358 RBX: 00000000006dcc28 RCX: 0000000000406cc7
[ 793.585892][ C0] RDX: 60b237aef639e3c2 RSI: 0000000000000000 RDI: 0000000000000004
[ 793.593876][ C0] RBP: 00000000006dcc20 R08: 00007f51c6df1b20 R09: 00000000006dcc20
[ 793.601848][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000006dcc2c
[ 793.609823][ C0] R13: 00007ffcd25bbb6f R14: 00007f51c6df29c0 R15: 00000000006dcc20
[ 793.617822][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g8669 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 793.628914][ C0] rcu: RCU grace-period kthread stack dump:
[ 793.634799][ C0] rcu_preempt R running task 29272 10 2 0x80004000
[ 793.642698][ C0] Call Trace:
[ 793.646047][ C0] __schedule+0x934/0x1f90
[ 793.650477][ C0] ? __sched_text_start+0x8/0x8
[ 793.655344][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 793.661175][ C0] ? schedule_timeout+0x47c/0xc50
[ 793.666203][ C0] ? lockdep_hardirqs_on+0x421/0x5e0
[ 793.671508][ C0] schedule+0xdc/0x2b0
[ 793.675586][ C0] schedule_timeout+0x486/0xc50
[ 793.680436][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0
[ 793.686243][ C0] ? usleep_range+0x170/0x170
[ 793.690919][ C0] ? trace_hardirqs_on+0x67/0x240
[ 793.695950][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 793.701711][ C0] ? swake_up_one+0x60/0x60
[ 793.706350][ C0] rcu_gp_kthread+0x9b2/0x18d0
[ 793.711137][ C0] ? rcu_barrier+0x350/0x350
[ 793.715738][ C0] ? trace_hardirqs_on+0x67/0x240
[ 793.720770][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 793.727072][ C0] ? __kthread_parkme+0x108/0x1c0
[ 793.732101][ C0] ? __kasan_check_read+0x11/0x20
[ 793.737134][ C0] kthread+0x361/0x430
[ 793.741239][ C0] ? rcu_barrier+0x350/0x350
[ 793.745830][ C0] ? kthread_mod_delayed_work+0x1f0/0x1f0
[ 793.751586][ C0] ret_from_fork+0x24/0x30