rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10403 ticks this GP) idle=56a4/1/0x4000000000000000 softirq=14438/14565 fqs=5216
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1072430        281            0
rcu: 	cputime:    26895      25592           43   ==> 52490(ms)
rcu: 	(t=10502 jiffies g=9261 q=7624 ncpus=2)
CPU: 0 UID: 0 PID: 6427 Comm: syz.1.163 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_release+0x7f/0x3a0
Code: 46 a7 2f 0e 00 0f 84 1c 02 00 00 65 8b 05 49 64 30 11 85 c0 0f 85 0d 02 00 00 65 4c 8b 3d 91 1e 30 11 41 83 bf 2c 0b 00 00 00 <0f> 85 f7 01 00 00 49 81 3e c0 33 93 93 0f 84 ea 01 00 00 9c 5b fa
RSP: 0018:ffffc90000007850 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff90637401 RCX: 0000000000000102
RDX: ffffc90000007901 RSI: ffffffff8be74060 RDI: ffffffff8be74020
RBP: dffffc0000000000 R08: ffffc90000007fd0 R09: 0000000000000000
R10: ffffc900000079d8 R11: fffff52000000f3d R12: ffffc90000007fe0
R13: ffffffff8174c0e5 R14: ffffffff8e35a3a0 R15: ffff888170629d40
FS:  00007ff6a1ff26c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc328a49b0 CR3: 0000000177f86000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x1aaa/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1be/0x650
 slab_free_after_rcu_debug+0x5e/0x250
 rcu_core+0xc9e/0x1750
 handle_softirqs+0x22a/0x7c0
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 e2 17 f6 e8 9e 6a 50 f6 fb bf 01 00 00 00 <e8> e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 6c 50 f6 bf 01
RSP: 0018:ffffc90009daf9e0 EFLAGS: 00000206
RAX: 0000000000257c9f RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x53/0x80
Code: 74 05 e8 b0 01 4f f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 e8 14 7b 16 f6 65 8b 05 4d 18 54 07 <85> c0 74 18 5b 41 5e c3 cc cc cc cc cc e8 2b 67 fd ff f7 c3 00 02
RSP: 0018:ffffc90009dafb08 EFLAGS: 00000297
RAX: 0000000080000000 RBX: 0000000000000246 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: 00000000ffffffff
RBP: 1ffffffff1f9e114 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 1ffff1102e0c5438
R13: dffffc0000000000 R14: ffffffff8e360540 R15: 1ffffffff1c6c0c0
 __rcu_report_exp_rnp+0x2d1/0x3d0
 __rcu_read_unlock+0x83/0xe0
 futex_hash+0x1d0/0x2d0
 futex_wake+0x18f/0x580
 do_futex+0x395/0x420
 __se_sys_futex+0x3a8/0x450
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6a119acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6a1ff20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007ff6a1415fa8 RCX: 00007ff6a119acb9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007ff6a1415fac
RBP: 00007ff6a1415fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff6a1416038 R14: 00007ffde5e7e870 R15: 00007ffde5e7e958
 </TASK>
sched: DL replenish lagged too much
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6427 Comm: syz.1.163 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70
Code: 8b 3d 24 6e 15 0c 48 89 de 5b e9 23 69 5c 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 08 e8 0c 11 65 8b 15 29 e8 0c 11 81 e2 00 01 ff 00 74
RSP: 0018:ffffc900000074b8 EFLAGS: 00000802
RAX: ffffffff81afd57f RBX: ffff888121028240 RCX: 000000000000000f
RDX: 0000000000000046 RSI: 0000003a45ffddaa RDI: ffff888121028240
RBP: ffffc90000007618 R08: ffffffff81b08fb7 R09: ffffffff99df0508
R10: dffffc0000000000 R11: ffffffff817422b0 R12: ffff8881210282b8
R13: dffffc0000000000 R14: 1ffff92000000eb0 R15: 000000000000000f
FS:  00007ff6a1ff26c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc328a49b0 CR3: 0000000177f86000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __hrtimer_run_queues+0x8f/0xc30
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x102/0x3d0
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_read_unlock_special+0x1d/0x420
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 8b 2d 8b 76 26 11 f7 c5 00 00 f0 00 74 14 <48> 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 49 89
RSP: 0018:ffffc90000007840 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000246 RCX: 0000000000000101
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: ffffffff8be74080
RBP: ffff88818e328000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: ffffffff8e3605b8
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88812103b8e8
 __rcu_read_unlock+0x83/0xe0
 unwind_next_frame+0x1aaf/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1be/0x650
 slab_free_after_rcu_debug+0x5e/0x250
 rcu_core+0xc9e/0x1750
 handle_softirqs+0x22a/0x7c0
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 e2 17 f6 e8 9e 6a 50 f6 fb bf 01 00 00 00 <e8> e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 6c 50 f6 bf 01
RSP: 0018:ffffc90009daf9e0 EFLAGS: 00000206
RAX: 0000000000257c9f RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x53/0x80
Code: 74 05 e8 b0 01 4f f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 e8 14 7b 16 f6 65 8b 05 4d 18 54 07 <85> c0 74 18 5b 41 5e c3 cc cc cc cc cc e8 2b 67 fd ff f7 c3 00 02
RSP: 0018:ffffc90009dafb08 EFLAGS: 00000297
RAX: 0000000080000000 RBX: 0000000000000246 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8dad37f0 RDI: 00000000ffffffff
RBP: 1ffffffff1f9e114 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: 1ffff1102e0c5438
R13: dffffc0000000000 R14: ffffffff8e360540 R15: 1ffffffff1c6c0c0
 __rcu_report_exp_rnp+0x2d1/0x3d0
 __rcu_read_unlock+0x83/0xe0
 futex_hash+0x1d0/0x2d0
 futex_wake+0x18f/0x580
 do_futex+0x395/0x420
 __se_sys_futex+0x3a8/0x450
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6a119acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6a1ff20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007ff6a1415fa8 RCX: 00007ff6a119acb9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007ff6a1415fac
RBP: 00007ff6a1415fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff6a1416038 R14: 00007ffde5e7e870 R15: 00007ffde5e7e958
 </TASK>
