rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=5b04/1/0x4000000000000000 softirq=32372/32373 fqs=5112
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   947874          0            0
rcu: 	cputime:    26374      26114           95   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=27893 q=2049 ncpus=2)
CPU: 1 UID: 0 PID: 10148 Comm: syz.1.1368 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 cb 9e 56 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 13 cd 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e0a40 EFLAGS: 00000206
RAX: f5fb49ad6ae59500 RBX: 0000000000000a06 RCX: f5fb49ad6ae59500
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc900001e0ad0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 1ffff9200003c15c R14: ffffffff8e9c0c98 R15: 1ffff9200003c148
FS:  00007fa44b8e06c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7c66596990 CR3: 0000000020062000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 mix_interrupt_randomness+0x1d9/0x2d0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0x67/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000380fb80 EFLAGS: 00000282
RAX: f5fb49ad6ae59500 RBX: 0000000000000000 RCX: f5fb49ad6ae59500
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc9000380fc20 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000701f70
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__might_fault+0x49/0x130
Code: 64 b4 ff 65 48 8b 1c 25 08 10 a0 92 4c 8d bb a4 17 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 be 00 00 00 45 8b 3f <31> ff 44 89 fe e8 1d 68 b4 ff 45 85 ff 74 15 e8 d3 63 b4 ff 5b 41
RSP: 0018:ffffc9000380fce8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8881279c9cc0 RCX: ffff8881279c9cc0
RDX: 0000000000000000 RSI: 00000000000000a2 RDI: ffffffff8be25700
RBP: 00000000000000a2 R08: ffffc9000380fe17 R09: 0000000000000000
R10: ffffc9000380fd80 R11: fffff52000701fc3 R12: dffffc0000000000
R13: 0000000000000094 R14: ffffffff8be25700 R15: 0000000000000000
 _copy_from_user+0x28/0xb0
 __sys_bpf+0x1ed/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa44a98e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa44b8e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fa44abb5fa0 RCX: 00007fa44a98e9a9
RDX: 0000000000000094 RSI: 000020000000e000 RDI: 0000000000000005
RBP: 00007fa44aa10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa44abb5fa0 R15: 00007fff74b1d1e8
 </TASK>
sched: DL replenish lagged too much
