rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=efa4/1/0x4000000000000000 softirq=14979/14979 fqs=5246
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1083744          0            0
rcu: 	cputime:    25092      27397          108   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=8329 q=16295 ncpus=2)
CPU: 1 UID: 0 PID: 6053 Comm: syz.1.65 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:ffffc900001e0980 EFLAGS: 00000206
RAX: a0fb2c5ff2aa5e00 RBX: 0000000000000a06 RCX: a0fb2c5ff2aa5e00
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc900001e0a00 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff888027d3a2d8 R14: ffffffff99cee188 R15: 1ffff9200003c130
FS:  00007f5a49ac26c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 000000010eb08000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 debug_object_assert_init+0x20e/0x380
 __mod_timer+0x4a/0xf30
 lapb_t1timer_expiry+0x745/0xab0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 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:ffffc9000609f7a0 EFLAGS: 00000286
RAX: a0fb2c5ff2aa5e00 RBX: 0000000000000000 RCX: a0fb2c5ff2aa5e00
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc9000609f840 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000c13ef4
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x37/0x90
Code: 08 10 a0 92 65 8b 0d 28 e4 df 10 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 3c 16 00 00 00 74 52 8b 8a 18 16 00 00 <83> f9 03 75 47 48 8b 8a 20 16 00 00 44 8b 8a 1c 16 00 00 49 c1 e1
RSP: 0018:ffffc9000609f900 EFLAGS: 00000246
RAX: ffffffff84f4bf32 RBX: ffffffffffffff00 RCX: 0000000000000000
RDX: ffff888020f53980 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00000000fffffff9 R08: ffff88801f1eeb67 R09: 1ffff11003e3dd6c
R10: dffffc0000000000 R11: ffffed1003e3dd6d R12: 0000000000000020
R13: 0000000000000006 R14: ffffffff8de16798 R15: ffffffff00000001
 percpu_counter_add_batch+0xc2/0x1e0
 alloc_empty_file+0xba/0x1d0
 path_openat+0x107/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5a48b8e9a9
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:00007f5a49ac2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f5a48db5fa0 RCX: 00007f5a48b8e9a9
RDX: 0000000000200002 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f5a48c10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5a48db5fa0 R15: 00007ffc2926ab48
 </TASK>
sched: DL replenish lagged too much
