clocksource: Long readout interval, skipping watchdog check: cs_nsec: 100320102071 wd_nsec: 100320104294
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (9700 ticks this GP) idle=50e4/1/0x4000000000000000 softirq=15615/15615 fqs=4586
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   742093          1            0
rcu: 	cputime:    28637      23842          125   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=8529 q=5804 ncpus=2)
CPU: 0 UID: 0 PID: 6210 Comm: syz.0.98 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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:vprintk_store+0xabc/0xd00
Code: e8 09 3c 1f 00 48 bb 00 00 00 00 00 fc ff df 4d 85 f6 75 07 e8 f5 3b 1f 00 eb 06 e8 ee 3b 1f 00 fb 48 c7 44 24 60 0e 36 e0 45 <49> c7 04 1c 00 00 00 00 49 c7 44 1c 09 00 00 00 00 49 c7 44 1c 14
RSP: 0018:ffffc90000007620 EFLAGS: 00000246
RAX: ffffffff81a0ed02 RBX: dffffc0000000000 RCX: ffff888021cd8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007830 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: 1ffff92000000ed0
R13: 0000000000000068 R14: 0000000000000200 R15: ffff88804b024281
FS:  00007fa743bf66c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 0000000025e1c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000090602
Call Trace:
 <IRQ>
 vprintk_emit+0x21e/0x7a0
 _printk+0xcf/0x120
 clocksource_watchdog+0xdca/0x11c0
 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 1d 21 f6 e8 c6 f0 57 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:ffffc90007767a40 EFLAGS: 00000286
RAX: ed11e39359073e00 RBX: 0000000000000000 RCX: ed11e39359073e00
RDX: 0000000000000006 RSI: ffffffff8d998940 RDI: 0000000000000001
RBP: ffffc90007767ae0 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000eecf48
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:perf_install_in_context+0x595/0x8f0
Code: 4d 89 ec 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 63 41 8b 7d 00 48 c7 c6 30 f0 f0 81 4c 89 f2 b9 01 00 00 00 e8 9d 2c c4 ff 89 c3 <31> ff 89 c6 e8 32 ba cf ff 85 db 74 0c e8 e9 b5 cf ff 83 fb f5 74
RSP: 0018:ffffc90007767ba0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900036d1000 RSI: 0000000000000427 RDI: 0000000000000428
RBP: ffffc90007767cf0 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: 1ffff1100439b002
R13: ffff888021cd8014 R14: ffffc90007767c20 R15: dffffc0000000000
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa745d8e9a9
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:00007fa743bf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fa745fb5fa0 RCX: 00007fa745d8e9a9
RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fa745e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa745fb5fa0 R15: 00007fff77ada308
 </TASK>
sched: DL replenish lagged too much
