clocksource: Long readout interval, skipping watchdog check: cs_nsec: 40404403886 wd_nsec: 40404404967
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (9958 ticks this GP) idle=91a4/1/0x4000000000000000 softirq=82593/82615 fqs=5250
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1380617         42            0
rcu: 	cputime:    29934      22555           70   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=81057 q=2453 ncpus=2)
CPU: 0 UID: 0 PID: 21432 Comm: syz.1.4403 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:debug_object_assert_init+0x5e/0x380
Code: 53 fd 48 c7 44 24 28 05 00 00 00 48 89 5c 24 30 4c 89 74 24 38 80 3d 98 a0 d3 0a 00 0f 85 ce 01 00 00 66 90 8b 05 9a b6 bc 09 <3b> 05 98 b6 bc 09 0f 82 00 02 00 00 f3 0f 1e fa 49 bf 00 00 00 00
RSP: 0018:ffffc90000007a80 EFLAGS: 00000246
RAX: 0000000000000120 RBX: ffff888027ac4008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000007aa8
RBP: dffffc0000000000 R08: ffffc90000007aa7 R09: 0000000000000000
R10: ffffc90000007a98 R11: fffff52000000f55 R12: ffff888027ac4008
R13: 0000000100007aac R14: ffffffff8b8cdfa0 R15: 0000000000000000
FS:  00007f1e28b956c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010e99a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __mod_timer+0x4a/0xf30
 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_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock+0x11/0x50
Code: 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 <e8> ca 9e 21 f6 48 89 df e8 22 36 22 f6 bf 01 00 00 00 e8 78 2f 14
RSP: 0018:ffffc9000688fb68 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffffffff8e284200 RCX: 0000000000000001
RDX: ffffffff99b2af80 RSI: ffffffff8238e927 RDI: ffffffff8e284218
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000d11f60 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888022f7b268 R15: ffff88803a875578
 fasync_insert_entry+0x1d7/0x270
 fasync_helper+0x52/0xb0
 perf_fasync+0xc3/0x110
 do_vfs_ioctl+0x1064/0x1430
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1e27d8ebe9
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:00007f1e28b95038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1e27fb5fa0 RCX: 00007f1e27d8ebe9
RDX: 0000200000000400 RSI: 0000000000005452 RDI: 0000000000000006
RBP: 00007f1e27e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1e27fb6038 R14: 00007f1e27fb5fa0 R15: 00007ffdb5dd9b88
 </TASK>
