rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=118c/1/0x4000000000000000 softirq=15821/15821 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1017432          0            0
rcu: 	cputime:    35557      16942           88   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=10581 q=3092 ncpus=2)
CPU: 0 UID: 0 PID: 6729 Comm: syz.0.240 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:handle_softirqs+0x160/0x870
Code: 89 6c 24 20 0f b7 db 48 c7 c7 c0 28 cb 8b e8 97 f2 26 0a 65 66 c7 05 05 65 94 11 00 00 e8 98 8f 45 00 fb 48 c7 c5 c0 c0 40 8e <b8> ff ff ff ff 0f bc c3 41 89 c6 41 ff c6 0f 84 30 04 00 00 89 5c
RSP: 0018:ffffc90000007f38 EFLAGS: 00000202
RAX: 00000000000013fe RBX: 0000000000000202 RCX: 0000000000000101
RDX: 0000000000000000 RSI: ffffffff8def9047 RDI: ffffffff8c27ca00
RBP: ffffffff8e40c0c0 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888104f9ba80 R15: 0000000000000000
FS:  00007f6371d8d6c0(0000) GS:ffff88818de5a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6370fe9f00 CR3: 000000016d336000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __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 e3 e7 e3 f5 e8 4e 86 1d f6 fb bf 01 00 00 00 <e8> c3 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 88 1d f6 bf 01
RSP: 0018:ffffc90004f27c60 EFLAGS: 00000202
RAX: 000000000000131f RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8def9047 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:dput+0x0/0x1a0
Code: ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 7c ab 48 89 df e8 83 0a e7 ff eb a1 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 56 53 49 89 fe e8 20 a9 7c ff 4d 85 f6 74 66 48
RSP: 0018:ffffc90004f27d88 EFLAGS: 00000283
RAX: ffffffff8242c686 RBX: ffff88816bd2c400 RCX: 0000000000080000
RDX: ffffc90008431000 RSI: 00000000000000a0 RDI: ffff888167c908d0
RBP: 0000000000000003 R08: ffff8881ba96c99f R09: 1ffff1103752d933
R10: dffffc0000000000 R11: ffffed103752d934 R12: ffff88816bd2c440
R13: dffffc0000000000 R14: ffff888160ac2c20 R15: ffff88816bd2c480
 __fput+0x691/0xa70
 fput_close_sync+0x11f/0x240
 __x64_sys_close+0x7e/0x110
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6370f9c819
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:00007f6371d8d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f6371215fa0 RCX: 00007f6370f9c819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f6371032c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6371216038 R14: 00007f6371215fa0 R15: 00007ffe451abe48
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104848646822 wd_nsec: 104848648919
