rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=35ec/1/0x4000000000000000 softirq=17147/112215 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   238496      54388            0
rcu: 	cputime:     5255      42281         5020   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=10617 q=4349 ncpus=2)
CPU: 1 UID: 0 PID: 6365 Comm: syz.1.107 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:raw_spin_rq_unlock_irq+0x13/0x90
Code: cc e8 21 08 e7 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 e8 c4 9e e9 09 e8 ef 26 35 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc cc f3 0f 1e fa 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc90004d77808 EFLAGS: 00000286
RAX: 4123701afae34f00 RBX: ffff888136639f80 RCX: 4123701afae34f00
RDX: 0000000000000000 RSI: ffffffff8d9b6a5f RDI: ffffffff8be33300
RBP: ffffc90004d77a30 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881006d5640 R15: 1ffff11026cc7551
FS:  00007f67f543f6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000011678a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __schedule+0x19e0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 try_to_wake_up+0x82b/0x12b0
 wake_up_q+0x85/0xd0
 futex_wake+0x4a0/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f67f458ebe9
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:00007f67f543f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f67f47c5fa8 RCX: 00007f67f458ebe9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f67f47c5fac
RBP: 00007f67f47c5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000027 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f67f47c6038 R14: 00007ffd341507b0 R15: 00007ffd34150898
 </TASK>
