rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10488 ticks this GP) idle=24ec/1/0x4000000000000000 softirq=16418/16419 fqs=4660
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   968800          0            0
rcu: 	cputime:    24464      28025           95   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=9417 q=3057 ncpus=2)
CPU: 1 UID: 0 PID: 6465 Comm: syz.1.261 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 9b 93 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> e3 c1 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e09e0 EFLAGS: 00000206
RAX: d5e6b7485c123400 RBX: 0000000000000a06 RCX: d5e6b7485c123400
RDX: 0000000000000002 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc900001e0a70 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff8881090d67e0 R14: ffffffff99cdaf40 R15: 1ffff9200003c13c
FS:  00007f72ee8446c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000283ba000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 debug_object_assert_init+0x20e/0x380
 __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_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1a 2a 2d f6 48 89 df e8 72 c1 2d f6 e8 dd 92 56 f6 fb bf 01 00 00 00 <e8> 42 c1 1f f6 65 8b 05 1b f9 2e 07 85 c0 74 07 5b e9 81 4c 00 00
RSP: 0018:ffffc90007a9fbb0 EFLAGS: 00000282
RAX: d5e6b7485c123400 RBX: ffff888020dda6d0 RCX: d5e6b7485c123400
RDX: 0000000000000000 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90007a9fc80 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff888020ddb258 R14: ffff888020dda6d0 R15: ffff888020dda638
 task_work_run+0x191/0x260
 get_signal+0x11ed/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f72ed98eb69
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:00007f72ee843fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 00007f72edbb5fa0 RCX: 00007f72ed98eb69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f72eda11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f72edbb5fa0 R15: 00007ffd28fcbe18
 </TASK>
