rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10498 ticks this GP) idle=98cc/1/0x4000000000000000 softirq=13947/14094 fqs=5207
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1058369        438            0
rcu: 	cputime:    35723      16765           47   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=6589 q=1293 ncpus=2)
CPU: 1 UID: 0 PID: 6064 Comm: syz.2.48 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10 #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 6b dd 54 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> 13 b6 1d f6 65 8b 05 0c a0 27 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e0a40 EFLAGS: 00000206
RAX: 80445d483dec7e00 RBX: 0000000000000a06 RCX: 80445d483dec7e00
RDX: 0000000000000000 RSI: ffffffff8d9792e3 RDI: 0000000000000001
RBP: ffffc900001e0ad0 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: dffffc0000000000
R13: ffff88810c867d80 R14: ffffffff99c32228 R15: 1ffff9200003c148
FS:  00007fd3e3a686c0(0000) GS:ffff8881a3c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffee81e9198 CR3: 0000000026d60000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 debug_check_no_obj_freed+0x451/0x470
 slab_free_after_rcu_debug+0xc4/0x2a0
 rcu_core+0xca8/0x1710
 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:_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 6a 20 2b f6 48 89 df e8 c2 b7 2b f6 e8 ad dc 54 f6 fb bf 01 00 00 00 <e8> 72 b5 1d f6 65 8b 05 6b 9f 27 07 85 c0 74 07 5b e9 51 4c 00 00
RSP: 0018:ffffc900067afc80 EFLAGS: 00000282
RAX: 80445d483dec7e00 RBX: ffff88801eff0000 RCX: 80445d483dec7e00
RDX: 0000000000000000 RSI: ffffffff8d9792e3 RDI: 0000000000000001
RBP: 0000000000000009 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffff88802005df88
R13: 1ffff11003df9d35 R14: ffff88801efce9ac R15: ffff88802005d640
 get_signal+0x103e/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: 0033:0x7fd3e2b8ebe9
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:00007fd3e3a68038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 000000000000004c RBX: 00007fd3e2db5fa0 RCX: 00007fd3e2b8ebe9
RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fd3e2c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3e2db6038 R14: 00007fd3e2db5fa0 R15: 00007fff6a0d7398
 </TASK>
