rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=626c/1/0x4000000000000000 softirq=57676/57678 fqs=4865
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1043998          0            0
rcu: 	cputime:    25762      26727           97   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=39457 q=6933 ncpus=2)
CPU: 1 UID: 0 PID: 12548 Comm: syz.5.1931 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-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:stack_trace_consume_entry+0x4/0x280
Code: 65 f0 5b 41 5e 5d c3 cc cc cc cc cc e8 b5 87 c1 09 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc900001e07e0 EFLAGS: 00000286
RAX: ffffffff81acfffc RBX: ffffc900001e08a0 RCX: 47a5a957e33d2800
RDX: ffffc900001e0801 RSI: ffffffff81acfffc RDI: ffffc900001e08a0
RBP: ffffc900001e0870 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: ffffffff81ad0050 R12: ffff8880260a9cc0
R13: 0000000000000000 R14: ffffffff81ad0050 R15: ffffc900001e07e8
FS:  00007fe13443a6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdf35de518 CR3: 00000000452fc000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x110/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 rcu_core+0xca8/0x1710
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000455f800 EFLAGS: 00000286
RAX: 47a5a957e33d2800 RBX: 0000000000000000 RCX: 47a5a957e33d2800
RDX: 0000000000000007 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc9000455f8a0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008abf00
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:acct_collect+0x1aa/0x770
Code: 48 c7 c6 ff ff ff ff e8 14 29 b1 09 48 85 c0 0f 84 cd 00 00 00 49 89 c5 31 db 49 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 9f dc 6d 00 4d 8b 7d 08 4c 89 e8 48 c1 e8 03 42 80 3c 30
RSP: 0018:ffffc9000455f960 EFLAGS: 00000246
RAX: 1ffff110074c9981 RBX: 0000000004c6c000 RCX: ffff8880260a9cc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88803a64cc08
RBP: ffffc9000455fad0 R08: ffff8880260a9cc0 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000000 R12: ffffc9000455fa00
R13: ffff88803a64cc00 R14: dffffc0000000000 R15: 00007fe132fff000
 do_exit+0x5c3/0x22e0
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 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: 0033:0x7fe13358e9a9
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:00007fe13443a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 00000000000000d8 RBX: 00007fe1337b5fa0 RCX: 00007fe13358e9a9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007fe133610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe1337b5fa0 R15: 00007fff1392a058
 </TASK>
