rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=0cdc/1/0x4000000000000000 softirq=15027/15027 fqs=5246
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1088232          0            0
rcu: 	cputime:    25632      26856           95   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=9393 q=5654 ncpus=2)
CPU: 1 UID: 0 PID: 6366 Comm: syz.0.160 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:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 62 2c f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e0620 EFLAGS: 00000206
RAX: d61ebe0c79572700 RBX: 1ffff9200003c0cc RCX: d61ebe0c79572700
RDX: 0000000000000000 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: ffffc900001e0720 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007fd0b7c1e6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35e40d CR3: 0000000021c52000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 is_module_text_address+0x190/0x1e0
 kernel_text_address+0x94/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/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:stack_depot_save_flags+0x168/0x900
Code: c8 31 c5 c1 c0 18 29 c5 48 8b 05 33 7e e7 14 8b 0d 25 7e e7 14 21 e9 48 c1 e1 04 4c 8d 3c 08 65 ff 05 dc a6 a9 0d 4c 8b 24 08 <4d> 39 fc 0f 84 88 00 00 00 45 89 d5 eb 2d 90 0f 0b 90 31 c0 e9 ce
RSP: 0018:ffffc90007c47a48 EFLAGS: 00000282
RAX: ffff888135400000 RBX: 0000000000000000 RCX: 000000000050ca30
RDX: 00000000fa17d2b0 RSI: 0000000000000001 RDI: 000000004eae0140
RBP: 00000000ec550ca3 R08: 000000007d0b4954 R09: 0000000013ddb212
R10: 0000000000000009 R11: ffffffff81ad0050 R12: ffff888020a14940
R13: 0000000000000000 R14: ffffc90007c47ac0 R15: ffff88813590ca30
 kasan_save_track+0x4f/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 __fput+0x6c2/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd0b6d8e9a9
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:00007fd0b7c1e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff7 RBX: 00007fd0b6fb5fa0 RCX: 00007fd0b6d8e9a9
RDX: 0000000000000000 RSI: 0000000000008b23 RDI: 0000000000000004
RBP: 00007fd0b6e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd0b6fb5fa0 R15: 00007ffd818b0a88
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105151594026 wd_nsec: 105151593175
