rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=8f4c/1/0x4000000000000000 softirq=13041/13042 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1215322          0            0
rcu: 	cputime:    25445      27044           76   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=6477 q=3721 ncpus=2)
CPU: 1 UID: 0 PID: 6027 Comm: syz.0.64 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:unwind_next_frame+0x19ae/0x2390
Code: c7 e0 44 88 8b be 66 03 00 00 48 c7 c2 80 45 88 8b e8 76 a2 2b 00 48 c7 c7 e0 f0 13 8e 4c 89 fe e8 57 88 2b 00 e8 72 1e 35 00 <89> d8 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9a 9f
RSP: 0018:ffffc900001e06d8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffffff903ebd01 RCX: 143f9b58906b9100
RDX: 0000000000000000 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: dffffc0000000000 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffc900001e0b28
R13: ffffc900001d9000 R14: ffffc900001e07a8 R15: ffffffff8172aae5
FS:  00007f23978af6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23978aefc8 CR3: 0000000106b44000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kfree+0x18e/0x440
 slab_free_after_rcu_debug+0x60/0x2a0
 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:_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 4a 35 2d f6 48 89 df e8 a2 cc 2d f6 e8 0d 9e 56 f6 fb bf 01 00 00 00 <e8> 72 cc 1f f6 65 8b 05 1b f9 2e 07 85 c0 74 07 5b e9 81 4c 00 00
RSP: 0018:ffffc9000322fdf0 EFLAGS: 00000286
RAX: 143f9b58906b9100 RBX: ffff88801f5e8a10 RCX: 143f9b58906b9100
RDX: 0000000000000000 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc9000322fec0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff8880297d0ad8 R14: ffff88801f5e8a10 R15: ffff88801f5e8978
 task_work_run+0x191/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f239698e9a9
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:00007f23978af038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000003 RBX: 00007f2396bb5fa0 RCX: 00007f239698e9a9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007f2396a10d69 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2396bb5fa0 R15: 00007ffc89b0fc28
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105579581293 wd_nsec: 105579580339
