rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=4adc/1/0x4000000000000000 softirq=14166/14167 fqs=5245
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   981104          0            0
rcu: 	cputime:    24476      28023           93   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=6709 q=3334 ncpus=2)
CPU: 1 UID: 0 PID: 5939 Comm: syz.2.20 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: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 92 37 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: 0000:ffffc900001e01a0 EFLAGS: 00000206
RAX: 64f08cfe3711a600 RBX: 1ffff9200003c03c RCX: 64f08cfe3711a600
RDX: 0000000000000002 RSI: ffffffff8d9987c6 RDI: ffffffff8be29f80
RBP: ffffc900001e0298 R08: ffffffff8fa1eaf7 R09: 1ffffffff1f43d5e
R10: dffffc0000000000 R11: fffffbfff1f43d5f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007febe8e0e6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb20000 CR3: 000000010b54c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_mempool_unpoison_object+0xa0/0x170
 napi_skb_cache_get+0x37b/0x6d0
 __alloc_skb+0x11e/0x2d0
 napi_alloc_skb+0x84/0x7d0
 e1000_clean_rx_irq+0x448/0x1170
 e1000_clean+0xca4/0x2b00
 __napi_poll+0xc7/0x480
 net_rx_action+0x707/0xe30
 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_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: 0000:ffffc9000471f4c0 EFLAGS: 00000206
RAX: 64f08cfe3711a600 RBX: 0000000000000a02 RCX: 64f08cfe3711a600
RDX: 0000000000000006 RSI: ffffffff8d9987c6 RDI: 0000000000000001
RBP: ffffc9000471f550 R08: ffffffff8fa1eaf7 R09: 1ffffffff1f43d5e
R10: dffffc0000000000 R11: fffffbfff1f43d5f R12: dffffc0000000000
R13: ffff888021482d90 R14: ffffffff99d4fc70 R15: 1ffff920008e3e98
 debug_object_activate+0x2e2/0x420
 call_rcu+0xaa/0x9c0
 __destroy_inode+0x2da/0x670
 evict+0x797/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 find_next_child+0x1e5/0x250
 simple_recursive_removal+0xf4/0x690
 debugfs_remove+0x5b/0x70
 ieee80211_debugfs_remove_netdev+0x52/0xb0
 ieee80211_teardown_sdata+0x5a/0x140
 ieee80211_if_change_type+0x461/0x990
 ieee80211_change_iface+0xd5/0x510
 cfg80211_change_iface+0x795/0xef0
 cfg80211_wext_siwmode+0x1db/0x2a0
 ioctl_standard_call+0xcb/0x1b0
 wext_ioctl_dispatch+0xee/0x410
 wext_handle_ioctl+0x100/0x1c0
 sock_ioctl+0x15f/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7febe7f8eb69
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:00007febe8e0e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007febe81b5fa0 RCX: 00007febe7f8eb69
RDX: 0000200000000080 RSI: 0000000000008b06 RDI: 0000000000000009
RBP: 00007febe8011df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007febe81b5fa0 R15: 00007fff21f801a8
 </TASK>
sched: DL replenish lagged too much
