rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=457c/1/0x4000000000000000 softirq=12515/12515 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1167949          0            0
rcu: 	cputime:    25482      26996           78   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=6025 q=1377 ncpus=2)
CPU: 1 UID: 0 PID: 5985 Comm: syz.2.38 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:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 cb de 01 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900001e0b40 EFLAGS: 00000206
RAX: b90534761b5a2e00 RBX: 0000000000000000 RCX: b90534761b5a2e00
RDX: 0000000000000001 RSI: ffffffff8db863e2 RDI: ffffffff8be29f80
RBP: ffffffff81a8b724 R08: 0000000000000000 R09: ffffffff81a8b724
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000002
R13: ffffffff8e13f1c0 R14: 0000000000000000 R15: 0000000000000246
FS:  00007f17a038f6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000029c0 CR3: 0000000027c0e000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 rcu_core+0xc51/0x1710
 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 1a 2a 2d f6 48 89 df e8 72 c1 2d f6 e8 dd 92 56 f6 fb bf 01 00 00 00 <e8> 42 c1 1f f6 65 8b 05 1b f9 2e 07 85 c0 74 07 5b e9 81 4c 00 00
RSP: 0018:ffffc9000482f540 EFLAGS: 00000286
RAX: b90534761b5a2e00 RBX: ffff88802be1c228 RCX: b90534761b5a2e00
RDX: 0000000000000006 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc9000482f6b8 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff88802be1c000 R14: ffff88802be1c228 R15: 0000000000000000
 clear_inode+0x68/0x190
 evict+0x51f/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 find_next_child+0x1e5/0x250
 simple_recursive_removal+0xf4/0x690
 debugfs_remove+0x5b/0x70
 ieee80211_sta_debugfs_remove+0x40/0x70
 __sta_info_destroy_part2+0x352/0x450
 __sta_info_flush+0x5e4/0x710
 ieee80211_ibss_disconnect+0x2da/0x7c0
 ieee80211_ibss_leave+0x47/0x150
 cfg80211_leave_ibss+0x1e7/0x410
 cfg80211_ibss_wext_siwessid+0x135/0x340
 cfg80211_wext_siwessid+0xd8/0x130
 ioctl_standard_iw_point+0x689/0xd40
 ioctl_standard_call+0xaf/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: 0033:0x7f179f58e9a9
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:00007f17a038f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f179f7b6080 RCX: 00007f179f58e9a9
RDX: 0000200000000000 RSI: 0000000000008b1a RDI: 000000000000000b
RBP: 00007f179f610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f179f7b6080 R15: 00007ffdee2d8cc8
 </TASK>
sched: DL replenish lagged too much
