rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=5f74/1/0x4000000000000000 softirq=13071/13072 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1029739          0            0
rcu: 	cputime:    24453      28036           87   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=5425 q=2497 ncpus=2)
CPU: 1 UID: 0 PID: 5913 Comm: syz.1.9 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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: 0018:ffffc900001e0b40 EFLAGS: 00000206
RAX: 3e45aef65ed4b600 RBX: 1ffff9200003c170 RCX: 3e45aef65ed4b600
RDX: 0000000000000002 RSI: ffffffff8d9986f9 RDI: ffffffff8be29f80
RBP: ffffc900001e0c28 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007f64721e06c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f64721dffc8 CR3: 00000000283c8000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:lock_is_held_type+0x137/0x190
Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 f9 82 31 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc9000390f6b8 EFLAGS: 00000206
RAX: 3e45aef65ed4b600 RBX: 0000000000000000 RCX: 3e45aef65ed4b600
RDX: 0000000000000000 RSI: ffffffff8db863da RDI: ffffffff8be29f80
RBP: 00000000ffffffff R08: ffff88810bb3d1b7 R09: 1ffff11021767a36
R10: dffffc0000000000 R11: ffffed1021767a37 R12: 0000000000000246
R13: ffff888106048000 R14: ffffffff8e13f160 R15: 0000000000000004
 __might_resched+0xf5/0x610
 down_write+0x76/0x1f0
 kernfs_add_one+0x20d/0x520
 __kernfs_create_file+0x22b/0x2e0
 cgroup_addrm_files+0x7f2/0xb20
 css_populate_dir+0x124/0x3d0
 cgroup_apply_control_enable+0x58a/0xa80
 cgroup_mkdir+0xc40/0xe60
 kernfs_iop_mkdir+0x211/0x350
 vfs_mkdir+0x306/0x510
 do_mkdirat+0x247/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f647138eb69
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:00007f64721e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f64715b6080 RCX: 00007f647138eb69
RDX: 00000000000001ff RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f6471411df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f64715b6080 R15: 00007ffeca733478
 </TASK>
sched: DL replenish lagged too much
