rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=7e74/1/0x4000000000000000 softirq=17234/17235 fqs=5250
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1044459          0            0
rcu: 	cputime:    33220      19259           80   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=10233 q=3033 ncpus=2)
CPU: 1 UID: 0 PID: 6830 Comm: syz.2.299 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:lock_acquire+0x58/0x360
Code: 8b 05 dc d4 01 11 48 89 44 24 58 0f 1f 44 00 00 65 8b 05 df d4 01 11 83 f8 08 0f 83 b8 01 00 00 89 c0 48 0f a3 05 88 ad 03 0e <73> 16 e8 f1 f0 08 00 84 c0 75 0d f6 05 e9 90 ed 0d 01 0f 84 d7 01
RSP: 0018:ffffc900001e02d8 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e13f0e0
RBP: ffffffff8172aae5 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900001e04a8 R11: fffff5200003c0a1 R12: 0000000000000002
R13: ffffffff8e13f0e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fcf809d76c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9865ac3480 CR3: 0000000113594000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x2390
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 __netdev_alloc_skb+0x108/0x970
 __ieee80211_beacon_get+0xeeb/0x17b0
 ieee80211_beacon_get_tim+0xb4/0x2b0
 mac80211_hwsim_beacon_tx+0x3ce/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 1d 21 f6 e8 c6 f0 57 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000336f380 EFLAGS: 00000282
RAX: 09e69abba9bbb400 RBX: 0000000000000000 RCX: 09e69abba9bbb400
RDX: 0000000000000006 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc9000336f430 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200066de70
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x69/0x3e0
Code: 05 6c 9c 03 0e 73 16 e8 d5 df 08 00 84 c0 75 0d f6 05 d0 7f ed 0d 01 0f 84 ad 02 00 00 83 3d 8d cd 03 0e 00 0f 84 44 02 00 00 <65> 8b 05 90 03 02 11 85 c0 0f 85 35 02 00 00 65 4c 8b 3c 25 08 10
RSP: 0018:ffffc9000336f4f0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff90b81001 RCX: 09e69abba9bbb400
RDX: ffffc9000336f601 RSI: ffffffff8be29f20 RDI: ffffffff8be29ee0
RBP: dffffc0000000000 R08: ffffc9000336fd00 R09: 0000000000000000
R10: ffffc9000336f678 R11: fffff5200066ded1 R12: ffffc9000336fd10
R13: ffffffff8172aae5 R14: ffffffff8e13f0e0 R15: ffffffff8172aae5
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 kobject_uevent_env+0x27c/0x8c0
 netdev_queue_update_kobjects+0x346/0x6c0
 netdev_register_kobject+0x236/0x2f0
 register_netdevice+0x126c/0x1ae0
 tun_set_iff+0x844/0xef0
 __tun_chr_ioctl+0x788/0x1df0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf7fb8e9a9
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:00007fcf809d7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcf7fdb5fa0 RCX: 00007fcf7fb8e9a9
RDX: 0000200000000040 RSI: 00000000400454ca RDI: 000000000000000a
RBP: 00007fcf7fc10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcf7fdb5fa0 R15: 00007ffda99127d8
 </TASK>
sched: DL replenish lagged too much
