rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=b55c/1/0x4000000000000000 softirq=94193/94445 fqs=5096
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1074543        684            0
rcu: 	cputime:    33054      19422           49   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=61309 q=3849 ncpus=2)
CPU: 0 UID: 0 PID: 16916 Comm: syz.2.2394 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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+0x130e/0x2390
Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49
RSP: 0018:ffffc90000007378 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffffff8fbf6248 RCX: dffffc0000000000
RDX: ffffffff8fbf6248 RSI: ffffffff90400554 RDI: ffffffff8be29ee0
RBP: ffffffff8fbf6248 R08: 0000000000000001 R09: ffffffff8172aae5
R10: ffffc90000007498 R11: ffffffff81ad0050 R12: ffffffff823303f7
R13: ffffffff8fbf6248 R14: ffffc90000007448 R15: ffffffff8fbf6248
FS:  00007fbeb03626c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3305ffff CR3: 000000003ff22000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000082 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000602
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/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
 skb_copy+0x188/0x800
 mac80211_hwsim_tx_frame_no_nl+0xcd3/0x11c0
 mac80211_hwsim_tx_frame+0x1b5/0x200
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __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:stack_depot_save_flags+0x1b1/0x900
Code: 18 e8 13 f6 ca ff 4c 8b 54 24 18 8b 74 24 04 85 db 75 62 4d 8b 24 24 4d 39 fc 74 56 41 39 6c 24 10 75 f0 45 39 54 24 14 75 e9 <31> c0 49 8b 0c c6 49 3b 4c c4 20 75 dc 48 ff c0 41 39 c5 75 ed 83
RSP: 0018:ffffc90006eb7428 EFLAGS: 00000246
RAX: ffff888135400000 RBX: 0000000000000cc0 RCX: 00000000001b2020
RDX: 00000000721d9723 RSI: 0000000000000001 RDI: 00000000df3ecd5c
RBP: 00000000a371b202 R08: 000000005a0868c8 R09: 00000000eec7a1fa
R10: 000000000000000b R11: ffffffff81ad0050 R12: ffff88810fb1e050
R13: 000000000000000b R14: ffffc90006eb74a0 R15: ffff8881355b2020
 kasan_save_track+0x4f/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_lru_noprof+0x1c6/0x3d0
 __d_alloc+0x31/0x6f0
 d_alloc_parallel+0xe0/0x14e0
 path_openat+0xa3b/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbeaf58e9a9
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:00007fbeb0362038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbeaf7b5fa0 RCX: 00007fbeaf58e9a9
RDX: 00000000000026e1 RSI: 00002000000002c0 RDI: ffffffffffffff9c
RBP: 00007fbeaf610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbeaf7b5fa0 R15: 00007ffd729ce0d8
 </TASK>
