rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=cffc/1/0x4000000000000000 softirq=15252/15255 fqs=4342
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   905540          2            0
rcu: 	cputime:    33597      18902           52   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=8301 q=3148 ncpus=2)
CPU: 0 UID: 0 PID: 6081 Comm: syz.2.56 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410 #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_release+0x2b5/0x3e0
Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 7b d1 02 11 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90000006b30 EFLAGS: 00000206
RAX: 03218765e5f0cf00 RBX: 0000000000000202 RCX: 03218765e5f0cf00
RDX: 0000000000000007 RSI: ffffffff8dba600c RDI: ffffffff8be33300
RBP: ffff888108f9e248 R08: ffffc90003eaff48 R09: 0000000000000000
R10: ffffc90000006cb8 R11: fffff52000000d99 R12: 0000000000000007
R13: 0000000000000007 R14: ffffffff8e139ee0 R15: ffff888108f9d640
FS:  00007f353640f6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b5127cfc8 CR3: 0000000028da2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000010602
Call Trace:
 <IRQ>
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kvfree_call_rcu+0xbb/0x410
 cfg80211_update_known_bss+0x634/0x1330
 __cfg80211_bss_update+0x147/0x2120
 cfg80211_inform_single_bss_data+0xba9/0x1ac0
 cfg80211_inform_bss_data+0x1fb/0x3b30
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x746/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x201c/0x2a90
 ieee80211_rx_napi+0x1a8/0x3d0
 ieee80211_handle_queued_frames+0xe8/0x1f0
 tasklet_action_common+0x36c/0x580
 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_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 eb e3 02 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:ffffc90003eaf278 EFLAGS: 00000206
RAX: 03218765e5f0cf00 RBX: 0000000000000000 RCX: 03218765e5f0cf00
RDX: 0000000000000000 RSI: ffffffff8dba600c RDI: ffffffff8be33300
RBP: ffffffff820ffb9e R08: 0000000000000000 R09: ffffffff820ffb9e
R10: ffffc90003eaf5c0 R11: fffff520007d5eba R12: 0000000000000000
R13: ffff8880256cbd38 R14: 0000000000000001 R15: 0000000000000246
 _raw_spin_lock+0x2e/0x40
 __pte_offset_map_lock+0x13e/0x210
 copy_pmd_range+0x672/0x71d0
 copy_page_range+0xc14/0x1270
 dup_mmap+0xf57/0x1ac0
 copy_mm+0x13c/0x4b0
 copy_process+0x1706/0x3c00
 kernel_clone+0x21e/0x840
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f353558ebe9
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:00007f353640efe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f35357b5fa0 RCX: 00007f353558ebe9
RDX: 0000000000000000 RSI: 0000200000000c50 RDI: 0000000000000200
RBP: 00007f3535611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f35357b6038 R14: 00007f35357b5fa0 R15: 00007fff6169e548
 </TASK>
sched: DL replenish lagged too much
