rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=3ce4/1/0x4000000000000000 softirq=17388/17395 fqs=3811
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1302567          0            0
rcu: 	cputime:     8446      44052           34   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=12821 q=5016 ncpus=2)
CPU: 0 UID: 0 PID: 6535 Comm: syz.2.231 Not tainted syzkaller #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:__kernel_text_address+0x0/0x30
Code: c1 03 38 c1 7c c1 48 c7 c7 80 70 30 90 e8 a8 37 a1 00 eb b3 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 53 48 89 fb e8 33 00 00 00 48 81 fb 00 00 9c 91 0f 93
RSP: 0018:ffffc90000006e60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000006ed0 RCX: 0000000000000103
RDX: 0000000000000008 RSI: ffffffff8e21d80b RDI: ffffffff8b212818
RBP: ffffc90000006f10 R08: ffffc90000007b10 R09: 0000000000000000
R10: ffffc90000006ed8 R11: fffff52000000ddd R12: ffff8881721f3b00
R13: ffff888106789380 R14: dffffc0000000000 R15: 1ffff92000000dda
FS:  00007f07d43f66c0(0000) GS:ffff88818dc89000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c347eb4 CR3: 0000000114a22000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfb/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x35c/0x760
 cfg80211_inform_single_bss_data+0x934/0x1af0
 cfg80211_inform_bss_data+0x266/0x3c40
 cfg80211_inform_bss_frame_data+0x3c7/0x730
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29f8/0x3740
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__srcu_check_read_flavor+0xb/0x250
Code: 01 0a cc 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 <41> 54 53 48 83 ec 10 89 f3 49 89 fe 83 fe 02 74 17 83 fb 04 74 12
RSP: 0018:ffffc90007d671a8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8e9bcdc0
RBP: ffffffff823ca9ba R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff940008f8719 R12: 0000000000000002
R13: ffffffff8e95ce20 R14: 0000000000000000 R15: 0000000000000000
 lock_acquire+0x2bd/0x350
 pfn_valid+0xd6/0x480
 page_table_check_set+0x25/0x510
 copy_pmd_range+0x486a/0x5970
 copy_page_range+0xbe8/0x11f0
 dup_mmap+0xf40/0x1d90
 copy_mm+0x13b/0x4a0
 copy_process+0x1f1c/0x4440
 kernel_clone+0x284/0x8f0
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f07d619cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f07d43f5fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f07d6415fa0 RCX: 00007f07d619cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000849000
RBP: 00007f07d6232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f07d6416038 R14: 00007f07d6415fa0 R15: 00007ffc5357f6f8
 </TASK>
sched: DL replenish lagged too much
