clocksource: Long readout interval, skipping watchdog check: cs_nsec: 82829095188 wd_nsec: 82829097039
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10465 ticks this GP) idle=f14c/1/0x4000000000000000 softirq=15061/15062 fqs=3992
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   959283          5            0
rcu: 	cputime:    32213      20266           64   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=7685 q=8803 ncpus=2)
CPU: 1 UID: 0 PID: 6134 Comm: syz.2.82 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:unwind_next_frame+0x10e/0x2390
Code: 82 1a 0e 00 75 1f c6 05 3f 82 1a 0e 01 48 c7 c7 c0 3e 88 8b be 4b 03 00 00 48 c7 c2 00 3f 88 8b e8 a7 c4 2a 00 4c 89 6c 24 70 <48> 89 5c 24 68 4d 8d 6e 50 4c 89 e8 48 c1 e8 03 48 89 44 24 38 80
RSP: 0018:ffffc900001dfd38 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8184f4da RCX: ac366bcf33398600
RDX: 0000000000000000 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8172c195
R10: ffffc900001dfe58 R11: ffffffff81ac3930 R12: 1ffff9200003bfc1
R13: ffffc900001dfe40 R14: ffffc900001dfe08 R15: ffffffff8172c195
FS:  00007f02ddd8a6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010fa20000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000099060a
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 cfg80211_inform_single_bss_data+0x905/0x1ac0
 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: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 fb 88 15 f6 e8 36 e3 4c f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90004e2f540 EFLAGS: 00000286
RAX: ac366bcf33398600 RBX: 0000000000000000 RCX: ac366bcf33398600
RDX: 0000000000000007 RSI: ffffffff8d9b6a7d RDI: 0000000000000001
RBP: ffffc90004e2f5e0 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920009c5ea8
 irqentry_exit+0x6f/0x90
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:mtree_range_walk+0x466/0x840
Code: 2f 0f b6 c3 4d 8d 34 c6 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 dd 15 b2 f6 49 8b 06 <48> 89 44 24 30 e8 20 43 08 00 41 89 c6 31 ff 89 c6 e8 c4 a4 4e f6
RSP: 0018:ffffc90004e2f6a0 EFLAGS: 00000246
RAX: ffff888107f3540c RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc9002101c000 RSI: 0000000000000c6c RDI: ffffc90004e2f7c0
RBP: ffff88810bf88b00 R08: ffff888108119cc0 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000002 R12: 0000000000000000
R13: 00007f02db1f7fff R14: ffff88810af9e250 R15: ffff88810af9e200
 mt_find+0x23f/0x5f0
 find_vma+0xe7/0x160
 lock_mm_and_find_vma+0x5f/0x300
 do_user_addr_fault+0x331/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:strncpy_from_user+0x1bc/0x290
Code: c1 e8 03 49 01 c4 e9 8d 00 00 00 e8 0e 31 c1 fc 48 f7 dd 49 89 ec 48 8b 1c 24 31 ff 4c 89 ee e8 da 35 c1 fc 49 83 ed 01 72 44 <43> 8a 2c 27 4a 8d 3c 23 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc90004e2fb18 EFLAGS: 00010206
RAX: ffffffff84fe7b56 RBX: ffffc90004e2fc30 RCX: ffff888108119cc0
RDX: 0000000000000002 RSI: 000000000000007f RDI: 0000000000000000
RBP: fffffffffffffff8 R08: ffffc90004e2fcae R09: 1ffff920009c5f95
R10: dffffc0000000000 R11: fffff520009c5f96 R12: 0000000000000000
R13: 000000000000007e R14: 000000000000007f R15: 0000000000000000
 bpf_prog_load+0xc23/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f02dcf8eba9
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:00007f02ddd8a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f02dd1d5fa0 RCX: 00007f02dcf8eba9
RDX: 0000000000000094 RSI: 00002000000005c0 RDI: 0000000000000005
RBP: 00007f02dd011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f02dd1d6038 R14: 00007f02dd1d5fa0 R15: 00007fff6314da78
 </TASK>
sched: DL replenish lagged too much
