rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=b5ec/1/0x4000000000000000 softirq=137744/137744 fqs=4866
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1240883          0            0
rcu: 	cputime:    34950      17539           36   ==> 52490(ms)
rcu: 	(t=10502 jiffies g=139293 q=2398 ncpus=2)
CPU: 0 UID: 0 PID: 31400 Comm: syz.6.6876 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:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 9d 37 10 f6 f7 c3 00 02 00 00 74 05 e8 10 ba 3a f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 74 28 02 f6 65 8b 05 3d e4 66 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc90000006df8 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000202 RCX: 0000000000000303
RDX: 0000000000000002 RSI: ffffffff8dcf1fb8 RDI: 0000000000000001
RBP: ffffc90000006ea8 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: ffff88811e381000
R13: ffffea000478e010 R14: ffff888100040840 R15: 0000000000000202
FS:  00007ff0e966c6c0(0000) GS:ffff88818e0a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97d03c6ff8 CR3: 000000018f51e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 get_from_partial_node+0x47a/0x500
 ___slab_alloc+0xae/0x6a0
 __kmalloc_noprof+0x18a/0x760
 ieee802_11_parse_elems_full+0x159/0x2ab0
 ieee80211_inform_bss+0x161/0x1160
 cfg80211_inform_single_bss_data+0xd08/0x1b70
 cfg80211_inform_bss_data+0x24d/0x3be0
 cfg80211_inform_bss_frame_data+0x3c7/0x760
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29e5/0x3710
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 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+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 93 90 03 f6 e8 ae 23 3c f6 fb bf 01 00 00 00 <e8> 23 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 84 25 3c f6 bf 01
RSP: 0018:ffffc90003d07cb0 EFLAGS: 00000202
RAX: 0000000000002915 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000007 RSI: ffffffff8dcf1fb8 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x6/0xb0
Code: e8 af 63 34 03 eb cc 66 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 41 57 <41> 56 53 65 ff 05 30 60 4e 11 e8 9b fc e4 09 89 c3 83 f8 08 73 65
RSP: 0018:ffffc90003d07dd8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 000000001e0a8a00 RSI: ffffffff82133d8f RDI: ffff888172c8c080
RBP: 000000000000000c R08: ffffffff82133d8f R09: ffff888172c8c080
R10: dffffc0000000000 R11: ffffed102c4d6619 R12: 0000000000000001
R13: ffffffff82133d8f R14: ffff888172c8c080 R15: 0000000000000001
 lock_release+0x4b/0x3d0
 __sys_socketpair+0xdd/0x730
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff0e879acb9
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:00007ff0e966c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007ff0e8a15fa0 RCX: 00007ff0e879acb9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007ff0e8808bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff0e8a16038 R14: 00007ff0e8a15fa0 R15: 00007fff15a34cb8
 </TASK>
sched: DL replenish lagged too much
