rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=6cd4/1/0x4000000000000000 softirq=17610/18235 fqs=5209
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1201770       1064            0
rcu: 	cputime:    32460      20022           49   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=10121 q=2447 ncpus=2)
CPU: 0 UID: 0 PID: 6203 Comm: syz.2.74 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:ieee80211_inform_bss+0xa38/0x10a0
Code: 9c 00 00 00 49 81 c6 80 07 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 01 a9 37 f7 41 bc a8 01 00 00 4d 03 26 <4c> 8d 73 24 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 10 04
RSP: 0018:ffffc900000070c0 EFLAGS: 00000282
RAX: 1ffff110224921d0 RBX: ffff88803c6b5828 RCX: ffff888106e30000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000071f0 R08: 000000006c604830 R09: 1ffff11007177a1c
R10: dffffc0000000000 R11: ffffed1007177a1d R12: ffff8881124908a8
R13: dffffc0000000000 R14: ffff888112490e80 R15: ffff88803fc4de44
FS:  00007f3e390696c0(0000) GS:ffff8880b8611000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000240 CR3: 0000000028012000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 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:rcu_read_unlock_special+0x87/0x4b0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 92 be f9 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc9000668e120 EFLAGS: 00000206
RAX: a323f4546969e300 RBX: 1ffff92000cd1c28 RCX: a323f4546969e300
RDX: 0000000000000006 RSI: ffffffff8d9baf27 RDI: ffffffff8be34480
RBP: ffffc9000668e1e8 R08: ffffffff8fa3b537 R09: 1ffffffff1f476a6
R10: dffffc0000000000 R11: fffffbfff1f476a7 R12: ffffffff8e13f400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x84/0xe0
 __account_obj_stock+0x96/0x310
 refill_obj_stock+0x32c/0x850
 __memcg_slab_free_hook+0x127/0x3d0
 kmem_cache_free+0x223/0x400
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 __kernfs_new_node+0x602/0x7e0
 kernfs_new_node+0x102/0x210
 __kernfs_create_file+0x4b/0x2e0
 sysfs_add_file_mode_ns+0x238/0x300
 internal_create_group+0x66d/0x1110
 sysfs_create_groups+0x59/0x120
 ib_setup_port_attrs+0xd96/0x2070
 ib_register_device+0x10a6/0x1380
 rxe_register_device+0x1ef/0x310
 rxe_net_add+0x81/0x110
 rxe_newlink+0xdd/0x190
 nldev_newlink+0x4a5/0x5a0
 rdma_nl_rcv+0x6ae/0x980
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e3818ec29
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:00007f3e39069038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3e383d5fa0 RCX: 00007f3e3818ec29
RDX: 0000000000040000 RSI: 0000200000000540 RDI: 0000000000000006
RBP: 00007f3e38211e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e383d6038 R14: 00007f3e383d5fa0 R15: 00007ffc698e89e8
 </TASK>
