------------[ cut here ]------------
WARNING: net/mac80211/iface.c:527 at ieee80211_do_stop+0x2d8/0x2520 net/mac80211/iface.c:527, CPU#3: syz.0.820/8857
Modules linked in:
CPU: 3 UID: 0 PID: 8857 Comm: syz.0.820 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ieee80211_do_stop+0x2d8/0x2520 net/mac80211/iface.c:527
Code: 89 de e8 fb f0 d2 f6 83 fb 04 0f 84 6a 0b 00 00 e8 4d f6 d2 f6 31 ff 44 89 f6 e8 e3 f0 d2 f6 45 85 f6 7e 09 e8 39 f6 d2 f6 90 <0f> 0b 90 e8 30 f6 d2 f6 49 8d bc 24 38 0a 00 00 48 b8 00 00 00 00
RSP: 0018:ffffc9000359ec70 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff8aebedbd
RDX: ffff8880313224c0 RSI: ffffffff8aebedc7 RDI: 0000000000000005
RBP: ffffc9000359ee60 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888031322ff0 R12: ffff888033f34d80
R13: ffffc9000359ed40 R14: 0000000000000001 R15: ffff888033f34008
FS:  00007eff417746c0(0000) GS:ffff8880d6bf6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba1f469f98 CR3: 00000000338da000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ieee80211_stop+0x169/0x320 net/mac80211/iface.c:828
 __dev_close_many+0x29b/0x700 net/core/dev.c:1756
 __dev_close net/core/dev.c:1768 [inline]
 __dev_change_flags+0x4d8/0x6f0 net/core/dev.c:9732
 netif_change_flags+0x8d/0x160 net/core/dev.c:9797
 do_setlink.constprop.0+0xb53/0x4380 net/core/rtnetlink.c:3158
 rtnl_group_changelink net/core/rtnetlink.c:3790 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3944 [inline]
 rtnl_newlink+0x1807/0x1f50 net/core/rtnetlink.c:4072
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
 __sys_sendmsg+0x16d/0x220 net/socket.c:2678
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff4098f7c9
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:00007eff41774038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007eff40be6090 RCX: 00007eff4098f7c9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000000000000004
RBP: 00007eff40a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff40be6128 R14: 00007eff40be6090 R15: 00007ffff26df728
 </TASK>