------------[ cut here ]------------
roc->started
WARNING: net/mac80211/offchannel.c:402 at ieee80211_start_next_roc+0x256/0x2d0 net/mac80211/offchannel.c:402, CPU#2: syz.0.2469/12454
Modules linked in:
CPU: 2 UID: 0 PID: 12454 Comm: syz.0.2469 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 04/01/2014
RIP: 0010:ieee80211_start_next_roc+0x256/0x2d0 net/mac80211/offchannel.c:402
Code: d9 ff e8 cd 6a df f6 48 83 c4 10 5b 5d e9 82 1f 92 00 e8 bd 6a df f6 48 89 df e8 35 61 ff ff e9 36 ff ff ff e8 ab 6a df f6 90 <0f> 0b 90 e9 28 ff ff ff 48 c7 c7 64 71 22 91 e8 26 e4 4f f7 e9 d1
RSP: 0018:ffffc900039e6be0 EFLAGS: 00010246
RAX: 0000000000080000 RBX: ffff888051b50f40 RCX: ffffc9002b25d000
RDX: 0000000000080000 RSI: ffffffff8b2a71f5 RDI: ffff888060408000
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000041
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888051b52a10
FS:  00007fb3fba7f6c0(0000) GS:ffff8880d5fe8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000140 CR3: 0000000051b45000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __ieee80211_scan_completed+0x4fd/0xe30 net/mac80211/scan.c:537
 ieee80211_scan_cancel+0x1cf/0x960 net/mac80211/scan.c:1328
 ieee80211_do_stop+0x1f24/0x29a0 net/mac80211/iface.c:500
 ieee80211_stop+0x165/0x2f0 net/mac80211/iface.c:862
 __dev_close_many+0x312/0x710 net/core/dev.c:1776
 __dev_close net/core/dev.c:1789 [inline]
 __dev_change_flags+0x307/0x850 net/core/dev.c:9752
 netif_change_flags+0x8d/0x160 net/core/dev.c:9817
 do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
 rtnl_group_changelink net/core/rtnetlink.c:3863 [inline]
 __rtnl_newlink net/core/rtnetlink.c:4031 [inline]
 rtnl_newlink+0x1b7e/0x2380 net/core/rtnetlink.c:4159
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738
 __sys_sendmsg+0x160/0x210 net/socket.c:2770
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb3fab9de59
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:00007fb3fba7f028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb3fae26090 RCX: 00007fb3fab9de59
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000007
RBP: 00007fb3fac33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb3fae26128 R14: 00007fb3fae26090 R15: 00007fffc826f488
 </TASK>