IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9541 Comm: syz-executor.4 Not tainted 4.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88013495c800 task.stack: ffff880137650000
RIP: 0010:[<ffffffff863ab34d>]  [<ffffffff863ab34d>] ieee80211_chanctx_num_assigned+0x9d/0x120 net/mac80211/chan.c:20
RSP: 0018:ffff8801376573c8  EFLAGS: 00010a02
RAX: 0000000000000002 RBX: deacfffffffff9c8 RCX: ffff88013495d010
RDX: 1bd5a00000000020 RSI: ffff88013312f900 RDI: dead000000000100
RBP: ffff8801376573e8 R08: ffff88013a63d378 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88013312f920
R13: dffffc0000000000 R14: ffff88013312f900 R15: 0000000000000000
FS:  00007f368a96b700(0000) GS:ffff88013bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc29fccf78 CR3: 000000013af37000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88012df38a60 ffff88013a63cc40 ffff88012df38a60 0000000000000000
 ffff880137657448 ffffffff863b2712 0000000000000282 ffff88013a63dc70
 ffff88012df39cc0 ffff88012df39a20 ffff88013a63db48 ffff88013a63cc40
Call Trace:
 [<ffffffff863b2712>] ieee80211_assign_vif_chanctx+0x3b2/0x1250 net/mac80211/chan.c:675
 [<ffffffff863b5c58>] __ieee80211_vif_release_channel+0x138/0x2d0 net/mac80211/chan.c:1542
 [<ffffffff863b7c53>] ieee80211_vif_release_channel+0xe3/0x1c0 net/mac80211/chan.c:1756
 [<ffffffff86312e8d>] ieee80211_ibss_disconnect+0x59d/0xc50 net/mac80211/ibss.c:742
 [<ffffffff8631983f>] ieee80211_ibss_leave+0xf/0xe0 net/mac80211/ibss.c:1853
 [<ffffffff86339e80>] ieee80211_leave_ibss+0x10/0x20 net/mac80211/cfg.c:2086
 [<ffffffff8622c375>] rdev_leave_ibss net/wireless/rdev-ops.h:519 [inline]
 [<ffffffff8622c375>] __cfg80211_leave_ibss+0x135/0x690 net/wireless/ibss.c:211
 [<ffffffff8622c927>] cfg80211_leave_ibss+0x57/0x80 net/wireless/ibss.c:228
 [<ffffffff861954ac>] cfg80211_change_iface+0xcfc/0x12a0 net/wireless/util.c:1035
 [<ffffffff861d4254>] nl80211_set_interface+0x814/0xd90 net/wireless/nl80211.c:2739
 [<ffffffff856741e7>] genl_family_rcv_msg+0x5d7/0x1190 net/netlink/genetlink.c:634
 [<ffffffff85674f02>] genl_rcv_msg+0x162/0x260 net/netlink/genetlink.c:658
 [<ffffffff856719e2>] netlink_rcv_skb+0x242/0x350 net/netlink/af_netlink.c:2280
 [<ffffffff85673bf3>] genl_rcv+0x23/0x40 net/netlink/genetlink.c:669
 [<ffffffff8567056f>] netlink_unicast_kernel net/netlink/af_netlink.c:1214 [inline]
 [<ffffffff8567056f>] netlink_unicast+0x3df/0x570 net/netlink/af_netlink.c:1240
 [<ffffffff856711ab>] netlink_sendmsg+0x9bb/0xb40 net/netlink/af_netlink.c:1786
 [<ffffffff85436015>] sock_sendmsg_nosec net/socket.c:609 [inline]
 [<ffffffff85436015>] sock_sendmsg+0xb5/0xf0 net/socket.c:619
 [<ffffffff85437f50>] ___sys_sendmsg+0x6f0/0x860 net/socket.c:1942
 [<ffffffff8543a8d1>] __sys_sendmsg+0xc1/0x140 net/socket.c:1976
 [<ffffffff8543a95d>] SYSC_sendmsg net/socket.c:1987 [inline]
 [<ffffffff8543a95d>] SyS_sendmsg+0xd/0x20 net/socket.c:1983
 [<ffffffff86762240>] entry_SYSCALL_64_fastpath+0x23/0xc1
Code: 8d 98 c8 f8 ff ff 49 39 c4 b8 00 00 00 00 74 35 49 bd 00 00 00 00 00 fc ff df 48 8d bb 38 07 00 00 83 c0 01 48 89 fa 48 c1 ea 03 <42> 80 3c 2a 00 75 60 48 8b 93 38 07 00 00 48 8d 9a c8 f8 ff ff 
RIP  [<ffffffff863ab34d>] ieee80211_chanctx_num_assigned+0x9d/0x120 net/mac80211/chan.c:20
 RSP <ffff8801376573c8>
---[ end trace 190e01756436f3f0 ]---