IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes 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: 0 PID: 8015 Comm: syz-executor951 Not tainted 4.14.203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b418e180 task.stack: ffff8880aa9c8000
RIP: 0010:ieee80211_chanctx_num_assigned+0xa5/0x120 net/mac80211/chan.c:20
RSP: 0018:ffff8880aa9cf4a8 EFLAGS: 00010a02
RAX: 1bd5a00000000020 RBX: deacfffffffff920 RCX: 1ffffffff1279f10
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: dead000000000100
RBP: ffff8880a50bbe20 R08: 0000000000000000 R09: 0000000000040583
R10: ffff8880b418ead0 R11: ffff8880b418e180 R12: 0000000000000002
R13: dffffc0000000000 R14: ffff8880a50bbe00 R15: 0000000000000000
FS:  0000000000897940(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f39bb75c000 CR3: 0000000098fb6000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee80211_assign_vif_chanctx+0x65e/0x1370 net/mac80211/chan.c:676
 __ieee80211_vif_release_channel+0x1ef/0x3f0 net/mac80211/chan.c:1543
 ieee80211_vif_release_channel+0xef/0x1f0 net/mac80211/chan.c:1757
 ieee80211_ibss_disconnect+0x527/0xd40 net/mac80211/ibss.c:744
 ieee80211_ibss_leave+0x12/0xd8 net/mac80211/ibss.c:1858
 rdev_leave_ibss net/wireless/rdev-ops.h:531 [inline]
 __cfg80211_leave_ibss+0x14c/0x6d0 net/wireless/ibss.c:217
 cfg80211_leave_ibss+0x54/0x70 net/wireless/ibss.c:234
 cfg80211_change_iface+0x791/0x13d0 net/wireless/util.c:1028
 nl80211_set_interface+0x588/0x760 net/wireless/nl80211.c:2929
 genl_family_rcv_msg+0x572/0xb20 net/netlink/genetlink.c:600
 genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4429b9
RSP: 002b:00007ffee01d70e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004429b9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00000000000071b8 R08: 00000000004035b0 R09: 00000000004035b0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403520
R13: 00000000004035b0 R14: 0000000000000000 R15: 0000000000000000
Code: 98 20 f8 ff ff 48 39 c5 74 3b 49 bd 00 00 00 00 00 fc ff df e8 fd dd 7b fa 48 8d bb e0 07 00 00 41 83 c4 01 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 5d 48 8b 83 e0 07 00 00 48 8d 98 20 f8 ff ff 
RIP: ieee80211_chanctx_num_assigned+0xa5/0x120 net/mac80211/chan.c:20 RSP: ffff8880aa9cf4a8
---[ end trace 2ea871d509a6443f ]---