IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
device veth0_vlan entered promiscuous mode
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: 9047 Comm: syz-executor.0 Not tainted 4.14.226-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8881d25de080 task.stack: ffff8881dc880000
RIP: 0010:ieee80211_chanctx_num_assigned+0x9d/0x110 net/mac80211/chan.c:20
RSP: 0018:ffff8881dc887318 EFLAGS: 00010a02
RAX: 0000000000000002 RBX: deacfffffffff920 RCX: ffffed103a4bbd20
RDX: 1bd5a00000000020 RSI: 0000000000000000 RDI: dead000000000100
RBP: ffff8881dc887338 R08: 1ffff1103a4bbd20 R09: ffffffff8aa8eab8
R10: ffff8881dc8873d8 R11: ffff8881d25de080 R12: ffff8881e5698320
R13: dffffc0000000000 R14: ffff8881e5698300 R15: 0000000000000000
FS:  00007fe88b5fc700(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe88b5ba718 CR3: 00000001dac90002 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee80211_assign_vif_chanctx+0x58e/0x1150 net/mac80211/chan.c:676
 __ieee80211_vif_release_channel+0x1b1/0x350 net/mac80211/chan.c:1543
 ieee80211_vif_release_channel+0xe3/0x1c0 net/mac80211/chan.c:1757
 ieee80211_ibss_disconnect+0x4f9/0xc90 net/mac80211/ibss.c:744
 ieee80211_ibss_leave+0xf/0xe0 net/mac80211/ibss.c:1858
 ieee80211_leave_ibss+0x10/0x20 net/mac80211/cfg.c:2252
 rdev_leave_ibss net/wireless/rdev-ops.h:531 [inline]
 __cfg80211_leave_ibss+0x132/0x5e0 net/wireless/ibss.c:217
 cfg80211_leave_ibss+0x57/0x80 net/wireless/ibss.c:234
 cfg80211_change_iface+0x8bb/0x1160 net/wireless/util.c:1028
 nl80211_set_interface+0x443/0x840 net/wireless/nl80211.c:2929
 genl_family_rcv_msg+0x57f/0xfe0 net/netlink/genetlink.c:600
 genl_rcv_msg+0xa7/0x140 net/netlink/genetlink.c:625
 netlink_rcv_skb+0x12f/0x3b0 net/netlink/af_netlink.c:2433
 genl_rcv+0x23/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x40b/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x639/0xbe0 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xac/0xf0 net/socket.c:656
 ___sys_sendmsg+0x625/0x920 net/socket.c:2062
 __sys_sendmsg+0xc1/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0xd/0x20 net/socket.c:2103
 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465889
RSP: 002b:00007fe88b5fc188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000055bf00 RCX: 0000000000465889
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00000000004af68d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bf00
R13: 00007ffc3ddd073f R14: 00007fe88b5fc300 R15: 0000000000022000
Code: 8d 98 20 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 e0 07 00 00 83 c0 01 48 89 fa 48 c1 ea 03 <42> 80 3c 2a 00 75 49 48 8b 93 e0 07 00 00 48 8d 9a 20 f8 ff ff 
RIP: ieee80211_chanctx_num_assigned+0x9d/0x110 net/mac80211/chan.c:20 RSP: ffff8881dc887318
---[ end trace 96b5ff58198d381b ]---