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 CPU: 0 PID: 8105 Comm: syz-executor918 Not tainted 4.19.155-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_chanctx_num_assigned+0xb1/0x130 net/mac80211/chan.c:20 Code: 08 f8 ff ff 48 39 c5 74 3b 49 bd 00 00 00 00 00 fc ff df e8 d1 d4 9f f9 48 8d bb f8 07 00 00 41 83 c4 01 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 61 48 8b 83 f8 07 00 00 48 8d 98 08 f8 ff ff 48 RSP: 0018:ffff888098ecf3e8 EFLAGS: 00010a02 RAX: 1bd5a00000000020 RBX: deacfffffffff908 RCX: ffffffff87c4fa1b RDX: 0000000000000000 RSI: ffffffff87c4f9bf RDI: dead000000000100 RBP: ffff8880a8890a20 R08: ffff8880ab4c58c0 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000002 R13: dffffc0000000000 R14: ffff8880a8890a00 R15: 0000000000000000 FS: 00007fa2b68ab700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f87a1c930 CR3: 00000000a8d21000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_assign_vif_chanctx+0x73c/0x1590 net/mac80211/chan.c:676 __ieee80211_vif_release_channel+0x22f/0x420 net/mac80211/chan.c:1543 ieee80211_vif_release_channel+0x10a/0x1e0 net/mac80211/chan.c:1757 ieee80211_ibss_disconnect+0x5a0/0xe40 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+0x191/0x7c0 net/wireless/ibss.c:206 cfg80211_leave_ibss+0x54/0x70 net/wireless/ibss.c:224 cfg80211_change_iface+0x925/0x1530 net/wireless/util.c:916 nl80211_set_interface+0x661/0x830 net/wireless/nl80211.c:3205 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x447629 Code: e8 ec e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 9b 04 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa2b68aad98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006dcc68 RCX: 0000000000447629 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00000000006dcc60 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dcc6c R13: 0000000000000000 R14: 000000306e616c77 R15: 0000000000000300 Modules linked in: ---[ end trace d4194c31ef7ae72b ]--- RIP: 0010:ieee80211_chanctx_num_assigned+0xb1/0x130 net/mac80211/chan.c:20 Code: 08 f8 ff ff 48 39 c5 74 3b 49 bd 00 00 00 00 00 fc ff df e8 d1 d4 9f f9 48 8d bb f8 07 00 00 41 83 c4 01 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 61 48 8b 83 f8 07 00 00 48 8d 98 08 f8 ff ff 48 RSP: 0018:ffff888098ecf3e8 EFLAGS: 00010a02 RAX: 1bd5a00000000020 RBX: deacfffffffff908 RCX: ffffffff87c4fa1b RDX: 0000000000000000 RSI: ffffffff87c4f9bf RDI: dead000000000100 RBP: ffff8880a8890a20 R08: ffff8880ab4c58c0 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000002 R13: dffffc0000000000 R14: ffff8880a8890a00 R15: 0000000000000000 FS: 00007fa2b68ab700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa2b6868e78 CR3: 00000000a8d21000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400