bisecting fixing commit since 87335852c5d9ec629f80bb2257b9a9945962b719
building syzkaller on 3c7136c000d478908c0d17b38cf6ae8e2e2164c3
testing commit 87335852c5d9ec629f80bb2257b9a9945962b719 with gcc (GCC) 8.4.1 20210217
kernel signature: f34a6ac545a77d0bced26a88dee7dc9415dc7dee055b525584445261b3b818ae
all runs: crashed: WARNING in cfg80211_connect
testing current HEAD 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79
testing commit 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 with gcc (GCC) 8.4.1 20210217
kernel signature: fabf560b1d8f1bfe6712ba938393411ad879906b72104b0526874d2ce46e0f4d
all runs: crashed: WARNING in cfg80211_connect
revisions tested: 2, total time: 21m52.417103978s (build: 14m16.302909837s, test: 6m35.935156671s)
the crash still happens on HEAD
commit msg: Linux 4.14.222
crash: WARNING in cfg80211_connect
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9704 at net/wireless/sme.c:533 wiphy_to_rdev net/wireless/core.h:112 [inline]
WARNING: CPU: 1 PID: 9704 at net/wireless/sme.c:533 cfg80211_sme_connect net/wireless/sme.c:518 [inline]
WARNING: CPU: 1 PID: 9704 at net/wireless/sme.c:533 cfg80211_connect+0x1801/0x1fa0 net/wireless/sme.c:1141
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9704 Comm: syz-executor.0 Not tainted 4.14.222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x14b/0x1e7 lib/dump_stack.c:58
 panic+0x1b0/0x358 kernel/panic.c:183
 __warn.cold.7+0x25/0x25 kernel/panic.c:547
 report_bug+0x1a1/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bd/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:cfg80211_sme_connect net/wireless/sme.c:533 [inline]
RIP: 0010:cfg80211_connect+0x1801/0x1fa0 net/wireless/sme.c:1141
RSP: 0018:ffff888098257300 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: ffff888099abd8d0 RCX: ffff888099abd9f8
RDX: 1ffff11013357b3f RSI: ffff888098226ca6 RDI: ffffffff886a20d8
RBP: ffff8880982573f0 R08: ffffed1013357b3b R09: ffffed1013357b3a
R10: ffffed1013357b3a R11: ffff888099abd9d5 R12: ffffffff886a1fa0
R13: ffff8880982574b0 R14: 0000000000000000 R15: ffffffff86c88070
 nl80211_connect+0x1334/0x1fc0 net/wireless/nl80211.c:9113
 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:00007f75567cd188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000055bfa8 RCX: 0000000000465889
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00000000004af68d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bfa8
R13: 00007ffc083f995f R14: 00007f75567cd300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..