WARNING in __cfg80211_connect

WARNING in __cfg80211_connect_result
Status: upstream: reported syz repro on 2020/07/04 06:41
Reported-by: syzbot+cc4c0f394e2611edba66@syzkaller.appspotmail.com
First crash: 294d, last: 8d22h

Cause bisection: introduced by (bisect log) :
commit e7096c131e5161fa3b8e52a650d7719d2857adfd
Author: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Sun Dec 8 23:27:34 2019 +0000

net: WireGuard secure network tunnel

Crash: WARNING in __cfg80211_connect_result (log)
Repro: syz .config

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 234 at net/wireless/sme.c:757 __cfg80211_connect_result+0xf71/0x13a0 net/wireless/sme.c:757
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 234 Comm: kworker/u4:5 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: cfg80211 cfg80211_event_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x4a kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:__cfg80211_connect_result+0xf71/0x13a0 net/wireless/sme.c:757
Code: 89 be ac 02 00 00 48 c7 c7 60 0f 18 89 c6 05 ef ba 2b 03 01 e8 f5 4a d9 f9 e9 4f f6 ff ff e8 d6 cc f2 f9 0f 0b e8 cf cc f2 f9 <0f> 0b e9 0c f2 ff ff e8 c3 cc f2 f9 e8 2e bb 71 00 31 ff 89 c3 89
RSP: 0018:ffffc900019c7bb8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88808ae13000 RCX: ffffffff87816922
RDX: ffff8880a8b0a540 RSI: ffffffff878174b1 RDI: 0000000000000005
RBP: ffff88807be34818 R08: 0000000000000001 R09: ffffffff8c5f1a3f
R10: 0000000000000000 R11: 1ffffffff1835405 R12: 0000000000000000
R13: ffff88807be34828 R14: ffff88808ae13200 R15: ffff88807be34820
 cfg80211_process_wdev_events+0x2c6/0x5b0 net/wireless/util.c:893
 cfg80211_process_rdev_events+0x6e/0x100 net/wireless/util.c:934
 cfg80211_event_work+0x1a/0x20 net/wireless/core.c:320
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..

Fix bisection attempts:
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro
ci-upstream-net-kasan-gce	2021/04/13 02:11	net-next	8ef7adc6	e1c29030	.config	log	report	syz
ci-upstream-net-kasan-gce	2021/03/13 11:04	net-next	5ab6f96a	e1c29030	.config	log	report	syz
ci-upstream-net-kasan-gce	2021/01/20 08:38	net-next	7b8fc010	e1c29030	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/12/21 06:54	net-next	3db1a3fa	e1c29030	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/11/20 02:53	net-next	657bc1d1	e1c29030	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/10/21 02:32	net-next	9ff9b0d3	e1c29030	.config	log	report	syz

Crashes (14):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	VM info
ci-upstream-net-kasan-gce	2020/08/19 15:01	net-next	e3ec1e8c	e1c29030	.config	log	report	syz
ci-upstream-net-this-kasan-gce	2020/09/21 01:46	net	f13d783a	9564d2e9	.config	log	report		info
ci-upstream-net-this-kasan-gce	2020/09/19 12:31	net	f13d783a	53ce8104	.config	log	report		info
ci-upstream-net-this-kasan-gce	2020/09/17 18:48	net	fd944dc2	8247808b	.config	log	report		info
ci-upstream-net-this-kasan-gce	2020/09/17 05:37	net	d5d325ea	8247808b	.config	log	report		info
ci-upstream-net-this-kasan-gce	2020/07/08 14:43	net	1ca0fafd	51095195	.config	log	report
ci-upstream-net-this-kasan-gce	2020/07/06 17:30	net	1ca0fafd	51095195	.config	log	report
ci-upstream-net-kasan-gce	2020/08/19 10:22	net-next	e3ec1e8c	e1c29030	.config	log	report
ci-upstream-net-kasan-gce	2020/08/19 07:29	net-next	e3ec1e8c	e1c29030	.config	log	report
ci-upstream-net-kasan-gce	2020/07/11 16:26	net-next	a594920f	18d18b59	.config	log	report
ci-upstream-net-kasan-gce	2020/07/07 23:04	net-next	e44f65fd	51095195	.config	log	report
ci-upstream-net-kasan-gce	2020/07/04 14:32	net-next	e44f65fd	51095195	.config	log	report
ci-upstream-net-kasan-gce	2020/07/03 19:47	net-next	23212a70	bed10395	.config	log	report
ci-upstream-net-kasan-gce	2020/07/01 23:36	net-next	2b04a661	39acb39d	.config	log	report