WARNING in ieee80211_ibss_csa

WARNING in ieee80211_ibss_csa_beacon
Status: upstream: reported C repro on 2020/10/08 07:40
Reported-by: syzbot+b6c9fe29aefe68e4ad34@syzkaller.appspotmail.com
First crash: 189d, last: 18h24m

Cause bisection: failed (bisect log)

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING in ieee80211_ibss_csa_beacon	syz			21	20h47m	144d	0/1	upstream: reported syz repro on 2020/11/22 05:50
linux-4.14	WARNING in ieee80211_ibss_csa_beacon	C			1	22d	157d	0/1	upstream: reported C repro on 2020/11/08 18:28

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 215 at net/mac80211/ibss.c:504 ieee80211_ibss_csa_beacon+0x4e9/0x5a0 net/mac80211/ibss.c:504
Modules linked in:
CPU: 1 PID: 215 Comm: kworker/u4:4 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy7 ieee80211_csa_finalize_work
RIP: 0010:ieee80211_ibss_csa_beacon+0x4e9/0x5a0 net/mac80211/ibss.c:504
Code: e8 6c 7b 8b f8 b8 f4 ff ff ff eb 0a e8 60 7b 8b f8 b8 00 01 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 7b 8b f8 <0f> 0b b8 ea ff ff ff eb e3 e8 39 7b 8b f8 0f 0b e9 88 fb ff ff 48
RSP: 0018:ffffc900010ffbf0 EFLAGS: 00010293
RAX: ffffffff88ed9309 RBX: ffff88802e7f3450 RCX: ffff888012220000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88803506d8ba R08: dffffc0000000000 R09: fffffbfff1f296cc
R10: fffffbfff1f296cc R11: 0000000000000000 R12: ffff88803506d8c0
R13: ffff88802e7f0580 R14: ffff88803506cc00 R15: ffff88803506d8e0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f206f039718 CR3: 000000000c48e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee80211_set_after_csa_beacon net/mac80211/cfg.c:3122 [inline]
 __ieee80211_csa_finalize net/mac80211/cfg.c:3178 [inline]
 ieee80211_csa_finalize+0x46f/0x960 net/mac80211/cfg.c:3201
 ieee80211_csa_finalize_work+0xfb/0x140 net/mac80211/cfg.c:3226
 process_one_work+0x789/0xfd0 kernel/workqueue.c:2275
 worker_thread+0xac1/0x1300 kernel/workqueue.c:2421
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Crashes (195):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-smack-root	2021/03/24 19:30	upstream	7acac4b3	607e3baf	.config	log	report	syz	C		WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2020/12/05 02:27	upstream	e87297fa	20366b87	.config	log	report	syz	C
ci-upstream-kasan-gce	2021/04/13 20:17	upstream	89698bec	a184b83e	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/04/13 19:04	upstream	89698bec	a184b83e	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/04/12 15:42	upstream	d434405a	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-smack-root	2021/04/10 09:00	upstream	d4961772	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/04/08 12:20	upstream	454859c5	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-selinux-root	2021/04/07 23:12	upstream	3a229812	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/04/04 21:07	upstream	2023a53b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/04/03 19:19	upstream	57fbdb15	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/29 13:59	upstream	a5e13c6d	a8529b82	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/28 01:33	upstream	0f4498ce	a8529b82	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-selinux-root	2021/03/24 14:42	upstream	7acac4b3	607e3baf	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-selinux-root	2021/03/22 23:39	upstream	84196390	8092f30d	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/22 18:16	upstream	0d02ec6b	8092f30d	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-qemu-upstream	2021/03/21 17:51	upstream	812da4d3	4c9a64da	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/20 13:52	upstream	1c273e10	17810eae	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/08 02:56	upstream	144c79ef	09fbf400	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-root	2021/03/05 13:55	upstream	280d542f	9d751681	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-smack-root	2021/03/05 12:32	upstream	280d542f	9d751681	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/04 23:20	upstream	cee407c5	9d751681	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/03 17:27	upstream	f69d02e3	06ed56cd	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/02 12:54	upstream	7a7fd0de	92ead296	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-selinux-root	2021/03/01 19:58	upstream	fe07bfda	183afb6c	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/03/01 15:10	upstream	fe07bfda	4c37c133	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-smack-root	2021/03/01 02:17	upstream	cd278456	4c37c133	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce	2021/02/26 16:04	upstream	2c87f7a3	4c37c133	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/14 13:19	upstream	50987bec	3134b37f	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/13 23:05	upstream	eebe426d	a184b83e	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/13 07:29	upstream	89698bec	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/12 00:33	upstream	7d900724	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/11 03:03	upstream	52e44129	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/10 10:02	upstream	d4961772	bfeda1b1	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/04 23:04	upstream	e49d033b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/04 09:10	upstream	2023a53b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/02 13:11	upstream	1678e493	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/04/01 22:24	upstream	ffd9fb54	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/03/29 15:01	upstream	a5e13c6d	a8529b82	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/03/26 08:20	upstream	db24726b	6a383ecf	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-386	2021/03/04 07:29	upstream	f69d02e3	d7e4e604	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-qemu-upstream-386	2021/03/01 12:59	upstream	fe07bfda	4c37c133	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-qemu-upstream-386	2021/02/24 04:42	upstream	c03c21ba	fcc6d71b	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/04/09 06:50	net	864db232	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/04/05 04:21	net	a14d273b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/04/03 15:54	net	a14d273b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/04/02 21:35	net	9256ce33	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/03/16 01:38	net	a25f8222	fdb2bb2c	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-this-kasan-gce	2021/03/09 08:53	net	29d98f54	09fbf400	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-kasan-gce	2021/04/07 17:54	net-next	be107538	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-kasan-gce	2021/04/02 07:43	net-next	bd78980b	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-kasan-gce	2021/03/19 06:55	net-next	31222162	380dcc3e	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-net-kasan-gce	2021/02/27 16:17	net-next	d310ec03	4c37c133	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-linux-next-kasan-gce-root	2021/04/10 00:16	linux-next	e99d8a84	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-linux-next-kasan-gce-root	2021/04/09 17:48	linux-next	e99d8a84	6a81331a	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-linux-next-kasan-gce-root	2021/03/27 08:37	linux-next	93129492	a8529b82	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-linux-next-kasan-gce-root	2021/02/25 15:29	linux-next	7f206cf3	76f7fc95	.config	log	report			info	WARNING in ieee80211_ibss_csa_beacon
ci-upstream-kasan-gce-smack-root	2020/10/07 17:35	upstream	c85fb28b	1880b4a9	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/17 02:55	upstream	0da0a8a0	65a7a854	.config	log	report			info