WARNING in firmware_fallback

WARNING in firmware_fallback_sysfs
Status: upstream: reported C repro on 2021/03/04 08:20
Reported-by: syzbot+95f2e2439b97575ec3c0@syzkaller.appspotmail.com
First crash: 272d, last: 2d12h

Cause bisection: failed (bisect log)

Sample crash report:

WARNING: CPU: 1 PID: 1057 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 1057 Comm: kworker/1:2 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events request_firmware_work_func
RIP: 0010:sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 a0 4e 9d 89 e8 65 e1 fd 06 <0f> 0b eb 98 e8 21 72 c8 ff e9 01 ff ff ff 48 89 df e8 14 72 c8 ff
RSP: 0018:ffffc9000301faa0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff89fd0560 RCX: 0000000000000000
RDX: ffff88801bef9c80 RSI: ffffffff815e9d98 RDI: fffff52000603f46
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e3b3e R11: 0000000000000000 R12: ffff88801b4d7008
R13: ffffffff89fd0b00 R14: ffff88801b4d7008 R15: ffff888015de9e00
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7942fbb740 CR3: 000000001cb34000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:837
 device_del+0x20c/0xd60 drivers/base/core.c:3560
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:545 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:583 [inline]
 firmware_fallback_sysfs+0x9f8/0xe70 drivers/base/firmware_loader/fallback.c:659
 _request_firmware+0xbb5/0x1040 drivers/base/firmware_loader/main.c:833
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1079
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Crashes (196):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce	2021/10/26 11:29	upstream	c2b43854aad9	c1132b49	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/10/23 08:19	upstream	64222515138e	282f03fb	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/09/30 14:19	upstream	02d5e016800d	be530f6c	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/06/29 22:06	upstream	c54b245d0118	a4fccb01	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/06/12 09:19	upstream	f21b807c3cf8	1ba81399	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/10/16 00:20	linux-next	7c832d2f9b95	0c5d9412	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/09/30 13:23	linux-next	c7b4d0e56a1d	be530f6c	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/03/25 04:03	linux-next	20f1b5f9c07c	607e3baf	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/25 11:13	upstream	5f53fa508db0	545ab074	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/24 12:22	upstream	5d9f4cf36721	545ab074	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/23 18:52	upstream	136057256686	545ab074	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-qemu-upstream	2021/11/16 13:47	upstream	8ab774587903	600426bd	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/15 17:09	upstream	8ab774587903	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/15 11:25	upstream	fa55b7dcdc43	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/15 02:12	upstream	c8c109546a19	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/14 17:14	upstream	c8c109546a19	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/14 00:59	upstream	a9b9669d9822	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/13 05:24	upstream	7246f4dcaccc	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-qemu-upstream	2021/11/12 10:24	upstream	5833291ab6de	75b04091	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/11 06:08	upstream	89d714ab6043	75b04091	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/09 16:17	upstream	d2f38a3c6507	59bcaf9a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/09 11:48	upstream	e851dfae4371	8ab17e57	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/09 10:12	upstream	e851dfae4371	8ab17e57	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/09 02:16	upstream	e851dfae4371	8ab17e57	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/08 23:03	upstream	e851dfae4371	d29682f1	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/08 15:22	upstream	6b75d88fa81b	d29682f1	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/08 06:55	upstream	6b75d88fa81b	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/07 00:32	upstream	512b7931ad05	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/06 20:46	upstream	d4439a1189f9	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/06 13:25	upstream	d4439a1189f9	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/06 00:43	upstream	fe91c4725aee	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/05 17:01	upstream	d4439a1189f9	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/05 01:29	upstream	7ddb58cb0eca	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/04 10:30	upstream	ce840177930f	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/04 08:26	upstream	ce840177930f	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/11/03 23:21	upstream	dcd68326d29b	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/03 07:05	upstream	bfc484fe6abb	17f3edd2	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/11/02 21:52	upstream	bfc484fe6abb	17f3edd2	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/11/01 08:49	upstream	8bb7eca972ad	098b5d53	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/10/29 15:08	upstream	411a44c24a56	2353a3ec	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/10/29 00:33	upstream	411a44c24a56	be531bb4	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/20 07:24	upstream	4c388a8e740d	3a9d0024	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/11 17:16	upstream	debe436e77c7	75b04091	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/10 10:13	upstream	cb690f5238d7	55fa030c	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/07 20:03	upstream	b5013d084e03	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/07 17:09	upstream	b5013d084e03	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/07 10:22	upstream	512b7931ad05	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/06 07:05	upstream	fe91c4725aee	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/06 05:17	upstream	fe91c4725aee	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-386	2021/11/03 06:05	upstream	bfc484fe6abb	17f3edd2	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-qemu-upstream-386	2021/10/23 09:52	upstream	5ab2ed0a8d75	282f03fb	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-qemu2-arm64-mte	2021/02/28 08:13	upstream	5695e5161974	4c37c133	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/18 01:01	linux-next	fd96a4057bd0	cafff8b6	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/13 13:28	linux-next	f2e19fd15bd7	83f5c9b5	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/11 16:14	linux-next	ad8be4fa6e81	75b04091	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/10 19:00	linux-next	73e5c18006f5	75b04091	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/10 12:03	linux-next	c8109c2ba35e	55fa030c	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/10 04:50	linux-next	c8109c2ba35e	55fa030c	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/08 00:29	linux-next	6a37ebbe07bf	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/07 05:40	linux-next	6a37ebbe07bf	4c1be0be	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/03 02:54	linux-next	9150de4aac1e	17f3edd2	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/11/01 04:25	linux-next	bdcc9f6a5682	098b5d53	.config	log	report			info	WARNING in firmware_fallback_sysfs