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: 54d, last: 1h41m

Cause bisection: failed (bisect log)

Sample crash report:

sysfs group 'power' not found for kobject 'ueagle-atm!eagleI.fw'
WARNING: CPU: 1 PID: 36 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 36 Comm: kworker/1:1 Not tainted 5.12.0-rc4-next-20210324-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 e0 7d 7c 89 e8 9d cc d9 06 <0f> 0b eb 98 e8 f1 23 c9 ff e9 01 ff ff ff 48 89 df e8 e4 23 c9 ff
RSP: 0018:ffffc90000e6faa0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff89da8900 RCX: 0000000000000000
RDX: ffff888011e01c80 RSI: ffffffff815c3fd5 RDI: fffff520001cdf46
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bd77e R11: 0000000000000000 R12: ffff8880276ac008
R13: ffffffff89da8ea0 R14: ffff8880133e6878 R15: ffff8880133e68c0
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c3971a0c8 CR3: 000000001cf2a000 CR4: 00000000001506e0
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/0xd40 drivers/base/core.c:3398
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:543 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:581 [inline]
 firmware_fallback_sysfs+0x9ff/0xe20 drivers/base/firmware_loader/fallback.c:657
 _request_firmware+0xa80/0xe80 drivers/base/firmware_loader/main.c:833
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1079
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Crashes (19):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-linux-next-kasan-gce-root	2021/03/25 04:03	linux-next	20f1b5f9	607e3baf	.config	log	report	syz	C		WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/04/23 16:01	upstream	18a3c5f7	17f0b706	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/22 06:35	upstream	16fc44d6	2bc8999a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/04/16 22:10	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/04/16 20:03	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-root	2021/04/16 19:48	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/16 19:48	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/16 19:40	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/16 19:17	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/16 19:08	upstream	2f7b98d1	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/09 16:03	upstream	4fa56ad0	6a81331a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/06 12:30	upstream	0a50438c	6a81331a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/04/06 00:10	upstream	0a50438c	6a81331a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce-selinux-root	2021/04/03 20:47	upstream	57fbdb15	6a81331a	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-kasan-gce	2021/03/24 03:21	upstream	7acac4b3	e613994b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-qemu2-arm64-mte	2021/02/28 08:13	upstream	5695e516	4c37c133	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/04/16 19:32	linux-next	1216f02e	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/04/16 19:23	linux-next	1216f02e	7e2b734b	.config	log	report			info	WARNING in firmware_fallback_sysfs
ci-upstream-linux-next-kasan-gce-root	2021/03/25 03:15	linux-next	20f1b5f9	607e3baf	.config	log	report			info	WARNING in firmware_fallback_sysfs