[v6.1] WARNING in firmware_fallback_sysfs

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e3a87a10f259 Linux 6.1.21
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11873edec80000
kernel config: https://syzkaller.appspot.com/x/.config?x=390800ef8aeebc47
dashboard link: https://syzkaller.appspot.com/bug?extid=457452d30bcdda75ead2
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10b783e5c80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=169fd4d5c80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9f5022ccd560/disk-e3a87a10.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f8524664c631/vmlinux-e3a87a10.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ad699b30c2c4/Image-e3a87a10.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+457452...@syzkaller.appspotmail.com

------------[ cut here ]------------
sysfs group 'power' not found for kobject 'ueagle-atm!eagleII.fw'
WARNING: CPU: 0 PID: 110 at fs/sysfs/group.c:280 sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:278
Modules linked in:
CPU: 0 PID: 110 Comm: kworker/0:2 Not tainted 6.1.21-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events request_firmware_work_func
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:278
lr : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:278
sp : ffff80001d7076a0
x29: ffff80001d7076a0 x28: 1fffe00018d29005 x27: dfff800000000000
x26: ffff80001d707760 x25: 1fffe0001b4b400a x24: 1ffff0000261f9f0
x23: dfff800000000000 x22: ffff0000da5a0068 x21: ffff0000da5a0008
x20: ffff0000c2009828 x19: ffff8000130fcf60 x18: ffff80001d707220
x17: 77662e4949656c67 x16: ffff8000120d4cb4 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001
x11: ff808000081aec18 x10: 0000000000000000 x9 : a9ce356043b49900
x8 : a9ce356043b49900 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001d706f98 x4 : ffff800015662680 x3 : ffff8000085810b0
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:278
dpm_sysfs_remove+0xa4/0xd4 drivers/base/power/sysfs.c:837
device_del+0x268/0x9b4 drivers/base/core.c:3829
fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:120 [inline]
fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:158 [inline]
firmware_fallback_sysfs+0x5c4/0x8b8 drivers/base/firmware_loader/fallback.c:234
_request_firmware+0xccc/0xf4c drivers/base/firmware_loader/main.c:856
request_firmware_work_func+0xfc/0x214 drivers/base/firmware_loader/main.c:1105
process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289
worker_thread+0x8e4/0xfec kernel/workqueue.c:2436
kthread+0x24c/0x2d4 kernel/kthread.c:376
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
irq event stamp: 48734
hardirqs last enabled at (48733): [<ffff800008340aac>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (48734): [<ffff8000120d096c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (48404): [<ffff800010aed254>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (48402): [<ffff800010aed220>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
usb 1-1: [UEAGLE-ATM] firmware is not available
usb 1-1: Direct firmware load for ueagle-atm/eagleII.fw failed with error -2
usb 1-1: Falling back to sysfs fallback for: ueagle-atm/eagleII.fw


---
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[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 115472395b0a Linux 5.15.104
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10c92e1ec80000
kernel config: https://syzkaller.appspot.com/x/.config?x=e597b110d58e7b4
dashboard link: https://syzkaller.appspot.com/bug?extid=a60f44acd31bc8cb5b97

compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1335a0c1c80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1439eb89c80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/76798ca1c9b6/disk-11547239.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3b608633c8f5/vmlinux-11547239.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8836fafb618b/Image-11547239.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+a60f44...@syzkaller.appspotmail.com

------------[ cut here ]------------
sysfs group 'power' not found for kobject 'ueagle-atm!eagleII.fw'

WARNING: CPU: 0 PID: 7 at fs/sysfs/group.c:281 sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
Modules linked in:
CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 5.15.104-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events request_firmware_work_func
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
lr : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
sp : ffff8000188a77e0
x29: ffff8000188a77e0 x28: 1fffe0001811f6b4 x27: dfff800000000000
x26: ffff8000188a78a0 x25: 1fffe00019d2aa0a x24: 1ffff000024ea3bc
x23: dfff800000000000 x22: ffff0000ce955068 x21: ffff0000ce955008
x20: ffff0000c1e55cb0 x19: ffff800012751dc0 x18: 0000000000000001
x17: ff808000083335b8 x16: ffff80001193d804 x15: ffff8000083335b8
x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000000
x11: ff8080000832b060 x10: 0000000000000000 x9 : a96e07b892bc7500
x8 : a96e07b892bc7500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000188a6f58 x4 : ffff80001499f940 x3 : ffff800008549a30
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000041
Call trace:
sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279
dpm_sysfs_remove+0xa4/0xd4 drivers/base/power/sysfs.c:837
device_del+0x268/0x9b4 drivers/base/core.c:3559
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+0x7ec/0xae8 drivers/base/firmware_loader/fallback.c:659
_request_firmware+0x830/0xee4 drivers/base/firmware_loader/main.c:848
request_firmware_work_func+0xfc/0x214 drivers/base/firmware_loader/main.c:1097
process_one_work+0x790/0x11b8 kernel/workqueue.c:2306
worker_thread+0x910/0x1034 kernel/workqueue.c:2453
kthread+0x37c/0x45c kernel/kthread.c:319
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 1512
hardirqs last enabled at (1511): [<ffff8000083291f8>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (1512): [<ffff800011938e98>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387
softirqs last enabled at (1284): [<ffff800008020ccc>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last enabled at (1284): [<ffff800008020ccc>] __do_softirq+0xb5c/0xe20 kernel/softirq.c:587
softirqs last disabled at (1275): [<ffff8000081b4ee0>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (1275): [<ffff8000081b4ee0>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (1275): [<ffff8000081b4ee0>] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:636
---[ end trace cabbe75f3bb6868f ]---