WARNING in firmware_fallback_sysfs

WARNING in firmware_fallback_sysfs

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    5695e516 Merge tag 'io_uring-worker.v3-2021-02-25' of git:..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16f34e46d00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=90173e86f0624adc
dashboard link: https://syzkaller.appspot.com/bug?extid=95f2e2439b97575ec3c0
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+95f2e2439b97575ec3c0@syzkaller.appspotmail.com

------------[ cut here ]------------
sysfs group 'power' not found for kobject 'ueagle-atm!eagleI.fw'
WARNING: CPU: 1 PID: 32 at fs/sysfs/group.c:279 sysfs_remove_group+0x94/0xa0 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.11.0-syzkaller-11646-g5695e5161974 #0
Hardware name: linux,dummy-virt (DT)
Workqueue: events request_firmware_work_func
pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--)
pc : sysfs_remove_group+0x94/0xa0 fs/sysfs/group.c:279
lr : sysfs_remove_group+0x94/0xa0 fs/sysfs/group.c:279
sp : ffff800013e83bb0
x29: ffff800013e83bb0 x28: ffff800013a9de40 
x27: f5ff00000dff3688 x26: f5ff00000dff3620 
x25: f9ff00000b7e40a0 x24: faff00000a690b00 
x23: f9ff00000b7e40a0 x22: 0000000000000000 
x21: fdff00000de85808 x20: ffff8000124a9818 
x19: 0000000000000000 x18: 00000000fffffffd 
x17: 0000000000000000 x16: 0000000000000000 
x15: 0000000000000020 x14: ffffffffffffffff 
x13: 0000000000000e0b x12: ffff800013e83860 
x11: ffff800013a0b548 x10: 00000000ffffe000 
x9 : ffff800013a0b548 x8 : ffff80001395b548 
x7 : ffff800013a0b548 x6 : 0000000000000000 
x5 : ffff00007fbd7948 x4 : 0000000000015ff5 
x3 : 0000000000000001 x2 : 0000000000000000 
x1 : 0000000000000000 x0 : f5ff00000412eac0 
Call trace:
 sysfs_remove_group+0x94/0xa0 fs/sysfs/group.c:279
 dpm_sysfs_remove+0x60/0x70 drivers/base/power/sysfs.c:837
 device_del+0xa4/0x384 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+0x35c/0x460 drivers/base/firmware_loader/fallback.c:657
 _request_firmware+0x4c8/0x6d0 drivers/base/firmware_loader/main.c:831
 request_firmware_work_func+0x40/0xa0 drivers/base/firmware_loader/main.c:1077
 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275
 worker_thread+0x70/0x434 kernel/workqueue.c:2421
 kthread+0x174/0x180 kernel/kthread.c:292
 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:958


---
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Re: [syzbot] WARNING in firmware_fallback_sysfs

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    20f1b5f9 Add linux-next specific files for 20210324
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1506414ed00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=31aa577aa2dca78c
dashboard link: https://syzkaller.appspot.com/bug?extid=95f2e2439b97575ec3c0
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14e50426d00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1388dfe6d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+95f2e2439b97575ec3c0@syzkaller.appspotmail.com

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

Re: [syzbot] syz-test

[syzbot]

For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org.

***

Subject: syz-test
Author: jose.pekkarinen@foxhound.fi


#syz test: 
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
5a6a09e97199d6600d31383055f9d43fbbcbe86f

     José Pekkarinen.