smc: removing ib device syz2
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sysfs group 'power' not found for kobject 'uverbs0'
WARNING: CPU: 1 PID: 9992 at fs/sysfs/group.c:281 sysfs_remove_group+0x16c/0x280 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 9992 Comm: kworker/u4:6 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound ib_unregister_work
RIP: 0010:sysfs_remove_group+0x16c/0x280 fs/sysfs/group.c:279
Code: 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 a8 3e cc ff 49 8b 17 48 c7 c7 00 3c c1 89 48 89 de 31 c0 e8 d4 5c 5a ff <0f> 0b 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 02 3e 8a ff 49 8d 5e 20
RSP: 0018:ffffc90016667ae8 EFLAGS: 00010246
RAX: 9d2a213b5c9a0300 RBX: ffffffff8a280500 RCX: ffff888073810000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffffffff14500a8 R08: ffffffff815d29e2 R09: ffffed10173a6068
R10: ffffed10173a6068 R11: 0000000000000000 R12: ffff888019e6fae0
R13: dffffc0000000000 R14: ffffffff8a280540 R15: ffff888071574060
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f976d6ec000 CR3: 0000000021739000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 device_del+0x26a/0xb80 drivers/base/core.c:3092
 cdev_device_del+0x22/0xe0 fs/char_dev.c:573
 ib_uverbs_remove_one+0x36/0x3d0 drivers/infiniband/core/uverbs_main.c:1213
 remove_client_context+0xb3/0x1e0 drivers/infiniband/core/device.c:735
 disable_device+0xec/0x2e0 drivers/infiniband/core/device.c:1249
 __ib_unregister_device+0x6c/0x170 drivers/infiniband/core/device.c:1429
 ib_unregister_work+0x15/0x30 drivers/infiniband/core/device.c:1540
 process_one_work+0x789/0xfc0 kernel/workqueue.c:2272
 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2418
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296