smc: removing ib device sy
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sysfs group 'power' not found for kobject 'issm0'
WARNING: CPU: 1 PID: 9912 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279
Modules linked in:
CPU: 1 PID: 9912 Comm: kworker/u4:6 Not tainted 5.10.0-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+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 ad 5b 89 e8 03 b5 c9 06 <0f> 0b eb 98 e8 01 f3 c9 ff e9 01 ff ff ff 48 89 df e8 f4 f2 c9 ff
RSP: 0018:ffffc90016e97a40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff89b5b860 RCX: 0000000000000000
RDX: ffff888029e1b580 RSI: ffffffff81594d05 RDI: fffff52002dd2f3a
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880b9f308a7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801c26e5d0
R13: ffffffff89b5be00 R14: ffff88805c494000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0009c9000 CR3: 00000000121b0000 CR4: 0000000000350ee0
Call Trace:
 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:837
 device_del+0x20c/0xec0 drivers/base/core.c:3092
 cdev_device_del+0x19/0x100 fs/char_dev.c:573
 ib_umad_kill_port+0x33/0x2b0 drivers/infiniband/core/user_mad.c:1326
 ib_umad_remove_one+0x179/0x280 drivers/infiniband/core/user_mad.c:1411
 remove_client_context+0xbe/0x110 drivers/infiniband/core/device.c:735
 disable_device+0x13b/0x270 drivers/infiniband/core/device.c:1249
 __ib_unregister_device+0x91/0x1a0 drivers/infiniband/core/device.c:1429
 ib_unregister_work+0x15/0x30 drivers/infiniband/core/device.c:1540
 process_one_work+0x933/0x15a0 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:296