smc: removing ib device syz0 ------------[ cut here ]------------ sysfs group 'power' not found for kobject 'uverbs0' WARNING: CPU: 0 PID: 154 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279 Modules linked in: CPU: 0 PID: 154 Comm: kworker/u4:4 Not tainted 5.10.0-rc4-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 20 77 5b 89 e8 44 f2 c5 06 <0f> 0b eb 98 e8 71 36 ca ff e9 01 ff ff ff 48 89 df e8 64 36 ca ff RSP: 0018:ffffc90001547a98 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff89b52180 RCX: 0000000000000000 RDX: ffff8880118ee500 RSI: ffffffff8158f3e5 RDI: fffff520002a8f45 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880b9e30627 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880700be060 R13: ffffffff89b52720 R14: ffff88807497c5b8 R15: ffffffff8c69b420 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf308a4000 CR3: 000000002a0ec000 CR4: 00000000001506f0 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/0xec0 drivers/base/core.c:3092 cdev_device_del+0x19/0x100 fs/char_dev.c:573 ib_uverbs_remove_one+0x33/0x4f0 drivers/infiniband/core/uverbs_main.c:1213 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:2272 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418 kthread+0x3af/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296