------------[ cut here ]------------ sysfs group 'power' not found for kobject 'syz0' WARNING: CPU: 1 PID: 8 at fs/sysfs/group.c:281 sysfs_remove_group+0x16c/0x280 fs/sysfs/group.c:279 Modules linked in: CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.10.0-rc7-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 98 3f cc ff 49 8b 17 48 c7 c7 00 3c c1 89 48 89 de 31 c0 e8 84 5a 5a ff <0f> 0b 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 62 3b 8a ff 49 8d 5e 20 RSP: 0018:ffffc90000cd7be0 EFLAGS: 00010246 RAX: 5a41eac77e2bbc00 RBX: ffffffff8a280520 RCX: ffff88801112cec0 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffffffff14500ac R08: ffffffff815d2a62 R09: ffffed10173a6068 R10: ffffed10173a6068 R11: 0000000000000000 R12: ffff88801bdd4bc8 R13: dffffc0000000000 R14: ffffffff8a280560 R15: ffff88801bd286e8 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa627d72000 CR3: 000000001a259000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: device_del+0x26a/0xb80 drivers/base/core.c:3092 __ib_unregister_device+0x88/0x170 drivers/infiniband/core/device.c:1435 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