smc: removing ib device syz0 ------------[ cut here ]------------ sysfs group 'power' not found for kobject 'srp-syz0-1' WARNING: CPU: 1 PID: 66 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 fs/sysfs/group.c:279 Modules linked in: CPU: 1 PID: 66 Comm: kworker/u4:2 Not tainted 5.9.0-rc3-next-20200903-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 80 df 5a 88 e8 a5 a3 5a ff <0f> 0b eb 98 e8 51 a5 ca ff e9 01 ff ff ff 48 89 df e8 44 a5 ca ff RSP: 0018:ffffc90001007ab0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff88b52760 RCX: 0000000000000000 RDX: ffff8880a9360580 RSI: ffffffff815dbe97 RDI: fffff52000200f48 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880ae7318e7 R10: 0000000000000000 R11: 7267207366737973 R12: ffff8880a8056010 R13: ffffffff88b52d00 R14: ffff88808f7682d0 R15: ffffffff8a72d4c0 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3d71dec010 CR3: 00000000a7089000 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:801 device_del+0x18b/0xd90 drivers/base/core.c:3086 device_unregister+0x11/0x30 drivers/base/core.c:3141 srp_remove_one+0xa0/0x2c0 drivers/infiniband/ulp/srp/ib_srp.c:4053 remove_client_context+0xbe/0x110 drivers/infiniband/core/device.c:731 disable_device+0x13b/0x270 drivers/infiniband/core/device.c:1281 __ib_unregister_device+0x91/0x1a0 drivers/infiniband/core/device.c:1453 ib_unregister_work+0x15/0x30 drivers/infiniband/core/device.c:1565 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294