BUG: memory leak
unreferenced object (percpu) 0x607f1a8d9238 (size 8):
  comm "syz-executor.0", pid 8533, jiffies 4295671002
  hex dump (first 8 bytes on cpu 1):
    00 00 00 00 00 00 00 00                          ........
  backtrace (crc 0):
    pcpu_alloc_noprof+0x8c6/0x1160
    __alloc_workqueue+0x7d6/0x1820
    alloc_workqueue_noprof+0xc7/0x200
    loop_configure+0xf68/0x15a0
    lo_ioctl+0x66d/0x1ca0
    blkdev_ioctl+0x365/0x6d0
    __x64_sys_ioctl+0x18f/0x210
    do_syscall_64+0xbf/0x420
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed