usb 4-1: Direct firmware load for isl3887usb failed with error -2
usb 4-1: Firmware not found.
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BUG: KASAN: use-after-free in p54u_load_firmware_cb.cold+0x97/0x13a drivers/net/wireless/intersil/p54/p54usb.c:936
Read of size 8 at addr ffff888098bf3588 by task kworker/0:1/12

CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc3-319004-g43151d6 #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events request_firmware_work_func
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xe8/0x16e lib/dump_stack.c:113
 print_address_description+0x6c/0x236 mm/kasan/report.c:187
 kasan_report.cold+0x1a/0x3c mm/kasan/report.c:317
 p54u_load_firmware_cb.cold+0x97/0x13a drivers/net/wireless/intersil/p54/p54usb.c:936
 request_firmware_work_func+0x12d/0x249 drivers/base/firmware_loader/main.c:785
 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
 worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
 kthread+0x313/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

The buggy address belongs to the page:
page:ffffea000262fcc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0xfff00000000000()
raw: 00fff00000000000 0000000000000000 ffffffff02620101 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888098bf3480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888098bf3500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888098bf3580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                      ^
 ffff888098bf3600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888098bf3680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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