usb 1-1: Direct firmware load for isl3887usb failed with error -2
usb 1-1: Firmware not found.
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BUG: KASAN: use-after-free in p54u_load_firmware_cb.cold+0x97/0x13d /drivers/net/wireless/intersil/p54/p54usb.c:933
Read of size 8 at addr ffff8881cd90f568 by task kworker/0:3/2727

CPU: 0 PID: 2727 Comm: kworker/0:3 Not tainted 5.2.0-rc6+ #15
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+0xca/0x13e /lib/dump_stack.c:113
 print_address_description+0x67/0x231 /mm/kasan/report.c:188
 __kasan_report.cold+0x1a/0x32 /mm/kasan/report.c:317
 kasan_report+0xe/0x20 /mm/kasan/common.c:614
 p54u_load_firmware_cb.cold+0x97/0x13d /drivers/net/wireless/intersil/p54/p54usb.c:933
 request_firmware_work_func+0x126/0x242 /drivers/base/firmware_loader/main.c:785
 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415
 kthread+0x30b/0x410 /kernel/kthread.c:255
 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352

The buggy address belongs to the page:
page:ffffea00073643c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x200000000000000()
raw: 0200000000000000 0000000000000000 ffffea0007364348 0000000000000000
raw: 0000000000000000 00000000000c0000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cd90f400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881cd90f480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881cd90f500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                          ^
 ffff8881cd90f580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881cd90f600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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