usb 2-1: Direct firmware load for isl3887usb failed with error -2
usb 2-1: 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 ffff8881cca33568 by task kworker/1:0/17

CPU: 1 PID: 17 Comm: kworker/1:0 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

Allocated by task 243:
 save_stack+0x1b/0x80 /mm/kasan/common.c:71
 set_track /mm/kasan/common.c:79 [inline]
 __kasan_kmalloc /mm/kasan/common.c:489 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 /mm/kasan/common.c:462
 slab_post_alloc_hook /mm/slab.h:437 [inline]
 slab_alloc_node /mm/slub.c:2748 [inline]
 slab_alloc /mm/slub.c:2756 [inline]
 kmem_cache_alloc+0xca/0x270 /mm/slub.c:2761
 getname_flags /fs/namei.c:138 [inline]
 getname_flags+0xd2/0x5b0 /fs/namei.c:128
 getname /fs/namei.c:209 [inline]
 do_renameat2+0x1c5/0xbb0 /fs/namei.c:4550
 __do_sys_rename /fs/namei.c:4671 [inline]
 __se_sys_rename /fs/namei.c:4669 [inline]
 __x64_sys_rename+0x5d/0x80 /fs/namei.c:4669
 do_syscall_64+0xb7/0x560 /arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 243:
 save_stack+0x1b/0x80 /mm/kasan/common.c:71
 set_track /mm/kasan/common.c:79 [inline]
 __kasan_slab_free+0x130/0x180 /mm/kasan/common.c:451
 slab_free_hook /mm/slub.c:1421 [inline]
 slab_free_freelist_hook /mm/slub.c:1448 [inline]
 slab_free /mm/slub.c:2994 [inline]
 kmem_cache_free+0xa8/0x2a0 /mm/slub.c:3010
 putname+0xe1/0x120 /fs/namei.c:259
 do_renameat2+0x267/0xbb0 /fs/namei.c:4644
 __do_sys_rename /fs/namei.c:4671 [inline]
 __se_sys_rename /fs/namei.c:4669 [inline]
 __x64_sys_rename+0x5d/0x80 /fs/namei.c:4669
 do_syscall_64+0xb7/0x560 /arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881cca33300
 which belongs to the cache names_cache of size 4096
The buggy address is located 616 bytes inside of
 4096-byte region [ffff8881cca33300, ffff8881cca34300)
The buggy address belongs to the page:
page:ffffea0007328c00 refcount:1 mapcount:0 mapping:ffff8881dad0b000 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000200 ffff8881dad0b000
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cca33400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cca33480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881cca33500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff8881cca33580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cca33600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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