usb 6-1: Loading firmware file isl3887usb
usb 6-1: Direct firmware load for isl3887usb failed with error -2
usb 6-1: Firmware not found.
==================================================================
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 ffff8881ce593568 by task kworker/0:1/12

CPU: 0 PID: 12 Comm: kworker/0:1 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 244:
 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]
 __kmalloc_node_track_caller+0xee/0x370 /mm/slub.c:4363
 __kmalloc_reserve.isra.0+0x39/0xe0 /net/core/skbuff.c:138
 __alloc_skb+0xef/0x5a0 /net/core/skbuff.c:206
 alloc_skb /./include/linux/skbuff.h:1054 [inline]
 netlink_alloc_large_skb /net/netlink/af_netlink.c:1179 [inline]
 netlink_sendmsg+0x8d6/0xcc0 /net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec /net/socket.c:646 [inline]
 sock_sendmsg+0xcf/0x120 /net/socket.c:665
 ___sys_sendmsg+0x803/0x920 /net/socket.c:2286
 __sys_sendmsg+0xec/0x1b0 /net/socket.c:2324
 do_syscall_64+0xb7/0x560 /arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 341:
 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]
 kfree+0xd7/0x280 /mm/slub.c:3949
 skb_free_head+0x8b/0xa0 /net/core/skbuff.c:588
 skb_release_data+0x41f/0x7c0 /net/core/skbuff.c:608
 skb_release_all+0x46/0x60 /net/core/skbuff.c:662
 __kfree_skb /net/core/skbuff.c:676 [inline]
 consume_skb /net/core/skbuff.c:736 [inline]
 consume_skb+0xc0/0x2f0 /net/core/skbuff.c:730
 skb_free_datagram+0x16/0xf0 /net/core/datagram.c:328
 netlink_recvmsg+0x65e/0xea0 /net/netlink/af_netlink.c:2001
 sock_recvmsg_nosec /net/socket.c:877 [inline]
 sock_recvmsg /net/socket.c:894 [inline]
 sock_recvmsg+0xca/0x110 /net/socket.c:890
 ___sys_recvmsg+0x271/0x5a0 /net/socket.c:2448
 __sys_recvmsg+0xe9/0x1b0 /net/socket.c:2497
 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 ffff8881ce593180
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 1000 bytes inside of
 1024-byte region [ffff8881ce593180, ffff8881ce593580)
The buggy address belongs to the page:
page:ffffea0007396400 refcount:1 mapcount:0 mapping:ffff8881dac02a00 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000200 ffff8881dac02a00
raw: 0000000000000000 00000000800e000e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881ce593400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881ce593480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881ce593500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff8881ce593580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881ce593600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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