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 ffff8881cb40b568 by task kworker/0:5/2775 CPU: 0 PID: 2775 Comm: kworker/0:5 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:ffffea00072d02c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x200000000000000() raw: 0200000000000000 0000000000000000 ffffea00072d02c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881cb40b400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881cb40b480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881cb40b500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8881cb40b580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881cb40b600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================