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BUG: KASAN: use-after-free in usbhid_power+0xca/0xe0 drivers/hid/usbhid/hid-core.c:1234
Read of size 8 at addr ffff8881cab64008 by task syz-executor.2/4070

CPU: 0 PID: 4070 Comm: syz-executor.2 Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 print_address_description+0x6a/0x32c mm/kasan/report.c:351
 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
 kasan_report+0xe/0x12 mm/kasan/common.c:618
 usbhid_power+0xca/0xe0 drivers/hid/usbhid/hid-core.c:1234
 hid_hw_power include/linux/hid.h:1038 [inline]
 hidraw_open+0x20d/0x740 drivers/hid/hidraw.c:282
 chrdev_open+0x219/0x5c0 fs/char_dev.c:414
 do_dentry_open+0x494/0x1120 fs/open.c:797
 do_last fs/namei.c:3416 [inline]
 path_openat+0x1430/0x3f50 fs/namei.c:3533
 do_filp_open+0x1a1/0x280 fs/namei.c:3563
 do_sys_open+0x3c0/0x580 fs/open.c:1089
 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4137d1
Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fa58da787a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004137d1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fa58da78850
RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000
R10: 00007fa58da799d0 R11: 0000000000000293 R12: 00007fa58da796d4
R13: 00000000004c8cbf R14: 00000000004dfc90 R15: 00000000ffffffff

Allocated by task 2749:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 __kasan_kmalloc mm/kasan/common.c:493 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:466
 slab_post_alloc_hook mm/slab.h:520 [inline]
 slab_alloc_node mm/slub.c:2770 [inline]
 __kmalloc_node_track_caller+0xfc/0x380 mm/slub.c:4365
 __kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:141
 __alloc_skb+0xef/0x5a0 net/core/skbuff.c:209
 alloc_skb include/linux/skbuff.h:1055 [inline]
 alloc_uevent_skb+0x7b/0x210 lib/kobject_uevent.c:289
 uevent_net_broadcast_untagged lib/kobject_uevent.c:325 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:408 [inline]
 kobject_uevent_env+0x8ee/0x1150 lib/kobject_uevent.c:592
 device_del+0x6b2/0xb10 drivers/base/core.c:2349
 usb_disconnect+0x4c3/0x8d0 drivers/usb/core/hub.c:2225
 hub_port_connect drivers/usb/core/hub.c:4949 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
 port_event drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 238:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 __kasan_slab_free+0x130/0x180 mm/kasan/common.c:455
 slab_free_hook mm/slub.c:1423 [inline]
 slab_free_freelist_hook mm/slub.c:1474 [inline]
 slab_free mm/slub.c:3016 [inline]
 kfree+0xe4/0x2f0 mm/slub.c:3957
 skb_free_head+0x8b/0xa0 net/core/skbuff.c:591
 skb_release_data+0x41f/0x7c0 net/core/skbuff.c:611
 skb_release_all+0x46/0x60 net/core/skbuff.c:665
 __kfree_skb net/core/skbuff.c:679 [inline]
 consume_skb net/core/skbuff.c:838 [inline]
 consume_skb+0xd9/0x320 net/core/skbuff.c:832
 skb_free_datagram+0x16/0xf0 net/core/datagram.c:328
 netlink_recvmsg+0x65e/0xee0 net/netlink/af_netlink.c:1996
 sock_recvmsg_nosec net/socket.c:871 [inline]
 sock_recvmsg net/socket.c:889 [inline]
 sock_recvmsg+0xca/0x110 net/socket.c:885
 ___sys_recvmsg+0x271/0x5a0 net/socket.c:2480
 __sys_recvmsg+0xe9/0x1b0 net/socket.c:2537
 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881cab64000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 8 bytes inside of
 1024-byte region [ffff8881cab64000, ffff8881cab64400)
The buggy address belongs to the page:
page:ffffea00072ad900 refcount:1 mapcount:0 mapping:ffff8881da002280 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da002280
raw: 0000000000000000 00000000000e000e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cab63f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881cab63f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881cab64000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8881cab64080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cab64100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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