netlink: 'syz-executor.1': attribute type 13 has an invalid length.
FAT-fs (loop3): count of clusters too big (4294966678)
FAT-fs (loop4): invalid media value (0x00)
==================================================================
BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:348 [inline]
BUG: KASAN: slab-out-of-bounds in bacpy include/net/bluetooth/bluetooth.h:236 [inline]
BUG: KASAN: slab-out-of-bounds in hci_extended_inquiry_result_evt net/bluetooth/hci_event.c:4162 [inline]
BUG: KASAN: slab-out-of-bounds in hci_event_packet+0x7a85/0x80f9 net/bluetooth/hci_event.c:5844
Read of size 6 at addr ffff8880a47282c6 by task kworker/u5:1/21017

CPU: 0 PID: 21017 Comm: kworker/u5:1 Not tainted 4.19.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_rx_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
FAT-fs (loop3): Can't find a valid FAT filesystem
 print_address_description.cold+0x54/0x222 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold+0x88/0x2b9 mm/kasan/report.c:396
 memcpy include/linux/string.h:348 [inline]
 bacpy include/net/bluetooth/bluetooth.h:236 [inline]
 hci_extended_inquiry_result_evt net/bluetooth/hci_event.c:4162 [inline]
 hci_event_packet+0x7a85/0x80f9 net/bluetooth/hci_event.c:5844
 hci_rx_work+0x47b/0xab0 net/bluetooth/hci_core.c:4359
 process_one_work+0x892/0x1580 kernel/workqueue.c:2155
 worker_thread+0x96/0xe20 kernel/workqueue.c:2298
 kthread+0x30b/0x410 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Allocated by task 21009:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703
 __kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:137
 __alloc_skb+0xef/0x5b0 net/core/skbuff.c:205
 alloc_skb include/linux/skbuff.h:995 [inline]
 bt_skb_alloc include/net/bluetooth/bluetooth.h:339 [inline]
 vhci_get_user drivers/bluetooth/hci_vhci.c:180 [inline]
 vhci_write+0xbd/0x450 drivers/bluetooth/hci_vhci.c:299
FAT-fs (loop4): Can't find a valid FAT filesystem
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x512/0x760 fs/read_write.c:487
 vfs_write+0x1f3/0x540 fs/read_write.c:549
 ksys_write+0x12b/0x2a0 fs/read_write.c:599
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 20210:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xce/0x220 mm/slab.c:3822
 skb_free_head+0x91/0xb0 net/core/skbuff.c:554
 skb_release_data+0x623/0x8e0 net/core/skbuff.c:574
 skb_release_all+0x46/0x60 net/core/skbuff.c:631
 __kfree_skb net/core/skbuff.c:645 [inline]
 kfree_skb+0xe1/0x390 net/core/skbuff.c:663
 unix_dgram_sendmsg+0x66a/0x10d0 net/unix/af_unix.c:1838
 unix_seqpacket_sendmsg+0x111/0x1a0 net/unix/af_unix.c:2082
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115
 __sys_sendmmsg+0x195/0x470 net/socket.c:2210
 __do_sys_sendmmsg net/socket.c:2239 [inline]
 __se_sys_sendmmsg net/socket.c:2236 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880a47280c0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 6 bytes to the right of
 512-byte region [ffff8880a47280c0, ffff8880a47282c0)
The buggy address belongs to the page:
page:ffffea000291ca00 count:1 mapcount:0 mapping:ffff88812c3dc940 index:0xffff8880a4728d40
flags: 0xfffe0000000100(slab)
raw: 00fffe0000000100 ffffea000145a3c8 ffffea00013ef5c8 ffff88812c3dc940
raw: ffff8880a4728d40 ffff8880a47280c0 0000000100000005 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a4728180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880a4728200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880a4728280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                           ^
 ffff8880a4728300: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff8880a4728380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================