Bluetooth: hci5: unknown advertising packet type: 0xff
Bluetooth: hci5: Dropping invalid advertising data
Bluetooth: hci5: Dropping invalid advertising data
Bluetooth: hci5: unknown advertising packet type: 0x1f
==================================================================
BUG: KASAN: slab-out-of-bounds in hci_le_adv_report_evt net/bluetooth/hci_event.c:5394 [inline]
BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x3754/0x3f20 net/bluetooth/hci_event.c:5694
Read of size 1 at addr ffff88809b94c2c2 by task kworker/u5:5/8140

CPU: 0 PID: 8140 Comm: kworker/u5:5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: hci5 hci_rx_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430
 hci_le_adv_report_evt net/bluetooth/hci_event.c:5394 [inline]
 hci_le_meta_evt+0x3754/0x3f20 net/bluetooth/hci_event.c:5694
 hci_event_packet+0x34ad/0x7e20 net/bluetooth/hci_event.c:5959
 hci_rx_work+0x4ad/0xc70 net/bluetooth/hci_core.c:4380
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
IPVS: ftp: loaded support on port[0] = 21
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Allocated by task 26315:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0xae/0x560 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
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x51b/0x770 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 25187:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 skb_free_head net/core/skbuff.c:563 [inline]
 skb_release_data+0x6de/0x920 net/core/skbuff.c:583
 skb_release_all net/core/skbuff.c:640 [inline]
 __kfree_skb net/core/skbuff.c:654 [inline]
 consume_skb+0x113/0x3d0 net/core/skbuff.c:714
 netlink_broadcast_filtered+0x31f/0xbc0 net/netlink/af_netlink.c:1527
 netlink_broadcast+0x35/0x40 net/netlink/af_netlink.c:1549
 uevent_net_broadcast_tagged lib/kobject_uevent.c:371 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:410 [inline]
 kobject_uevent_env+0x11d4/0x1480 lib/kobject_uevent.c:591
 rx_queue_add_kobject net/core/net-sysfs.c:948 [inline]
 net_rx_queue_update_kobjects+0xf2/0x450 net/core/net-sysfs.c:970
 register_queue_kobjects net/core/net-sysfs.c:1587 [inline]
 netdev_register_kobject+0x279/0x430 net/core/net-sysfs.c:1810
 register_netdevice+0xb46/0x10f0 net/core/dev.c:8730
 register_netdev+0x2d/0x50 net/core/dev.c:8859
 ip6gre_init_net+0x39d/0x5b0 net/ipv6/ip6_gre.c:1613
 ops_init+0xb3/0x410 net/core/net_namespace.c:129
 setup_net+0x2c2/0x720 net/core/net_namespace.c:316
 copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439
 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107
 copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165
 copy_process.part.0+0x3a59/0x8260 kernel/fork.c:1916
 copy_process kernel/fork.c:1710 [inline]
 _do_fork+0x22f/0xf30 kernel/fork.c:2219
 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 ffff88809b94c0c0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 2 bytes to the right of
 512-byte region [ffff88809b94c0c0, ffff88809b94c2c0)
The buggy address belongs to the page:
page:ffffea00026e5300 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea0002ada688 ffffea00026f8048 ffff88813bff0940
raw: 0000000000000000 ffff88809b94c0c0 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809b94c180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88809b94c200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88809b94c280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                           ^
 ffff88809b94c300: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff88809b94c380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================