==================================================================
BUG: KASAN: slab-out-of-bounds in hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5933 [inline]
BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0xdd0/0x31c0 net/bluetooth/hci_event.c:6207
Read of size 1 at addr ffff0000d603ec04 by task kworker/u5:5/4042

CPU: 0 PID: 4042 Comm: kworker/u5:5 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: hci1 hci_rx_work
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
 hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5933 [inline]
 hci_le_meta_evt+0xdd0/0x31c0 net/bluetooth/hci_event.c:6207
 hci_event_packet+0xd34/0x12b4 net/bluetooth/hci_event.c:6524
 hci_rx_work+0x1d0/0x830 net/bluetooth/hci_core.c:5160
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

Allocated by task 5787:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc_node_track_caller+0x234/0x448 mm/slub.c:4963
 kmalloc_reserve+0xe8/0x270 net/core/skbuff.c:356
 __alloc_skb+0x1a4/0x584 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1162 [inline]
 bt_skb_alloc include/net/bluetooth/bluetooth.h:391 [inline]
 vhci_get_user drivers/bluetooth/hci_vhci.c:170 [inline]
 vhci_write+0xb8/0x3b8 drivers/bluetooth/hci_vhci.c:290
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x884/0xb44 fs/read_write.c:594
 ksys_write+0x15c/0x26c fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Last potentially related work creation:
 kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348
 kvfree_call_rcu+0xb8/0x684 kernel/rcu/tree.c:3596
 batadv_hardif_release net/batman-adv/hard-interface.c:54 [inline]
 kref_put include/linux/kref.h:65 [inline]
 batadv_hardif_put+0x100/0x19c net/batman-adv/hard-interface.h:95
 batadv_hard_if_event+0x678/0xe10 net/batman-adv/hard-interface.c:1008
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2049 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
 call_netdevice_notifiers net/core/dev.c:2075 [inline]
 unregister_netdevice_many+0xec8/0x18a8 net/core/dev.c:11133
 unregister_netdevice_queue+0x2d0/0x31c net/core/dev.c:11066
 unregister_netdevice include/linux/netdevice.h:3020 [inline]
 _cfg80211_unregister_wdev+0x168/0x4a8 net/wireless/core.c:1129
 cfg80211_unregister_wdev+0x24/0x34 net/wireless/core.c:1174
 ieee80211_if_remove+0x1a4/0x294 net/mac80211/iface.c:2105
 ieee80211_del_iface+0x20/0x34 net/mac80211/cfg.c:145
 rdev_del_virtual_intf net/wireless/rdev-ops.h:57 [inline]
 nl80211_del_interface+0x1dc/0x66c net/wireless/nl80211.c:4118
 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0xc48/0x1044 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2489
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2436
 ___sys_sendmsg+0x214/0x294 net/socket.c:2490
 __sys_sendmsg net/socket.c:2519 [inline]
 __do_sys_sendmsg net/socket.c:2528 [inline]
 __se_sys_sendmsg net/socket.c:2526 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2526
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000d603e800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 4 bytes to the right of
 1024-byte region [ffff0000d603e800, ffff0000d603ec00)
The buggy address belongs to the page:
page:00000000b0a6ea07 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x116038
head:00000000b0a6ea07 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 fffffc000357be00 0000000200000002 ffff0000c0002780
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d603eb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d603eb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000d603ec00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff0000d603ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d603ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
Bluetooth: hci1: Unknown advertising packet type: 0x7000