==================================================================
Bluetooth: hci2: Opcode 0x0401 failed: -22
BUG: KASAN: slab-use-after-free in hci_cmd_work+0x66d/0x6d0
Read of size 2 at addr ffff88801b5302b8 by task kworker/u11:0/12023

CPU: 1 UID: 0 PID: 12023 Comm: kworker/u11:0 Not tainted 6.18.0-rc5-next-20251114 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci2 hci_cmd_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xca/0x120
 print_report+0xcb/0x610
 kasan_report+0xca/0x100
 hci_cmd_work+0x66d/0x6d0
 process_one_work+0x8e1/0x19c0
 worker_thread+0x67e/0xe90
 kthread+0x3c8/0x740
 ret_from_fork+0x67a/0x7a0
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 18760:
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 __kasan_slab_alloc+0x59/0x70
 kmem_cache_alloc_node_noprof+0x228/0x6b0
 __alloc_skb+0x2ab/0x370
 hci_cmd_sync_alloc+0x34/0x300
 __hci_cmd_sync_sk+0xf7/0x5c0
 __hci_cmd_sync_status_sk+0x4d/0x1a0
 hci_inquiry_sync+0x1f2/0x230
 hci_inquiry+0x59e/0xb80
 hci_sock_ioctl+0x2b5/0x810
 sock_do_ioctl+0xd1/0x240
 sock_ioctl+0x40d/0x630
 __x64_sys_ioctl+0x18f/0x210
 do_syscall_64+0xbf/0x430
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 12023:
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 kasan_save_free_info+0x3a/0x60
 __kasan_slab_free+0x43/0x70
 kmem_cache_free+0x26f/0x500
 kfree_skbmem+0x18a/0x1f0
 sk_skb_reason_drop+0x10e/0x1b0
 hci_send_frame+0x3a1/0x420
 hci_cmd_work+0x281/0x6d0
 process_one_work+0x8e1/0x19c0
 worker_thread+0x67e/0xe90
 kthread+0x3c8/0x740
 ret_from_fork+0x67a/0x7a0
 ret_from_fork_asm+0x1a/0x30

The buggy address belongs to the object at ffff88801b530280
 which belongs to the cache skbuff_head_cache of size 232
The buggy address is located 56 bytes inside of
 freed 232-byte region [ffff88801b530280, ffff88801b530368)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b530
memcg:ffff88800fc00901
anon flags: 0x100000000000000(node=0|zone=1)
page_type: f5(slab)
raw: 0100000000000000 ffff8880096c78c0 0000000000000000 dead000000000001
raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff88800fc00901
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88801b530180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801b530200: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
>ffff88801b530280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88801b530300: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
 ffff88801b530380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
==================================================================
Bluetooth: hci2: command tx timeout
loop5: detected capacity change from 0 to 2048
EXT4-fs (loop5): VFS: Can't find ext4 filesystem
loop5: detected capacity change from 0 to 2048
EXT4-fs (loop5): VFS: Can't find ext4 filesystem