Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
==================================================================
BUG: KASAN: slab-use-after-free in skb_dst_drop include/net/dst.h:274 [inline]
BUG: KASAN: slab-use-after-free in skb_release_head_state+0x40/0x28c net/core/skbuff.c:1157
Read of size 8 at addr ffff0000c77c4918 by task kworker/u9:4/6289

CPU: 0 PID: 6289 Comm: kworker/u9:4 Not tainted 6.10.0-rc5-syzkaller-g5e456a31d1ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: hci0 hci_rx_work
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x198/0x538 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 skb_dst_drop include/net/dst.h:274 [inline]
 skb_release_head_state+0x40/0x28c net/core/skbuff.c:1157
 skb_release_all net/core/skbuff.c:1171 [inline]
 __kfree_skb net/core/skbuff.c:1187 [inline]
 kfree_skb_reason+0x188/0x490 net/core/skbuff.c:1223
 kfree_skb include/linux/skbuff.h:1257 [inline]
 hci_req_sync_complete+0xb0/0x248 net/bluetooth/hci_request.c:109
 hci_event_packet+0xab8/0x105c net/bluetooth/hci_event.c:7479
 hci_rx_work+0x318/0xa78 net/bluetooth/hci_core.c:4074
 process_one_work+0x79c/0x15b8 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3393
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Allocated by task 6289:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3941 [inline]
 slab_alloc_node mm/slub.c:4001 [inline]
 kmem_cache_alloc_noprof+0x1c0/0x350 mm/slub.c:4008
 skb_clone+0x1c8/0x330 net/core/skbuff.c:2052
 hci_send_cmd_sync net/bluetooth/hci_core.c:4123 [inline]
 hci_cmd_work+0x174/0x568 net/bluetooth/hci_core.c:4143
 process_one_work+0x79c/0x15b8 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3393
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

The buggy address belongs to the object at ffff0000c77c48c0
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 88 bytes inside of
 freed 240-byte region [ffff0000c77c48c0, ffff0000c77c49b0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077c4
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 05ffc00000000000 ffff0000c1bcc780 fffffdffc3405600 dead000000000002
raw: 0000000000000000 00000000800c000c 00000001ffffefff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000c77c4800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
 ffff0000c77c4880: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff0000c77c4900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff0000c77c4980: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
 ffff0000c77c4a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================