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BUG: KASAN: slab-out-of-bounds in skb_put_data include/linux/skbuff.h:2752 [inline]
BUG: KASAN: slab-out-of-bounds in hci_cmd_sync_alloc+0x300/0x3a0 net/bluetooth/hci_sync.c:67
Read of size 29542 at addr ffff888100ad1306 by task kworker/u33:1/5286

CPU: 0 UID: 0 PID: 5286 Comm: kworker/u33:1 Not tainted 6.15.0-rc4-syzkaller-00040-g8bac8898fe39 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xc3/0x670 mm/kasan/report.c:521
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 __asan_memcpy+0x23/0x60 mm/kasan/shadow.c:105
 skb_put_data include/linux/skbuff.h:2752 [inline]
 hci_cmd_sync_alloc+0x300/0x3a0 net/bluetooth/hci_sync.c:67
 hci_cmd_sync_add net/bluetooth/hci_sync.c:99 [inline]
 __hci_cmd_sync_sk+0x157/0xc90 net/bluetooth/hci_sync.c:168
 __hci_cmd_sync_ev+0x3e/0x50 net/bluetooth/hci_sync.c:250
 send_hci_cmd_sync+0x18d/0x3f0 net/bluetooth/mgmt.c:2540
 hci_cmd_sync_work+0x1a8/0x430 net/bluetooth/hci_sync.c:332
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 5927:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4341 [inline]
 __kmalloc_node_track_caller_noprof+0x221/0x510 mm/slub.c:4360
 kmemdup_noprof+0x29/0x60 mm/util.c:137
 kmemdup_noprof include/linux/fortify-string.h:765 [inline]
 mgmt_pending_new+0x10b/0x290 net/bluetooth/mgmt_util.c:259
 mgmt_hci_cmd_sync net/bluetooth/mgmt.c:2574 [inline]
 mgmt_hci_cmd_sync+0x58/0x1c0 net/bluetooth/mgmt.c:2562
 hci_mgmt_cmd net/bluetooth/hci_sock.c:1712 [inline]
 hci_sock_sendmsg+0x151f/0x25e0 net/bluetooth/hci_sock.c:1832
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 sock_write_iter+0x4fc/0x5b0 net/socket.c:1131
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x5ba/0x1180 fs/read_write.c:684
 ksys_write+0x205/0x240 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888100ad1300
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 6 bytes inside of
 allocated 7-byte region [ffff888100ad1300, ffff888100ad1307)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100ad1
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000000 ffff88801b442500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 2799476867, free_ts 2694974494
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1718
 prep_new_page mm/page_alloc.c:1726 [inline]
 get_page_from_freelist+0x135c/0x3920 mm/page_alloc.c:3688
 __alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4970
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301
 alloc_slab_page mm/slub.c:2468 [inline]
 allocate_slab mm/slub.c:2632 [inline]
 new_slab+0x244/0x340 mm/slub.c:2686
 ___slab_alloc+0xd9c/0x1940 mm/slub.c:3872
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3962
 __slab_alloc_node mm/slub.c:4037 [inline]
 slab_alloc_node mm/slub.c:4198 [inline]
 __do_kmalloc_node mm/slub.c:4340 [inline]
 __kmalloc_noprof+0x2f2/0x510 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 acpi_ns_internalize_name+0x144/0x220 drivers/acpi/acpica/nsutils.c:331
 acpi_ns_get_node_unlocked+0x163/0x310 drivers/acpi/acpica/nsutils.c:666
 acpi_ns_get_node+0x4c/0x70 drivers/acpi/acpica/nsutils.c:726
 acpi_ns_evaluate+0x6ef/0xca0 drivers/acpi/acpica/nseval.c:62
 acpi_ut_evaluate_object+0xda/0x4a0 drivers/acpi/acpica/uteval.c:60
 acpi_ut_execute_power_methods+0x125/0x240 drivers/acpi/acpica/uteval.c:288
 acpi_get_object_info+0x9b8/0xba0 drivers/acpi/acpica/nsxfname.c:356
 acpi_set_pnp_ids drivers/acpi/scan.c:1408 [inline]
 acpi_init_device_object+0xe3b/0x1970 drivers/acpi/scan.c:1821
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2725
 __kmem_cache_do_shrink+0x30b/0x380 mm/slub.c:6148
 acpi_os_purge_cache+0x15/0x20 drivers/acpi/osl.c:1605
 acpi_purge_cached_objects+0x34/0x100 drivers/acpi/acpica/utxface.c:237
 acpi_initialize_objects+0x47/0xa0 drivers/acpi/acpica/utxfinit.c:250
 acpi_bus_init drivers/acpi/bus.c:1367 [inline]
 acpi_init+0x168/0xb80 drivers/acpi/bus.c:1454
 do_one_initcall+0x120/0x6e0 init/main.c:1257
 do_initcall_level init/main.c:1319 [inline]
 do_initcalls init/main.c:1335 [inline]
 do_basic_setup init/main.c:1354 [inline]
 kernel_init_freeable+0x5c2/0x900 init/main.c:1567
 kernel_init+0x1c/0x2b0 init/main.c:1457
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff888100ad1200: fa fc fc fc fa fc fc fc 00 fc fc fc 00 fc fc fc
 ffff888100ad1280: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
>ffff888100ad1300: 07 fc fc fc 00 fc fc fc fa fc fc fc 00 fc fc fc
                   ^
 ffff888100ad1380: 00 fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
 ffff888100ad1400: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
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