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BUG: KASAN: slab-use-after-free in hci_sock_get_cookie+0x49/0x50 net/bluetooth/hci_sock.c:96
Read of size 4 at addr ffff88814274f5c0 by task syz.5.3441/19937

CPU: 0 UID: 0 PID: 19937 Comm: syz.5.3441 Not tainted 6.15.0-rc2-syzkaller-00258-g750d0ac001e8 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x16e/0x5b0 mm/kasan/report.c:521
 kasan_report+0x143/0x180 mm/kasan/report.c:634
 hci_sock_get_cookie+0x49/0x50 net/bluetooth/hci_sock.c:96
 mgmt_cmd_status+0x1be/0x4d0 net/bluetooth/mgmt_util.c:149
 cmd_status_rsp net/bluetooth/mgmt.c:1464 [inline]
 cmd_complete_rsp+0x114/0x180 net/bluetooth/mgmt.c:1484
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:242
 __mgmt_power_off+0x18b/0x440 net/bluetooth/mgmt.c:9429
 hci_dev_close_sync+0x701/0x1260 net/bluetooth/hci_sync.c:5221
 hci_dev_do_close net/bluetooth/hci_core.c:483 [inline]
 hci_dev_close+0x112/0x210 net/bluetooth/hci_core.c:508
 sock_do_ioctl+0x152/0x400 net/socket.c:1190
 sock_ioctl+0x644/0x900 net/socket.c:1311
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56bc58e169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f56bd3a4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f56bc7b5fa0 RCX: 00007f56bc58e169
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000006
RBP: 00007f56bc610a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f56bc7b5fa0 R15: 00007ffe9a521088
 </TASK>

Allocated by task 11689:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4341 [inline]
 __kmalloc_noprof+0x28e/0x4d0 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 sk_prot_alloc+0xe0/0x210 net/core/sock.c:2198
 sk_alloc+0x3e/0x370 net/core/sock.c:2254
 bt_sock_alloc+0x3c/0x340 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xa1/0x190 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x161/0x230 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x4c0/0xa30 net/socket.c:1541
 sock_create net/socket.c:1599 [inline]
 __sys_socket_create net/socket.c:1636 [inline]
 __sys_socket+0x14d/0x3c0 net/socket.c:1683
 __do_sys_socket net/socket.c:1697 [inline]
 __se_sys_socket net/socket.c:1695 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1695
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 19938:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2398 [inline]
 slab_free mm/slub.c:4656 [inline]
 kfree+0x198/0x430 mm/slub.c:4855
 sk_prot_free net/core/sock.c:2237 [inline]
 __sk_destruct+0x4ce/0x650 net/core/sock.c:2332
 sock_put include/net/sock.h:1944 [inline]
 mgmt_pending_free net/bluetooth/mgmt_util.c:290 [inline]
 mgmt_pending_remove+0x13e/0x1a0 net/bluetooth/mgmt_util.c:298
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:242
 mgmt_index_removed+0x135/0x3a0 net/bluetooth/mgmt.c:9362
 hci_sock_bind+0xd74/0x12d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1810 [inline]
 __sys_bind+0x1de/0x290 net/socket.c:1841
 __do_sys_bind net/socket.c:1846 [inline]
 __se_sys_bind net/socket.c:1844 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1844
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88814274f000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1472 bytes inside of
 freed 2048-byte region [ffff88814274f000, ffff88814274f800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88814274e000 pfn:0x142748
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000240(workingset|head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000240 ffff88801b042000 ffffea000510b810 ffffea000510a410
raw: ffff88814274e000 0000000000080006 00000000f5000000 0000000000000000
head: 057ff00000000240 ffff88801b042000 ffffea000510b810 ffffea000510a410
head: ffff88814274e000 0000000000080006 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea000509d201 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 6237931894, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1718
 prep_new_page mm/page_alloc.c:1726 [inline]
 get_page_from_freelist+0x360a/0x37a0 mm/page_alloc.c:3700
 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4982
 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301
 alloc_slab_page mm/slub.c:2468 [inline]
 allocate_slab+0x8f/0x3b0 mm/slub.c:2632
 new_slab mm/slub.c:2686 [inline]
 ___slab_alloc+0xc3b/0x1500 mm/slub.c:3872
 __slab_alloc+0x58/0xa0 mm/slub.c:3962
 __slab_alloc_node mm/slub.c:4037 [inline]
 slab_alloc_node mm/slub.c:4198 [inline]
 __kmalloc_cache_noprof+0x26a/0x370 mm/slub.c:4367
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 acpi_ds_create_walk_state+0x105/0x2a0 drivers/acpi/acpica/dswstate.c:518
 acpi_ds_call_control_method+0x143/0x7e0 drivers/acpi/acpica/dsmethod.c:498
 acpi_ps_parse_aml+0x2df/0x960 drivers/acpi/acpica/psparse.c:503
 acpi_ps_execute_method+0x74d/0x880 drivers/acpi/acpica/psxface.c:190
 acpi_ns_evaluate+0x5df/0xa40 drivers/acpi/acpica/nseval.c:205
 acpi_evaluate_object+0x59d/0xaf0 drivers/acpi/acpica/nsxfeval.c:354
 acpi_evaluate_integer+0x115/0x2f0 drivers/acpi/utils.c:260
 acpi_bus_get_status_handle drivers/acpi/bus.c:82 [inline]
 acpi_bus_get_status+0x1ad/0x470 drivers/acpi/bus.c:111
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88814274f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88814274f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88814274f580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff88814274f600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88814274f680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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