Bluetooth: hci0: Opcode 0x0c1a failed: -110
Bluetooth: hci0: Error when powering off device on rfkill (-110)
==================================================================
BUG: KASAN: slab-use-after-free in sco_conn_free net/bluetooth/sco.c:87 [inline]
BUG: KASAN: slab-use-after-free in kref_put include/linux/kref.h:65 [inline]
BUG: KASAN: slab-use-after-free in sco_conn_put+0x471/0x4c0 net/bluetooth/sco.c:107
Write of size 8 at addr ffff8880285445a0 by task kworker/3:2/5953

CPU: 3 UID: 0 PID: 5953 Comm: kworker/3:2 Not tainted 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events rfkill_op_handler
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+0xd9/0x110 mm/kasan/report.c:634
 sco_conn_free net/bluetooth/sco.c:87 [inline]
 kref_put include/linux/kref.h:65 [inline]
 sco_conn_put+0x471/0x4c0 net/bluetooth/sco.c:107
 sco_conn_del+0x26f/0x2e0 net/bluetooth/sco.c:271
 sco_disconn_cfm+0x76/0xb0 net/bluetooth/sco.c:1436
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2044 [inline]
 hci_conn_hash_flush+0x10b/0x260 net/bluetooth/hci_conn.c:2698
 hci_dev_close_sync+0x603/0x11a0 net/bluetooth/hci_sync.c:5197
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
 hci_rfkill_set_block+0x225/0x360 net/bluetooth/hci_core.c:911
 rfkill_set_block+0x203/0x560 net/rfkill/core.c:346
 rfkill_epo+0x8e/0x1d0 net/rfkill/core.c:466
 __rfkill_handle_global_op net/rfkill/input.c:60 [inline]
 rfkill_op_handler+0x262/0x280 net/rfkill/input.c:108
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 10658:
 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
 kmalloc_noprof include/linux/slab.h:902 [inline]
 kzalloc_noprof include/linux/slab.h:1036 [inline]
 copy_verifier_state kernel/bpf/verifier.c:1667 [inline]
 copy_verifier_state+0xad7/0xe70 kernel/bpf/verifier.c:1635
 is_state_visited kernel/bpf/verifier.c:18812 [inline]
 do_check kernel/bpf/verifier.c:18974 [inline]
 do_check_common+0x459e/0xb960 kernel/bpf/verifier.c:22273
 do_check_main kernel/bpf/verifier.c:22364 [inline]
 bpf_check+0x7801/0xb8c0 kernel/bpf/verifier.c:23160
 bpf_prog_load+0xe3c/0x2480 kernel/bpf/syscall.c:2952
 __sys_bpf+0x478f/0x49f0 kernel/bpf/syscall.c:5795
 __do_sys_bpf kernel/bpf/syscall.c:5902 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5900 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5900
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 10658:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2376 [inline]
 slab_free mm/slub.c:4633 [inline]
 kfree+0x2c4/0x4d0 mm/slub.c:4832
 free_func_state kernel/bpf/verifier.c:1608 [inline]
 free_func_state kernel/bpf/verifier.c:1603 [inline]
 free_verifier_state+0xa3/0x1c0 kernel/bpf/verifier.c:1617
 free_states kernel/bpf/verifier.c:22154 [inline]
 do_check_common+0x1eef/0xb960 kernel/bpf/verifier.c:22285
 do_check_main kernel/bpf/verifier.c:22364 [inline]
 bpf_check+0x7801/0xb8c0 kernel/bpf/verifier.c:23160
 bpf_prog_load+0xe3c/0x2480 kernel/bpf/syscall.c:2952
 __sys_bpf+0x478f/0x49f0 kernel/bpf/syscall.c:5795
 __do_sys_bpf kernel/bpf/syscall.c:5902 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5900 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5900
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888028544000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1440 bytes inside of
 freed 2048-byte region [ffff888028544000, ffff888028544800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888028544000 pfn:0x28540
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042f00 ffffea0000bf0210 ffffea0000d0f810
raw: ffff888028544000 0000000000080004 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042f00 ffffea0000bf0210 ffffea0000d0f810
head: ffff888028544000 0000000000080004 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0000a15001 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5950, tgid 5950 (syz-executor), ts 45670216168, free_ts 45665838890
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x221/0x2470 mm/page_alloc.c:4740
 alloc_pages_mpol+0x1fc/0x540 mm/mempolicy.c:2301
 alloc_slab_page mm/slub.c:2446 [inline]
 allocate_slab mm/slub.c:2610 [inline]
 new_slab+0x23d/0x330 mm/slub.c:2663
 ___slab_alloc+0xc37/0x1640 mm/slub.c:3849
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3939
 __slab_alloc_node mm/slub.c:4014 [inline]
 slab_alloc_node mm/slub.c:4175 [inline]
 __do_kmalloc_node mm/slub.c:4317 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4337
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:537
 pskb_expand_head+0x237/0x1050 net/core/skbuff.c:2185
 netlink_trim+0x22d/0x310 net/netlink/af_netlink.c:1294
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1500
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2576
 rtnl_notify net/core/rtnetlink.c:952 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4386 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4402 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4389 [inline]
 rtnetlink_event+0x177/0x1f0 net/core/rtnetlink.c:6972
 notifier_call_chain+0xb7/0x410 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2206
page last free pid 5950 tgid 5950 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_frozen_pages+0x6db/0xfb0 mm/page_alloc.c:2660
 __put_partials+0x14c/0x170 mm/slub.c:3176
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4138 [inline]
 slab_alloc_node mm/slub.c:4187 [inline]
 __kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4344
 kmalloc_noprof include/linux/slab.h:902 [inline]
 kzalloc_noprof include/linux/slab.h:1036 [inline]
 ref_tracker_alloc+0x17c/0x5b0 lib/ref_tracker.c:203
 __netdev_tracker_alloc include/linux/netdevice.h:4282 [inline]
 netdev_hold include/linux/netdevice.h:4311 [inline]
 netdev_hold include/linux/netdevice.h:4306 [inline]
 register_netdevice+0x166a/0x1eb0 net/core/dev.c:10968
 veth_newlink+0x3c2/0x8f0 drivers/net/veth.c:1844
 rtnl_newlink_create net/core/rtnetlink.c:3796 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3907 [inline]
 rtnl_newlink+0xb95/0x1d60 net/core/rtnetlink.c:4022
 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6912
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2533
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x8cb/0xd70 net/netlink/af_netlink.c:1882
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:733 [inline]
 __sys_sendto+0x488/0x4f0 net/socket.c:2187
 __do_sys_sendto net/socket.c:2194 [inline]
 __se_sys_sendto net/socket.c:2190 [inline]
 __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2190

Memory state around the buggy address:
 ffff888028544480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888028544500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888028544580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff888028544600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888028544680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================