Bluetooth: hci1: Opcode 0x0c1a failed: -110
Bluetooth: hci1: Error when powering off device on rfkill (-110)
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BUG: KASAN: slab-out-of-bounds in __list_del_entry_valid_or_report+0x1d4/0x200 lib/list_debug.c:62
Read of size 8 at addr ffff8880550e5568 by task kworker/3:3/5999

CPU: 3 UID: 0 PID: 5999 Comm: kworker/3:3 Not tainted syzkaller #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: 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:378 [inline]
 print_report+0xcd/0x630 mm/kasan/report.c:482
 kasan_report+0xe0/0x110 mm/kasan/report.c:595
 __list_del_entry_valid_or_report+0x1d4/0x200 lib/list_debug.c:62
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 bt_accept_unlink+0x34/0x2d0 net/bluetooth/af_bluetooth.c:259
 l2cap_sock_teardown_cb+0x1a3/0x3c0 net/bluetooth/l2cap_sock.c:1616
 l2cap_chan_del+0xbd/0x8f0 net/bluetooth/l2cap_core.c:655
 l2cap_conn_del+0x37a/0x730 net/bluetooth/l2cap_core.c:1787
 l2cap_disconn_cfm net/bluetooth/l2cap_core.c:7325 [inline]
 l2cap_disconn_cfm+0x96/0xd0 net/bluetooth/l2cap_core.c:7318
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2121 [inline]
 hci_conn_hash_flush+0x10e/0x260 net/bluetooth/hci_conn.c:2602
 hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5303
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:501
 hci_rfkill_set_block+0x225/0x360 net/bluetooth/hci_core.c:929
 rfkill_set_block+0x1fe/0x550 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+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 7938:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:400 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417
 kasan_kmalloc include/linux/kasan.h:262 [inline]
 __do_kmalloc_node mm/slub.c:5627 [inline]
 __kmalloc_noprof+0x32f/0x880 mm/slub.c:5639
 kmalloc_noprof include/linux/slab.h:961 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 ops_init+0x77/0x5f0 net/core/net_namespace.c:127
 setup_net+0x100/0x390 net/core/net_namespace.c:445
 copy_net_ns+0x2f8/0x690 net/core/net_namespace.c:580
 create_new_namespaces+0x3ea/0xa90 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:218
 ksys_unshare+0x45b/0xa40 kernel/fork.c:3129
 __do_sys_unshare kernel/fork.c:3200 [inline]
 __se_sys_unshare kernel/fork.c:3198 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3198
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880550e5000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 328 bytes to the right of
 allocated 1056-byte region [ffff8880550e5000, ffff8880550e5420)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880550e2000 pfn:0x550e0
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 ffff88801b442f00 ffffea0000b31c10 ffffea0001579410
raw: ffff8880550e2000 0000000000080006 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801b442f00 ffffea0000b31c10 ffffea0001579410
head: ffff8880550e2000 0000000000080006 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001543801 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 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5932, tgid 5932 (syz-executor), ts 56840197400, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x10a3/0x3a30 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x25f/0x2470 mm/page_alloc.c:5183
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3039 [inline]
 allocate_slab mm/slub.c:3212 [inline]
 new_slab+0x24a/0x360 mm/slub.c:3266
 ___slab_alloc+0xdc4/0x1ae0 mm/slub.c:4636
 __slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4755
 __slab_alloc_node mm/slub.c:4831 [inline]
 slab_alloc_node mm/slub.c:5253 [inline]
 __do_kmalloc_node mm/slub.c:5626 [inline]
 __kmalloc_node_track_caller_noprof+0x4db/0x8a0 mm/slub.c:5736
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:601
 pskb_expand_head+0x238/0x1030 net/core/skbuff.c:2241
 netlink_trim+0x22d/0x310 net/netlink/af_netlink.c:1301
 netlink_broadcast_filtered+0xf1/0xf90 net/netlink/af_netlink.c:1514
 nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
 nlmsg_multicast include/net/netlink.h:1184 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2595
 rtnl_notify net/core/rtnetlink.c:958 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4429 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4445 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4432 [inline]
 rtnetlink_event+0x177/0x1f0 net/core/rtnetlink.c:7014
 notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880550e5400: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880550e5480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880550e5500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                          ^
 ffff8880550e5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880550e5600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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