Bluetooth: hci3: unexpected event 0x03 length: 17 > 11
BUG: sleeping function called from invalid context at net/core/sock.c:3647
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 66, name: kworker/u33:0
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
5 locks held by kworker/u33:0/66:
 #0: ffff888022f92948 ((wq_completion)hci3#2){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
 #1: ffffc90000a27d18 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
 #2: ffff8880527a4078 (&hdev->lock){+.+.}-{4:4}, at: hci_conn_complete_evt+0xbd/0x1580 net/bluetooth/hci_event.c:3074
 #3: ffff88804a249a20 (&conn->lock#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #3: ffff88804a249a20 (&conn->lock#2){+.+.}-{3:3}, at: sco_conn_ready net/bluetooth/sco.c:1328 [inline]
 #3: ffff88804a249a20 (&conn->lock#2){+.+.}-{3:3}, at: sco_connect_cfm+0x281/0xbc0 net/bluetooth/sco.c:1415
 #4: ffff88806919f258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1624 [inline]
 #4: ffff88806919f258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1341 [inline]
 #4: ffff88806919f258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x416/0xbc0 net/bluetooth/sco.c:1415
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 3 UID: 0 PID: 66 Comm: kworker/u33:0 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci3 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8766
 lock_sock_nested+0x4b/0xf0 net/core/sock.c:3647
 lock_sock include/net/sock.h:1624 [inline]
 sco_conn_ready net/bluetooth/sco.c:1341 [inline]
 sco_connect_cfm+0x416/0xbc0 net/bluetooth/sco.c:1415
 hci_connect_cfm include/net/bluetooth/hci_core.h:2051 [inline]
 hci_conn_complete_evt+0x80d/0x1580 net/bluetooth/hci_event.c:3212
 hci_event_func net/bluetooth/hci_event.c:7473 [inline]
 hci_event_packet+0x9eb/0x1190 net/bluetooth/hci_event.c:7525
 hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4015
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 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>
==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x2d90/0x3c40 kernel/locking/lockdep.c:5091
Read of size 8 at addr ffff88806919f1d8 by task kworker/u33:0/66

CPU: 3 UID: 0 PID: 66 Comm: kworker/u33:0 Tainted: G        W          6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci3 hci_rx_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:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 __lock_acquire+0x2d90/0x3c40 kernel/locking/lockdep.c:5091
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x5f/0xf0 net/core/sock.c:3648
 lock_sock include/net/sock.h:1624 [inline]
 sco_conn_ready net/bluetooth/sco.c:1341 [inline]
 sco_connect_cfm+0x416/0xbc0 net/bluetooth/sco.c:1415
 hci_connect_cfm include/net/bluetooth/hci_core.h:2051 [inline]
 hci_conn_complete_evt+0x80d/0x1580 net/bluetooth/hci_event.c:3212
 hci_event_func net/bluetooth/hci_event.c:7473 [inline]
 hci_event_packet+0x9eb/0x1190 net/bluetooth/hci_event.c:7525
 hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4015
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 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 6006:
 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:4294 [inline]
 __kmalloc_noprof+0x21a/0x4f0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2181
 sk_alloc+0x36/0xb90 net/core/sock.c:2234
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 sco_sock_alloc net/bluetooth/sco.c:552 [inline]
 sco_sock_create+0xe3/0x3c0 net/bluetooth/sco.c:583
 bt_sock_create+0x182/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x335/0x8d0 net/socket.c:1543
 sock_create net/socket.c:1601 [inline]
 __sys_socket_create net/socket.c:1638 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1685
 __do_sys_socket net/socket.c:1699 [inline]
 __se_sys_socket net/socket.c:1697 [inline]
 __ia32_sys_socket+0x72/0xb0 net/socket.c:1697
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Freed by task 6005:
 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:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x2c4/0x4d0 mm/slub.c:4757
 sk_prot_free net/core/sock.c:2217 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2309
 sk_destruct+0xc2/0xf0 net/core/sock.c:2324
 __sk_free+0xf4/0x3e0 net/core/sock.c:2335
 sk_free+0x6a/0x90 net/core/sock.c:2346
 sock_put include/net/sock.h:1913 [inline]
 sco_sock_kill net/bluetooth/sco.c:494 [inline]
 sco_sock_kill+0x11a/0x1c0 net/bluetooth/sco.c:484
 sco_sock_release+0x154/0x2d0 net/bluetooth/sco.c:1310
 __sock_release+0xb0/0x270 net/socket.c:642
 sock_close+0x1c/0x30 net/socket.c:1393
 __fput+0x3ff/0xb70 fs/file_table.c:448
 task_work_run+0x14e/0x250 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 __do_fast_syscall_32+0x80/0x120 arch/x86/entry/common.c:389
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

The buggy address belongs to the object at ffff88806919f000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 472 bytes inside of
 freed 2048-byte region [ffff88806919f000, ffff88806919f800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x69198
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801b042f00 0000000000000000 0000000000000001
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000040 ffff88801b042f00 0000000000000000 0000000000000001
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000003 ffffea0001a46601 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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 235, tgid 235 (kworker/u32:5), ts 46668841670, free_ts 0
 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:4739
 alloc_pages_mpol+0x1fc/0x540 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2587 [inline]
 new_slab+0x23d/0x330 mm/slub.c:2640
 ___slab_alloc+0xbfa/0x1600 mm/slub.c:3826
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_node_track_caller_noprof+0x2ee/0x520 mm/slub.c:4313
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 __alloc_skb+0x164/0x380 net/core/skbuff.c:678
 alloc_skb include/linux/skbuff.h:1331 [inline]
 nlmsg_new include/net/netlink.h:1018 [inline]
 inet6_ifinfo_notify+0x77/0x150 net/ipv6/addrconf.c:6158
 addrconf_notify+0x81a/0x19c0 net/ipv6/addrconf.c:3756
 notifier_call_chain+0xb7/0x410 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2141
 netdev_state_change net/core/dev.c:1506 [inline]
 netdev_state_change+0x115/0x150 net/core/dev.c:1499
 linkwatch_do_dev+0x12b/0x160 net/core/link_watch.c:186
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88806919f080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88806919f100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88806919f180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88806919f200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88806919f280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================