BUG: sleeping function called from invalid context at net/core/sock.c:3545
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5130, name: kworker/u9:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
6 locks held by kworker/u9:2/5130:
 #0: ffff888029b2c948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888029b2c948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90002f1fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90002f1fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff888023898078 (&hdev->lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0xb1/0xaa0 net/bluetooth/hci_event.c:4925
 #3: ffffffff8f769ee8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
 #3: ffffffff8f769ee8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x532/0xaa0 net/bluetooth/hci_event.c:5008
 #4: ffff888020917620 (&conn->lock#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #4: ffff888020917620 (&conn->lock#2){+.+.}-{2:2}, at: sco_conn_ready net/bluetooth/sco.c:1277 [inline]
 #4: ffff888020917620 (&conn->lock#2){+.+.}-{2:2}, at: sco_connect_cfm+0x28a/0xb40 net/bluetooth/sco.c:1362
 #5: ffff88802358b258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1607 [inline]
 #5: ffff88802358b258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 #5: ffff88802358b258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5130 Comm: kworker/u9:2 Not tainted 6.10.0-syzkaller-09703-gd7e78951a8b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 __might_resched+0x5d4/0x780 kernel/sched/core.c:8437
 lock_sock_nested+0x5d/0x100 net/core/sock.c:3545
 lock_sock include/net/sock.h:1607 [inline]
 sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
 hci_connect_cfm include/net/bluetooth/hci_core.h:1965 [inline]
 hci_sync_conn_complete_evt+0x5ad/0xaa0 net/bluetooth/hci_event.c:5008
 hci_event_func net/bluetooth/hci_event.c:7445 [inline]
 hci_event_packet+0xac4/0x1540 net/bluetooth/hci_event.c:7497
 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4029
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2040 kernel/locking/lockdep.c:5007
Read of size 8 at addr ffff88802358b1d8 by task kworker/u9:2/5130

CPU: 1 PID: 5130 Comm: kworker/u9:2 Tainted: G        W          6.10.0-syzkaller-09703-gd7e78951a8b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __lock_acquire+0x77/0x2040 kernel/locking/lockdep.c:5007
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x6a/0x100 net/core/sock.c:3546
 lock_sock include/net/sock.h:1607 [inline]
 sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
 hci_connect_cfm include/net/bluetooth/hci_core.h:1965 [inline]
 hci_sync_conn_complete_evt+0x5ad/0xaa0 net/bluetooth/hci_event.c:5008
 hci_event_func net/bluetooth/hci_event.c:7445 [inline]
 hci_event_packet+0xac4/0x1540 net/bluetooth/hci_event.c:7497
 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4029
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 5154:
 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:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4149 [inline]
 __kmalloc_noprof+0x1fc/0x400 mm/slub.c:4161
 kmalloc_noprof include/linux/slab.h:685 [inline]
 sk_prot_alloc+0xe0/0x210 net/core/sock.c:2096
 sk_alloc+0x38/0x370 net/core/sock.c:2149
 bt_sock_alloc+0x3c/0x340 net/bluetooth/af_bluetooth.c:148
 sco_sock_alloc net/bluetooth/sco.c:500 [inline]
 sco_sock_create+0xbb/0x390 net/bluetooth/sco.c:531
 bt_sock_create+0x163/0x230 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x492/0x920 net/socket.c:1571
 sock_create net/socket.c:1622 [inline]
 __sys_socket_create net/socket.c:1659 [inline]
 __sys_socket+0x150/0x3c0 net/socket.c:1706
 __do_sys_socket net/socket.c:1720 [inline]
 __se_sys_socket net/socket.c:1718 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1718
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5154:
 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:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2235 [inline]
 slab_free mm/slub.c:4464 [inline]
 kfree+0x149/0x360 mm/slub.c:4585
 sk_prot_free net/core/sock.c:2132 [inline]
 __sk_destruct+0x476/0x5f0 net/core/sock.c:2224
 sco_sock_release+0x25e/0x320 net/bluetooth/sco.c:1259
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbe/0x240 net/socket.c:1421
 __fput+0x24c/0x8a0 fs/file_table.c:422
 __do_sys_close fs/open.c:1566 [inline]
 __se_sys_close fs/open.c:1551 [inline]
 __x64_sys_close+0x7f/0x110 fs/open.c:1551
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802358b000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 472 bytes inside of
 freed 2048-byte region [ffff88802358b000, ffff88802358b800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x23588
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000040 ffff888015042000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000080008 00000001ffffefff 0000000000000000
head: 00fff00000000040 ffff888015042000 dead000000000122 0000000000000000
head: 0000000000000000 0000000000080008 00000001ffffefff 0000000000000000
head: 00fff00000000003 ffffea00008d6201 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 11, tgid 11 (kworker/u8:0), ts 205999619755, free_ts 202548812379
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2304
 allocate_slab+0x5a/0x2f0 mm/slub.c:2467
 new_slab mm/slub.c:2520 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3706
 __slab_alloc+0x58/0xa0 mm/slub.c:3796
 __slab_alloc_node mm/slub.c:3849 [inline]
 slab_alloc_node mm/slub.c:4016 [inline]
 __do_kmalloc_node mm/slub.c:4148 [inline]
 __kmalloc_node_track_caller_noprof+0x281/0x440 mm/slub.c:4168
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4070
 unregister_netdevice_many_notify+0xe24/0x1c40 net/core/dev.c:11347
 cleanup_net+0x75d/0xcc0 net/core/net_namespace.c:635
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f2/0x390 kernel/kthread.c:389
page last free pid 5111 tgid 5111 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1093 [inline]
 free_unref_page+0xd22/0xea0 mm/page_alloc.c:2588
 __slab_free+0x31b/0x3d0 mm/slub.c:4375
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3979 [inline]
 slab_alloc_node mm/slub.c:4028 [inline]
 kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4071
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:664
 alloc_skb_fclone include/linux/skbuff.h:1370 [inline]
 tcp_stream_alloc_skb+0x3d/0x310 net/ipv4/tcp.c:882
 tcp_sendmsg_locked+0xd6a/0x4e10 net/ipv4/tcp.c:1164
 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1354
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x1a6/0x270 net/socket.c:745
 sock_write_iter+0x2dd/0x400 net/socket.c:1160
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa74/0xc90 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802358b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802358b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802358b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88802358b200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802358b280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================