======================================================
WARNING: possible circular locking dependency detected
6.12.0-syzkaller-10724-gaf8edaeddbc5 #0 Not tainted
------------------------------------------------------
syz-executor113/5976 is trying to acquire lock:
ffff88807e410078 (&hdev->lock){+.+.}-{4:4}, at: mgmt_remove_adv_monitor_complete+0xaf/0x550 net/bluetooth/mgmt.c:5524

but task is already holding lock:
ffff88807e410690 (&hdev->cmd_sync_work_lock){+.+.}-{4:4}, at: hci_cmd_sync_dequeue+0x44/0x3d0 net/bluetooth/hci_sync.c:887

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&hdev->cmd_sync_work_lock){+.+.}-{4:4}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
       hci_cmd_sync_lookup_entry net/bluetooth/hci_sync.c:838 [inline]
       hci_cmd_sync_queue_once+0x43/0x240 net/bluetooth/hci_sync.c:782
       le_conn_complete_evt+0xae1/0x12e0 net/bluetooth/hci_event.c:5778
       hci_le_conn_complete_evt+0x18c/0x420 net/bluetooth/hci_event.c:5789
       hci_event_func net/bluetooth/hci_event.c:7481 [inline]
       hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7536
       hci_rx_work+0x3f3/0xdb0 net/bluetooth/hci_core.c:4039
       process_one_work kernel/workqueue.c:3229 [inline]
       process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
       worker_thread+0x870/0xd30 kernel/workqueue.c:3391
       kthread+0x2f0/0x390 kernel/kthread.c:389
       ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

-> #0 (&hdev->lock){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
       mgmt_remove_adv_monitor_complete+0xaf/0x550 net/bluetooth/mgmt.c:5524
       _hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:645 [inline]
       hci_cmd_sync_dequeue+0x22b/0x3d0 net/bluetooth/hci_sync.c:890
       cmd_complete_rsp+0x4c/0x180 net/bluetooth/mgmt.c:1469
       mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
       mgmt_index_removed+0x133/0x390 net/bluetooth/mgmt.c:9483
       hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307
       __sys_bind_socket net/socket.c:1827 [inline]
       __sys_bind+0x1e4/0x290 net/socket.c:1858
       __do_sys_bind net/socket.c:1863 [inline]
       __se_sys_bind net/socket.c:1861 [inline]
       __x64_sys_bind+0x7a/0x90 net/socket.c:1861
       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

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&hdev->cmd_sync_work_lock);
                               lock(&hdev->lock);
                               lock(&hdev->cmd_sync_work_lock);
  lock(&hdev->lock);

 *** DEADLOCK ***

2 locks held by syz-executor113/5976:
 #0: ffff88807cc4e258 (sk_lock-AF_BLUETOOTH-BTPROTO_HCI){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1617 [inline]
 #0: ffff88807cc4e258 (sk_lock-AF_BLUETOOTH-BTPROTO_HCI){+.+.}-{0:0}, at: hci_sock_bind+0x149/0x1150 net/bluetooth/hci_sock.c:1202
 #1: ffff88807e410690 (&hdev->cmd_sync_work_lock){+.+.}-{4:4}, at: hci_cmd_sync_dequeue+0x44/0x3d0 net/bluetooth/hci_sync.c:887

stack backtrace:
CPU: 1 UID: 0 PID: 5976 Comm: syz-executor113 Not tainted 6.12.0-syzkaller-10724-gaf8edaeddbc5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
 mgmt_remove_adv_monitor_complete+0xaf/0x550 net/bluetooth/mgmt.c:5524
 _hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:645 [inline]
 hci_cmd_sync_dequeue+0x22b/0x3d0 net/bluetooth/hci_sync.c:890
 cmd_complete_rsp+0x4c/0x180 net/bluetooth/mgmt.c:1469
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x133/0x390 net/bluetooth/mgmt.c:9483
 hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind+0x1e4/0x290 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1861
 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
RIP: 0033:0x7fd2aec88919
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 19 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd1e4986f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 000000000001230b RCX: 00007fd2aec88919
RDX: 0000000000000006 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fd2aec42990 R09: 00007fd2aec42990
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd1e49871c
R13: 00007ffd1e498750 R14: 00007ffd1e498730 R15: 0000000000000016
 </TASK>
==================================================================
BUG: KASAN: slab-use-after-free in cmd_complete_rsp+0x67/0x180 net/bluetooth/mgmt.c:1471
Read of size 8 at addr ffff88814179c1c0 by task syz-executor113/5976

CPU: 0 UID: 0 PID: 5976 Comm: syz-executor113 Not tainted 6.12.0-syzkaller-10724-gaf8edaeddbc5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:378 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:489
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 cmd_complete_rsp+0x67/0x180 net/bluetooth/mgmt.c:1471
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x133/0x390 net/bluetooth/mgmt.c:9483
 hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind+0x1e4/0x290 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1861
 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
RIP: 0033:0x7fd2aec88919
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 19 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd1e4986f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 000000000001230b RCX: 00007fd2aec88919
RDX: 0000000000000006 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fd2aec42990 R09: 00007fd2aec42990
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd1e49871c
R13: 00007ffd1e498750 R14: 00007ffd1e498730 R15: 0000000000000016
 </TASK>

Allocated by task 5975:
 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+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4314
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 mgmt_pending_new+0x65/0x250 net/bluetooth/mgmt_util.c:269
 mgmt_pending_add+0x36/0x120 net/bluetooth/mgmt_util.c:296
 remove_adv_monitor+0x102/0x1b0 net/bluetooth/mgmt.c:5568
 hci_mgmt_cmd+0xc47/0x11d0 net/bluetooth/hci_sock.c:1712
 hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:726
 sock_write_iter+0x2d7/0x3f0 net/socket.c:1147
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xaeb/0xd30 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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 5976:
 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:582
 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:2338 [inline]
 slab_free mm/slub.c:4598 [inline]
 kfree+0x196/0x420 mm/slub.c:4746
 mgmt_remove_adv_monitor_complete+0x2bf/0x550 net/bluetooth/mgmt.c:5533
 _hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:645 [inline]
 hci_cmd_sync_dequeue+0x22b/0x3d0 net/bluetooth/hci_sync.c:890
 cmd_complete_rsp+0x4c/0x180 net/bluetooth/mgmt.c:1469
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x133/0x390 net/bluetooth/mgmt.c:9483
 hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind+0x1e4/0x290 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1861
 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 ffff88814179c180
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 64 bytes inside of
 freed 96-byte region [ffff88814179c180, ffff88814179c1e0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14179c
anon flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000000 ffff88801ac41280 ffffea000506db00 dead000000000005
raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x252800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_THISNODE), pid 1, tgid 1 (swapper/0), ts 9565106932, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_slab_page+0x59/0x140 mm/slub.c:2410
 allocate_slab+0x5a/0x2f0 mm/slub.c:2574
 new_slab mm/slub.c:2627 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3815
 __slab_alloc+0x58/0xa0 mm/slub.c:3905
 __slab_alloc_node mm/slub.c:3980 [inline]
 slab_alloc_node mm/slub.c:4141 [inline]
 __kmalloc_cache_node_noprof+0x294/0x3a0 mm/slub.c:4322
 kmalloc_node_noprof include/linux/slab.h:924 [inline]
 alloc_node_nr_active kernel/workqueue.c:4859 [inline]
 __alloc_workqueue+0x709/0x1f20 kernel/workqueue.c:5712
 alloc_workqueue+0xd6/0x210 kernel/workqueue.c:5772
 bond_init+0xd5/0x7b0 drivers/net/bonding/bond_main.c:6484
 register_netdevice+0x6d7/0x1b00 net/core/dev.c:10520
 bond_create+0xa5/0x110 drivers/net/bonding/bond_main.c:6536
 bonding_init+0xa6/0x110 drivers/net/bonding/bond_main.c:6635
 do_one_initcall+0x248/0x880 init/main.c:1266
 do_initcall_level+0x157/0x210 init/main.c:1328
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88814179c080: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc
 ffff88814179c100: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88814179c180: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
                                           ^
 ffff88814179c200: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff88814179c280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================