=========================
WARNING: held lock freed!
syzkaller #0 Tainted: G L
-------------------------
syz.6.3016/29565 is freeing memory ffff888022db9000-ffff888022db97ff, with a lock still held there!
ffff888022db9260 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1709 [inline]
ffff888022db9260 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}-{0:0}, at: bt_accept_dequeue+0x244/0x690 net/bluetooth/af_bluetooth.c:279
3 locks held by syz.6.3016/29565:
#0: ffff888055004708 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#0: ffff888055004708 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: __sock_release+0x86/0x260 net/socket.c:661
#1: ffff88803c78b260 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP/2){+.+.}-{0:0}, at: l2cap_sock_release+0x61/0x280 net/bluetooth/l2cap_sock.c:1450
#2: ffff888022db9260 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1709 [inline]
#2: ffff888022db9260 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}-{0:0}, at: bt_accept_dequeue+0x244/0x690 net/bluetooth/af_bluetooth.c:279
stack backtrace:
CPU: 1 UID: 0 PID: 29565 Comm: syz.6.3016 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_freed_lock_bug kernel/locking/lockdep.c:6693 [inline]
debug_check_no_locks_freed+0x115/0x120 kernel/locking/lockdep.c:6728
slab_free_hook mm/slub.c:2613 [inline]
slab_free mm/slub.c:6165 [inline]
kfree+0x18b/0x6b0 mm/slub.c:6483
sk_prot_free net/core/sock.c:2284 [inline]
__sk_destruct+0x8ab/0xbb0 net/core/sock.c:2384
sk_destruct+0xc8/0xf0 net/core/sock.c:2412
__sk_free+0xf4/0x3e0 net/core/sock.c:2423
sk_free+0x61/0x90 net/core/sock.c:2434
sock_put include/net/sock.h:2007 [inline]
bt_accept_unlink+0x1e4/0x2f0 net/bluetooth/af_bluetooth.c:262
bt_accept_dequeue+0x576/0x690 net/bluetooth/af_bluetooth.c:308
l2cap_sock_cleanup_listen+0x5c/0x2d0 net/bluetooth/l2cap_sock.c:1479
l2cap_sock_release+0x69/0x280 net/bluetooth/l2cap_sock.c:1451
__sock_release+0xb3/0x260 net/socket.c:662
sock_close+0x1c/0x30 net/socket.c:1455
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x100/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f08c739c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc840c3828 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f08c7617da0 RCX: 00007f08c739c799
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f08c7617da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f08c7617cb0 R11: 0000000000000246 R12: 0000000000051dec
R13: 00007f08c761609c R14: 0000000000051b3a R15: 00007f08c7616090
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x23b/0x260 kernel/locking/spinlock_debug.c:115
Read of size 4 at addr ffff888022db91cc by task syz.6.3016/29565
CPU: 1 UID: 0 PID: 29565 Comm: syz.6.3016 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x156/0x4c9 mm/kasan/report.c:482
kasan_report+0xdf/0x1e0 mm/kasan/report.c:595
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x23b/0x260 kernel/locking/spinlock_debug.c:115
spin_lock_bh include/linux/spinlock.h:347 [inline]
release_sock+0x21/0x220 net/core/sock.c:3793
bt_accept_dequeue+0x564/0x690 net/bluetooth/af_bluetooth.c:312
l2cap_sock_cleanup_listen+0x5c/0x2d0 net/bluetooth/l2cap_sock.c:1479
l2cap_sock_release+0x69/0x280 net/bluetooth/l2cap_sock.c:1451
__sock_release+0xb3/0x260 net/socket.c:662
sock_close+0x1c/0x30 net/socket.c:1455
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x100/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f08c739c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc840c3828 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f08c7617da0 RCX: 00007f08c739c799
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f08c7617da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f08c7617cb0 R11: 0000000000000246 R12: 0000000000051dec
R13: 00007f08c761609c R14: 0000000000051b3a R15: 00007f08c7616090
Allocated by task 5939:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5260 [inline]
__kmalloc_noprof+0x301/0x850 mm/slub.c:5272
kmalloc_noprof include/linux/slab.h:954 [inline]
sk_prot_alloc+0x10b/0x2a0 net/core/sock.c:2245
sk_alloc+0x36/0xe80 net/core/sock.c:2301
bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:151
l2cap_sock_alloc.constprop.0+0x33/0x1e0 net/bluetooth/l2cap_sock.c:1922
l2cap_sock_new_connection_cb+0x101/0x260 net/bluetooth/l2cap_sock.c:1510
l2cap_connect_cfm+0x4e2/0x1050 net/bluetooth/l2cap_core.c:7351
hci_connect_cfm include/net/bluetooth/hci_core.h:2139 [inline]
hci_remote_features_evt+0x4f4/0x9b0 net/bluetooth/hci_event.c:3754
hci_event_func net/bluetooth/hci_event.c:7784 [inline]
hci_event_packet+0xa86/0x11c0 net/bluetooth/hci_event.c:7838
hci_rx_work+0x451/0xfc0 net/bluetooth/hci_core.c:4077
process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
process_scheduled_works kernel/workqueue.c:3359 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 29565:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2685 [inline]
slab_free mm/slub.c:6165 [inline]
kfree+0x1f6/0x6b0 mm/slub.c:6483
sk_prot_free net/core/sock.c:2284 [inline]
__sk_destruct+0x8ab/0xbb0 net/core/sock.c:2384
sk_destruct+0xc8/0xf0 net/core/sock.c:2412
__sk_free+0xf4/0x3e0 net/core/sock.c:2423
sk_free+0x61/0x90 net/core/sock.c:2434
sock_put include/net/sock.h:2007 [inline]
bt_accept_unlink+0x1e4/0x2f0 net/bluetooth/af_bluetooth.c:262
bt_accept_dequeue+0x576/0x690 net/bluetooth/af_bluetooth.c:308
l2cap_sock_cleanup_listen+0x5c/0x2d0 net/bluetooth/l2cap_sock.c:1479
l2cap_sock_release+0x69/0x280 net/bluetooth/l2cap_sock.c:1451
__sock_release+0xb3/0x260 net/socket.c:662
sock_close+0x1c/0x30 net/socket.c:1455
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x100/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff888022db9000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 460 bytes inside of
freed 2048-byte region [ffff888022db9000, ffff888022db9800)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x22db8
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: f5(slab)
raw: 00fff00000000040 ffff88801b842f00 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800080008 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b842f00 dead000000000100 dead000000000122
head: 0000000000000000 0000000800080008 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea00008b6e01 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 2826492114, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5250
alloc_slab_page mm/slub.c:3292 [inline]
allocate_slab mm/slub.c:3481 [inline]
new_slab+0xa6/0x6b0 mm/slub.c:3539
refill_objects+0x26b/0x400 mm/slub.c:7175
refill_sheaf mm/slub.c:2812 [inline]
__pcs_replace_empty_main+0x1ab/0x660 mm/slub.c:4615
alloc_from_pcs mm/slub.c:4717 [inline]
slab_alloc_node mm/slub.c:4851 [inline]
__kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5375
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
acpi_ds_create_walk_state+0x95/0x300 drivers/acpi/acpica/dswstate.c:518
acpi_ds_call_control_method+0x226/0xab0 drivers/acpi/acpica/dsmethod.c:511
acpi_ps_parse_aml+0xacd/0x1120 drivers/acpi/acpica/psparse.c:503
acpi_ps_execute_method+0x5c4/0xe90 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x640/0x1670 drivers/acpi/acpica/nseval.c:205
acpi_ut_evaluate_object+0xf7/0x610 drivers/acpi/acpica/uteval.c:60
acpi_rs_get_method_data+0xa1/0x160 drivers/acpi/acpica/rsutils.c:650
acpi_walk_resources+0x178/0x270 drivers/acpi/acpica/rsxface.c:616
__acpi_dev_get_resources drivers/acpi/resource.c:966 [inline]
acpi_dev_get_resources+0x1d2/0x260 drivers/acpi/resource.c:1004
page_owner free stack trace missing
Memory state around the buggy address:
ffff888022db9080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888022db9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888022db9180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888022db9200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888022db9280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================