BUG: sleeping function called from invalid context at net/core/sock.c:3624
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5941, name: kworker/u33:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
5 locks held by kworker/u33:2/5941:
#0: ffff888024c12948 ((wq_completion)hci3#2){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90003f5fd80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88802893c078 (
&hdev->lock
){+.+.}-{4:4}, at: hci_sync_conn_complete_evt+0x199/0xa80 net/bluetooth/hci_event.c:4931
#3: ffff888029604420 (&conn->lock#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#3: ffff888029604420 (&conn->lock#2){+.+.}-{3:3}, at: sco_conn_ready net/bluetooth/sco.c:1328 [inline]
#3: ffff888029604420 (&conn->lock#2){+.+.}-{3:3}, at: sco_connect_cfm+0x29f/0xc00 net/bluetooth/sco.c:1415
#4: ffff88802b63e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1617 [inline]
#4: ffff88802b63e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1341 [inline]
#4: ffff88802b63e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x3bc/0xc00 net/bluetooth/sco.c:1415
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 3 UID: 0 PID: 5941 Comm: kworker/u33:2 Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #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:
__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:8758
lock_sock_nested+0x4b/0xf0 net/core/sock.c:3624
lock_sock include/net/sock.h:1617 [inline]
sco_conn_ready net/bluetooth/sco.c:1341 [inline]
sco_connect_cfm+0x3bc/0xc00 net/bluetooth/sco.c:1415
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
hci_sync_conn_complete_evt+0x421/0xa80 net/bluetooth/hci_event.c:5014
hci_event_func net/bluetooth/hci_event.c:7473 [inline]
hci_event_packet+0x9eb/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x2d90/0x3c40 kernel/locking/lockdep.c:5089
Read of size 8 at addr ffff88802b63e1d8 by task kworker/u33:2/5941
CPU: 3 UID: 0 PID: 5941 Comm: kworker/u33:2 Tainted: G W 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #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:
__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:5089
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__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:3625
lock_sock include/net/sock.h:1617 [inline]
sco_conn_ready net/bluetooth/sco.c:1341 [inline]
sco_connect_cfm+0x3bc/0xc00 net/bluetooth/sco.c:1415
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
hci_sync_conn_complete_evt+0x421/0xa80 net/bluetooth/hci_event.c:5014
hci_event_func net/bluetooth/hci_event.c:7473 [inline]
hci_event_packet+0x9eb/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 6011:
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:4298 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2165
sk_alloc+0x36/0xb90 net/core/sock.c:2218
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:1558
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6011:
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:582
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:4613 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4761
sk_prot_free net/core/sock.c:2201 [inline]
__sk_destruct+0x5eb/0x720 net/core/sock.c:2293
sk_destruct+0xc2/0xf0 net/core/sock.c:2308
__sk_free+0xf4/0x3e0 net/core/sock.c:2319
sk_free+0x6a/0x90 net/core/sock.c:2330
sock_put include/net/sock.h:1904 [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:640
sock_close+0x1c/0x30 net/socket.c:1408
__fput+0x3f8/0xb60 fs/file_table.c:450
__fput_sync+0xa1/0xc0 fs/file_table.c:535
__do_sys_close fs/open.c:1554 [inline]
__se_sys_close fs/open.c:1539 [inline]
__x64_sys_close+0x86/0x100 fs/open.c:1539
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff88802b63e000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 472 bytes inside of
freed 2048-byte region [ffff88802b63e000, ffff88802b63e800)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b638
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 ffff88801b042f00 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042f00 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea0000ad8e01 ffffffffffffffff 0000000000000000
head: ffff888000000008 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 5934, tgid 5934 (syz-executor267), ts 45292128587, free_ts 42226222516
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__do_kmalloc_node mm/slub.c:4297 [inline]
__kmalloc_noprof+0x2ec/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ops_init+0x77/0x5f0 net/core/net_namespace.c:128
setup_net+0x21f/0x860 net/core/net_namespace.c:362
copy_net_ns+0x2b4/0x6c0 net/core/net_namespace.c:516
create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
ksys_unshare+0x45d/0xa40 kernel/fork.c:3334
__do_sys_unshare kernel/fork.c:3405 [inline]
__se_sys_unshare kernel/fork.c:3403 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3403
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
page last free pid 5920 tgid 5920 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2657
__put_partials+0x14c/0x170 mm/slub.c:3157
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
kmem_cache_alloc_noprof+0x226/0x3d0 mm/slub.c:4175
getname_flags.part.0+0x4c/0x550 fs/namei.c:139
getname_flags+0x93/0xf0 include/linux/audit.h:322
user_path_at+0x24/0x60 fs/namei.c:3069
__do_sys_chroot fs/open.c:596 [inline]
__se_sys_chroot fs/open.c:590 [inline]
__x64_sys_chroot+0xbf/0x340 fs/open.c:590
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff88802b63e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802b63e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802b63e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802b63e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802b63e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================