BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5356, name: kworker/u33:5
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
4 locks held by kworker/u33:5/5356:
#0: ffff88804c215948 ((wq_completion)hci4#2){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003dc7d80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff88804a29c078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6853
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6854
CPU: 3 UID: 0 PID: 5356 Comm: kworker/u33:5 Not tainted 6.11.0-rc5-syzkaller-00219-g1934261d8974 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci4 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:119
__might_resched+0x3c0/0x5e0 kernel/sched/core.c:8463
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0xe2/0x9c0 kernel/locking/mutex.c:752
hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6878
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7135
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7498
hci_rx_work+0x2c6/0x1610 net/bluetooth/hci_core.c:4023
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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: Invalid wait context ]
6.11.0-rc5-syzkaller-00219-g1934261d8974 #0 Tainted: G W
-----------------------------
kworker/u33:5/5356 is trying to lock:
ffffffff8fc9bee8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
ffffffff8fc9bee8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6878
other info that might help us debug this:
context-{4:4}
4 locks held by kworker/u33:5/5356:
#0: ffff88804c215948 ((wq_completion)hci4#2){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003dc7d80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff88804a29c078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6853
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#3: ffffffff8ddb9fe0 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6854
stack backtrace:
CPU: 3 UID: 0 PID: 5356 Comm: kworker/u33:5 Tainted: G W 6.11.0-rc5-syzkaller-00219-g1934261d8974 #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: hci4 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
print_lock_invalid_wait_context kernel/locking/lockdep.c:4750 [inline]
check_wait_context kernel/locking/lockdep.c:4820 [inline]
__lock_acquire+0x13cc/0x3cb0 kernel/locking/lockdep.c:5092
lock_acquire kernel/locking/lockdep.c:5759 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
__mutex_lock_common kernel/locking/mutex.c:608 [inline]
__mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6878
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7135
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7498
hci_rx_work+0x2c6/0x1610 net/bluetooth/hci_core.c:4023
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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 hci_le_create_big_complete_evt+0xa62/0xb30 net/bluetooth/hci_event.c:6857
Read of size 8 at addr ffff88804dd7c000 by task kworker/u33:5/5356
CPU: 3 UID: 0 PID: 5356 Comm: kworker/u33:5 Tainted: G W 6.11.0-rc5-syzkaller-00219-g1934261d8974 #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: hci4 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
hci_le_create_big_complete_evt+0xa62/0xb30 net/bluetooth/hci_event.c:6857
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7135
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7498
hci_rx_work+0x2c6/0x1610 net/bluetooth/hci_core.c:4023
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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 5356:
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:370 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
__hci_conn_add+0x131/0x1a50 net/bluetooth/hci_conn.c:934
hci_conn_add+0x56/0x70 net/bluetooth/hci_conn.c:1052
hci_le_big_sync_established_evt+0x73f/0xad0 net/bluetooth/hci_event.c:6923
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7135
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7498
hci_rx_work+0x2c6/0x1610 net/bluetooth/hci_core.c:4023
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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
Freed by task 5356:
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:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x12a/0x3b0 mm/slub.c:4594
device_release+0xa1/0x240 drivers/base/core.c:2582
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e4/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3790
hci_conn_del_sysfs+0x151/0x180 net/bluetooth/hci_sysfs.c:72
hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
hci_conn_del+0x54e/0xdb0 net/bluetooth/hci_conn.c:1162
hci_le_create_big_complete_evt+0x4ba/0xb30 net/bluetooth/hci_event.c:6880
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7135
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7498
hci_rx_work+0x2c6/0x1610 net/bluetooth/hci_core.c:4023
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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
The buggy address belongs to the object at ffff88804dd7c000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 0 bytes inside of
freed 8192-byte region [ffff88804dd7c000, ffff88804dd7e000)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4dd78
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000040 ffff88801ac43180 0000000000000000 dead000000000001
raw: 0000000000000000 0000000080020002 00000001fdffffff 0000000000000000
head: 00fff00000000040 ffff88801ac43180 0000000000000000 dead000000000001
head: 0000000000000000 0000000080020002 00000001fdffffff 0000000000000000
head: 00fff00000000003 ffffea0001375e01 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5466, tgid 5461 (syz.1.14), ts 77436315222, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3439
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4695
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x4e/0xf0 mm/slub.c:2321
allocate_slab mm/slub.c:2484 [inline]
new_slab+0x84/0x260 mm/slub.c:2537
___slab_alloc+0xdac/0x1870 mm/slub.c:3723
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_node_noprof+0x357/0x430 mm/slub.c:4164
__kvmalloc_node_noprof+0x6f/0x1a0 mm/util.c:650
kvmalloc_array_node_noprof include/linux/slab.h:833 [inline]
__ptr_ring_init_queue_alloc_noprof include/linux/ptr_ring.h:471 [inline]
ptr_ring_init_noprof include/linux/ptr_ring.h:489 [inline]
skb_array_init_noprof include/linux/skb_array.h:182 [inline]
pfifo_fast_init+0x125/0x3b0 net/sched/sch_generic.c:865
qdisc_create_dflt+0x101/0x440 net/sched/sch_generic.c:1015
mqprio_init+0xe6c/0x1b50 net/sched/sch_mqprio.c:398
qdisc_create+0x4f3/0x1100 net/sched/sch_api.c:1355
tc_modify_qdisc+0x4d8/0x1c40 net/sched/sch_api.c:1777
rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6647
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2550
page_owner free stack trace missing
Memory state around the buggy address:
ffff88804dd7bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88804dd7bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88804dd7c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88804dd7c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88804dd7c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================