BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5957, name: kworker/u33:5
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
4 locks held by kworker/u33:5/5957:
#0: ffff888030794948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000562fd80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888035c70078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6850
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6851
CPU: 3 UID: 0 PID: 5957 Comm: kworker/u33:5 Not tainted 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci0 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:8653
__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:1957 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6875
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7132
hci_event_func net/bluetooth/hci_event.c:7440 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7495
hci_rx_work+0x2c6/0x16c0 net/bluetooth/hci_core.c:4031
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: Invalid wait context ]
6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #0 Tainted: G W
-----------------------------
kworker/u33:5/5957 is trying to lock:
ffffffff9014bc68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline]
ffffffff9014bc68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6875
other info that might help us debug this:
context-{4:4}
4 locks held by kworker/u33:5/5957:
#0: ffff888030794948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000562fd80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888035c70078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6850
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6851
stack backtrace:
CPU: 3 UID: 0 PID: 5957 Comm: kworker/u33:5 Tainted: G W 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #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: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4802 [inline]
check_wait_context kernel/locking/lockdep.c:4874 [inline]
__lock_acquire+0x13db/0x3ce0 kernel/locking/lockdep.c:5152
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
__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:1957 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6875
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7132
hci_event_func net/bluetooth/hci_event.c:7440 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7495
hci_rx_work+0x2c6/0x16c0 net/bluetooth/hci_core.c:4031
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 hci_le_create_big_complete_evt+0xa62/0xb30 net/bluetooth/hci_event.c:6854
Read of size 8 at addr ffff88804ea58000 by task kworker/u33:5/5957
CPU: 2 UID: 0 PID: 5957 Comm: kworker/u33:5 Tainted: G W 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #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: hci0 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: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:6854
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7132
hci_event_func net/bluetooth/hci_event.c:7440 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7495
hci_rx_work+0x2c6/0x16c0 net/bluetooth/hci_core.c:4031
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 5957:
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
kmalloc_noprof include/linux/slab.h:878 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
__hci_conn_add+0x131/0x1a50 net/bluetooth/hci_conn.c:935
hci_conn_add+0x56/0x70 net/bluetooth/hci_conn.c:1053
hci_le_big_sync_established_evt+0x73f/0xad0 net/bluetooth/hci_event.c:6920
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7132
hci_event_func net/bluetooth/hci_event.c:7440 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7495
hci_rx_work+0x2c6/0x16c0 net/bluetooth/hci_core.c:4031
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
Freed by task 5957:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
device_release+0xa1/0x240 drivers/base/core.c:2575
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:3783
hci_conn_del_sysfs+0x151/0x180 net/bluetooth/hci_sysfs.c:72
hci_conn_cleanup net/bluetooth/hci_conn.c:174 [inline]
hci_conn_del+0x54e/0xdb0 net/bluetooth/hci_conn.c:1163
hci_le_create_big_complete_evt+0x4ba/0xb30 net/bluetooth/hci_event.c:6877
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7132
hci_event_func net/bluetooth/hci_event.c:7440 [inline]
hci_event_packet+0x666/0x1180 net/bluetooth/hci_event.c:7495
hci_rx_work+0x2c6/0x16c0 net/bluetooth/hci_core.c:4031
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
The buggy address belongs to the object at ffff88804ea58000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 0 bytes inside of
freed 8192-byte region [ffff88804ea58000, ffff88804ea5a000)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4ea58
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 ffff88801b043180 ffffea000083ce00 0000000000000002
raw: 0000000000000000 0000000080020002 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b043180 ffffea000083ce00 0000000000000002
head: 0000000000000000 0000000080020002 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00013a9601 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 6079, tgid 6077 (syz.2.19), ts 48568112094, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x101e/0x3070 mm/page_alloc.c:3457
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2ba/0x3f0 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:878 [inline]
audit_log_d_path+0xce/0x1e0 kernel/audit.c:2148
dump_common_audit_data security/lsm_audit.c:237 [inline]
common_lsm_audit+0x3d3/0x2210 security/lsm_audit.c:458
slow_avc_audit+0x17d/0x210 security/selinux/avc.c:773
avc_audit security/selinux/include/avc.h:127 [inline]
avc_has_perm+0x18d/0x1c0 security/selinux/avc.c:1191
selinux_bprm_creds_for_exec+0x9e6/0xc40 security/selinux/hooks.c:2359
security_bprm_creds_for_exec+0x1b9/0x1e0 security/security.c:1256
bprm_execve fs/exec.c:1841 [inline]
bprm_execve+0x474/0x1960 fs/exec.c:1821
do_execveat_common.isra.0+0x4f1/0x630 fs/exec.c:1952
page_owner free stack trace missing
Memory state around the buggy address:
ffff88804ea57f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88804ea57f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88804ea58000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88804ea58080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88804ea58100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================