BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5229, name: kworker/u9:4
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
4 locks held by kworker/u9:4/5229:
#0: ffff88807fea9948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88807fea9948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003887d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003887d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88807f420078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xcf/0xae0 net/bluetooth/hci_event.c:6853
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0xdb/0xae0 net/bluetooth/hci_event.c:6854
CPU: 0 UID: 0 PID: 5229 Comm: kworker/u9:4 Not tainted 6.11.0-rc2-syzkaller-00302-gcb2e5ee8e7a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
__might_resched+0x5d4/0x780 kernel/sched/core.c:8463
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0xc1/0xd70 kernel/locking/mutex.c:752
hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
hci_le_create_big_complete_evt+0x3d9/0xae0 net/bluetooth/hci_event.c:6878
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7498
hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4022
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
=============================
[ BUG: Invalid wait context ]
6.11.0-rc2-syzkaller-00302-gcb2e5ee8e7a0 #0 Tainted: G W
-----------------------------
kworker/u9:4/5229 is trying to lock:
ffffffff8fdedc68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
ffffffff8fdedc68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0x3d9/0xae0 net/bluetooth/hci_event.c:6878
other info that might help us debug this:
context-{4:4}
4 locks held by kworker/u9:4/5229:
#0: ffff88807fea9948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88807fea9948 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003887d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003887d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88807f420078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xcf/0xae0 net/bluetooth/hci_event.c:6853
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#3: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0xdb/0xae0 net/bluetooth/hci_event.c:6854
stack backtrace:
CPU: 0 UID: 0 PID: 5229 Comm: kworker/u9:4 Tainted: G W 6.11.0-rc2-syzkaller-00302-gcb2e5ee8e7a0 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 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+0x153b/0x2040 kernel/locking/lockdep.c:5092
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
__mutex_lock_common kernel/locking/mutex.c:608 [inline]
__mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
hci_connect_cfm include/net/bluetooth/hci_core.h:1962 [inline]
hci_le_create_big_complete_evt+0x3d9/0xae0 net/bluetooth/hci_event.c:6878
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7498
hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4022
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
==================================================================
BUG: KASAN: slab-use-after-free in hci_le_create_big_complete_evt+0x383/0xae0
Read of size 8 at addr ffff88802b0a8000 by task kworker/u9:4/5229
CPU: 0 UID: 0 PID: 5229 Comm: kworker/u9:4 Tainted: G W 6.11.0-rc2-syzkaller-00302-gcb2e5ee8e7a0 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
hci_le_create_big_complete_evt+0x383/0xae0
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7498
hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4022
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
Allocated by task 5229:
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:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
__kmalloc_cache_noprof+0x19c/0x2c0 mm/slub.c:4189
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
__hci_conn_add+0x2f9/0x1850 net/bluetooth/hci_conn.c:934
hci_le_big_sync_established_evt+0x414/0xc20 net/bluetooth/hci_event.c:6923
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7498
hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4022
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
Freed by task 5229:
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:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 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+0x149/0x360 mm/slub.c:4594
device_release+0x99/0x1c0
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x22f/0x480 lib/kobject.c:737
hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
hci_conn_del+0x8c4/0xc40 net/bluetooth/hci_conn.c:1162
hci_le_create_big_complete_evt+0x619/0xae0 net/bluetooth/hci_event.c:6880
hci_event_func net/bluetooth/hci_event.c:7443 [inline]
hci_event_packet+0xa55/0x1540 net/bluetooth/hci_event.c:7498
hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4022
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
The buggy address belongs to the object at ffff88802b0a8000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 0 bytes inside of
freed 8192-byte region [ffff88802b0a8000, ffff88802b0aa000)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802b0ac000 pfn:0x2b0a8
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 ffff888015842280 0000000000000000 0000000000000001
raw: ffff88802b0ac000 0000000000020001 00000001fdffffff 0000000000000000
head: 00fff00000000040 ffff888015842280 0000000000000000 0000000000000001
head: ffff88802b0ac000 0000000000020001 00000001fdffffff 0000000000000000
head: 00fff00000000003 ffffea0000ac2a01 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 0x1d28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4894, tgid 4894 (dhcpcd), ts 276102206744, free_ts 275740680665
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3442
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4700
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2321
allocate_slab+0x5a/0x2f0 mm/slub.c:2484
new_slab mm/slub.c:2537 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
__slab_alloc+0x58/0xa0 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_track_caller_noprof+0x281/0x440 mm/slub.c:4177
kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
__alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
alloc_skb include/linux/skbuff.h:1320 [inline]
netlink_dump+0x1f7/0xd80 net/netlink/af_netlink.c:2291
__netlink_dump_start+0x59f/0x780 net/netlink/af_netlink.c:2440
netlink_dump_start include/linux/netlink.h:339 [inline]
rtnetlink_dump_start net/core/rtnetlink.c:6536 [inline]
rtnetlink_rcv_msg+0xb3d/0xcf0 net/core/rtnetlink.c:6603
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
page last free pid 4680 tgid 4680 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0xd22/0xea0 mm/page_alloc.c:2612
discard_slab mm/slub.c:2583 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3051
put_cpu_partial+0x17c/0x250 mm/slub.c:3126
__slab_free+0x2ea/0x3d0 mm/slub.c:4343
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
getname_flags+0xb7/0x540 fs/namei.c:139
do_sys_openat2+0xd2/0x1d0 fs/open.c:1410
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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
Memory state around the buggy address:
ffff88802b0a7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88802b0a7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802b0a8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802b0a8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802b0a8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================