BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5208, name: kworker/u33:5
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
4 locks held by kworker/u33:5/5208:
#0: ffff888029b6c148 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc900033d7d80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
#2: ffff88804379c078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6939
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6940
CPU: 3 PID: 5208 Comm: kworker/u33:5 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:114
__might_resched+0x3c0/0x5e0 kernel/sched/core.c:10197
__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:2004 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6964
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7228
hci_event_func net/bluetooth/hci_event.c:7539 [inline]
hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7594
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4171
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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 ]
6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0 Tainted: G W
-----------------------------
kworker/u33:5/5208 is trying to lock:
ffffffff8f55d248 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2004 [inline]
ffffffff8f55d248 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6964
other info that might help us debug this:
context-{4:4}
4 locks held by kworker/u33:5/5208:
#0: ffff888029b6c148 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc900033d7d80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
#2: ffff88804379c078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xde/0xb30 net/bluetooth/hci_event.c:6939
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#3: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: hci_le_create_big_complete_evt+0x100/0xb30 net/bluetooth/hci_event.c:6940
stack backtrace:
CPU: 3 PID: 5208 Comm: kworker/u33:5 Tainted: G W 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_lock_invalid_wait_context kernel/locking/lockdep.c:4751 [inline]
check_wait_context kernel/locking/lockdep.c:4821 [inline]
__lock_acquire+0x811/0x3b30 kernel/locking/lockdep.c:5087
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__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:2004 [inline]
hci_le_create_big_complete_evt+0x387/0xb30 net/bluetooth/hci_event.c:6964
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7228
hci_event_func net/bluetooth/hci_event.c:7539 [inline]
hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7594
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4171
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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:6943
Read of size 8 at addr ffff888045258000 by task kworker/u33:5/5208
CPU: 3 PID: 5208 Comm: kworker/u33:5 Tainted: G W 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
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:6943
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7228
hci_event_func net/bluetooth/hci_event.c:7539 [inline]
hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7594
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4171
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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 5208:
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 include/linux/slab.h:628 [inline]
kzalloc include/linux/slab.h:749 [inline]
hci_conn_add+0xb9/0x1620 net/bluetooth/hci_conn.c:914
hci_le_big_sync_established_evt+0x7e3/0xa30 net/bluetooth/hci_event.c:7005
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7228
hci_event_func net/bluetooth/hci_event.c:7539 [inline]
hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7594
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4171
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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 5208:
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:240 [inline]
__kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2106 [inline]
slab_free mm/slub.c:4280 [inline]
kfree+0x129/0x390 mm/slub.c:4390
device_release+0xa1/0x240 drivers/base/core.c:2580
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1fa/0x5b0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3828
hci_conn_del_sysfs+0x151/0x180 net/bluetooth/hci_sysfs.c:72
hci_conn_cleanup net/bluetooth/hci_conn.c:176 [inline]
hci_conn_del+0x558/0xe00 net/bluetooth/hci_conn.c:1126
hci_le_create_big_complete_evt+0x4ba/0xb30 net/bluetooth/hci_event.c:6966
hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7228
hci_event_func net/bluetooth/hci_event.c:7539 [inline]
hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7594
hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4171
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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 ffff888045258000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 0 bytes inside of
freed 8192-byte region [ffff888045258000, ffff88804525a000)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x45258
head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0xfff80000000840(slab|head|node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000840 ffff888015043180 ffffea0000f49800 0000000000000005
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
head: 00fff80000000840 ffff888015043180 ffffea0000f49800 0000000000000005
head: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
head: 00fff80000000003 ffffea0001149601 ffffea0001149648 00000000ffffffff
head: 0000000800000000 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 5211, tgid 5211 (syz-executor.0), ts 53345124647, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534
prep_new_page mm/page_alloc.c:1541 [inline]
get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317
__alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page mm/slub.c:2175 [inline]
allocate_slab mm/slub.c:2338 [inline]
new_slab+0xcc/0x3a0 mm/slub.c:2391
___slab_alloc+0x66d/0x1790 mm/slub.c:3525
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
__slab_alloc_node mm/slub.c:3663 [inline]
slab_alloc_node mm/slub.c:3835 [inline]
kmalloc_trace+0x2fb/0x330 mm/slub.c:3992
kmalloc include/linux/slab.h:628 [inline]
kzalloc include/linux/slab.h:749 [inline]
mr_table_alloc+0x5f/0x2e0 net/ipv4/ipmr_base.c:41
ip6mr_new_table net/ipv6/ip6mr.c:389 [inline]
ip6mr_new_table net/ipv6/ip6mr.c:381 [inline]
ip6mr_rules_init net/ipv6/ip6mr.c:239 [inline]
ip6mr_net_init net/ipv6/ip6mr.c:1318 [inline]
ip6mr_net_init+0x3c4/0x500 net/ipv6/ip6mr.c:1310
ops_init+0xb9/0x650 net/core/net_namespace.c:136
setup_net+0x435/0xb40 net/core/net_namespace.c:340
copy_net_ns+0x2f0/0x670 net/core/net_namespace.c:505
create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
ksys_unshare+0x419/0x970 kernel/fork.c:3322
__do_sys_unshare kernel/fork.c:3393 [inline]
__se_sys_unshare kernel/fork.c:3391 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3391
page_owner free stack trace missing
Memory state around the buggy address:
ffff888045257f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff888045257f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888045258000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888045258080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888045258100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================