bisecting fixing commit since 13af6c74b14a883366e7702c40c52ff548096e7f
building syzkaller on 02034dac31a9c4dfecfa163f445ef1921c442268
testing commit 13af6c74b14a883366e7702c40c52ff548096e7f with gcc (GCC) 8.4.1 20210217
kernel signature: 5e15611584415abb950837a7374ba37330ffe877cae8fb737d47b724f1af5e54
all runs: crashed: KASAN: use-after-free Read in hci_send_acl
testing current HEAD 2965db2e004cf9c92b87c1f559e9812c0ae878c1
testing commit 2965db2e004cf9c92b87c1f559e9812c0ae878c1 with gcc (GCC) 8.4.1 20210217
kernel signature: 1c194928ca99e6c4f3a9290634afc81ea0b377f88fed2006635ea78fa3445dc7
all runs: crashed: KASAN: use-after-free Read in hci_send_acl
revisions tested: 2, total time: 22m40.243107443s (build: 15m54.135415719s, test: 6m17.139538598s)
the crash still happens on HEAD
commit msg: Linux 4.19.188
crash: KASAN: use-after-free Read in hci_send_acl
Bluetooth: Wrong link type (-22)
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
==================================================================
BUG: KASAN: use-after-free in hci_send_acl+0x6bd/0x7c0 net/bluetooth/hci_core.c:3654
Read of size 8 at addr ffff8881db1ae318 by task kworker/u5:2/7168
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0

CPU: 1 PID: 7168 Comm: kworker/u5:2 Not tainted 4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_rx_work
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x17c/0x226 lib/dump_stack.c:118
 print_address_description.cold.6+0x9/0x211 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:396
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 hci_send_acl+0x6bd/0x7c0 net/bluetooth/hci_core.c:3654
 l2cap_send_cmd+0x631/0x830 net/bluetooth/l2cap_core.c:877
 l2cap_information_req net/bluetooth/l2cap_core.c:4455 [inline]
 l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:5447 [inline]
 l2cap_sig_channel net/bluetooth/l2cap_core.c:5798 [inline]
 l2cap_recv_frame+0x21ea/0xa430 net/bluetooth/l2cap_core.c:7023
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 l2cap_recv_acldata+0x756/0x8a0 net/bluetooth/l2cap_core.c:7594
 hci_acldata_packet net/bluetooth/hci_core.c:4180 [inline]
 hci_rx_work+0x5d6/0x8f0 net/bluetooth/hci_core.c:4366
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2152
 worker_thread+0x85/0xb60 kernel/workqueue.c:2295
 kthread+0x347/0x410 kernel/kthread.c:259
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Allocated by task 1231:
 save_stack mm/kasan/kasan.c:448 [inline]
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc.part.1+0x62/0xf0 mm/kasan/kasan.c:553
 kasan_kmalloc+0xaf/0xc0 mm/kasan/kasan.c:538
 kmem_cache_alloc_trace+0x152/0x3a0 mm/slab.c:3625
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 hci_chan_create+0x7b/0x2e0 net/bluetooth/hci_conn.c:1668
 l2cap_conn_add.part.17+0x15/0xb80 net/bluetooth/l2cap_core.c:7062
 l2cap_conn_add net/bluetooth/l2cap_core.c:97 [inline]
 l2cap_connect_cfm+0x339/0xd50 net/bluetooth/l2cap_core.c:7379
 hci_connect_cfm include/net/bluetooth/hci_core.h:1246 [inline]
 hci_remote_features_evt.isra.63+0x467/0xa80 net/bluetooth/hci_event.c:3009
 hci_event_packet+0x10ac/0x7230 net/bluetooth/hci_event.c:5795
 hci_rx_work+0x363/0x8f0 net/bluetooth/hci_core.c:4361
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2152
 worker_thread+0x85/0xb60 kernel/workqueue.c:2295
 kthread+0x347/0x410 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Freed by task 7168:
 save_stack mm/kasan/kasan.c:448 [inline]
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x13c/0x220 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 hci_chan_del+0x11b/0x170 net/bluetooth/hci_conn.c:1698
batman_adv: batadv0: Interface activated: batadv_slave_0
 amp_destroy_logical_link+0x9/0x10 net/bluetooth/amp.c:598
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 hci_disconn_loglink_complete_evt net/bluetooth/hci_event.c:4759 [inline]
 hci_event_packet+0x2e45/0x7230 net/bluetooth/hci_event.c:5922
 hci_rx_work+0x363/0x8f0 net/bluetooth/hci_core.c:4361
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2152
 worker_thread+0x85/0xb60 kernel/workqueue.c:2295
 kthread+0x347/0x410 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8881db1ae300
 which belongs to the cache kmalloc-128 of size 128
The buggy address is located 24 bytes inside of
 128-byte region [ffff8881db1ae300, ffff8881db1ae380)
The buggy address belongs to the page:
page:ffffea00076c6b80 count:1 mapcount:0 mapping:ffff8881f6400640 index:0x0
flags: 0x17ffe0000000100(slab)
raw: 017ffe0000000100 ffffea00076c2688 ffffea00076b44c8 ffff8881f6400640
raw: 0000000000000000 ffff8881db1ae000 0000000100000015 0000000000000000
page dumped because: kasan: bad access detected

batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Memory state around the buggy address:
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 ffff8881db1ae200: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff8881db1ae280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8881db1ae300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff8881db1ae380: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff8881db1ae400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================
Bluetooth: Wrong link type (-22)
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Bluetooth: Wrong link type (-22)
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Bluetooth: Wrong link type (-22)
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Bluetooth: Wrong link type (-22)
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Bluetooth: Wrong link type (-22)
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Bluetooth: Wrong link type (-22)
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Bluetooth: Wrong link type (-22)
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci0: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci1: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci0: command 0x041b tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci2: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci5: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci3: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci4: command 0x0409 tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci1: command 0x041b tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci0: command 0x040f tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci2: command 0x041b tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci4: command 0x041b tx timeout
Bluetooth: Wrong link type (-22)
Bluetooth: Wrong link type (-22)
Bluetooth: hci3: command 0x041b tx timeout
kasan: CONFIG_KASAN_INLINE enabled
Bluetooth: Wrong link type (-22)
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7292 Comm: kworker/u5:4 Tainted: G    B             4.19.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_rx_work
RIP: 0010:hci_queue_acl net/bluetooth/hci_core.c:3602 [inline]
RIP: 0010:hci_send_acl+0x125/0x7c0 net/bluetooth/hci_core.c:3658
Code: b6 04 06 84 c0 74 06 0f 8e 69 04 00 00 48 8d bb a3 00 00 00 41 c6 46 28 02 48 b8 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 <0f> b6 04 06 48 89 fe 83 e6 07 40 38 f0 7f 08 84 c0 0f 85 15 04 00
RSP: 0018:ffff8881cda1f668 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8881db1ae300
RDX: 0000000000000002 RSI: 0000000000000014 RDI: 00000000000000a3
RBP: ffff8881cda1f6e0 R08: ffffed103b702d53 R09: ffffffff8ad4d8c0
R10: ffffed103b702d52 R11: dffffc0000000000 R12: 0000000000000002
R13: 000000000000000c R14: ffff8881db30fdc0 R15: ffff8881db30fdc0
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000055c061 CR3: 000000000846d004 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 l2cap_send_cmd+0x631/0x830 net/bluetooth/l2cap_core.c:877
 l2cap_information_req net/bluetooth/l2cap_core.c:4455 [inline]
 l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:5447 [inline]
 l2cap_sig_channel net/bluetooth/l2cap_core.c:5798 [inline]
 l2cap_recv_frame+0x21ea/0xa430 net/bluetooth/l2cap_core.c:7023
 l2cap_recv_acldata+0x756/0x8a0 net/bluetooth/l2cap_core.c:7594
 hci_acldata_packet net/bluetooth/hci_core.c:4180 [inline]
 hci_rx_work+0x5d6/0x8f0 net/bluetooth/hci_core.c:4366
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2152
Bluetooth: Wrong link type (-22)
 worker_thread+0x85/0xb60 kernel/workqueue.c:2295
 kthread+0x347/0x410 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace ecbe777b02484a6d ]---
Bluetooth: Wrong link type (-22)
RIP: 0010:hci_queue_acl net/bluetooth/hci_core.c:3602 [inline]
RIP: 0010:hci_send_acl+0x125/0x7c0 net/bluetooth/hci_core.c:3658
Bluetooth: Wrong link type (-22)
Code: b6 04 06 84 c0 74 06 0f 8e 69 04 00 00 48 8d bb a3 00 00 00 41 c6 46 28 02 48 b8 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 <0f> b6 04 06 48 89 fe 83 e6 07 40 38 f0 7f 08 84 c0 0f 85 15 04 00
RSP: 0018:ffff8881cda1f668 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8881db1ae300
RDX: 0000000000000002 RSI: 0000000000000014 RDI: 00000000000000a3
RBP: ffff8881cda1f6e0 R08: ffffed103b702d53 R09: ffffffff8ad4d8c0
R10: ffffed103b702d52 R11: dffffc0000000000 R12: 0000000000000002
R13: 000000000000000c R14: ffff8881db30fdc0 R15: ffff8881db30fdc0
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000055c061 CR3: 000000000846d004 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Bluetooth: Wrong link type (-22)