INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 PID: 16247 Comm: syz-executor.1 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:728 [inline] register_lock_class+0xe82/0x11c0 kernel/locking/lockdep.c:754 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2834 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2872 l2cap_chan_del+0x690/0xa50 net/bluetooth/l2cap_core.c:637 l2cap_chan_close+0x1b5/0x950 net/bluetooth/l2cap_core.c:757 l2cap_sock_shutdown+0x339/0xe10 net/bluetooth/l2cap_sock.c:1159 l2cap_sock_release+0x77/0x290 net/bluetooth/l2cap_sock.c:1202 __sock_release+0xcd/0x2a0 net/socket.c:579 netlink: 'syz-executor.3': attribute type 5 has an invalid length. sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41940b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffe09b6cdc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: ffffffffffffffbc RSI: 0000000008c9f4bf RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e222138 R10: 00007ffe09b6ceb0 R11: 0000000000000293 R12: 000000000007e863 R13: 00000000000003e8 R14: 000000000056bf60 R15: 000000000007e843 netlink: 'syz-executor.3': attribute type 5 has an invalid length. netlink: 'syz-executor.0': attribute type 5 has an invalid length. netlink: 'syz-executor.4': attribute type 5 has an invalid length. netlink: 'syz-executor.3': attribute type 5 has an invalid length. netlink: 'syz-executor.0': attribute type 5 has an invalid length. netlink: 'syz-executor.3': attribute type 5 has an invalid length. netlink: 'syz-executor.0': attribute type 5 has an invalid length. audit: type=1804 audit(1620427486.020:122): pid=16443 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/191/bus" dev="sda1" ino=14650 res=1 netlink: 'syz-executor.4': attribute type 5 has an invalid length. audit: type=1804 audit(1620427486.190:123): pid=16453 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/191/bus" dev="sda1" ino=14650 res=1 audit: type=1804 audit(1620427486.500:124): pid=16480 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/192/bus" dev="sda1" ino=14645 res=1 netlink: 'syz-executor.4': attribute type 5 has an invalid length. audit: type=1804 audit(1620427486.540:125): pid=16483 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir282020952/syzkaller.V9fJgF/173/bus" dev="sda1" ino=14145 res=1 audit: type=1804 audit(1620427486.750:126): pid=16499 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir282020952/syzkaller.V9fJgF/173/bus" dev="sda1" ino=14145 res=1 audit: type=1804 audit(1620427486.760:127): pid=16496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/192/bus" dev="sda1" ino=14645 res=1 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1804 audit(1620427487.170:128): pid=16527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir282020952/syzkaller.V9fJgF/174/bus" dev="sda1" ino=14658 res=1 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1804 audit(1620427487.200:129): pid=16528 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/193/bus" dev="sda1" ino=14660 res=1 audit: type=1804 audit(1620427487.400:130): pid=16544 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir282020952/syzkaller.V9fJgF/174/bus" dev="sda1" ino=14658 res=1 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1804 audit(1620427487.700:131): pid=16564 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir569808714/syzkaller.X7VCFO/194/bus" dev="sda1" ino=14663 res=1 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. overlayfs: filesystem on './bus' not supported as upperdir netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. device veth6 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): veth6: link is not ready netlink: 76 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 76 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.1"[8103] was attempted by "HH HtH % f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f4 t$\x0c+ T$\x22 H% \x0bH|$Y  SdH% H  dH%( H$ 1H9$\x0at>d% u \x0a1 \x0at\x0cH=\x0a H\x0aڌ\x0a=ߌ\x0a u2HT$ 1HH1\x0a  H$ { \x0a \x0a \x0aȉx\x0auDHo\x0a d% u\x0dU\x0a%M\x0a~\x1bE1Һ H=0\x0a  dH% H9\x0at>d% u \x0a1 \x0at\x0cH=\x0a{~ H܋\x0aҋ\x0au>H$ 1& \x0a H$ HH׹ 1ҿ  =\x0au\x0a   =u\x0au\x0bi\x0a =a\x0au ptrace attach of "/root/syz-executor.1"[8103] was attempted by "HH HtH % f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f4 t$\x0c+ T$\x22 H% \x0bH|$Y  SdH% H  dH%( H$ 1H9$\x0at>d% u \x0a1 \x0at\x0cH=\x0a H\x0aڌ\x0a=ߌ\x0a u2HT$ 1HH1\x0a  H$ { \x0a \x0a \x0aȉx\x0auDHo\x0a d% u\x0dU\x0a%M\x0a~\x1bE1Һ H=0\x0a  dH% H9\x0at>d% u \x0a1 \x0at\x0cH=\x0a{~ H܋\x0aҋ\x0au>H$ 1& \x0a H$ HH׹ 1ҿ  =\x0au\x0a   =u\x0au\x0bi\x0a =a\x0au uinput: write device info first input: syz0 as /devices/virtual/input/input9 uinput: write device info first input: syz0 as /devices/virtual/input/input10 ptrace attach of "/root/syz-executor.1"[8103] was attempted by "HH HtH % f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f4 t$\x0c+ T$\x22 H% \x0bH|$Y  SdH% H  dH%( H$ 1H9$\x0at>d% u \x0a1 \x0at\x0cH=\x0a H\x0aڌ\x0a=ߌ\x0a u2HT$ 1HH1\x0a  H$ { \x0a \x0a \x0aȉx\x0auDHo\x0a d% u\x0dU\x0a%M\x0a~\x1bE1Һ H=0\x0a  dH% H9\x0at>d% u \x0a1 \x0at\x0cH=\x0a{~ H܋\x0aҋ\x0au>H$ 1& \x0a H$ HH׹ 1ҿ  =\x0au\x0a   =u\x0au\x0bi\x0a =a\x0au uinput: write device info first input: syz0 as /devices/virtual/input/input11 ptrace attach of "/root/syz-executor.1"[8103] was attempted by "HH HtH % f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f4 t$\x0c+ T$\x22 H% \x0bH|$Y  SdH% H  dH%( H$ 1H9$\x0at>d% u \x0a1 \x0at\x0cH=\x0a H\x0aڌ\x0a=ߌ\x0a u2HT$ 1HH1\x0a  H$ { \x0a \x0a \x0aȉx\x0auDHo\x0a d% u\x0dU\x0a%M\x0a~\x1bE1Һ H=0\x0a  dH% H9\x0at>d% u \x0a1 \x0at\x0cH=\x0a{~ H܋\x0aҋ\x0au>H$ 1& \x0a H$ HH׹ 1ҿ  =\x0au\x0a   =u\x0au\x0bi\x0a =a\x0au uinput: write device info first input: syz0 as /devices/virtual/input/input12 uinput: write device info first input: syz0 as /devices/virtual/input/input13 ptrace attach of "/root/syz-executor.1"[8103] was attempted by "HH HtH % f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f% f4 t$\x0c+ T$\x22 H% \x0bH|$Y  SdH% H  dH%( H$ 1H9$\x0at>d% u \x0a1 \x0at\x0cH=\x0a H\x0aڌ\x0a=ߌ\x0a u2HT$ 1HH1\x0a  H$ { \x0a \x0a \x0aȉx\x0auDHo\x0a d% u\x0dU\x0a%M\x0a~\x1bE1Һ H=0\x0a  dH% H9\x0at>d% u \x0a1 \x0at\x0cH=\x0a{~ H܋\x0aҋ\x0au>H$ 1& \x0a H$ HH׹ 1ҿ  =\x0au\x0a   =u\x0au\x0bi\x0a =a\x0au uinput: write device info first uinput: write device info first uinput: write device info first input: syz0 as /devices/virtual/input/input14 input: syz0 as /devices/virtual/input/input15 input: syz0 as /devices/virtual/input/input16 uinput: write device info first input: syz0 as /devices/virtual/input/input17 uinput: write device info first input: syz0 as /devices/virtual/input/input18