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: 10075 Comm: syz-executor.1 Not tainted 4.19.189-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 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:00007fff19c9b540 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: 000000000057c4a8 RSI: 0000000008c9f4bf RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b31e2390c R10: 00007fff19c9b630 R11: 0000000000000293 R12: 000000000003da17 R13: 00000000000003e8 R14: 000000000056bf60 R15: 000000000003d9f9 audit: type=1804 audit(1620370800.626:2): pid=10086 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir404571452/syzkaller.lvWEEO/1/file0" dev="sda1" ino=13946 res=1 Bluetooth: hci3: command 0x040f tx timeout L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. EXT4-fs (loop5): bad geometry: block count 64 exceeds size of device (1 blocks) EXT4-fs (loop5): bad geometry: block count 64 exceeds size of device (1 blocks) IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 Bluetooth: hci3: command 0x0419 tx timeout EXT4-fs (loop1): Couldn't mount because of unsupported optional features (21) EXT4-fs (loop1): couldn't mount as ext3 due to feature incompatibilities EXT4-fs (loop1): Couldn't mount because of unsupported optional features (21) EXT4-fs (loop1): couldn't mount as ext3 due to feature incompatibilities audit: type=1804 audit(1620370804.286:3): pid=10460 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1620370804.376:4): pid=10470 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 audit: type=1804 audit(1620370805.156:5): pid=10470 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1620370805.226:6): pid=10506 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1620370805.246:7): pid=10505 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1620370805.296:8): pid=10460 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir187309518/syzkaller.79bsYY/11/bus" dev="sda1" ino=13956 res=1