INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 12438 Comm: syz-executor.1 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 register_lock_class+0x32b/0x1320 kernel/locking/lockdep.c:768 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2831 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2869 l2cap_chan_del+0x56d/0x950 net/bluetooth/l2cap_core.c:637 l2cap_chan_close+0x103/0x870 net/bluetooth/l2cap_core.c:757 l2cap_sock_shutdown+0x2e7/0xc20 net/bluetooth/l2cap_sock.c:1160 l2cap_sock_release+0x77/0x280 net/bluetooth/l2cap_sock.c:1203 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x41940b RSP: 002b:00007ffff389ab30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: ffffffffffffffbc RSI: 00000000089075c3 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2fc21f10 R10: 00007ffff389ac20 R11: 0000000000000293 R12: 000000000003ffaa R13: 00000000000003e8 R14: 000000000056bf60 R15: 000000000003ffa9 kauditd_printk_skb: 4 callbacks suppressed audit: type=1804 audit(1620308558.170:46): pid=12484 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir667083457/syzkaller.Wgg0qa/99/bus" dev="sda1" ino=14222 res=1 delete_channel: no stack delete_channel: no stack audit: type=1804 audit(1620308558.200:47): pid=12484 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir667083457/syzkaller.Wgg0qa/99/bus" dev="sda1" ino=14222 res=1 audit: type=1804 audit(1620308558.420:48): pid=12547 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir447047888/syzkaller.iRFa7Y/127/bus" dev="sda1" ino=14230 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1800 audit(1620308558.420:49): pid=12547 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=14230 res=0 encrypted_key: insufficient parameters specified audit: type=1804 audit(1620308558.450:50): pid=12547 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir447047888/syzkaller.iRFa7Y/127/bus" dev="sda1" ino=14230 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1800 audit(1620308558.450:51): pid=12547 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=14230 res=0 PF_BRIDGE: br_mdb_parse() with invalid entry PF_BRIDGE: br_mdb_parse() with invalid entry usb usb20-port1: Cannot enable. Maybe the USB cable is bad? mkiss: ax0: crc mode is auto. binder: 12703:12706 ioctl f505 0 returned -22 mkiss: ax0: crc mode is auto. device lo entered promiscuous mode binder: 12703:12706 ioctl f505 0 returned -22 Y4`Ҙ: renamed from lo usb usb20-port1: Cannot enable. Maybe the USB cable is bad? usb usb20-port1: attempt power cycle IPVS: ftp: loaded support on port[0] = 21 print_req_error: I/O error, dev loop4, sector 0 EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue IPVS: ftp: loaded support on port[0] = 21 usb usb20-port1: Cannot enable. Maybe the USB cable is bad? EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue usb usb20-port1: Cannot enable. Maybe the USB cable is bad? usb usb20-port1: unable to enumerate USB device IPVS: ftp: loaded support on port[0] = 21 netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 108 bytes leftover after parsing attributes in process `syz-executor.1'. MTD: Attempt to mount non-MTD device "/dev/loop3" romfs: Mounting image 'rom 5f663c08' through the block layer